Patent US5013954A successfully refreshed from Google Patents.
US5013954A
Expired / Lapsed
US
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Electrostatic micro-motor apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1990-06-11
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Granted: 1991-05-07
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Expires: 2010-06-11
Abstract
Abstract An electrostatic micro-motor apparatus capable of transmitting a driving force of an electrostatic micro-motor comprises a rotor which has the shape of a gear substantially. A plurality of electrodes are disposed at a predetermined circumferential region around the rotor so as to confront the teeth of the rotor, and such that a circumferential gap is defined at the remaining circumferential region around the rotor. A transmission gear is provided in the circumferential gap so as to be brought into engagement with the rotor.
Inventors
- 👤 Narito Shibaike
- 👤 Shinji Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/116; H02N; H02N1/00; H02N1/002; H02N1/004; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19679; Y10T74/19684
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
An electrostatic micro-motor apparatus capable of transmitting driving force of an electrostatic micro-motor, comprising: a rotor having a plurality of gear teeth; a first circumferential region around said rotor and a second circumferential region around said rotor defined by said first circumferential region, wherein said first circumferential region comprises a plurality of electrodes disposed opposite said gear teeth of said rotor and said second circumferential region comprises a circumferential gap; and a transmission gear in said circumferential gap for engagement with said rotor.
Claim 2
Dependent Claim
83 words
An electrostatic micro-motor apparatus capable of transmitting driving force of an electrostatic micro-motor, comprising: a rotor having a plurality of gear teeth; a first circumferential region around said rotor and a second circumferential region around said rotor defined by said first circumferential region, wherein said first circumferential region comprises a plurality of electrodes disposed opposite said gear teeth of said rotor and said second circumferential region comprises a circumferential gap; and a transmission gear in said circumferential gap for engagement with said rotor.
Claim 3
Dependent Claim
56 words
An electrostatic micro-motor apparatus as claimed in claim 1, wherein said electrodes are arranged at an interval of a first central angle and said teeth of said rotor are arranged at an interval of a second central angle such that said second central angle is a product of said first central angle by a natural number.
Claim 4
Dependent Claim
31 words
An electrostatic micro-motor apparatus as claimed in claim 1, wherein said second circumferential region comprises a plurality of circumferential gaps disposed symmetrically with respect to a rotational axis of said rotor.
Claim 5
Dependent Claim
31 words
An electrostatic micro-motor apparatus as claimed in claim 3, wherein a transmission gear is provided in each said circumferential gap, disposed symmetrically with respect to said rotational axis of said rotor.
Claim 6
Dependent Claim
29 words
An electrostatic micro-motor apparatus as claimed in claim 3, wherein the number of teeth of said transmission gear is less than the number of said teeth of said rotor.
Claim 7
Dependent Claim
29 words
An electrostatic micro-motor apparatus as claimed in claim 1, wherein the number of teeth of said transmission gear is less than the number of said teeth of said rotor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |