FR2409042A2 - Directly driven dental drill with external electric commutation - has hall effect digital switch in head adjacent to drive shaft - Google Patents

Directly driven dental drill with external electric commutation - has hall effect digital switch in head adjacent to drive shaft

Info

Publication number
FR2409042A2
FR2409042A2 FR7832754A FR7832754A FR2409042A2 FR 2409042 A2 FR2409042 A2 FR 2409042A2 FR 7832754 A FR7832754 A FR 7832754A FR 7832754 A FR7832754 A FR 7832754A FR 2409042 A2 FR2409042 A2 FR 2409042A2
Authority
FR
France
Prior art keywords
digital switch
hall effect
dental drill
drive shaft
external electric
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.)
Pending
Application number
FR7832754A
Other languages
French (fr)
Inventor
Gerd Fleischer
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.)
Medizin und Labortechnik Leipzig VEB
Original Assignee
Medizin und Labortechnik Leipzig VEB
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 Medizin und Labortechnik Leipzig VEB filed Critical Medizin und Labortechnik Leipzig VEB
Publication of FR2409042A2 publication Critical patent/FR2409042A2/en
Pending legal-status Critical Current

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
    • A61C1/02—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
    • A61C1/06—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 electric drive

Abstract

The dental drill with direct drive and external electrical commutation, as in the main patent, has a Hall effect digital switch (14) alongside the rotor which carries the dental tool. This is housed in a space (13) down the shaft where it supports the hand (1) this space widening out towards the head. This space is between the pole shoes. One connection (17) of the digital switch is with the positive connection which is also in common with the excitation windings (8, 9) of the stator magnets. The other two connections (16, 18) are connected to the pins at the end of the handle. The stack of stator laminations (6, 7) spreads outwards towards the head.
FR7832754A 1977-11-22 1978-11-21 Directly driven dental drill with external electric commutation - has hall effect digital switch in head adjacent to drive shaft Pending FR2409042A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD20219677A DD135444A1 (en) 1977-11-22 1977-11-22 DENTAL ANGLE HANDPIECE WITH DC MOTOR DIRECT DRIVE

Publications (1)

Publication Number Publication Date
FR2409042A2 true FR2409042A2 (en) 1979-06-15

Family

ID=5510545

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832754A Pending FR2409042A2 (en) 1977-11-22 1978-11-21 Directly driven dental drill with external electric commutation - has hall effect digital switch in head adjacent to drive shaft

Country Status (4)

Country Link
DD (1) DD135444A1 (en)
DE (1) DE2840623A1 (en)
FR (1) FR2409042A2 (en)
IN (1) IN150154B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514250A1 (en) * 1981-10-08 1983-04-15 Artus HANDPIECE WITH INTEGRATED MOTOR

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217478A (en) * 1987-02-18 1993-06-08 Linvatec Corporation Arthroscopic surgical instrument drive system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE161703C (en) *
FR1384591A (en) * 1963-04-18 1965-01-08 Kaltenbach & Voigt Handpiece, bent or not, for dentists, equipped with an electric micro-motor
FR2232146A1 (en) * 1973-05-29 1974-12-27 Singer Co
FR2236475A1 (en) * 1973-07-03 1975-02-07 Medizin Labortechnik Veb K Cranked directly controlled dentist's instrument - has drive rotor in grip moving in magnetic field

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE161703C (en) *
FR1384591A (en) * 1963-04-18 1965-01-08 Kaltenbach & Voigt Handpiece, bent or not, for dentists, equipped with an electric micro-motor
FR2232146A1 (en) * 1973-05-29 1974-12-27 Singer Co
FR2236475A1 (en) * 1973-07-03 1975-02-07 Medizin Labortechnik Veb K Cranked directly controlled dentist's instrument - has drive rotor in grip moving in magnetic field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514250A1 (en) * 1981-10-08 1983-04-15 Artus HANDPIECE WITH INTEGRATED MOTOR

Also Published As

Publication number Publication date
DD135444A1 (en) 1979-05-09
DE2840623A1 (en) 1979-05-23
IN150154B (en) 1982-07-31

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