CH621477A5 - - Google Patents

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Publication number
CH621477A5
CH621477A5 CH63478A CH63478A CH621477A5 CH 621477 A5 CH621477 A5 CH 621477A5 CH 63478 A CH63478 A CH 63478A CH 63478 A CH63478 A CH 63478A CH 621477 A5 CH621477 A5 CH 621477A5
Authority
CH
Switzerland
Prior art keywords
axial
blade element
air
bearing device
bearing
Prior art date
Application number
CH63478A
Other languages
German (de)
English (en)
Inventor
Kenzo Kataoka
Takahiko Nose
Original Assignee
Morita Mfg
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 Morita Mfg filed Critical Morita Mfg
Publication of CH621477A5 publication Critical patent/CH621477A5/de

Links

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
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
    • A61C1/181—Bearings or lubricating arrangements, e.g. air-cushion bearings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/063—Sliding contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • F16C39/066—Permanent magnets with opposing permanent magnets repelling each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2316/00—Apparatus in health or amusement
    • F16C2316/10—Apparatus in health or amusement in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances
    • F16C2316/13—Dental machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Dentistry (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)
CH63478A 1977-01-25 1978-01-20 CH621477A5 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52007449A JPS6028502B2 (ja) 1977-01-25 1977-01-25 歯科用空気軸受ハンドピ−スの軸受機構

Publications (1)

Publication Number Publication Date
CH621477A5 true CH621477A5 (ja) 1981-02-13

Family

ID=11666137

Family Applications (1)

Application Number Title Priority Date Filing Date
CH63478A CH621477A5 (ja) 1977-01-25 1978-01-20

Country Status (4)

Country Link
US (1) US4153993A (ja)
JP (1) JPS6028502B2 (ja)
CH (1) CH621477A5 (ja)
DE (1) DE2802712A1 (ja)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415395A (en) * 1977-07-06 1979-02-05 Yoshida Seisakusho Kk Turbine hand piece
US4320927A (en) * 1980-03-21 1982-03-23 Sertich Anthony T Dental drill with magnetic air turbine having magnetic bearings
US4486624A (en) * 1980-09-15 1984-12-04 Motorola, Inc. Microprocessor controlled radiotelephone transceiver
JPS5843421A (ja) * 1981-09-09 1983-03-14 Toshiba Corp 回転鏡光偏向器
JPS58120714U (ja) * 1982-02-09 1983-08-17 株式会社モリタ製作所 歯科用ハンドピ−ス
US4568642A (en) * 1984-12-24 1986-02-04 Advanced Dental Applications Corporation Quiet dental drill
SE453419B (sv) * 1985-02-04 1988-02-01 Skf Nova Ab Anordning med axiallager der lagringsytorna innefattar magnetiska partier
DE3660115D1 (en) * 1985-06-10 1988-05-05 Interatom Aerostatic bearing having a double conical configuration
US4726640A (en) * 1985-09-24 1988-02-23 Ricoh Company, Ltd. Optical deflector with a pneumatic and a magnetic bearing
US4820950A (en) * 1987-03-03 1989-04-11 Copal Company Limited Fluid Bearing
EP0374276B1 (en) * 1988-12-19 1995-04-19 Matsutani Seisakusho Co. Ltd., Dental burr and dental handpiece
US4966552A (en) * 1989-05-08 1990-10-30 Den-Tal-Ez, Inc. Sterilizable non-lubricated rotary instrument for dental and medical use
JPH09166143A (ja) * 1995-12-18 1997-06-24 Ntn Corp 静圧空気軸受スピンドル
US5800172A (en) * 1997-08-11 1998-09-01 Goldenberg; Boris Dental turbine hand piece with light and rotary head
GB9818097D0 (en) * 1998-08-19 1998-10-14 Corac Group Plc Improvements in and relating to bearing assemblies
US6791801B1 (en) * 2002-02-28 2004-09-14 Western Digital Technologies, Inc. Pivot bearing cartridge including ball bearing set and magnet element for ball bearing set pre-loading
CA2414908A1 (en) * 2002-12-20 2004-06-20 Derek Turner Dental handpiece
US8562343B2 (en) 2010-06-11 2013-10-22 Allan Magneson Fluid driven dental handpiece with hydrostatic bearings
AT512049B1 (de) 2012-01-30 2013-05-15 Steger Heinrich Bearbeitungsvorrichtung für ein zahntechnisches werkstück
US9347319B2 (en) * 2013-01-30 2016-05-24 Thunder Tiger Corporation Dental handpiece structure
EP2966295B1 (en) * 2013-03-05 2020-04-22 Yugen Kaisha Nakanoseisakusho Rotary drive device
JP6287323B2 (ja) * 2013-09-24 2018-03-07 日本精工株式会社 歯科エアタービン用軸受ユニット及び歯科エアタービン
CN104251262A (zh) * 2014-09-09 2014-12-31 骄阳山水（江苏）油气工程技术有限公司 用于涡轮钻具的磁悬浮轴承节
JP6276810B2 (ja) 2016-08-04 2018-02-07 Ntn株式会社 エアタービン駆動スピンドル
JP6756552B2 (ja) * 2016-09-08 2020-09-16 Ntn株式会社 エアタービン駆動スピンドル

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175293A (en) * 1958-10-10 1965-03-30 John V Borden Dental handpiece
GB1018684A (en) * 1963-10-24 1966-02-02 Westwind Developments Ltd Improvements in or relating to air driven turbines
US3365425A (en) * 1965-04-12 1968-01-23 Du Pont Random linear copolyesters of asymmetrically substituted phthalic acids
US3380162A (en) * 1966-10-05 1968-04-30 Dentists Supply Co Air turbine motor with resiliently biased adjustable tapered bearings
FR1509938A (fr) * 1966-06-27 1968-01-19 Rateau Soc Perfectionnement aux butées axiales de machines tournantes et butée hydromagnétique

Also Published As

Publication number Publication date
JPS6028502B2 (ja) 1985-07-05
JPS5392595A (en) 1978-08-14
DE2802712A1 (de) 1978-07-27
US4153993A (en) 1979-05-15

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Legal Events

Date Code Title Description
PL Patent ceased