US3815241A - Dental handpiece with built-in coolant duct - Google Patents

Dental handpiece with built-in coolant duct Download PDF

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Publication number
US3815241A
US3815241A US00306555A US30655572A US3815241A US 3815241 A US3815241 A US 3815241A US 00306555 A US00306555 A US 00306555A US 30655572 A US30655572 A US 30655572A US 3815241 A US3815241 A US 3815241A
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US
United States
Prior art keywords
insert
handpiece
head portion
tool
coolant
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.)
Expired - Lifetime
Application number
US00306555A
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English (en)
Inventor
B Lingenhohle
M Saupe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaltenbach and Voigt GmbH
Original Assignee
Kaltenbach and Voigt GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kaltenbach and Voigt GmbH filed Critical Kaltenbach and Voigt GmbH
Application granted granted Critical
Publication of US3815241A publication Critical patent/US3815241A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
    • A61C1/052—Ducts for supplying driving or cooling fluid, e.g. air, water

Definitions

  • ABSTRACT A dental handpiece comprising a portion having a built-in coolant conduit which communicates with a tubular insert which is mounted in the handpiece so as to spray coolant onto a tool fitted in the handpiece.
  • the insert is removably mounted in the handpiece, as for example, by screw threads so as to be removable for cleaning or replacement purposes.
  • the insert is provided with two ducts, one being oblique with respect to the axis of the insert.
  • the insert carries a sealing member therewith and the two are inserted and a removed as a unit from the handpiece.
  • the invention relates to a dental handpiece with at least one built-in coolant duct, which comprises, near the opening accommodating the tool, at least one tubular spray nozzle which opens into the atmosphere and is directed towards the tool.
  • An object of the invention' is to provide a dental handpiece in which the above-mentioned clogging effects can be eliminated in a simple manner.
  • the spray nozzle be constructed as a tubular insert which can be releasably, inserted from outside into the handpiece.
  • the construction of the spray nozzle as proposed according to the improvement of the invention can be used both with angle-shaped handpieces and straight handpieces.
  • the improvement is suitable with any coolant, such as water, a spray consisting of an air-water mixture or coolant air or coolant gas alone.
  • the spraying nozzle may comprise two or more nozzle ducts.
  • This arrangement of a plurality of nozzle ducts, as known per se, has the advantage in the present case that even several clogged nozzle ducts can easily be cleaned all at once by removing the tubular insert;
  • the axis of at least one nozzle duct extends obliquely to the axis of the tubular insert. This increases the possibility of the adjustment of several directions of spraying jets of the coolant issuing from the nozzle. Thus, it is particularly simple, by rotating the tubular insert. to adjust the spraying jet to the end region of relatively long or relatively short tools.
  • tubular insert For the easier removal and insertion of the tubular insert, it is proposed in accordance with another embodiment of the invention-to provide the tubular insert with key surfaces or the like which are accessible fromv outside when the insert is in the fittedposition.
  • the key surfaces can, for example, be constructed in the form of a screw slot, similar to a nut, or in the form of key insertion holes or the like.
  • the tubular insert prefferably screwed into the handpiece.
  • the tubular insert is providedwith an external thread and the corresponding receiving opening in the handpiece is provided with an internal thread.
  • the tubular insert is made of suitable material, e.g. a synthetic plastic material, it is possible, for example, to obtain the necessary sealing. between the tubular insert and handpiece simple by a tight screwing action.
  • the construction of the spraying nozzle in accordance with the invention also makes it possible for a packing ring to be arranged in suitable manner between the tubular insert and the receiving opening in the handpiece. It is particularly desirable if, in accordance with another proposal of the invention, for the tubular insert to be provided with an external annular groove, in. which apacking ring is arranged. In this case, upon the extraction of the tubular insert, the packing ring is automatically removed from the handpiece as a unit with said insert, so that the packingring can if necessary by simply replaced.
  • FIG. 1 is a side elevational view, partly in section, of
  • FIG. 2 shows only the spraying nozzle constructed as a tubular insert, in axial section and-on enlarged scalei and FIG. 3 shows the spraying nozzle according to FIG. 2 in elevation as viewed at the outlet end for the coolant.
  • Numeral l in the 'drawing represents the shank of a head 2 of a dental angle-piece.
  • the shank l is capable of being releasably connected in the usual manner to a dental handpiece.
  • the shank has a built-in coolant duct 3 which, on connection to the handpiece, is adapted to be connected to a coolant duct which is likewise built into the handpiece.
  • the coolant duct 3 of the shank 1 comprises, in the vicinity of the tool-receiving opening 4 of the head 2, a tubular spraying nozzle which opens into theiatmosphere and which is directed towards the tool 5.
  • the spraying nozzle is constructed as a tubular insert 6 which can be screwed from theoutside into thehandpiece or into the head 2. Hence, the insert 6 can be removed for purposes of cleaning the same of any accumulated dirt or the like, or for replacing the insert with a new one.
  • the screwthread of the tubular insert 6 which is necessary for this purpose is shown at 7a in FIG. 2.
  • the opening 12 of the head 2 for receiving the tubular insert has an internal thread 7b which corresponds to the external thread 70.
  • the spraying nozzle comprises two nozzle passages 8 which. as will be seen from FIG. 3, are arranged eccentrically of the axis A of the tubular insert 6. Of the nozzle passages 8, the lefthand nozzle passage in FIGS. 2 and 3 extends obliquely with respect to the axis A of the tubular insert 6.
  • the tubular insert 6 is provided with a key surface 9 which is accessible from the outside in the fitted position, said surface being in the form of a slot.
  • the tubular insert is provided with an external annular groove 10, in which a packing ring 11 is arranged. Hence, removal of the insert is accompanied by removal of ring 11 therewith.
  • the tubular insert 6 can also be so designed that it can be fitted so as to latch in the receiving opening 7b.
  • the tubular insert 6 it is possible, for example, to provide on the tubular insert 6 an external spring ring which snaps into a corresponding internal annular groove of the opening 7b.
  • the key surface of the tubular insert 6 can be constructed as a projection extending radially beyond the periphery of the tubular insert and arranged on the lower end of the tubular insert 6 in FIG. 2.
  • a dental handpiece comprising a head portion having at least one built-in coolant conduit and a toolreceiving opening, at least one tubular spraying nozzle mounted in said head portion, said nozzle opening into the atmosphere for directing coolant onto a tool mounted in the tool-receiving opening of said head portion, said spraying nozzle being constructed as a tubular insert which is releasably inserted into the head portion from outside at a location offset from said toolreceiving opening, sealing means carried by said insert for being inserted therewith into said head portion or removed therewith from said head portion, said insert having a main central passage which registers with said coolant conduit in the head portion when the insert is mounted in the handpiece, and two ducts extending from said central passage for conducting coolant to said tool, one of said ducts extending parallel to said passage the other obliquely of said passage.
  • tubular insert is provided with a slot which is accessible from outside in the inserted mounted position of said tubular insert to enable removal thereof.
  • tubular insert and the receiving opening of said head portion are threaded so that said insert is capable of being screwed into the handpiece.
  • a handpiece according to claim 1 wherein the tubular insert is provided with an external annular groove, said sealing means comprising a packing ring arranged in said groove.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US00306555A 1971-11-17 1972-11-14 Dental handpiece with built-in coolant duct Expired - Lifetime US3815241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7143369 1971-11-17

Publications (1)

Publication Number Publication Date
US3815241A true US3815241A (en) 1974-06-11

Family

ID=6625171

Family Applications (1)

Application Number Title Priority Date Filing Date
US00306555A Expired - Lifetime US3815241A (en) 1971-11-17 1972-11-14 Dental handpiece with built-in coolant duct

Country Status (9)

Country Link
US (1) US3815241A (pt)
JP (1) JPS4862292A (pt)
AT (1) AT353399B (pt)
BR (1) BR7208050D0 (pt)
CH (1) CH557673A (pt)
CS (1) CS186213B2 (pt)
FR (1) FR2161652A5 (pt)
GB (1) GB1409427A (pt)
IT (1) IT975378B (pt)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981001956A1 (en) * 1980-01-07 1981-07-23 American Hospital Supply Corp Fluid spray system for dental handpiece
US5158456A (en) * 1991-02-04 1992-10-27 Lilley Hal D Turbine air exhaust block
US5352118A (en) * 1991-12-19 1994-10-04 Siemens Aktiengesellschaft Dental instrument having a nozzle for cooling
US5797743A (en) * 1996-04-29 1998-08-25 Young Dental Manufacturing Company, Inc. Autoclavable dental handpiece with disposable high speed turbine
US6579093B2 (en) 2001-02-23 2003-06-17 Young Dental Manufacturing Company 1, Llc High speed turbine cartridge for use with a medical/dental handpiece
EP1656903A1 (de) * 2004-11-12 2006-05-17 Kaltenbach & Voigt GmbH Medizinisches, insbesondere dentalmedizinisches, längliches Handstück mit einer Haltevorrichtung für ein Werkzeug

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55151313U (pt) * 1979-04-16 1980-10-31
JPS5948608U (ja) * 1982-09-27 1984-03-31 長田電機工業株式会社 歯科用ハンドピ−ス
AT404093B (de) * 1995-06-12 1998-08-25 Buermoos Dentalwerk Zahnärztliches oder chirurgisches handstück mit einer sprayvorrichtung
DE10116418A1 (de) * 2001-04-02 2002-10-17 Sirona Dental Systems Gmbh Zahnärztliches Instrument mit einer Düsenanordnung
DE112016000682T5 (de) 2015-02-10 2017-11-02 Mitsubishi Electric Corporation Elektrische rotationsmaschine, fahrstuhl-hebevorrichtung und verfahren zum magnetisieren und entmagnetisieren eines permanentmagneten für eine elektrische rotationsmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2256729A (en) * 1937-10-18 1941-09-23 Thompson Mfg Company Multiple jet sprinkler
US2442033A (en) * 1945-07-28 1948-05-25 John E Brantly Fluid circulating dental drill and bit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2256729A (en) * 1937-10-18 1941-09-23 Thompson Mfg Company Multiple jet sprinkler
US2442033A (en) * 1945-07-28 1948-05-25 John E Brantly Fluid circulating dental drill and bit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981001956A1 (en) * 1980-01-07 1981-07-23 American Hospital Supply Corp Fluid spray system for dental handpiece
US4330279A (en) * 1980-01-07 1982-05-18 American Hospital Supply Corporation Fluid spray system for dental handpiece
US5158456A (en) * 1991-02-04 1992-10-27 Lilley Hal D Turbine air exhaust block
US5352118A (en) * 1991-12-19 1994-10-04 Siemens Aktiengesellschaft Dental instrument having a nozzle for cooling
US5797743A (en) * 1996-04-29 1998-08-25 Young Dental Manufacturing Company, Inc. Autoclavable dental handpiece with disposable high speed turbine
US6186784B1 (en) 1996-04-29 2001-02-13 Young Dental Manufacturing Company Autoclavable dental handpiece with disposable high speed turbine
US6579093B2 (en) 2001-02-23 2003-06-17 Young Dental Manufacturing Company 1, Llc High speed turbine cartridge for use with a medical/dental handpiece
EP1656903A1 (de) * 2004-11-12 2006-05-17 Kaltenbach & Voigt GmbH Medizinisches, insbesondere dentalmedizinisches, längliches Handstück mit einer Haltevorrichtung für ein Werkzeug

Also Published As

Publication number Publication date
IT975378B (it) 1974-07-20
CH557673A (de) 1975-01-15
FR2161652A5 (pt) 1973-07-06
JPS4862292A (pt) 1973-08-30
GB1409427A (en) 1975-10-08
ATA884272A (de) 1979-04-15
AT353399B (de) 1979-11-12
CS186213B2 (en) 1978-11-30
BR7208050D0 (pt) 1973-10-25

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