CA2436132A1 - Air driven low speed dental handpiece motors - Google Patents

Air driven low speed dental handpiece motors Download PDF

Info

Publication number
CA2436132A1
CA2436132A1 CA002436132A CA2436132A CA2436132A1 CA 2436132 A1 CA2436132 A1 CA 2436132A1 CA 002436132 A CA002436132 A CA 002436132A CA 2436132 A CA2436132 A CA 2436132A CA 2436132 A1 CA2436132 A1 CA 2436132A1
Authority
CA
Canada
Prior art keywords
slot
air
drive shaft
motor
opening
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.)
Granted
Application number
CA002436132A
Other languages
French (fr)
Other versions
CA2436132C (en
Inventor
Tod H. Brenner
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.)
Den Tal Ez Inc
Original Assignee
Individual
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
Priority claimed from US08/724,137 external-priority patent/US5795167A/en
Application filed by Individual filed Critical Individual
Publication of CA2436132A1 publication Critical patent/CA2436132A1/en
Application granted granted Critical
Publication of CA2436132C publication Critical patent/CA2436132C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Air driven dental handpiece motors include a tubular housing and a rotor rotatably supported within the housing. One motor is geared down by the provision of a plurality of idler gears rotatably supported on a hub which rotates between a sun gear on the output end of the rotor and a ring gear fixed within the housing. A drive shaft connects an exposed drive gear with the hub. A bearing is provided between the drive shaft and the inner bore of skirt extending from the ring gear to reduce a number of tolerances built up between the drive shaft and the bearing.
The motor further includes a valve member rotatable through about 140° of arc to vary maximum motor speed and motor rotation direction. The valve member abuts a valve plate having a circular air inlet opening and a semicircular air outlet or exhaust opening. The valve member has an air supply opening which is an elongated arcuate slot having radiused circumferential ends. Shallow, curvilinear recesses are provided in line with circumferential outer and inner walls of the central slot at each circumferential end of the slot and provide fine, low speed adjustment capability to the valve. Deeper recesses at the center of the slot provide an effective air supply orifice diameter at least as great as the effective orifice diameter of the valve plate inlet air opening to maximize top motor speed.
CA002436132A 1996-09-30 1997-09-09 Air driven low speed dental handpiece motors Expired - Lifetime CA2436132C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/724,137 US5795167A (en) 1996-09-30 1996-09-30 Air driven low speed dental handpiece motors
US08/724,137 1996-09-30
CA002214876A CA2214876C (en) 1996-09-30 1997-09-09 Air driven low speed dental handpiece motors

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002214876A Division CA2214876C (en) 1996-09-30 1997-09-09 Air driven low speed dental handpiece motors

Publications (2)

Publication Number Publication Date
CA2436132A1 true CA2436132A1 (en) 1998-03-30
CA2436132C CA2436132C (en) 2005-07-12

Family

ID=28455366

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002436132A Expired - Lifetime CA2436132C (en) 1996-09-30 1997-09-09 Air driven low speed dental handpiece motors

Country Status (1)

Country Link
CA (1) CA2436132C (en)

Also Published As

Publication number Publication date
CA2436132C (en) 2005-07-12

Similar Documents

Publication Publication Date Title
CA2214876A1 (en) Air driven low speed dental handpiece motors
CA2219062A1 (en) Infinitely variable ring gear pump
CA2457032A1 (en) Lubrication of a pitch angle adjusting device of a rotor blade of a windmill
CA2178520A1 (en) Low flow-rate pump
EP0386429A3 (en) Low speed brushless electric motor
EP0933534A3 (en) Axial flow fan
RU94009834A (en) GAS-INFLATABLE TURBINE WITH RADIAL FLOW PASSAGE
US5701633A (en) Vacuum cleaning device with a suction nozzle
MY115442A (en) Motor with gear reducer
CA2179468A1 (en) Rotary internal combustion engine and rotary internal combustion engine cycle
CA2031846A1 (en) Turbine and turbocharger using the same
JPS60192838A (en) Accessory drive mechanism of turbine engine
EP0247505B1 (en) Air-driven contact filter
CA2136430A1 (en) Rotary engine
CA2436132A1 (en) Air driven low speed dental handpiece motors
EP1176311A3 (en) Pump apparatus
EP1419921A3 (en) Hybrid transmission
US5188065A (en) Water pump
US5040957A (en) Co-rotor engine with valve system
US4809507A (en) Rotary fluid device
US4103568A (en) Modular kinematic chain for transmitting a torque with slip
JPS6267286A (en) Motor-driven vane pump
CN2310183Y (en) Teeth type end face exhausting blower
CN214465048U (en) Inlet flow adjusting device of air blower
KR200300422Y1 (en) A electric power operator of rolling door

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20170911