CA2409908C

CA2409908C - Teeth cleaning device

Info

Publication number: CA2409908C
Application number: CA2409908A
Authority: CA
Inventors: Alexander Hilscher; Hansjorg Reick; Martin Stratmann; Peter Trawinski; Wolfgang Vorbeck; Armin Schwarz-Hartmann
Original assignee: Braun GmbH
Current assignee: Braun GmbH
Priority date: 2001-03-14
Filing date: 2002-02-19
Publication date: 2011-05-10
Anticipated expiration: 2022-02-19
Also published as: DE50202625D1; WO2002071972A1; PL199219B1; PL357380A1; KR100935386B1; HUP0301569A2; KR20030081004A; HU226504B1; DK1367959T5; CN1256073C; EP1367959B1; JP2004518511A; ES2238566T3; CN1460011A; EP1367959A1; PT1367959E; AU2002250971B2; DK1367959T3; RU2301047C2; JP4105952B2

Abstract

The invention relates to a handle (10) of an electric teeth cleaning device comprising a coupling element (30) for mechanically coupling a brush (20), a drive (22) for the brush (20) and a control function (18) for the drive (22), said control function (18) comprising an operation locking function (36), which can be activated and deactivated by a release function (38), in particular of the brush (20). The handle (10) has a read function (44) and a coil (46) as a coupling function for the contactless transmission and reading of single or multiple data of the release function (38). The operation locking function (36) is activated or deactivated in accordance with an output signal of the read function (44).

Description

Teeth Cleaning Device This invention relates to an electrical dental cleaning device. The invention relates in particular to the handle section of such a dental cleaning device which has a coupling device for the coupling of various or different brush sections, a drive mechanism for driv-ing the respectively coupled brush section, and a control device. The invention further relates to the brush sections, particularly brush attachments, for such a handle section.

Devices for brushing or cleaning teeth such as electrical toothbrushes or electrical oral irrigators customarily have a grip or a handle section or handhold to which a variety of cleaning tools such as brush attachments, jet nozzles, interproximal brushes or brush sections are attachable, thus enabling several users to use the dental cleaning device with their own, in particular person-related cleaning tools. Such electrical toothbrushes are known, for example, from DE 19627752 Al or EP 0624079 61.

From DE 299 15 858 Ul a dental cleaning device is known in which each of the different toothbrushes can be inserted only into its assigned receptacle in a console. This then starts the program provided for this particular toothbrush. Particularly children find it however difficult to locate the individual opening for insertion of their personal toothbrush and mating engagement of the plug. Furthermore, this console involves high complexity of manufacture, considering that it requires the provision of a plurality of different receptacles and each of the toothbrushes has a different plug assigned to its own receptacle.

In a further device disclosed in U.S. Pat. No. 5,184,959, each hand toothbrush is assigned its own accommodating slot in a housing, so that each toothbrush can be assigned an individual brushing time signal via the housing. This arrangement is very elaborate from the manufacturing point of view without providing for the detection and storage of user-specific data of the tooth cleaning operation.

Such dental cleaning devices are capable of improvement on many counts. One problem encountered is in particular that in storage-battery-operated toothbrushes the storage battery may become depleted prematurely. This may happen, for example, in cases where the toothbrush is not properly stowed away in a travel case or the like, so that the drive mechanism turns on accidentally. Furthermore, it may happen that the handle section is not always coupled with the correct brush attachments, so that as a re-sult of the lack of compatibility the handle section, for example, the coupling portions, may be damaged particularly in the area of the drive train, or a proper cleaning function is not assured, likewise for lack of compatibility.

Furthermore, dental cleaning devices, namely electrically operated toothbrushes comprising a handle section and an attachable brush section in which the handle section has in a recess of its housing a mechanically actuatable switch which, as the case may be, is covered by a water-tight protective foil such that a switching contact of said switch is actuated by means of an extension of the plastic housing of the brush section when the brush section is attached to the handle section, were also launched on the market in the USA in approximately 1992 from the company Bausch & Lomb, model Interplak (regis-tered trade mark), e.g., the PB-6. Once the switching contact has been actuated by an attached brush section, the drive mechanism of the toothbrush can be switched on by means of an ON switch on the handhold. These features are provided presumably for safety reasons because, unlike many other handle sections on electrical toothbrushes, the drive shaft on the previously mentioned toothbrush oscillates back and forth in the direction of the longitudinal axis. The stroke of the shaft is so considerable that switching on the handle section without an attached brush section could lead to risk of injury be-cause the drive shaft makes a stroking movement similar to a sewing needle on a sewing machine. The independent claims relating to the handle section and brush section are delimiting from this prior art.

From DE 28 26 008 C2 there is known a switch for actuating an electrical toothbrush with a permanent magnet arranged on an annular actuating member, said annular actuating member being axially displaceably arranged on the housing.
The per-manent magnet of the annular actuating member activates or deactivates a magnetically sensitive switch, e.g. a reed relay, which is arranged in the interior of the housing of the toothbrush. The annular actuating member can be pulled off the housing of the toothbrush, enabling the housing and the actuating member to be cleaned with ease after its removal. Removing the actuating member has the simultaneous effect of making it impossible for the electrical toothbrush to be switched on, thus preventing a toothbrush with the actuating member detached from switching on by itself when it is being trans-ported in a case and the batteries or storage batteries becoming depleted accidentally.

The above-mentioned features for providing a certain travel security function have not proven a success in practice however because in the case of the Interplak solution considerable force is required to attach and detach the brush section to and from the handle section in order to actuate the switching contact provided in the handle section. A
further problem is that the switching contacts become dirty and that a great effort is needed to produce a dirt- or water-proof covering over the switching contact.
The de-tachable switching ring in patent specification DE 28 26 008 C2 is intended likewise to perform a security function when traveling, but here there is a problem in that the de-tached switching ring can get lost, particularly on journeys, and that it is then impossible to set the handhold in operation even with full batteries or storage batteries. Further-more, these known solutions for providing security when on journeys display little flexibility as regards other comfort functions such as the automatic adaptation of a handle section's operating parameters to a specific brush section or the user-specific collection and stor-age of cleaning data or the like.

From EP 0 848 921 Al there is also known a brush for DIY use and a manufac-turing method therefor in which a tag as data memory is nondetachably fastened in the brush itself, namely between a bristle carrier and a cup-shaped holding element. It is then intended to use the tag to store data concerning safety standards, maximum speed, country of origin, manufacturer's brand, article number, connection diameter and, for example, a barcode that can be read by an electronic reading system at the cash-desk of a DIY store, for example. The tag can be made in particular of aluminum or a heat-resistant plastic material because the brushes are exposed to very high temperatures during use. This tag is evidently an aluminum or plastic disk that has a surface loaded with optically readable information and is nondetachably connected with the brush body.
The disadvantage of such codes, however, is that they have a rather small storage capacity and cannot be re-programmed. Their readability also assumes that the code is freely accessible in optical terms, which is not the case in all applications.

Further, there is known a multiplicity of electronic article security systems in which security tags comprising, for example electrical resonant circuits or soft magnetic sensor strips, are affixed to the articles and excited by electromagnetic fields in gates installed in shop exit areas. If the articles have not been paid for, i.e., the security tags are still active, a signal is detected and an alarm emitted. Pertinent details can be found, for example, in the article "Der grol3e Lauschangriff auf Ladendiebe" by Gieselher Herzer, Physikalische Blatter 57 (2001), No. 5, pages 43 to 48.

A sub-case of these systems are the systems referred to as RFID (radio frequency identification) systems, which find application on noncontacting chip cards and, more re-cently, on motor vehicle keys or refuse bins in order, in the latter case, to enable invoices to be issued according to the actual emptying of the bins.

Such systems are known, for example, from U.S. Pat. No. 5,812,065, WO
00/42584, U.S. Pat. No. 6,177,870, WO 00/39768, DE 199 53 651 Al or WO
98/24527, the system disclosed in the last mentioned specification being used in an electronic toy to exchange data between a figure, which is equipped with a transponder, and a base unit, which is equipped with a reader.

It is an object of the present invention to provide an improved handle section of an electrical dental cleaning device and improved brush sections therefor, which avoid the disadvantages of the prior art, develop it further and afford additional advantages. In par-ticular the invention aims to provide a comfortable safety device with the possibility of activating further specific functions and/or preventing improper use of the dental cleaning device.

In a handle section of an electrical dental cleaning device comprising a coupling device for the mechanical coupling of a brush section, a drive mechanism for the brush section and a control function for the drive mechanism, said control function including an operation inhibiting function that can be activated and deactivated by an enabling function in particular of the brush section, this object is accomplished essentially in that the handle section includes a reading function and a coil as coupling function for the noncontacting transmission and reading of one or more items of information or data of the enabling function, the inhibiting function being activated or deactivated in response to an output signal of the reading function. The advantage of these features over the prior art is that they enable comfortable handling when coupling and decoupling the handle section and the brush section, eliminate the need for mechanical actuation by the brush section of components provided in the handle section for activating/deactivating the inhibiting func-tion, and lay the basis for implementing further user-friendly functions.
Furthermore, it is unnecessary to remove switch mechanisms or other components from the handle section in order to achieve a security function during travel. It is noted below that the terms handle section of an electrical dental cleaning device, brush section or the like may not refer only to an electrically operated toothbrush but also to other electrically operated dental cleaning devices such as oral irrigators, interproximal cleaners or the like, in which a handle section is adapted to be coupled to a cleaning section which is used either by a specific user or is a disposable item. To this extent the terms brush section, brush attachment, plug-in brush, spare brush are equatable or interchangeable with the terms cleaning section, jet nozzle, interproximal cleaner.

According to one embodiment of the invention it is an advantage for the reading function and/or coupling function to be activatable via a switch-on function of the handle section, in particular a switch-on function for the drive mechanism.

It is also expedient for the reading function or coupling function to transfer and read data, provided the brush section is mechanically coupled to the handle section.

In this context, it is an advantage that provision is made for the coupling function to operate inductively.

The coil is preferably arranged in a portion of the handle section adjacent to the coupling device or also in the area of the coupling device itself.

It is also expedient for the coil to have one or several turns that encompass or en-close a longitudinal axis of the handle section, preferably an axis of rotation of a drive shaft driven by the drive mechanism in the handle section.

Provision is also made for the turn area of the coil to define with a rotary or longi-tudinal axis of the handle section an included angle of between about 1400 and about 400, preferably 90 10 .

In an exceptional case it may also be expedient for the enabling function to be associated with the handle section itself, in particular is fastened in or on a housing of the handle section.

Furthermore it is possible, by means of the drive mechanism, for a drive shaft to be set in at least one alternating rotary motion about an axis of rotation or one rotary motion about an axis of rotation and/or in a swivel motion about a swivel axis positioned essentially perpendicular to the axis of rotation.

Advantageously, the reading function, the control function and the operation inhib-iting function are part of an ASIC. In some cases of application it may also be expedient however for these functions to be implemented as discrete functions or, as far as possible, for them to be implemented by means of suitable software in a microcontroller or the like.

To accomplish the object identified in the foregoing, the brush section with a driv-able brush head as well as a mating coupling device for coupling mechanically to a handle section comprising a coupling device, a drive mechanism and an operation inhib-iting function of an electrical toothbrush, with an enabling function associated with the brush section for activating or deactivating the inhibiting function is characterized in that the enabling function (38) of the brush section (20) comprises a noncontacting data carrier and a coil (48) as a coupling function for the noncontacting transmission of one or more items of data.

The data carrier or the coupling function of the brush section is activatable pref-erably via a switch-on function of the handle section or a switch-on function associated therewith, preferably for switching on the drive mechanism.

The data carrier or the coupling function transmits data provided the brush section is mechanically coupled to the handle section.

It is an advantage for the coupling function to operate inductively.

The coil is preferably arranged in a portion of the mating coupling device or in a portion of the brush section adjacent thereto.

The coil has one or several turns which encompass or enclose a longitudinal axis of the brush section or an axis of rotation of a plug-on shaft in the brush section.

The turn area of the coil defines with a rotary or longitudinal axis of the brush sec-tion an included angle of between about 140 and about 40 , preferably 90 10 .

It is an advantage in this connection for a profiled sleeve to be provided on the brush section, which sleeve is received in a tubular shank of the brush section, and for the read-out/transmission function or the parts or components performing this function to be arranged on the profiled sleeve or connected therewith. Furthermore, the shank of the brush section can also receive a plug-on shaft.

The noncontacting data carrier is constructed as a transponder, preferably a pas-sive transponder without its own energy supply.

Provision is advantageously made for the transponder to have a data memory for digital data, preferably with a storage capacity of between 10 bit and. 104 bit, approxi-mately.

The present invention is also directed to an electrical dental cleaning device with a handle section in combination with a brush section of the type described in the foregoing.
In this arrangement the data transmitted between brush section and handle section may include not only data for activating the enabling function but also data specifically for the individual brush section, for operating parameters for the operation of the brush section or handle section or specifically for the individual user.

Advantageously, the digital data is subjected to a coding/detecting function.
Provision is furthermore made for one or more data items to be transmitted from the brush section to the handle section and/or vice versa.

According to another embodiment of the invention, energy is suitably transmitted from the handle section to the brush section to activate the passive transponder.

Provision is preferably made for the handle section and the brush section to be in-ductively coupled by means of the coils for the exchange of data or for the transmission of data and/or transmission of energy.

The advantages of the system of the invention and advantageous embodiments thereof are summarized in the following:

On a handle section of an electrical dental cleaning device provision is advanta-geously made for a control device having an operation inhibiting device, which can be deactivated via noncontacting data exchange or data transmission by an enabling func-tion on the cleaning tool. The cleaning tool of the type initially referred to possesses an enabling function to deactivate the inhibiting device of the handle section via noncon-tacting data exchange or data transmission between the brush section and the handle section. These features thus provide protection against unintentional switching on of the dental cleaning device. The drive mechanism of the handle section can only be switched on when a compatible cleaning tool providing an enabling function is attached to the handle section and the handle section's inhibiting function is deactivated as the result.
Unintentional switching on in a travel case or the like can easily be prevented by removing the cleaning tool from the handle section. Unintentional premature depletion of the drive's storage battery is thus impossible. Additional design or mechanical approaches for im-plementing a switch-on lock, for example on the switch of the handle section, are unnec-essary. Provision can be advantageously made for the inhibiting device to be deactivated solely by the enabling device of the cleaning tool, particularly only when the cleaning tool is properly coupled to the handle section. This can be achieved in that the enabling de-vice on the cleaning tool and a detecting device for the enabling device on the handle section are constructed and coordinated such that the enabling device is effective pref-erably in a predetermined orientation and/or position relative to the detecting device and hence to the handle section. To prevent the handle section, particularly the drive train or its coupling, from being damaged by plugging on unsuitable brush attachments, the ena-bling device can have an additional code or transmit coded data by means of which the cleaning tool is identifiable. The handle section thus has a coding/detecting device or decoding function which detects or decodes the code of the respectively attached clean-ing tool. The inhibiting device is only deactivated when the correct code is present and a corresponding signal is produced. The handle section thus detects the individual cleaning tool attached at that moment and controls the enabling of the drive mechanism according to the detected cleaning tool. The code can be queried generally at predetermined inter-vals. In a particular embodiment of the invention the coding/detecting device is only acti-vated when an ON switch of the handle section, for example of the electric drive mecha-nism, is actuated. This has the advantage that the current consumption of the required electronic components is minimized. To switch on the dental cleaning device the user actuates the ON/OFF switch of the control device or electric motor as usual.
However, the electric motor or drive mechanism is not directly set in motion by actuating the switch but first the coding and/or detecting device is activated, which then sets the motor of the handle section in operation provided a compatible and suitably coded brush attachment is coupled to the handle section. Ultimately, therefore, activating the coding and/or detect-ing device by means of the ON/OFF switch sets the drive mechanism of the handle sec-tion only indirectly in operation, namely when the enabling element of the brush section deactivates the inhibiting device of the handle section. If no brush section is attached or coupled to the handle section or if there is a non-compatible brush section on the handle section, the coding and/or detecting device will not detect a suitable code when the ON/OFF switch of the handle section is actuated, or the enabling element missing from the brush attachment will be unable to deactivate the inhibiting device of the handle sec-tion so that in this case the handle section of the electric motor driven toothbrush cannot be put in operation. One of the advantages afforded by providing for such activation of the coding and/or detecting device by means of the ON/OFF switch is that the coding and/or detecting device needs to be supplied with electrical current preferably only when the switch of the handle section is switched on or off, being otherwise inactive or passive.
It is also possible of course to activate the coding and/or detecting device at regular or irregular intervals during operation of the toothbrush in order to check the presence of a compatible, that is, correctly coded brush attachment, also when the switch is not being switched on or off. This is a preferable possibility to correct a mis-detection of a brush attachment. If, for whatever reasons, the handle section was switched on by the device without a brush section attached (with the switch actuated), e.g., due to a temporary electronic malfunction or strong fields of interference, the handle section can be switched off again with the next activation of the device. If, when the dental cleaning operation is over, the ON/OFF switch is actuated again in order to switch off the drive mechanism of the handle section, the drive mechanism will be directly stopped by this actuation and, if applicable, the inhibiting device deactivated so that when the ON/OFF switch of the handle section is switched on again subsequently the described process can be repeated.
Furthermore, the coding and/or detecting device is constructed to operate in noncon-tacting fashion. This has the advantage of avoiding interference due to soiled contact faces or wear as a result of frequent attaching and detaching or elaborate sealing measures. It is also possible for the handle section to comprise a signal receiver receiv-ing from the cleaning tool a coded signal or a signal deactivating the inhibiting device.
The handle section may also be equipped with a signal transmitter sending an interroga-tion or activation signal to the enabling function of the cleaning tool, whereupon the latter is activated energetically and sends the coded signal or enabling signal back.
The emis-sion of the coded signal or enabling signal by the enabling function of the cleaning tool may take place by a corresponding active or passive signal transmitter or a suitable acting member.

The coding or configuration of the enabling element of the cleaning tool(s) may be implemented by incorporating it in the cleaning tool itself or in a portion or part of the cleaning tool as, for example, a colored ring or profiled ring of the type described, for example, in WO 99/20202, or in a corresponding device.

A further approach includes the provision of an electrically operating detecting de-vice for detecting an electrical coding, meaning the presence of the enabling element of the respectively coupled cleaning tool. The cleaning tool sends a not coded or a coded electrical signal to the handle section, meaning to a signal receiver provided thereon, thus enabling the respective cleaning tool to be identified. It is also possible for the handle section to send initially an interrogation signal to the cleaning tool which is coded or modi-fied by the cleaning tool and sent back subsequently. Provision can also be made for a transmit or radio device for detecting the respectively attached cleaning tool by means of electromagnetic waves. In particular a transponder may be associated with the cleaning tool. The handle section initially emits electromagnetic waves for energy supply to the generally passive transponder. The transponder stores the energy and sends an individ-ual ID back to a detector in the handle section which detects the ID and correspondingly identifies the cleaning tool and deactivates the inhibiting function.

The cleaning tool is thus characterized by the provision of a magnetic, electrical and/or electromagnetically operating coding device or an enabling element of this type.
Another characteristic feature may include the provision of a signal receiver for receiving a signal from the dental cleaning device and of a signal transmitter for transmitting a coded signal to the dental cleaning device, there being inserted preferably a coding de-vice between the signal receiver and the signal transmitter for coding the received signal.
The coding device or the enabling element is preferably constructed as a separate com-ponent suitable for detachment from the remaining part of the cleaning tool or for re-placement. The advantage thereby achieved is that the cleaning tool has to be manu-factured in only one embodiment. By mounting the separate coding device or enabling function the cleaning tools are coded on an individual basis and are assignable to a par-ticular type of handle section. However, the coding device constructed as enabling ele-ment may also be integrated in the cleaning tool when it is desirable to provide solely a travel security function or detect incompatible cleaning tools. The coding device or ena-bling element is arranged preferably in the area of the connection or coupling between the cleaning tool and the handle section. This facilitates the reading of the coding, meaning the detection of the enabling element by the recognition device on the handle section. In particular, the enabling element or coding device may be integrated in a ring arranged at the end of the cleaning tool close to the handle section, being in particular snap-fitted thereto by positive engagement therewith. The various configurations of the recognition devices may be provided singularly or in combination. The same applies to the various configurations of the coding device or enabling element on the cleaning tool.

Apart from protecting the handle section against inadvertent turning on and im-proper use of incompatible cleaning tools, a coding of the cleaning tools and its detection by the handle section may be utilized to advantage for performing further functions. In this context, provision can be made for the handle section to control one or preferably several functions of the dental cleaning device in dependence upon the respective clean-ing tool detected. Assuming that each user of the handle section has his or her own cleaning tool, particularly the control device of the handle section may establish automati-cally, by referring to the detected coding on the cleaning tool, which user is currently using the dental cleaning device. There is no need on the user's part to inform the dental cleaning device of its current user as by pressing a button and the like. The operating parameters of the device can be adapted to the individual user automatically.
This results in a maximum of user friendliness. In particular the control device is capable of adapting operating parameters such as cleaning frequency, cleaning speed and cleaning period or threshold value or recommended range of application pressure automatically to the indi-vidual user identified. A variety of user profiles can be set and stored, one of which is used by the control device after, at the beginning of cleaning, the coding of the cleaning tool being currently used has been detected and the respective user has been estab-lished. To this effect the coding and/or detecting device has issued a corresponding signal to the control device. Where electrical toothbrushes are used, it is possible, for example, for the motor speed to be reduced from the usual speed for adults when a child is the user, so that a gentler cleaning operation is performed for the child.
In addition, the control device may vary, responsive to a signal from the coding and/or detecting device, the duration of a timer according to the user identified, setting the timer to two minutes for children and to three minutes for adults, for example. The type of timer signal could also be modified, as by selecting a tune for children and a buzzer tone for adults.
A further solution offering itself is to store data for new timer tunes in the brush attachment and transmit them from the brush attachment to the handle section where they may also be stored, as the case may be.

It is also possible to store, process and indicate as on a display user-specific data such as cleaning frequency, cleaning speed, cleaning period, time interval between cleaning operations or application pressure automatically in response to a corresponding signal from the detecting device. This too results in enhanced user comfort.

The handle section hence detects, i.e., identifies, the individual user indirectly by referring to the cleaning tool used or its coding. Provision may also be made for a specific function control in dependence upon the particular type of cleaning tool used. For instance, operating parameters of the handle section may be varied automatically when a brush attachment with specific properties such as high or low hardness is used. Equally, another operating program may be run when a cleaning tool of different type as, for example, an interproximal cleaning tool, a tool for gum massage or a tongue cleaner is attached to the handle section. Rotational frequency, recommended cleaning period, driving motion, cleaning frequency, cleaning speed, application pressure threshold value, etc. can be suitably adapted in response to the individual and/or person-related exchangeable cleaning tool.

Still further, by identifying an individual cleaning or brushing tool or refill unmis-takably it is possible to establish its state of wear precisely, for example, by evaluating the history of this particular cleaning tool, in particular the time of past uses.
Where cleaning tools with chemical additives are used, their,,use by" date can be identified by the date of manufacture contained in the coding. Predetermined cleaning or maintenance intervals can be indicated.

According to a preferred embodiment an RFID (radio frequency identification) reading device is provided in the handle section of the toothbrush in order to implement the enabling function, a reading device being understood to be the detecting device for the data of a transponder provided in the brush section and transmitted in noncontacting manner. The RFID reading device and the transponder or some other noncontacting data carrier each have a coupling element, which can be a coil or also a microwave antenna for example, whereby data, clock pulses or energy are exchanged via these coupling elements between the reading device and the noncontacting data carrier. It is thus possible, by means of the reading device, which is also referred to as a transceiver (transmitter/receiver) to receive data or information from the transponder.
Conversely, it is also possible to use the reading device to write date into the transponder.
Thus, for example, the possibility exists to write into the transponder data concerning the user of the individual brush section or also data concerning the period of cleaning or use for an individual brush section so that when a certain maximal cleaning period has elapsed the user can be reminded, for example, to replace the brush section with a new one. Gener-ally, energy is transmitted from the reading device to the transponder when the trans-ponder is of the passive type, meaning a transponder without an energy supply of its own.

The energy transmitted from the reading device to the transponder is then used for acti-vation of the transponder. In the event of an active transponder being used, meaning a transponder with its own energy supply, for example a button cell as a battery or the like, it will be understood, of course, that the transmission of energy to activate the trans-ponder is not necessary. An inductive or magnetic coupling is preferably provided in the given case for electrical dental cleaning devices as an element for the noncontacting coupling of the reading device and transponder. In the relevant literature such couplings are referred to as inductive radio systems or inductively coupled short range devices. The operating frequency in the given case of application preferably lies at 13.56 MHz. The transponder itself can be configured as a 1-bit or multi-bit transponder. The transmission of information or data between the transponder and the reading device is preferably per-formed by means of a load modulation in the transponder, for which purpose a load re-sistor is switched on or off in the transponder at a cycle frequency or certain pulse train, thus producing a reaction or feedback in the reading device via the inductive coupling, enabling the data to be transmitted from the transponder to the reading device and vice versa.

In summary, the gist, meaning the idea underlying the present invention, shall be presented as follows, also independently of the wording in the claims: The enabling ele-ment or enabling function on the cleaning tool for deactivating the operation inhibiting device or function can be configured in the simplest embodiment of the coding and/or detecting device or function in such manner that only the presence or absence (1-bit information) of a replacement brush on the handle section is detectable. To this effect, for example, an acting member may be arranged in the brush which corresponds with a reacting member in the handle section, in such manner that with the cleaning tool and the handle section in coupled condition the reacting member receives from the acting member a preferably digital signal and deactivates, for example, the inhibiting device pro-vided, so that the handle section and hence also the cleaning tool can be set in operation by means of the drive mechanism. This provides a simple travel security function for the handle section preventing the handle section from operating when the cleaning tool with its acting member is not coupled thereto as described above. Accordingly it is sufficient to decouple the cleaning tool from the handle section to activate the travel security _15- PCT/EP02/01724 function. Further steps for blocking, for example, the ON/OFF switch of the handle sec-tion or any other devices are not necessary. It is also helpful to arrange such an acting member in the cleaning tool, which member, in coupled condition, corresponds or com-municates with a reacting member in the handle section so that operation of the handle section with incompatible cleaning tools can be prevented, because the manufacturer does not as a rule equip such incompatible cleaning tools with an acting member that would be capable of communicating with the reacting member of the handle section.
Mechanical problems and risks incurred by the use of incompatible brush attachments can be eliminated. This represents a coding and/or detecting device or function in its simplest form, it is of relatively straightforward construction and permits merely a decision to be made as to whether a cleaning tool is coupled to the handle section or whether the cleaning tool coupled to the handle section is compatible.

For exceptional situations provision may also be made for the acting member typi-cally provided in the cleaning tool, for example, a transponder or the like or the coding device to be made available to the end user as a separately handleable isolated part or to provide it on the handle section itself. This approach offers itself, for example, when the end user is already in possession of a handle section equipped with an operation inhibit-ing device but has a household supply of brushing or cleaning tools available which are not equipped with an enabling element or an acting member for deactivation of the inhib-iting function of the handle section or handhold. To assure usability of these typically older replacement cleaning tools which, while being mechanically compatible with the more recent handhold, do not have as yet an enabling element which would be suited for communication with, and deactivation of, the inhibiting device provided in the handle sec-tion, a meaningful approach may therefore be to make the enabling element or the acting member or transponder available to the end user as a separately handleable component, providing for these exceptional situations a fastening device on the handle section to fasten the enabling element there. This makes it possible, for example, for the end user to fasten this enabling element or acting member directly to the handle section or hand-hold equipped with the inhibiting device, as on the exterior of the housing in the area of the reacting member of the handle section, and to deactivate for such special or excep-tional cases the inhibiting device of the handle section by arranging the acting member on the handle section itself and not on the cleaning tool. As a result, the handle section is also operable with cleaning tools which, while being mechanically compatible, are not as yet equipped with an enabling function or an acting member communicating with the in-hibiting device. This solution may also be contemplated when for cost reasons, for example, not all of the replacement cleaning tools compatible or mechanically mating with the handle section or handhold are equipped with such an enabling element, a coding device or an acting member. It will be understood, of course, that the solution involving the fastening of the enabling element directly to the handle section as by its user is an exceptional situation, and that as a rule the enabling element should be arranged on the brush section or cleaning section.

Still further, the coding/detecting device may also be configured so as to enable the coupling of a cleaning tool allowing for a few possibilities of distinction of cleaning tools (multi-bit information). While the coding and/or detecting device or function initially described allows, for example, only a yes/no decision, that is, a decision as to whether or not a compatible cleaning tool is coupled to the handle section, a modified coding and/or detecting device or function allowing, for example, the identification of two, four or six different codings of the cleaning tool enables further functions to be performed in addition to the travel security function. Thus, for example, it is possible for the handle section to identify whether a toothbrush designed for adults (hard bristles) or a toothbrush designed for children (soft bristles) is coupled to the handle section, whether an interproximal cleaner is used in lieu of a toothbrush, or also to distinguish between other parameters.
Where applicable, the respectively detected coding can be used for selectively driving the control device for the drive mechanism controlling, for example, the speed of the drive such as the rotational frequency, or the recommended cleaning period or the like. In the event of provision being made for a coding or a coding and/or detecting device or function with few (between about two and about ten) possibilities of distinction, it is however not possible as yet to identify an individual cleaning tool from a million of commercially avail-able cleaning tools. With these limited possibilities of distinction it is at best possible to identify a special type of cleaning tool (child toothbrush, adult toothbrush, interproximal brush, dental flosser, each configured as an attachment to the handle section) and to make a distinction between a few individualized cleaning or brushing tools.

When it is desired to detect with the coding and/or detecting device or function every single individual cleaning tool produced by the manufacturer which is adapted to be coupled to the handle section as a compatible part, allowance need be made for a multi-plicity of possibilities of distinction (multi-bit information) in the range from about 106 to about 1012, for which purpose a transponder or similar electronic device is typically used.
In this case the identification of an individual cleaning tool supplied by the manufacturer and coupled to the handle section is possible. In addition to the possibilities previously mentioned in connection with simpler coding solutions, this provides the prerequisite for the ability to determine, for example, the degree of wear of the cleaning tool more accu-rately by evaluating the tool history. Where replacement cleaning tools with chemical additives are used, the date of manufacture indicated in the coding enables use by"
dates to be identified or predetermined cleaning or maintenance intervals of the cleaning tool to be indicated or complied with.

Regardless of how simple or complex the coding of the cleaning tool and the coding and/or detecting device or function, the enabling function for the inhibiting function on the handle section assures in each case a travel security function by decoupling the in particular compatible cleaning tool from the handle section, thereby preventing operation of the handle section. Setting the handle section in operation is likewise prevented with any one of these coding solutions, irrespective of whether a 1-bit or multi-bit solution is employed, provided the cleaning tool does not have a coding or enabling element in the first place. When such a cleaning tool which is not coded or not equipped with an ena-bling element is coupled to the handle section, the reacting member, transmitter, receiver or similar reading device positioned in the handle section is unable to communicate with the acting member, receiver, transmitter, transponder or similar device not provided in the incompatible cleaning tool, so that precisely as in the case of a cleaning tool which is compatible but not coupled to the handle section, the presence of this incompatible cleaning tool is not recognized on the handle section, as a result of which the handle sec-tion cannot be set in operation due to the absence of the enabling element and the atten-dant lack of possible deactivation of the inhibiting device.

In the basically most straightforward embodiment of the coding of the cleaning tool or the coding and/or detecting device or function in the handle section of the electric dental cleaning device, care has to be taken only to ensure that the coding and/or de-tecting device or function in the handle section is in a position to recognize whether or not a proper, i.e., compatible cleaning tool is coupled to the handle section. If such a proper, i.e., compatible cleaning tool is not coupled to the handle section, the handle section can-not be set in operation, because the cleaning tool has no associated enabling element suitable for deactivation of an inhibiting device provided in the handle section. By con-trast, when a compatible cleaning tool equipped with the enabling element or the proper coding is coupled to the handle section, it is not later than on actuation of the ON/OFF
switch on the handle section that the presence of the proper coding or of the enabling element will be detected by means of a detecting device in the handle section, causing deactivation of the inhibiting device and setting the handle section in operation, so that the cleaning end, for example, the brush head of the cleaning tool, is set in operation by the drive mechanism of the handle section.

Insofar, the present invention also relates to a method of operating an electrical tooth cleaning or tooth brushing device comprised of a handle section and a cleaning tool adapted to be attached or coupled thereto, as for example, a brush attachment or the like, wherein the handle section and the cleaning tool communicate with each other in coupled condition or transmit or exchange data in noncontacting fashion, or devices being pro-vided in the handle section which are in a position to detect whether a cleaning tool is coupled to the handle section and/or whether the cleaning tool coupled to the handle sec-tion is a cleaning tool compatible with the handle section. When no cleaning tool is coupled to the handle section, this information is used for suppressing an activation of the electric drive of the handle section as by means of the ON switch provided on the handle section. This may be accomplished by an operation inhibiting device in the handle sec-tion. Hence it is not possible to set the handle section in operation with the cleaning tool not coupled or attached thereto, whereby a comfortable travel security function is pro-vided. A further feature characteristic of the method is that the cleaning tool includes an enabling function signaling to a detecting device arranged in the handle section that the cleaning tool is coupled to the handle section and the inhibiting device can be deactivated so that the dental cleaning appliance can be set in operation by turning on the electric drive. If however the cleaning tool is not equipped with such an enabling element, even in _19- PCT/EP02/01724 coupled condition of cleaning tool and handle section the drive of the handle section can-not be activated because in the absence of an enabling element on the cleaning tool it has to be assumed that a cleaning tool incompatible with the handle section is involved.

Further embodiments of the method also include the step of coding the different cleaning tools to be coupled to the handle section on a person-specific, cleaning-tool-specific or similar basis, hence enabling the handle section or handhold to be informed, via a corresponding coding/detecting device, not only of the coupled or non-coupled con-dition of a cleaning tool or a compatible cleaning tool but also of the type of cleaning tool used or the individual using the cleaning tool, so that corresponding parameters or also operating parameters of the handle section can be set or stored as person-and/or cleaning-tool-specific data. These individual approaches are explained in detail within the scope of the description of the devices and also pertain to the present method as features essential to the present invention. It will be understood that within the scope of the present application the terms operation inhibiting device and coding and/or detecting de-vice or function or recognition device as well as the terms enabling element and coding device or coding means or device and function are used as synonyms and may be used interchangeably in each individual case without departing from the scope of the invention.

Further objects, advantages, features and application possibilities of the present invention will become apparent from the subsequent description of embodiments illus-trated in the accompanying drawings. It will be understood that any features described and/or represented by illustration, whether used singularly or in any meaningful combina-tion, form the subject-matter of the present invention, irrespective of their summary in the claims or their back reference.

In the drawings, FIG. 1 is a perspective view of an electrical toothbrush having a handle section and a brush attachment attachable thereto;

FIG. 2 is a schematic longitudinal sectional view of the handle section of the elec-trical toothbrush of FIG. 1, showing its housing and, arranged therein, the drive motor with gearing and drive shaft, the storage battery for the drive motor, and the charging module for the storage battery;

FIG. 3 is a schematic view of an electrical toothbrush having a brush attachment with a transponder adhesive-bonded thereto or integrated therein and a corresponding detecting device for the noncontacting transmission of data in the handle section accord-ing to a further preferred embodiment of the invention;

FIG. 4 is a perspective view of the toothbrush of FIG. 3;

FIG. 5 is a sectional detail view of a toothbrush similar to FIGS. 3 and 4, showing the arrangement of a transponder chip in a coding ring provided at the end of the brush attachment, and a transmitter coil and a receiver coil together with an associated elec-tronic evaluation device in the handle section, with the brush attachment and the handle section being shown in coupled condition;

FIG. 6 is a schematic perspective view of an embodiment of the handle section of the invention with the housing removed therefrom;

FIG. 7 is a schematic perspective view of the forward portion of a further embodi-ment of the handle section with the housing removed therefrom;

FIG. 8 is a longitudinal sectional view of a further embodiment of the coupling end of an embodiment of the handle section;

FIG. 9 is a cross-sectional view of the handle section of FIG. 7, with the section plane being arranged approximately in the region of the coil substantially perpendicular to the longitudinal axis or axis of rotation of the drive shaft;

FIG. 10 is a partial view of an embodiment of the brush attachment, showing the wall of the shank partially broken away in the area of a profiled sleeve which is shown in section;

FIG. 11 is a longitudinal sectional view of the brush attachment of FIG. 10;

FIG. 12 is a cross-sectional view of the brush attachment of FIG. 10 in the region of the coil, with the section plane being arranged essentially perpendicular to the longitu-dinal axis or axis of rotation;

FIG. 13 is a schematic perspective view of the profiled sleeve showing trans-ponder and coil fitted thereto and the adjoining plug-on shaft;

FIG. 14A is a perspective view of the profiled ring with transponder and coil, shown partly withdrawn from the shank of the brush attachment;

FIG. 14B is a view of the brush attachment showing the coil wound about the shank or tube;

FIG. 15 is a side view of the profiled ring with transponder and coil and portions of the plug-on shaft of the brush attachment;

FIG. 16 is a view of the arrangement of FIG. 15, but turned through an angle of about 900;

FIG. 17 is a sectional view of the arrangement of FIG. 15, but turned through an angle of about 1800;

FIG. 18 is a representation similar to FIG. 5, showing a modified arrangement of the coils and ferrite bodies being provided to improve the coupling factor of the coils; and FIG. 19 is a schematic view, in the form of a block diagram, of the control device with reading device, electronic evaluating unit and operation inhibiting device as compo-nent part of the handle section, and the transponder as component part of the brush attachment, with the handle section and the brush attachment being coupled mechani-cally electromagnetically and/or magnetically, preferably inductively, to explain the principles of the arrangement.

The electrical toothbrush shown in the Figures has a handle section 10 with a closed housing 26 accommodating, among other components and as illustrated in FIG. 2, in a manner known in the art an electric motor 22, a power supply, in particular a storage battery 24 adapted to be coupled to a charging station through a charging module 28 dis-posed at the bottom, and a control device 18 which may include a printed circuit board with a microprocessor or an ASIC or other electrical components. Adapted for coupling engagement with the end of the handle section 10 is a brush attachment 20 or replace-ment brush serving as brushing or cleaning tool which, as the case may be, can be color coded for its specific user. By means of a coupling device 30 the brush attachment 20 can be mechanically coupled to the handle section 10 in order to transmit the driving motion of the electric motor to the brush head 14 of the brush attachment 20 via a drive shaft 16 mounted in the handle section 10. The coupling device 30 which may be made of one or several parts or portions comprises a positive- or frictional-engagement element for positioning the cleaning tool body in its proper location and, in addition, a drive coupling which transmits the driving motion of the drive to the brush head 14 of the brush attachment 20. Protruding from the end of the handle section 10 is a drive shaft 16 adapted to be driven in a rotating oscillating or rotating fashion by the drive motor 22 via a gearing 12 in a manner equally known in the art, forming an axis of rotation 72. The drive shaft 16 has a coupling portion 32 adapted to receive by positive or frictional engagement therewith a complementary coupling portion of a plug-on shaft 62 arranged in the cleaning tool 20, so that the driving motion is transmitted, enabling the brush head 14 of the brush attachment to be driven in an alternating oscillating manner, oscillating for example at a swivel angle in the range of between 10 and 60 and at a frequency in the range from 40 to 150 Hz, for example, with an amplitude of between 0.05 mm and 2 mm and a frequency in the range from about 100 Hz to 400 Hz, etc. about an axis of rotation 72 and/or swivel axis 58. Details of the mechanical coupling and the drive or the driving motion or the structural concept of handle section and brush attachment are disclosed in applicant's publications WO 91/07117 (05544), WO 94/12121 (05824), WO 99/20202 (06210), WO 98/01083 (06107), WO 98/47444 (06176).

The control device 18 has an operation inhibiting device 36 or inhibiting function operating, for example, electronically, which inhibits the drive of the handle section 10, particularly the electric motor 22, and enables the drive or permits switching on of the electric motor 22 by means of an ON switch 56 on the handle section 10 only when or after a compatible brush attachment 20 is attached to the handle section 10.
The elec-tronic operation inhibiting device 36 is activated and deactivated by means of an enabling element 38 or an enabling function provided on the brush attachment 20. The enabling function or the enabling element 38 can have a coding as a so-called electronic key.

To identify the respectively attached brush attachment 20, provision is made on the handle section 10 for a coding/detecting device or a device for detecting the presence of the enabling element 38. In response to a signal from this device or coding/detecting device, the control device 18 or inhibiting function enables or does not enable the drive or electric motor 22 so that the electric motor 22 can be set in operation by means of the ON
switch 56, as the case may be.

Provision is generally made to provide in the brush section or brush attachment 20 a data or information memory, in particular for digital information, which then performs a wireless transmission or exchange of data, that is, without a conductive connection be-tween the brush section and the handle section, with a data or information reader in the handle section or handhold 10 of the electrical toothbrush.

Figures 3 to 5 show an embodiment of an electrical toothbrush according to the invention with wireless data transfer between brush section and handle section, in which the presence of the respective brush attachment 20 coupled to the handle section 10 or properties of the brush attachment 20 are detected or determined via digital signals. For this reason the brush attachment 20 is equipped with a transponder 42 which can be bonded by an adhesive on or to the brush attachment 20 as in the form of a label referred to as smart label (FIG. 4). Advantageously, the transponder 42 may also be contained in the colored slip-on ring 52 at the end of the brush attachment 20 (cf. FIGS. 3 and 5).
Provided in the handle section 10 is a detector or reading device 44 which is tuned to the transponder 42 and serves both as a signal transmitter and signal receiver.
The detector or reading device 44 in the handle section 10 first transmits electromagnetic waves via the coil 46 to the coil 48 connected to the transponder 42 in order to supply the transponder 42 or its microchip with energy for activation. The transponder 42 stores the energy, is activated and transmits a specific, stored ID or signal or data back to the detector or reading device 44, which receives said ID, signal or data, identifies it by means of an electronic evaluating unit 50 and emits a corresponding signal to the control device 18 or inhibiting device 36 of the handle section 10. The coils 46 and 48 can be operated as both a transmitter and receiver. In a preferred embodiment they are arranged opposite each other at the respective ends of the brush attachment 29 and the handle section 10 (cf. FIG. 5). The brush attachment 20 can be identified or its presence on the handhold recognized by means of the ID or data sent back from the transponder 42.

FIG. 6 is a schematic perspective representation of an embodiment of a handle section 10 according to the invention. The handle section 10 has as subassemblies a gearing 12 with drive shaft 16, a control device 18, an electric motor 22 or drive, a power supply such as storage batteries 24 or batteries, and a charging module 28.
The prefera-bly water-tight housing 26 enclosing the handle section 10 has been removed in the representation in FIG. 6. The mechanical coupling device 30 to effect coupling engage-ment between the brush attachment 20 with its brush head 14 and the handle section 10 has a coupling portion 32 on the drive shaft 16 and a coupling portion 34 on the handhold 10. In the present embodiment the inhibiting device 36, the reading device 44 and an electronic evaluating unit 50 are part of the control device 18, which can be configured as an ASIC for example and includes a microcontroller or microprocessor and, where appli-cable, further electronic components or only one discrete circuit. It will be understood, of course, that the electronic components, that is, the control device 18, the inhibiting device 36, the reading device 44 and the electronic evaluating unit 50, can also be implemented by discrete electronic components if required.

Positioned underneath the coupling portion 34 and above the gearing 12 is a coil 46 which is connected, via connecting lines not shown in FIG. 6, to the control device 18 or the reading device 44 and to the electronic evaluating unit 50. In the present embodi-ment this coil 46 is positioned in the area of a swivel bearing 58 of the handle section 10, which bearing allows the drive shaft 16 to execute a special additional driving motion. For constructive design details, reference is made to applicant's patent application WO
98/01083.

From this representation of FIG. 6 as well as that of FIG. 7, showing on an enlarged scale the head end portion of the handle section 10 with the coil 46, which varies in geometry and position from that in FIG. 6, it becomes apparent that the turns of the coil 46 encompass or enclose essentially a longitudinal axis 72 of the handle section 10 or the axis of rotation of the drive shaft 16. Furthermore, from these FIGS. 6 and 7 as well as from FIGS. 8 and 9 it can be seen that the winding plane or turn plane of the coil 46 is aligned essentially perpendicular to the longitudinal axis 72 or the axis of rotation. The individual construction and arrangement of the coil 46 depends not only on the required coupling factors between the coil 46 of the handle section 10 and the coil 48 of the brush attachment 20 but also on the geometrical fitting conditions in the area of the upper por-tion of the handle section 10. Evidently, therefore, the turn area of the coil 46 can also have, for example, an angle other than a right angle relative to the longitudinal axis 72. It is also possible to accommodate the coil 46 at other positions in the handle section 10 than those shown in the embodiments of FIGS. 6 to 9. The essential point is for the coil 46 to be relatively adjacent or in close proximity to the area of the mechanical coupling device 30 of the handle section 10 while giving due consideration to the individual fitting conditions and geometries. Ultimately the arrangement must be selected so that when the brush attachment 20 is properly mechanically coupled to the handle section 10 the coupling of the coils 46, 48 or the coupling factor is such that data can be transferred between the brush attachment 20 and the handle section 10. With regard to the turn area of the coil 46 it should be noted that said turn area should be chosen as large as possible, again with due consideration to the geometry and fitting conditions on the handle section so that coupling with the enabling function or the enabling element 38 in the brush attachment is optimized or sufficient.

It should also be noted that according to the embodiments of FIGS. 8 and 9 the coil is positioned at the axial height of a plastic sleeve or bearing 60 for the drive shaft 16 in relation to the longitudinal or axis of rotation 72. This bearing 60 or the parts of the handle section 10 positioned in the region of the turn area of the coil 46, for example the drive shaft 16 or other housing parts, can be constructed of ferrite or have constituents made of ferrite, so that this approach, too, can contribute to improving coupling with the enabling element 38 or enabling function of the cleaning and brushing tool or brush attachment 20.

FIGS. 10, 11 and 12 show a partial view of the brush attachment 20, presenting among other things a special embodiment of the coupling end portion of the brush attachment 20. For better clarification of the mechanical coupling only the drive shaft 16 is shown, omitting the coupling portion 34 of the handle section 10. The brush attach-ment 20, in which the data or information memory or the enabling element 38 or an ena-bling function as, for example, a transponder 42, is accommodated, has a shank 40, which can be constructed as an elongated external mounting tube. Provided in the area of the coupling end of the brush attachment 20 is an annular groove 68 for the in particu-lar colored slip-on ring 52, which can be part of a sleeve accommodated in the shank 40.
Positioned in the shank 40 at the end close to the coupling is the sleeve, a profiled ring 54 or the like, which has an opening for passage of the shaft 16 to be received in a receiving socket 66 of a plug-on shaft 62. Furthermore, the profiled ring 54 has a receiving socket 64 for the coupling portion 34 of the handle section 10. The plug-on shaft 62 is in a driv-ing connection with the brush head 14 of the brush attachment and transmits the driving motion of the drive shaft 16 of the handle section 10 to the brush head 14.
For pertinent details reference is made to DE 197 45 876.9, for example.

From FIGS. 10 to 12 it becomes furthermore apparent that a coil 48 which corre-sponds with the coil 46 on the handle section 10 is positioned or fixed on the outer wall of the profiled sleeve 54 in the area of the end portion of the brush attachment 20. The turns of the coil 48 encompass the longitudinal axis 72 of the brush attachment 20 or the axis of rotation of the plug-on shaft 62. The turn area of the coil 48 is preferably aligned essentially at right angles to the longitudinal axis 72, but can also enclose an angle other than a right angle with the longitudinal axis 72, as is indicated by the broken line 84. The special construction and arrangement of the coil 48 depends not only on the desired coupling factor with the coil 46 in the handle section 10 but also on the geometrical condi-tions of the components in the brush attachment 20 and can include in particular angular positions of the turn area ranging between about 40 and 140 relative to the longitudinal axis 72.

The arrangement of the coil 48 at the profiled ring 54 or a sleeve becomes appar-ent from the schematic perspective representations of FIGS. 13 and 14. The coil 48 is preferably arranged in the area of the profiled sleeve 54 or profiled ring on the side close to the coupling end and encloses the outer wall of the profiled sleeve 54 in an annular configuration. It is also possible, of course, for the coil 48 to be injection-molded in the plastic profiled sleeve 54 or for the coil 48 to be fastened to the inner wall of the profiled sleeve 54. The data memory or the enabling element 38, which is preferably constructed as a transponder 42, is coupled to the coil 48 either directly (FIG. 14A) or via connecting lines 70. This transponder 42 is likewise fastened to the profiled sleeve 54 or has the plastic material of the profiled sleeve 54 injection-molded around it. Owing to the fact that all the components required for the noncontacting detection of the enabling element or for the data transfer are arranged on or at a separately handleable component of the brush attachment 20, which can be snappingly engaged as with the shank 40, it is possible to test the operation of the enabling element 38 or transponder 42 or coil 48 before assem-bly or final assembly of the brush attachment 20. FIG. 14B shows another embodiment of the brush attachment 20 or arrangement of the coil 48. In this embodiment the coil 48 is fastened to the tube or shank 40 of the brush attachment 20, preferably to the outer wall.
In detail, in the area of the mating coupling device or in a lower end area facing away from the brush head 14 the coil is wound onto the tube 40. The terminals of the coil 48 are connected to the transponder not shown in FIG. 14B.

FIGS. 15, 16 and 17 show in another representation the arrangement and position of the parts of the brush attachment 20 required for the enabling function. As such FIGS.

15 to 17 show only the ring, sleeve or profiled sleeve 54 and a part of the plug-on shaft 62 of the brush attachment 20. Again it can be seen that the coil 48 encloses the profiled sleeve 54 in an essentially annular, particularly circular-ring shaped configuration, and is fastened to an outer wall of the profiled ring 54. FIG. 15 also shows the relative arrange-ment of transponder 42, connecting line 70 and coil 48.

FIG. 18 shows a partial view of the mechanically coupled handle section 10 and the brush attachment 20. In this embodiment the coil 48 is positioned in the end portion of the shank 40, with the transponder 42 and the connecting lines 70 being arranged on the inner wall of the tubular shank 40, for example. The coil 46 on the handle section 10 is set slightly further inside than in the previous embodiments and is connected via con-necting lines 78 to the control device 18 or the inhibiting device 36 or the reading device 44 or the electronic evaluating unit 50. To improve the coupling factor between the coil 46 and the coil 48 it is possible to provide ferrite bodies 74, 76 in the handle section 10 and/or the brush attachment 20, which thus improve the coupling factor between the coils 46, 48 and permit where necessary a bigger constructively predetermined gap between the coils 46, 48.

From this showing, too, it becomes apparent that the coils 46, 48 enclose with their turns the longitudinal axis 72 or axis of rotation, and further that preferably the turn area of the coils 46, 48 is arranged essentially perpendicular to the longitudinal axis 72.

Basically it is possible for the coils 46, 48 to be positioned in any position on the handle section 10 and, respectively, the brush attachment 20, provided adequate coupling between the coils 46, 48 exists when the brush attachment 20 is mechanically coupled correctly to the handle section 10 so that the control device provided in the handle section can communicate with or receive data from the enabling element 38 or transponder 42 provided in the brush attachment 20 via an electric and/or magnetic, in particular inductive coupling.

FIG. 19 shows in a schematic block diagram the handle section 10 and the brush attachment 20, which are interconnectable via a mechanical coupling device 30 to estab-lish a driving connection. In addition, the brush attachment 20 and the handle section 10 are in a condition of noncontacting data transfer or communication exchange via an elec-tric, magnetic or electromagnetic, in particular inductive coupling 82 when the brush attachment 20 is mechanically coupled to the handle section 10. The basic architecture of a control device 18 or a reading device 44 as well as of the enabling element 38 or transponder 42 is generally known. In this context, reference is made to the text book "RFID-Handbuch, Grundlagen and praktische Anwendung induktiver kontaktloser Chip-karten" by Klaus Finkenzeller, 2nd edition, November 1999, Karl Hansa Verlag Munchen, ISBN 3-446-2278-7, in particular to chapter 3. Provided in the handle sec-tion 10 is the control device 18 with reading device 44, which includes the coil 46, a capacitor as resonant circuit and a generator that operates this resonant circuit at roughly its resonant frequency, for example in the range of between 13 and 14 megahertz, for example at 13.56 megahertz or also at 125 kilohertz 10 kilohertz. Connected to this circuit arrangement is the electronic evaluating unit 50 whose signals, amplified if neces-sary by means of an amplifier, are fed to the inhibiting device 36. Further signals can be fed to the inhibiting device 36 as input values if so required. An output signal of this in-hibiting device 36 is used to enable or inhibit the drive of the handle section 10 of the toothbrush, depending on whether the presence of the enabling element 38 of the brush attachment 20 is detected as being mechanically coupled correctly to the handle section or a corresponding data transfer has taken place or not.

Provided in or on the brush section or brush attachment 20 is the coil 48, to which a capacitor is connected. The two components likewise form a resonant circuit which is tuned to the transmit or resonant frequency of the resonant circuit of the reading device 44. Also provided are a rectifier, for example, a diode, and an energy storage device, for example, a capacitor, which supply the transponder 42, which is of the passive type in the present embodiment, with the energy necessary to operate the transponder, drawn from the high-frequency electromagnetic field radiated by the coil 46. It is also possible for a microcontroller 80 to be provided in the transponder 42, which - at least partly - opens and closes a switching device inserted parallel to the resonant circuit capacitor or coil 48, for example, a FET, as a load resistor of the transponder resonant circuit.
The clock fre-quency of these opening and closing cycles can lie, for example, in the 1 kHz to 100 kHz range, for example, at about 5 kHz, about 20 kHz or at about 212 kHz. By providing for switching on and off (modulating) of the load resistor in the transponder 42 at a clock fre-quency lying far below the resonant frequency, there arise in the reading device 44 side-bands adjacent to the transmit or resonant frequency of the resonant circuit of the reading device 44, which can be readily detected with a bandpass for example, resulting in an improved signal-to-noise ratio. It is also possible, preferably at low clock frequencies in the range between 1 kHz and 50 kHz, to use an envelope demodulator or the like for de-modulation. With this clock frequency it is also possible to transmit a multiplicity of data from the transponder 42 to the reading device 44, the data being defined by the clock rate or pulse train, the pulse duty factor or the pulse repetition frequency.
Ultimately these approaches amount to a load modulation by means of a subcarrier on the transponder 42, as the result of which the reaction of the transponder 42 to the reading device 44 can be simply and easily detected by means of known demodulation processes (for example, amplitude shift keying (ASK) with and without sideband). For further details reference is made to the previously mentioned RFID manual. Furthermore, the reading device will have to be adapted accordingly if there is no load modulation of the transponder resonant circuit and the phase (phase shift keying) or frequency (frequency shift keying) is modu-lated.

Data for implementing advantageous embodiments of the transfer system be-tween the brush attachment 20 and the handle section 10 will be given below by way of example. With a view to obtaining practicable coupling factors between the data memory in the brush attachment and the data reader in the handhold it has proven advantageous for the coils 46, 48 connected to the data memory and data reader for the wireless trans-fer of data to be arranged at a geometrical position roughly in the lower third of the shank 40 of the brush attachment 20 at the coupling end and in the upper quarter of the housing 26 of the handle section 10 at the coupling end. The closer the two coils 46, 48 are arranged relative to each other when the handle section and brush attachment are properly coupled, the easier it is to achieve the required coupling factors.
The coupling factors are also dependent on the projection of the congruent turn areas of the two coils 46, 48. As such it makes sense for the inclination of the turn areas of the coils relative to the longitudinal axis 72 or axis of rotation of the brush section and handle section not to deviate by more than about 50 from the common, optimal right-angled position.
Prefera-bly, the turns of the coils 46, 48 encompass or enclose the longitudinal axis 72 or axis of rotation of the handle section and the brush section, thereby achieving an adequate coupling between the coils 46, 48 in addition to enabling a geometrically practicable in-stallation site to be chosen in the brush section and/or the handle section.
The coils themselves can be conventional, wire-wound coils, with the exemplary data for coil 46 being about 10 3 turns at a turn diameter of about 15 mm 3 mm and a wire thickness of about 0.1 mm. The inductance can lie in the range of 2 pH, approximately, and the ohmic resistance in the range of 1 ohm. For coil 48 15 4 turns at a turn diameter of 9 mm 2 mm and a wire thickness of, for example, 0.06 mm can be provided. The induc-tance then lies in the range of about 2 pH to about 8 pH, preferably at about 5 pH at an ohmic resistance of the coil of about 1 ohm to about 10 ohm, preferably about 4 ohm. It will be understood, of course, that the coils 46, 48 can be constructed as conventional wire-wound coils or, alternatively, in the form of turns printed, for example, on a flexible plastic foil or on the transponder chip itself. The coupling of the two coils 46, 48 with properly mechanically coupled handle section and brush section can lie between 1 % and 8 %, preferably at about 5 %, the coupling of the coils 46, 48 being primarily of the induc-tive type in the present embodiment and with the frequencies in the two-digit MHz range therein employed. The diameter of the coils should not be less than 3 mm, approxi-mately. The previously mentioned data, given by way of example, for the dimensions and geometrical configuration of the coils does not apply to the use of ferrite bodies 74, 76 in accordance with FIG. 18. When allowance is made for such ferrite bodies 74, 76 for im-proving the coupling of the coils 46, 48 the above data can be modified accordingly. The quality factor of the transponder resonant circuit should be between Q - 5-15, preferably Q = 8-10, in order to minimize the dependence on tolerance-related fluctuations of the resonant frequency, particularly with regard to the phase shift. The quality factor is defined, among other things, by the wire thickness of the coil 48.

The data or information memory of the brush section, in particular transponder 42, and the data or information reader 44 in the handhold of the electrical toothbrush are commercially available as standard items in a wide variety of different specifications. For pertinent details reference is again made to the previously mentioned RFID
manual. It is also possible, of course, to include the data reader 44 in a user-specific integrated circuit (ASIC) provided in the handle section of the toothbrush.

List of References handle section 12 gearing 14 brush head 16 drive shaft 18 control device, control function (with microprocessor, etc.) brush attachment, brush section 22 electric motor, drive mechanism 24 storage battery 26 housing 28 charging module coupling device 31 mating coupling device 32 coupling portion 34 coupling portion 36 operation inhibiting device, operation inhibiting function (part of 18) 38 enabling element, enabling function shank, tube 42 transponder 44 reading device, reading function (part of 18) 46 coil (handle section) 48 coil (brush attachment) electronic evaluating unit, evaluating function (part of 18) 52 slip-on ring 54 profiled ring, profiled sleeve 56 ON switch, switch-on function 58 swivel bearing, swivel axis bearing 62 plug-on shaft 64 receiving socket (for 34) 66 receiving socket (for 32) 68 annular groove (for 52) 70 connecting line 72 longitudinal axis, axis of rotation 74 ferrite body 76 ferrite body 78 connecting line 80 microcontroller 82 inductive coupling 84 line

Claims

WHAT IS CLAIMED:

1. A handle section (10) of an electrical dental cleaning device, the handle section comprising:
a mechanical drive coupling (30) configured to connect and drive a related brush attachment (20);
an electric motor (22) mechanically coupled to the drive coupling (30) to drive the brush attachment (20);
a data receiver (44) connected to a coil (46) positioned and configured to receive data from the related brush attachment (20); and a motor controller (18) configured to automatically inhibit or allow operation of the motor in response to data received from the brush attachment (20).

2. The handle section (10) according to claim 1, wherein the data receiver (44) is activatable by a manually operable switch (56) on the handle section (10).

3. The handle section (10) according to claim 1 or claim 2, wherein the data receiver (44) reads data only when a related brush attachment (20) is mechanically coupled to the coupling (30).

4. The handle section (10) according to any one of claims 1 to 3, wherein the coil (46) inductively couples the handle section (10) to the related brush attachment (20) for data transmission.

5. The handle section (10) according to any one of claims 1 to 4, wherein the coil (46) is arranged in a portion of the handle section (10) adjacent to the drive coupling (30).

6. The handle section (10) according to any one of claims 1 to 5, wherein the coil (46) has one or several turns that encompass or enclose a longitudinal axis (72) of the handle section (10).

7. The handle section (10) according to claim 6, wherein the turn area of the coil (46) defines with the longitudinal axis (72) of the handle section (10) an included angle of between 140° and 40°.

8. The handle section (10) according to any one of claims 1 to 5, wherein the motor (22) is operable to set a drive shaft (16) in at least one alternating rotary motion about an axis of rotation (72).

9. The handle section (10) according to any one of claims 1 to 5, wherein the motor (22) is operable to set a drive shaft (16) in at least one alternating rotary motion about an axis of rotation (72) and in a swivel motion about a swivel axis (58) positioned essentially perpendicular to the axis of rotation.

10. The handle section (10) according to any one of claims 1 to 5, wherein the motor (22) is operable to set a drive shaft (16) in a swivel motion about a swivel axis (58) positioned essentially perpendicular to an axis of rotation (72).

11. The handle section according to any one of claims 1 to 10, wherein the controller (18) comprises at least a portion of an ASIC.

12. A removable brush attachment (20) for an electric dental cleaning device, the brush attachment comprising:
a drivable brush head (14);
a drive coupling (31) for releasably coupling the brush attachment (20) to a coupling device (30) of a related dental cleaning device handle section (10) so as to enable driving of the brush head by the handle section (10); and a data carrier connected to a coil (48) configured and arranged to transmit data from the data carrier to the handle section (10).

13. The brush attachment (20) according to claim 12, wherein the data carrier is activatable by a signal received from the handle section (10) via the coil (48).

14. The brush attachment (20) according to claim 12 or claim 13, wherein the data carrier is configured to transmit data only when the brush attachment (20) is mechanically coupled to the related handle section (10).

15. The brush attachment (20) according to any one of claims 12 to 14, wherein the coil (48) is arranged to inductively couple the brush attachment (20) to the related handle section (10) for data transmission.

16. The brush attachment (20) according to any one of claims 12 to 15, wherein the coil (48) is arranged in a portion of the brush attachment (20) adjacent to the drive coupling (31).

17. The brush attachment (20) according to any one of claims 12 to 16, wherein the coil (48) has one or several turns which encompass or enclose a longitudinal axis (72) of the brush attachment (20).

18. The brush attachment (20) according to claim 17, wherein the turn area of the coil (48) defines with the longitudinal axis (72) of the brush attachment (20) an included angle of between 140° and 40°.

19. The brush attachment (20) according to any one of claims 12 to 18, wherein the drive coupling comprises a profiled sleeve (54) and a plug-on shaft (62) received on a tubular shank (40), and wherein the data carrier is disposed on the profiled sleeve (54).

20. The brush attachment (20) according to any one of claims 12 to 19, wherein the data carrier comprises a passive transponder (42).

21. The brush attachment (20) according to claim 20, wherein the transponder (42) is configured to store digital data.

22. An electrical dental cleaning device with a handle section (10) according to any one of claims 1 to 11, in combination with a brush attachment (20) according to any one of claims 12 to 21.

23. The dental cleaning device according to claim 22, wherein the brush attachment (20) and the handle section (10) are configured both to transmit data from the handle section (10) to the brush attachment (20) to activate the data carrier, and to transmit from the brush attachment (20) to the handle section (10) data specific to the brush attachment (20).

24. The dental cleaning device according to claim 22 or claim 23, wherein the digital data is subjected to a coding function.

25. The dental cleaning device according to any one of claims 22 to 24, wherein the data carrier comprises a passive transponder (42), and wherein energy is transmitted from the handle section (10) to the brush attachment (20) to activate the passive transponder (42).

26. The dental cleaning device according to any one of claims 22 to 25, wherein the handle section (10) and the brush attachment (20) are inductively coupled by means of their coils (46, 48) for the exchange of data or the transmission of energy.

27. A toothbrush, comprising:
a brushhead portion having a bristle section in the vicinity of one end thereof;
a handle portion, with a driver assembly therein for driving the bristle section, wherein the brushhead portion and the handle portion are adapted such that the brushhead portion is removable from the handle portion;
communication means for data communication between the brushhead portion and the handle portion when the brushhead portion and handle portion are joined together;
a memory element in the brushhead portion for storing at least data which identifies the brushhead portion, the memory element having the capability of information being written to the memory element; and a microcontroller in the handle portion, wherein the memory element in the brushhead portion provides information therein to the microcontroller via the communication means.

28. A toothbrush of claim 27, wherein the information stored in the memory element includes an identification number associated with the brushhead, wherein the microcontroller in operation accumulates information concerning use of the brushhead.

29. A toothbrush of claim 27, wherein the information is operating information for the operation of the toothbrush for the brushhead.

30. A toothbrush of claim 27, wherein the memory element can store information concerning use of the toothbrush.

31. A toothbrush of claim 27, wherein the toothbrush will not operate unless the information from the memory element is valid, as determined by the microcontroller.

32. A toothbrush of claim 27, including a plurality of interchangeable brushheads, further including means for displaying user-specific information.

33. A toothbrush of claim 27, further including a device for providing operating information to a brushhead to define particular operations thereof.

34. A toothbrush of claim 27, wherein the communication means includes electrically conductive elements.

35. A toothbrush of claim 27, wherein the communication means comprise wireless components.

36. A toothbrush of claim 35, wherein the wireless components include coils on the brushhead and the handle for inductive communication.

37. A toothbrush of claim 27, wherein the microcontroller includes means for evaluating the time of past uses of the brushhead.

38. A brushhead portion of a toothbrush, the toothbrush including a handle portion to which the brushhead portion can be joined comprising:
a brushhead assembly which includes a bristle section, the brushhead assembly adapted to be removable from the handle portion of the toothbrush;
communication means for data communication between the brushhead assembly and a separate device; and a memory element in the brushhead assembly for storing data identifying the brushhead assembly, the memory element having the capability of information being written to the memory element.

39. A brushhead of claim 38, wherein said separate device is the handle portion of the toothbrush.

40. A brushhead of claim 38, wherein the communication means includes means for data communication with the handle portion when the brushhead assembly and the handle are joined together.

41. A brushhead of claim 38, wherein the information is operating information for proper operation of the toothbrush relative to said brushhead assembly.

42. A brushhead of claim 38, wherein the communication means includes electrically conductive elements.

43. A brushhead of claim 38, wherein the communication means comprises wireless components.

44. A brushhead of claim 42, wherein the wireless components include coils for inductive communication.

45. A toothbrush, comprising:
a brushhead portion having a bristle section in the vicinity of one end thereof;
a handle portion, with a driver assembly therein for driving the bristle section, wherein the brushhead portion and the handle portion are adapted such that the brushhead portion is removable from the handle portion;
communication means for data communication between the brushhead portion and the handle portion when the brushhead portion and handle portion are joined together;
a memory element in the brushhead portion for storing at least data which identifies the brushhead portion;
a microcontroller in the handle portion, wherein the memory element in the brushhead portion provides information therein to the microcontroller via the communication means; and a plurality of interchangeable brushheads, further including means for displaying user-specific information.

46. A toothbrush, comprising:
a brushhead portion having a bristle section in the vicinity of one end thereof;
a handle portion, with a driver assembly therein for driving the bristle section, wherein the brushhead portion and the handle portion are adapted such that the brushhead portion is removable from the handle portion;
communication means for data communication between the brushhead portion and the handle portion when the brushhead portion and handle portion are joined together;
a memory element in the brushhead portion for storing at least data which identifies the brushhead portion; and a microcontroller in the handle portion, wherein the memory element in the brushhead portion provides information therein to the microcontroller via the communication means, wherein the microcontroller includes means for comparing the actual use of the brushhead against a certain maximal cleaning period and for providing an indication when the certain maximal cleaning period has been met, indicating that the brushhead should be replaced.

47. An oral care system, comprising:
a toothbrush handle comprising a drive shaft;

a brush attachment configured to couple to the handle via the drive shaft, the brush attachment comprising:
a drivable portion comprising a brushing surface;
a body comprising a proximal end and a distal end, wherein the proximal end of the body comprises a handle engaging portion; and a drive train disposed within the body for moving the drivable portion, the drive train comprising a drive shaft coupling section at one end for receiving the drive shaft;
a radio signal transmitter associated with the brush attachment;
a detector associated with the handle and capable of detecting a signal from the radio signal transmitter; and a display capable of displaying information in response to the detector receiving the signal from the radio signal transmitter;
wherein the information is selected from the group consisting of application pressure, a tooth-cleaning time period of about 2 minutes or about 3 minutes, a time interval between cleaning operations, and any combination thereof.

48. The oral care system of claim 47, wherein the handle further comprises:
an electric motor operatively connected to the drive shaft; and a battery powering the electric motor.

49. The oral care system of claim 47, wherein the brushing surface oscillates.

50. The oral care system of claim 48, further comprising an electronic controller in communication with the detector.

51. The oral care system of claim 50, wherein the electronic controller can change an operating parameter of the electric motor in response to data communicated to the detector by the radio signal transmitter.

52. The oral care system of claim 47, wherein the detector is configured to send data to the radio signal transmitter, and the radio signal transmitter is conifgured to save the data.

53. A toothbrush, comprising:
a handle comprising a drive shaft; and a brush attachment configured to couple to the handle via the drive shaft, the brush attachment comprising:
a drivable portion comprising a brushing surface;
a body comprising a proximal end and a distal end, wherein the proximal end of the body comprises a handle engaging portion; and a drive train disposed within the body for moving the drivable portion, the drive train comprising a drive shaft coupling section at one end for receiving the drive shaft;
wherein a detector associated with the handle is configured to detect a signal from a radio signal transmitter associated with the brush attachment; and wherein the radio signal transmitter communicates with the radio signal detector during use to set a timer for a tooth cleaning time period of about 2 minutes or about 3 minutes.

54. A brush attachment for use with an electric toothbrush handle having a radio signal detector and an electric motor, comprising:
a drivable head comprising a brushing surface;
a body comprising a proximal end and a distal end, wherein the proximal end of the body comprises a handle engaging portion;
a drive train disposed within the body for moving the drivable head, the drive train comprising a drive shaft coupling section at one end for receiving a drive shaft of the electric toothbrush handle; and a radio signal transmitter configured to communicate with a radio signal detector of a handle, wherein the radio signal transmitter transmits a stored identifier associated with the head and wherein motion of the brushing surface is controlled in response to transmission of the identifier by the radio signal transmitter to the radio signal detector.

55. The brush attachment of claim 54, wherein the radio signal transmitter comprises a coil.

56. The brush attachment of claim 55, wherein the coil comprises at least one turn that encompasses a longitudinal axis of the brush attachment.

57. The brush attachment of claim 56, wherein a turn area of the coil is arranged at an angle of about 40 degrees to about 140 degrees relative to a longitudinal axis of the brush attachment.

58. The brush attachment of claim 56, wherein a turn area of the coil is substantially perpendicular to a longitudinal axis of the brush attachment.

59. A handle of an electrical dental cleaning device for use with a cleaning attachment, the handle comprising:
a coupling configured to releasably connect a cleaning attachment to the handle;
a drive shaft extending outwardly from the coupling and arranged to drive at least a portion of a cleaning attachment;
an electric motor operatively connected to the drive shaft;
a receiver or transceiver for non-contacting reception of electromagnetic energy from a coupled cleaning attachment; and an electronic controller that inhibits operation of the motor in response to the receiver or transceiver receiving electromagnetic energy transmitted by a coupled cleaning attachment, wherein the receiver or transceiver comprises a coil.

60. The handle according to claim 59, including a switch operable to activate both the coil and the electric motor.

61. The handle according to claim 59, wherein the receiver or transceiver receives electromagnetic energy emitted by a cleaning attachment only when a cleaning attachment is mechanically coupled to the handle.

62. The handle according to claim 59, wherein the receiver or transceiver inductively couples the handle to a cleaning attachment for transmitting electromagnetic energy.

63. The handle according to claim 59, wherein the receiver or transceiver is disposed adjacent to the coupling.

64. The handle according to claim 59, wherein the coil has turns encompassing an axis of rotation of a drive shaft driven by the electric motor.

65. The handle according to claim 59, wherein the coil has a turn area that defines, together with a longitudinal axis of the handle, an included angle of between about 40 and 140 degrees.

66. The handle according to claim 65, wherein the included angle is between about 80 and 100 degrees.

67. The handle according to claim 59, wherein the electric motor is coupled to the drive shaft to drive the drive shaft in an alternating rotary motion about an axis of rotation.

68. The handle according to claim 67, wherein the electric motor is also coupled to the coupling to drive the drive shaft about a swivel axis positioned essentially perpendicular to the axis of rotation.

69. The handle according to claim 59, wherein the electronic controller comprises an ASIC and/or micro-controller.

70. A cleaning attachment of an electric toothbrush, the cleaning attachment comprising:
a body comprising:
a proximal end region; and a distal end region opposite the proximal end region;
a cleaning portion supported at the distal end region of the body;
a coupling arranged at the proximal end region of the body, the coupling being configured to releasably attach the cleaning attachment to a handle of an electric toothbrush;
and a transmitter or transponder configured to transmit a coded signal from the cleaning attachment to a coupled handle of an electric toothbrush;
wherein the transmitter or transponder comprises a coil; and wherein the coil is disposed within, or adjacent to, the coupling at the proximal end region of the body.

71. The cleaning attachment according to claim 70, wherein the transmitter or transponder is activated by a coupled handle of an electric toothbrush.

72. The cleaning attachment according to claim 70, wherein the coded signal is transmitted only when the cleaning attachment is mechanically coupled to a handle of an electric toothbrush.

73. The cleaning attachment according to claim 70, wherein the coil operates at a resonant frequency of 13.56 MHz, plus or minus 10 percent.

74. The cleaning attachment according to claim 70, wherein the coil has turns that encompass an axis of rotation of a drivable shaft of the coupling.

75. The cleaning attachment according to claim 70, wherein the coil defines a turn area, that defines, together with a longitudinal axis of the cleaning attachment, an included angle of between about 40 and 140 degrees.

76. The cleaning attachment according to claim 70, wherein the coupling includes a profiled sleeve and a receiver shaft disposed within a tubular shank, and wherein the transmitter or transponder is arranged on the profiled sleeve or on the shank or is connected therewith.

77. The cleaning attachment according to claim 70, wherein the transmitter or transponder is passive.

78. The cleaning attachment according to claim 70, wherein the transmitter or transponder has a data memory for digital data.

79. The cleaning attachment according to claim 78, wherein the data memory has a storage capacity of between about 100 bit and 104 bit.

80. The cleaning attachment of claim 70, wherein the transmitter or transponder is a radio frequency identification device.

81. The cleaning attachment of claim 70, wherein the transmitter or transponder comprises an antenna.

82. The cleaning attachment of claim 70, wherein the transmitter or transponder is configured for non-contacting transmission of data from the cleaning attachment to a coupled handle of an electric toothbrush.

83. The cleaning attachment of claim 70, wherein the coupling comprises a drive coupling portion configured to engage a drive shaft of a handle of an electric toothbrush for transmission of motion from a drive shaft of a handle of an electric toothbrush to the cleaning attachment.

84. The cleaning attachment of claim 70, wherein the cleaning portion comprises a gum massager, bristles, or a tongue cleaner.

85. The handle of claim 70, wherein the receiver or transceiver is configured for non-contacting reading of data from a coupled cleaning attachment.

86. The handle of claim 85, wherein the electronic controller inhibits operation of the motor in response to reading data transmitted by a coupled cleaning attachment.

87. An electrical dental cleaning device, comprising:
(a) a handle comprising:
a coupling for connecting a cleaning attachment to the handle;
an electric motor for moving at least a portion of a cleaning attachment;
an electronic controller for controlling the electric motor; and a receiver or transceiver for non-contacting reception of electromagnetic energy from a coupled cleaning attachment, wherein the electronic controller inhibits operation of the motor in response to the receiver or transceiver receiving electromagnetic energy transmitted by a coupled cleaning attachment; and (b) a cleaning attachment comprising:
a transmitter or transponder for the non-contacting transmission of electromagnetic energy from the cleaning attachment to the handle wherein the transmitter or transponder comprises a coil and the receiver or transceiver comprises a coil.

88. The electrical dental cleaning device according to claim 87, wherein electromagnetic energy is transmitted between the cleaning attachment and the handle, the electromagnetic energy including data specific to the cleaning attachment.

89. The electrical dental cleaning device according to claim 88, wherein the transmitted electromagnetic energy includes operating parameters for operation of the cleaning attachment.

90. The electrical dental cleaning device according to claim 87, wherein electromagnetic energy is transmitted between the cleaning attachment and the handle and wherein the electromagnetic energy comprises data that is coded.

91. The electrical dental cleaning device according to claim 87, wherein the transmitter or transponder is passive, and wherein energy is transmitted from the handle to the cleaning attachment to activate the passive transmitter or transponder.

92. The electrical dental cleaning device according to claim 91, wherein the handle and the cleaning attachment are inductively coupled by means of the coils.

93. The electrical dental cleaning device of claim 87, wherein the receiver or transceiver is configured for non-contacting reading of data from the coupled cleaning attachment.

94. The electrical dental cleaning device of claim 87, wherein the transmitter or transponder is configured for non-contacting transmission of data from the cleaning attachment to the coupled handle of the electric toothbrush.

95. The electrical dental cleaning device of claim 94, wherein the electronic controller inhibits operation of the motor in response to reading data transmitted by the cleaning attachment.

96. The electrical dental cleaning device of claim 93, wherein the transmitter or transponder is configured for non-contacting transmission of data from the cleaning attachment to the coupled handle of the electric toothbrush.

97. The electrical dental cleaning device of claim 87, wherein the electric motor is coupled to a drive shaft to drive the drive shaft, and wherein the coupling comprises a drive coupling portion configured to engage the drive shaft of the handle for transmission of motion from the drive shaft to the cleaning attachment.

98. An electric toothbrush, comprising:
a handle;
a first coil arranged within or on the handle, wherein when energized the first coil emits electromagnetic wave energy;
a brush attachment, sized for use in an oral cavity, that couples to the handle, the brush attachment comprising a bristle section;

a second coil arranged within or on the brush attachment, wherein the second coil can receive electromagnetic wave energy emitted by the first coil of the handle when the brush attachment is coupled to the handle; and an electric motor operatively coupled to the brush attachment to move the bristle section when the brush attachment is coupled to the handle.

99. The electric toothbrush of claim 98, wherein the motor oscillates the bristle section.

100. The electric toothbrush of claim 99, wherein the motor oscillates the bristle section at a frequency of about 100 to about 400 Hz.

101. The electric toothbrush of claim 99, wherein the motor oscillates the bristle section about an axis of rotation through an angle of from about plus or minus 10 degrees to about plus or minus 60 degrees.

102. The electric toothbrush of claim 98, further comprising a shaft having a first end operatively connected to the motor and a second end that operatively connects to the brush attachment when the brush attachment is coupled to the handle.

103. The electric toothbrush of claim 102, wherein the first coil is in the shape of a ring having a hole therethrough.

104. The electric toothbrush of claim 103, wherein the shaft extends through the hole in the first coil.

105. The electric toothbrush of claim 102, wherein the second coil is in the shape of a ring having a hole therethrough.

106. The electric toothbrush of claim 105, wherein the shaft extends through the hole in the second coil.

107. The electric toothbrush of claim 98, wherein the handle further comprises a first annular body arranged to improve a coupling factor of the first coil.

108. The electric toothbrush of claim 107 wherein the first annular body comprises ferrite.

109. The electric toothbrush of claim 98, wherein the brush attachment further comprises a second annular body arranged to improve a coupling factor of the second coil.

110. The electric toothbrush of claim 109, wherein the second annular body comprises ferrite.

111. The electric toothbrush of claim 98, wherein the brush attachment further comprises an electric element that is powered by the second coil.

112. The electric toothbrush of claim 111, wherein the electric element is connected to the second coil by a connecting line.

113. The electric toothbrush of claim 111, wherein the electric element comprises at least one of a capacitor, a diode, a micro-controller, a rectifier, a resistor, and a transponder.

114. The electric toothbrush of claim 111, wherein the electric element transmits a signal to the first coil.

115. The electric toothbrush of claim 114, wherein the electric element modulates the signal to transmit information to the first coil.

116. The electric toothbrush of claim 111, wherein the electric element comprises a resistor.

117. The electric toothbrush of claim 111, wherein the electric element comprises a capacitor that forms a resonant circuit with the second coil.

118. The electric toothbrush of claim 111, wherein the electric element is spaced axially from the second coil along a longitudinal axis of the brush attachment.

119. The electric toothbrush of claim 111, wherein the handle further comprises an electronic control device that controls one or more operating parameters of the electric toothbrush.

120. The electric toothbrush of claim 98, wherein a turn area of the first coil is arranged at or about at a right angle to a longitudinal axis of the handle.

121. The electric toothbrush of claim 120, wherein a turn area of the second coil is arranged at or about at a right angle to a longitudinal axis of the brush attachment.

122. The electric toothbrush of claim 98, wherein the second coil converts electromagnetic wave energy received from the first coil to electrical energy.

123. The electric toothbrush of claim 98, wherein the second coil is positioned to be spaced apart from the first coil when the brush attachment is coupled to the handle.

124. The electric toothbrush of claim 98, wherein the bristle section comprises a plurality of individual bristles.

125. The electric toothbrush of claim 98, wherein the first coil comprises at least one turn that encompasses a longitudinal axis of the handle.

126. The electric toothbrush of claim 98, wherein a turn area of the first coil is arranged at angle of about 40 degrees to about 140 degrees relative to a longitudinal axis of the handle.

127. The electric toothbrush of claim 98, wherein the second coil comprises at least one turn that encompasses a longitudinal axis of the brush attachment.

128. The electric toothbrush of claim 98, wherein a turn area of the second coil is arranged at angle of about 40 degrees to about 140 degrees relative to a longitudinal axis of the brush attachment.

129. The electric toothbrush of claim 98, wherein at least one of the first coil and the second coil comprises a part of a radio-frequency-identification device.

130. The electric toothbrush of claim 119, wherein the electronic control device comprises a micro-controller or microprocessor.

131. The electric toothbrush of claim 119, wherein the electronic control device controls operation of the electric motor.

132. The electric toothbrush of claim 131, wherein the electronic control device controls the speed of the electric motor.

133. The electric toothbrush of claim 119, wherein the electronic control device communicates with the electric element of the brush attachment via the first and second coils.

134. The electric toothbrush of claim 133, wherein the electronic control device controls the one or more operating parameters of the electric toothbrush in response to a signal from the electric element.

135. The electric toothbrush of claim 119, wherein the electronic control device supplies a signal to the electric element of the brush attachment.

136. An electric toothbrush, comprising:
a handle;
a first coil arranged within or on the handle, wherein when energized the first coil emits electromagnetic wave energy;
a brush attachment, sized for use in an oral cavity, that couples to the handle, the brush attachment comprising a bristle section; and a second coil arranged within or on the brush attachment;
wherein the second coil can receive electromagnetic wave energy emitted by the first coil of the handle when the brush attachment is coupled to the handle;
wherein the brush attachment further comprises an electric element that is powered by the second coil;
wherein the handle further comprises an electronic control device that controls one or more operating parameters of the electric toothbrush; and wherein the operating parameter is selected from the group consisting of cleaning speed and cleaning frequency.

137. An electric toothbrush, comprising:
a handle;
a first coil arranged within or on the handle, wherein when energized the first coil emits electromagnetic wave energy;
a brush attachment, sized for use in an oral cavity, that couples to the handle, the brush attachment comprising a bristle section; and a second coil arranged within or on the brush attachment, wherein the second coil can receive electromagnetic wave energy emitted by the first coil of the handle when the brush attachment is coupled to the handle; and a display for displaying information relating to the operating parameter;

wherein the brush attachment further comprises an electric element that is powered by the second coil; and wherein the handle further comprises an electronic control device that controls one or more operating parameters of the electric toothbrush.

138. An electric toothbrush, comprising:
a handle;
a first coil arranged within or on the handle, wherein when energized the first coil emits electromagnetic wave energy;
a brush attachment, sized for use in an oral cavity, that couples to the handle, the brush attachment comprising a bristle section;
a second coil arranged within or on the brush attachment, wherein the second coil can receive electromagnetic wave energy emitted by the first coil of the handle when the brush attachment is coupled to the handle; and a display for indicating a predetermined maintenance interval for the brush attachment.

139. An electric toothbrush, comprising:
a handle;
a first coil arranged within or on the handle, wherein when energized the first coil emits electromagnetic wave energy;
a brush attachment that couples to the handle, the brush attachment comprising a bristle section;
a second coil arranged within or on the brush attachment, wherein the second coil can receive electromagnetic wave energy emitted by the first coil when the brush attachment is coupled to the handle;
an electric motor operatively coupled to the brush attachment to move the bristle section when the brush attachment is coupled to the handle; and a battery that powers the electric motor.

140. The electric toothbrush of claim 139, wherein the motor oscillates the bristle section.

141. The electric toothbrush of claim 140, wherein the motor oscillates the bristle section at a frequency between about 100 to about 400 Hz.

142. The electric toothbrush of claim 140, wherein the motor oscillates the bristle section about an axis of rotation through an angle between about plus or minus 10 degrees to about plus or minus 60 degrees.

143. The electric toothbrush of claim 139, further comprising a shaft having a first end operatively connected to the motor and a second end that operatively connects to the brush attachment when the brush attachment is coupled to the handle.

144. The electric toothbrush of claim 143, wherein the first coil is in the shape of a ring having a hole therethrough.

145. The electric toothbrush of claim 144, wherein the shaft extends through the hole in the first coil.

146. The electric toothbrush of claim 143, wherein the second coil is in the shape of a ring having a hole therethrough.

147. The electric toothbrush of claim 146, wherein the shaft extends through the hole in the second coil.

148. The electric toothbrush of claim 139, wherein the handle further comprises a first annular body arranged to improve a coupling factor of the first coil.

149. The electric toothbrush of claim 148, wherein the first annular body comprises ferrite.

150. The electric toothbrush of claim 148, wherein the brush attachment further comprises a second annular body arranged to improve a coupling factor of the second coil.

151. The electric toothbrush of claim 150, wherein the second annular body comprises ferrite.

152. The electric toothbrush of claim 139, wherein the brush attachment further comprises an electric element that is powered by the second coil.

153. The electric toothbrush of claim 152, wherein the electric element is connected to the second coil by a connecting line.

154. The electric toothbrush of claim 152, wherein the electric element comprises at least one of a capacitor, a diode, a micro-controller, a rectifier, a resistor, and a transponder.

155. The electric toothbrush of claim 152, wherein the electric element transmits a signal to the first coil and modulates the signal to transmit information to the first coil.

156. The electric toothbrush of claim 152, wherein the electric element comprises a resistor.

157. The electric toothbrush of claim 152, wherein the electric element comprises a capacitor that forms a resonant circuit with the second coil.

158. The electric toothbrush of claim 152, wherein the electric element is spaced axially from the second coil along a longitudinal axis of the brush attachment.

159. The electric toothbrush of claim 152, wherein the handle further comprises an electronic control device that controls one or more operating parameters of the electric toothbrush.

160. The electric toothbrush of claim 159, wherein the operating parameter is selected from the group consisting of cleaning speed and cleaning frequency.

161. The electric toothbrush of claim 159, wherein the electronic control device comprises a micro-controller or microprocessor.

162. The electric toothbrush of claim 159, wherein the electronic control device controls operation of the electric motor.

163. The electric toothbrush of claim 162, wherein the electronic control device controls the speed of the electric motor.

164. The electric toothbrush of claim 159, wherein the electronic control device communicates with the electric element of the brush attachment via the first and second coils.

165. The electric toothbrush of claim 159, wherein the electronic control device controls the one or more operating parameters of the electric toothbrush in response to a signal from the electric element.

166. The electric toothbrush of claim 159, wherein the electronic control device supplies a signal to the electric element of the brush attachment.

167. The electric toothbrush of claim 139, wherein a turn area of the first coil is arranged at or about at a right angle to a longitudinal axis of the handle.

168. The electric toothbrush of claim 167, wherein a turn area of the second coil is arranged at or about at a right angle to a longitudinal axis of the brush attachment.

169. The electric toothbrush of claim 139, wherein the second coil converts electromagnetic wave energy received from the first coil to electrical energy.

170. The electric toothbrush of claim 139, wherein the second coil is positioned to be spaced apart from the first coil when the brush attachment is coupled to the handle.

171. An electric toothbrush, comprising:
a handle;
a first coil that is arranged within or on the handle, wherein when energized the first coil emits electromagnetic wave energy;
a brush attachment that couples to the handle, the brush attachment comprising a bristle section;
a second coil that is arranged within or on the brush attachment, wherein the second coil can receive electromagnetic wave energy emitted by the first coil when the brush attachment is coupled to the handle and wherein the second coil powers an electric element located in the brush attachment;
an electric motor;
a shaft having a first end operatively connected to the motor and a second end that operatively connects to the brush attachment when the brush attachment is coupled to the handle, wherein the electric motor oscillates the bristle section when the electric motor is energized; and a battery that powers the electric motor.

172. The electric toothbrush of claim 171, wherein the motor oscillates the bristle section at a frequency between about 100 to about 400 Hz.

173. The electric toothbrush of claim 171, wherein the motor oscillates the bristle section about an axis of rotation through an angle between about plus or minus 10 degrees to about plus or minus 60 degrees.

174. The electric toothbrush of claim 171, wherein the handle further comprises a first annular body arranged to improve a coupling factor of the first coil.

175. The electric toothbrush of claim 174, wherein the first annular body comprises ferrite.

176. The electric toothbrush of claim 174, wherein the brush attachment further comprises a second annular body arranged to improve a coupling factor of the second coil.

177. The electric toothbrush of claim 176, wherein the second annular body comprises ferrite.

178. The electric toothbrush of claim 171, wherein the electric element is connected to the second coil by a connecting line.

179. The electric toothbrush of claim 171, wherein the electric element comprises at least one of a capacitor, a diode, a micro-controller, a rectifier, a resistor, or a transponder.

180. The electric toothbrush of claim 171, wherein the electric element transmits a signal to the first coil and modulates the signal to transmit information to the first coil.

181. The electric toothbrush of claim 171, wherein the electric element comprises a resistor.

182. The electric toothbrush of claim 171, wherein the electric element comprises a capacitor that forms a resonant circuit with the second coil.

183. The electric toothbrush of claim 171, wherein the electric element is spaced axially from the second coil along a longitudinal axis of the brush attachment.

184. The electric toothbrush of claim 171, wherein the handle further comprises an electronic control device that controls one or more operating parameters of the electric toothbrush.

185. The electric toothbrush of claim 184, wherein the operating parameter is selected from the group consisting of cleaning speed and cleaning frequency.

186. The electric toothbrush of claim 184, wherein the electronic control device comprises a micro-controller or microprocessor.

187. The electric toothbrush of claim 184, wherein the electronic control device controls operation of the electric motor.

188. The electric toothbrush of claim 187, wherein the electronic control device controls the speed of the electric motor.

189. The electric toothbrush of claim 184, wherein the electronic control device communicates with the electric element of the brush attachment via the first and second coils.

190. The electric toothbrush of claim 189, wherein the electronic control device controls the one or more operating parameters of the electric toothbrush in response to a signal from the electric element.

191. The electric toothbrush of claim 184, wherein the electronic control device supplies a signal to the electric element of the brush attachment.

192. The electric toothbrush of claim 171, wherein the second coil is positioned to be spaced apart from the first coil when the brush attachment is coupled to the handle.

193. The electric toothbrush of claim 171, wherein the first and second coils are each provided in the shape of ring having a hole therethrough and the shaft extends through the hole of each coil.

194. An electric toothbrush, comprising:
a handle;

an electromagnetic emitter that is arranged within or on the handle, wherein the electromagnetic emitter comprises a plurality of windings and wherein the electromagnetic emitter emits electromagnetic wave energy when energized;
a brush attachment that couples to the handle, the brush attachment comprising a bristle section;
a electromagnetic receiver that is arranged within or on the brush attachment that receives electromagnetic wave energy emitted by the electromagnetic emitter when the brush attachment is coupled to the handle;
wherein the electromagnetic receiver comprises a plurality of windings and wherein the electromagnetic receiver powers an electric element located in the brush attachment;
an electric motor;
a battery that powers the electric motor;
a shaft having a first end operatively connected to the motor and a second end that operatively connects to the brush attachment when the brush attachment is coupled to the handle;
wherein the electric motor oscillates the bristle section when the electric motor is energized; and an electronic control device disposed in the handle that controls the electric motor.

195. An electric toothbrush, comprising:
a handle;
a brush attachment that couples to the handle, the brush attachment comprising a bristle section;
communication means for non-contacting electromagnetic wave communication between the handle and the brush attachment;
an electric element located within or on the brush attachment; and an electric motor operatively coupled to the brush attachment to move the bristle section when the brush attachment is coupled to the handle;
wherein the handle transmits electromagnetic waves comprising energy to the brush attachment to power the electric element, and wherein the brush attachment transmits electromagnetic waves comprising an identification signal to the handle.

196. A dental cleaning device, comprising:
a handle section; and a cleaning tool that couples to the handle section and comprises:
a bristle section;
an electric element; and an electromagnetic wave receiving means in electrical contact with the electric element and configured to provide electrical power to the electric element in response to receiving an electromagnetic wave; and an electric motor operatively coupled to the cleaning tool to move the bristle section when the cleaning tool is coupled to the handle; and wherein the electric element is operable to transmit a radio signal, and wherein the handle section is operable to control one or more operating parameters of the cleaning device based, at least in part, on radio signals transmitted from the electric element.

197. The dental cleaning device of claim 196, wherein the handle section comprises:
a signal receiver that can receive signals transmitted from the electric element; and an electronic controller in electrical contact with the signal receiver and operable to control one or more operating parameters of the cleaning device in response to signals received from the electric element.

198. The dental cleaning device of claim 196, wherein the handle section includes an electronic controller in electrical contact with the electric motor, and wherein the electronic controller controls one or more operating parameters of the electric motor based, at least in part, on signals received from the electric element.

199. The dental cleaning device of claim 196, wherein the handle section comprises an electromagnetic emitting means for emitting electromagnetic waves.