CA2457929A1 - Intelligent line switch - Google Patents
Intelligent line switch Download PDFInfo
- Publication number
- CA2457929A1 CA2457929A1 CA002457929A CA2457929A CA2457929A1 CA 2457929 A1 CA2457929 A1 CA 2457929A1 CA 002457929 A CA002457929 A CA 002457929A CA 2457929 A CA2457929 A CA 2457929A CA 2457929 A1 CA2457929 A1 CA 2457929A1
- Authority
- CA
- Canada
- Prior art keywords
- line switch
- control device
- switch
- control
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/08—Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/04—Special arrangement or operation of ventilating devices
- E03D9/05—Special arrangement or operation of ventilating devices ventilating the bowl
- E03D9/052—Special arrangement or operation of ventilating devices ventilating the bowl using incorporated fans
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/0214—Hand-held casings
- H01H9/0228—Line cord switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/955—Proximity switches using a capacitive detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/96038—Inductive touch switches
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Molecular Biology (AREA)
- Electronic Switches (AREA)
- Keying Circuit Devices (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Selective Calling Equipment (AREA)
Abstract
An intelligent line switch and particularly a line switch equipped with an approaching or touching sensor, and an adjusting knob with a sensor of adjusting sensitivity. The line switch includes a switch operable in a manual mode or an automatic mode. The manual mode may control an electric device in a conventional way. When switched to the automatic mode, the sensor can detect approaching or touching of operator's hand. Thus operator can easily actuate operations of ON or OFF or adjustment of the electric device by merely a single motion such as approaching or touching with one hand without the complicated operations of approaching, grasping, depressing and leaving occurred to the conventional line switches.
Description
INTELLIGENT LINE SWITCH
BACKGROUND OF THE INVENTION
1. Field of the Invention S The invention relates to a line switch equipped with an approaching or touch sensor for controlling electric devices by induction or also equipping conventional depressing operation.
BACKGROUND OF THE INVENTION
1. Field of the Invention S The invention relates to a line switch equipped with an approaching or touch sensor for controlling electric devices by induction or also equipping conventional depressing operation.
2. Description of the Prior Art The commonly used switches for controlling electric devices can be l0 classified in wall switches, pulling switches, device switches directly mounted onto the electric devices or line switches installed on the power cord.
The line switch 1, as shown in FIGS. 1 and 2, generally is installed on a power cord 2 that provides power supply to the electric device. It includes a button switch 11. Depressing the button switch 11 can control ON or OFF of 15 the electric device.
The line switch set forth above adopts conventional manual operation.
The operation usually includes the following steps:
1. Hand approaches the line switch 1 (as shown in FIG. 3) and prepares to grasp the line switch 1.
2. Hand grasps the line switch 1 (as shown in FIG. 4) and prepares to depress the button switch 11.
The line switch 1, as shown in FIGS. 1 and 2, generally is installed on a power cord 2 that provides power supply to the electric device. It includes a button switch 11. Depressing the button switch 11 can control ON or OFF of 15 the electric device.
The line switch set forth above adopts conventional manual operation.
The operation usually includes the following steps:
1. Hand approaches the line switch 1 (as shown in FIG. 3) and prepares to grasp the line switch 1.
2. Hand grasps the line switch 1 (as shown in FIG. 4) and prepares to depress the button switch 11.
3. Thumb moves to the button switch 11 and depresses the button switch 11 (as shown in FIG. 5) to control or adjust ON or OFF of the electric device.
4. Finally, the thumb releases and the palm opens, the hand moves away from the line switch 1 (as shown in FIG. 6).
It takes many steps to operate and control the line switch 1. The operation procedures of hand grasping and finger depressing are primitive and cumbersome. They cannot achieve the control function instantly. In the event that the line switch 1 is suspended in the air, it tends to swing and is difficult to grasp. Moreover, some conventional line switch 1, besides offering the function of switching ON or OFF of the electric device, also can adjust light brightness or intensity of the electric device. The operation procedures of the button switch cannot fully meet such requirements.
SIt~vIMA.RY OF THE INVENTION
In view of the aforesaid disadvantages, the primary object of the invention is to provide an intelligent line switch that achieves control z function in a simple and easy way to overcome the troubles and inconveniences of conventional line switches that involve the operations of approaching, grasping, depressing and leaving. According to the invention, the shell of the Line switch houses an approaching or touch sensor to enable the line switch to equip approaching or touch control capability. When an user's hand approaches or touches the Line switch, the sensor detects the approaching or touching hand, and can control or adjust ON or OFF of the electric device.
In one aspect of the invention, the line switch of the invention includes a manual/automatic mode switch to integrate the conventional button switch function so that the line switch may be selectively operated in the conventional button switch mode or the induction mode to control the electric device. The line switch thus constructed includes dual control functions.
In another aspect, the shell of the line switch may be made from metal or conductive plastics or other conductive materials with an inductive circuit connecting to the shell so that the shell also has induction capability. When human body approaches or touches the shell, the electric device may also be controlled.
In yet another aspect, a mufti-stage control and adjustment of the electric device may be achieved by the distance of approaching hand or frequency or the elapsed time of the hand in contact with the touch sensor.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a conventional line switch.
FIG. 2 is a schematic circuit diagram of a conventional line switch.
FIG. 3 is a schematic view of a conventional line switch in an operating condition.
FIG. 4 is a schematic view of a conventional line switch in another IO operating condition.
FIG. S is a schematic view of a conventional line switch in yet another operating condition.
FIG. 6 is a schematic view of a conventional line switch in still another operating condition.
15 FIG. 7 is a perspective view of the invention.
FIG. 8 is a schematic circuit diagram of the line switch of the invention.
FIG. 9 is a perspective view of a second embodiment the invention.
FIG. IO is a schematic circuit diagram of the second embodiment the invention.
FIG. 11 is a perspective view of a third embodiment the invention.
FIG. 12 is a schematic circuit diagram of the third embodiment the invention.
FIG. 13 is a block diagram of a control device of the invention.
S FIG. 14 is a block diagram of another embodiment of the control device of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 7 and 8, the line switch 3 of the invention includes a control device 6 located in a shell. The control device 6 has an inductive circuit. The inductive circuit has a sensor 31 sensible to approaching or touching of human body. The power cord 4 has one end connecting to the control device 6, then through the control device 6 connects to a load 5.
When a user's hand approaches or touches the sensor 31 of the line switch 3, the sensor 31 transmits the detected signal to the control device 6 which controls ON or OFF of the electric device. Thus user does not need to take the complicated operation steps of approaching, grasping, depressing and leaving that occur to the conventional button Iine switch. Merely through the movement or posture of an approaching hand, the electric device may be controlled. Thus operation of the line switch 3 is much simpler and easier.
It takes many steps to operate and control the line switch 1. The operation procedures of hand grasping and finger depressing are primitive and cumbersome. They cannot achieve the control function instantly. In the event that the line switch 1 is suspended in the air, it tends to swing and is difficult to grasp. Moreover, some conventional line switch 1, besides offering the function of switching ON or OFF of the electric device, also can adjust light brightness or intensity of the electric device. The operation procedures of the button switch cannot fully meet such requirements.
SIt~vIMA.RY OF THE INVENTION
In view of the aforesaid disadvantages, the primary object of the invention is to provide an intelligent line switch that achieves control z function in a simple and easy way to overcome the troubles and inconveniences of conventional line switches that involve the operations of approaching, grasping, depressing and leaving. According to the invention, the shell of the Line switch houses an approaching or touch sensor to enable the line switch to equip approaching or touch control capability. When an user's hand approaches or touches the Line switch, the sensor detects the approaching or touching hand, and can control or adjust ON or OFF of the electric device.
In one aspect of the invention, the line switch of the invention includes a manual/automatic mode switch to integrate the conventional button switch function so that the line switch may be selectively operated in the conventional button switch mode or the induction mode to control the electric device. The line switch thus constructed includes dual control functions.
In another aspect, the shell of the line switch may be made from metal or conductive plastics or other conductive materials with an inductive circuit connecting to the shell so that the shell also has induction capability. When human body approaches or touches the shell, the electric device may also be controlled.
In yet another aspect, a mufti-stage control and adjustment of the electric device may be achieved by the distance of approaching hand or frequency or the elapsed time of the hand in contact with the touch sensor.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a conventional line switch.
FIG. 2 is a schematic circuit diagram of a conventional line switch.
FIG. 3 is a schematic view of a conventional line switch in an operating condition.
FIG. 4 is a schematic view of a conventional line switch in another IO operating condition.
FIG. S is a schematic view of a conventional line switch in yet another operating condition.
FIG. 6 is a schematic view of a conventional line switch in still another operating condition.
15 FIG. 7 is a perspective view of the invention.
FIG. 8 is a schematic circuit diagram of the line switch of the invention.
FIG. 9 is a perspective view of a second embodiment the invention.
FIG. IO is a schematic circuit diagram of the second embodiment the invention.
FIG. 11 is a perspective view of a third embodiment the invention.
FIG. 12 is a schematic circuit diagram of the third embodiment the invention.
FIG. 13 is a block diagram of a control device of the invention.
S FIG. 14 is a block diagram of another embodiment of the control device of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 7 and 8, the line switch 3 of the invention includes a control device 6 located in a shell. The control device 6 has an inductive circuit. The inductive circuit has a sensor 31 sensible to approaching or touching of human body. The power cord 4 has one end connecting to the control device 6, then through the control device 6 connects to a load 5.
When a user's hand approaches or touches the sensor 31 of the line switch 3, the sensor 31 transmits the detected signal to the control device 6 which controls ON or OFF of the electric device. Thus user does not need to take the complicated operation steps of approaching, grasping, depressing and leaving that occur to the conventional button Iine switch. Merely through the movement or posture of an approaching hand, the electric device may be controlled. Thus operation of the line switch 3 is much simpler and easier.
Referring to FIGS. 9 and 10 for another embodiment of the invention, the shell of the line switch 3 also includes a control device 6 which has a sensor 31 sensible to approaching or touching of human body. In addition, the line switch 3 includes a selection switch 32. The power cord 4 has one S end connecting to the selection switch 32. The selection switch 32 has a contact B (for automatic control mode) connecting to the control device 6 and another contact A (for manual control mode) connecting to the contact of the original button switch 33 of the line switch 3. The original button switch 33 has another contact connecting to an output control end of the control device 6 and the load 5. Hence when the selection switch 32 is switched to the contact B, the line switch 3 is in the induction control mode. When the selection switch 32 is switched to the contact A, it is in the manual control mode and the original button switch 33 may be used to control ON or OFF of the load 5. By means of such a structure, the line switch 3 can integrate and concurrently equip manual and automatic control methods.
Referring to FIGS. 11 and 12 for yet another embodiment of the invention for the line switch 3 to integrate the conventional line switch 1 that equips with a button switch 11 and the induction control function. The line switch 3 of the invention includes a sensor 31 and a selection switch 32. The contact A of the selection switch 32 and the output control end of the control device 6 connect to two contacts of the switch of the line switch 1. Thus the conventional line switch 1 has inductive line switch 3 simultaneously.
Therefore the original conventional line switch 1 also has inductive control functi on.
Referring to FIG. 13 for the control method of the control device 6. It mainly includes a control unit 61 and a sensor unit 62. The control unit 61 mainly consists of a power supply circuit, a control circuit and a gate switch circuit. 'The sensor unit 62 includes an induction circuit and a sensor 31. To equip the manual and automatic control modes concurrently on the line switch, two ends of the gate switch circuit are connected to a selection switch 32 and a button switch 33. Or as shown in FIG. 14, the inductive line switch of the invention originally has a sensor 31 to detect the approaching or touching of human body. The sensor 31 may be removed, and with the induction circuit directly connecting to the shell of the line switch 3 that is made from metal, or conductive plastics, or other conductive materials so that 1 S the shell becomes an inductive element with inductive capability. Thus when human body approaches the shell, the electric device may be inducted to accomplish the control object.
Furthermore, the control device 6 of the invention may also include a radio control device to enable the line switch 3 to control a remote load in a remote fashion. In addition, through hand approaching or touching frequency or elapsed time of touching on the sensor 31, a multiple-stage control or adjustment may be made for the electric device.
In summary, the invention overcomes the troubles of approaching, grasping, depressing and leaving operations occurred to conventional line switches, and controls electric devices by simply approaching the line switch S in a short distance or touching the line switch. The operation and control is much simpler and easier.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
s
Referring to FIGS. 11 and 12 for yet another embodiment of the invention for the line switch 3 to integrate the conventional line switch 1 that equips with a button switch 11 and the induction control function. The line switch 3 of the invention includes a sensor 31 and a selection switch 32. The contact A of the selection switch 32 and the output control end of the control device 6 connect to two contacts of the switch of the line switch 1. Thus the conventional line switch 1 has inductive line switch 3 simultaneously.
Therefore the original conventional line switch 1 also has inductive control functi on.
Referring to FIG. 13 for the control method of the control device 6. It mainly includes a control unit 61 and a sensor unit 62. The control unit 61 mainly consists of a power supply circuit, a control circuit and a gate switch circuit. 'The sensor unit 62 includes an induction circuit and a sensor 31. To equip the manual and automatic control modes concurrently on the line switch, two ends of the gate switch circuit are connected to a selection switch 32 and a button switch 33. Or as shown in FIG. 14, the inductive line switch of the invention originally has a sensor 31 to detect the approaching or touching of human body. The sensor 31 may be removed, and with the induction circuit directly connecting to the shell of the line switch 3 that is made from metal, or conductive plastics, or other conductive materials so that 1 S the shell becomes an inductive element with inductive capability. Thus when human body approaches the shell, the electric device may be inducted to accomplish the control object.
Furthermore, the control device 6 of the invention may also include a radio control device to enable the line switch 3 to control a remote load in a remote fashion. In addition, through hand approaching or touching frequency or elapsed time of touching on the sensor 31, a multiple-stage control or adjustment may be made for the electric device.
In summary, the invention overcomes the troubles of approaching, grasping, depressing and leaving operations occurred to conventional line switches, and controls electric devices by simply approaching the line switch S in a short distance or touching the line switch. The operation and control is much simpler and easier.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
s
Claims (3)
1. An intelligent line switch comprising a shell and a control device housed in the shell, the control device including an inductive circuit which has a sensor sensible to approaching or touching of an object, the control device being connected to one end of a power cord which further connects to a load through the control device;
wherein the control device controls ON or OFF of the load through a single motion when an operator's hand approaches or touches the sensor.
wherein the control device controls ON or OFF of the load through a single motion when an operator's hand approaches or touches the sensor.
2. The intelligent line switch of claim 1, wherein the power cord connects to a common contact of a selection switch for an automatic and a manual control modes before connecting to the control device, the automatic control mode having a first contact connecting to the control device, the manual control mode having a second contact connecting to a third contact located on one end of a button switch, the button switch having a fourth contact connecting concurrently to an output control end of the control device and the load.
3. The intelligent line switch of claim 1, wherein the shelf is made from metal or selected conductive materials, the inductive circuit of the control device being connected to the shell so that the shell has induction 20 capability to substitute the sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031054684A CN1523760A (en) | 2003-02-21 | 2003-02-21 | Intelligent on-line switch |
| CN03105468 | 2003-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2457929A1 true CA2457929A1 (en) | 2004-08-21 |
Family
ID=32001280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002457929A Abandoned CA2457929A1 (en) | 2003-02-21 | 2004-02-11 | Intelligent line switch |
Country Status (9)
| Country | Link |
|---|---|
| KR (2) | KR100619569B1 (en) |
| CN (1) | CN1523760A (en) |
| BR (1) | BRPI0400574A (en) |
| CA (1) | CA2457929A1 (en) |
| DE (1) | DE102004008488A1 (en) |
| FR (1) | FR2851701A1 (en) |
| GB (1) | GB2399682B (en) |
| IT (1) | ITMI20040268A1 (en) |
| MX (1) | MXPA04001561A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004044378A1 (en) * | 2004-09-10 | 2006-03-30 | Valeo Schalter Und Sensoren Gmbh | switch unit |
| DE102005017250A1 (en) * | 2005-04-14 | 2006-06-14 | Daimlerchrysler Ag | Vehicle door is opened and closed by door drive and is regulated at defined distance from defined guiding object during opening and closing process |
| JP5027479B2 (en) | 2006-10-26 | 2012-09-19 | パナソニック株式会社 | Automatic switch with hot wire sensor |
| DE102008047475A1 (en) * | 2008-09-17 | 2010-04-15 | Bayerische Motoren Werke Aktiengesellschaft | Door i.e. driver-side door, unlocking device for motor vehicle i.e. passenger car, has door inner handle swung out from inner door cladding and manually operatable for door unlocking in operating position |
| CN203152867U (en) * | 2013-03-21 | 2013-08-28 | 朱国荣 | Capacitance type inductive switch nail art lamp |
| CN104168009B (en) * | 2013-05-17 | 2018-03-23 | 光宝电子(广州)有限公司 | Light emitting-type touch switch device and light emitting-type touch switch module |
| CN104811176A (en) * | 2014-01-27 | 2015-07-29 | 茂旭安防工程设备(上海)有限公司 | Switch circuit |
| DK3228254T3 (en) | 2014-02-21 | 2020-03-23 | 3Dintegrated Aps | KEEP INCLUDING A SURGICAL INSTRUMENT |
| US11020144B2 (en) | 2015-07-21 | 2021-06-01 | 3Dintegrated Aps | Minimally invasive surgery system |
| JP6776327B2 (en) | 2015-07-21 | 2020-10-28 | スリーディインテグレイテッド アーペーエス３Ｄｉｎｔｅｇｒａｔｅｄ Ａｐｓ | Cannula Assembly Kit, Needle Assembly Kit, Sleeve Assembly, Minimally Invasive Surgical System and Methods |
| DK178899B1 (en) | 2015-10-09 | 2017-05-08 | 3Dintegrated Aps | A depiction system |
| CN114136256B (en) * | 2021-11-30 | 2023-08-11 | 江苏旭美特环保科技有限公司 | Bury formula travel sensor structure of unmanned machine of sweeping floor of intelligence |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB440907A (en) * | 1934-10-10 | 1936-01-08 | Greenly Henry | Improvements in or relating to electric contact making relays |
| US2235104A (en) * | 1937-04-30 | 1941-03-18 | Greenly Engineering Models Ltd | Inductor type electric relay |
| GB473589A (en) * | 1937-04-30 | 1937-10-15 | Henry Greenly | Improvements in or relating to electric contact making relays |
| US3065318A (en) * | 1961-04-24 | 1962-11-20 | Otis Elevator Co | Magnetic inductor switch |
| US4380721A (en) * | 1980-12-29 | 1983-04-19 | Bullock John W | Proximity switch |
| GB2256772A (en) * | 1991-05-28 | 1992-12-16 | So Hing Chung | Telephone with proximity switch |
-
2003
- 2003-02-21 CN CNA031054684A patent/CN1523760A/en active Pending
-
2004
- 2004-02-10 GB GB0402851A patent/GB2399682B/en not_active Expired - Fee Related
- 2004-02-11 CA CA002457929A patent/CA2457929A1/en not_active Abandoned
- 2004-02-18 IT IT000268A patent/ITMI20040268A1/en unknown
- 2004-02-19 MX MXPA04001561A patent/MXPA04001561A/en not_active Application Discontinuation
- 2004-02-20 FR FR0450326A patent/FR2851701A1/en not_active Withdrawn
- 2004-02-20 KR KR1020040011348A patent/KR100619569B1/en not_active IP Right Cessation
- 2004-02-20 KR KR20-2004-0004480U patent/KR200351295Y1/en not_active IP Right Cessation
- 2004-02-20 BR BR0400574-0A patent/BRPI0400574A/en not_active IP Right Cessation
- 2004-02-20 DE DE102004008488A patent/DE102004008488A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040075770A (en) | 2004-08-30 |
| BRPI0400574A (en) | 2004-11-03 |
| KR100619569B1 (en) | 2006-09-01 |
| FR2851701A1 (en) | 2004-08-27 |
| KR200351295Y1 (en) | 2004-06-01 |
| DE102004008488A1 (en) | 2004-09-09 |
| GB0402851D0 (en) | 2004-03-17 |
| ITMI20040268A1 (en) | 2004-05-18 |
| MXPA04001561A (en) | 2004-08-26 |
| CN1523760A (en) | 2004-08-25 |
| GB2399682B (en) | 2005-02-02 |
| GB2399682A (en) | 2004-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |