US4152612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor with operation-indicating means
Assignee: Seikosha KK
•
Filing: 1977-02-09
•
Granted: 1979-05-01
•
Expires: 1997-02-09
Abstract
Abstract A small electric motor, for example for driving a clock comprises a capsule within which are provided a stator, a rotor and a deceleration gear train. One wheel in the deceleration gear train bears a pattern on its periphery for indicating the state of operation of the motor. The capsule is either transparent or is provided with a window for observing the wheel bearing such pattern.
Inventors
- 👤 Yukio Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:32
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/116; G; G04; G04C; G04C3/00; G04C3/16; H02K11/00; H02K11/20; H02K11/21; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19679; Y10T74/19684
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
An electric motor comprising a capsule, a stator fixed in said capsule, a rotor rotatably supported in said capsule and revolvably magnetically coupled to said stator, a speed-reducing gear train in said capsule and driven by said rotor, said reducing gear train including an operation-indicating wheel rotating at a lower speed than said rotor and having at its periphery visual indicating means comprising a pattern of alternating visually contrasting portions, said capsule having a transparent portion positioned for observing said indicating means therethrough to determine the state of operation of said motor, said speed-reducing gear train comprising a first pinion on said rotor, a transmission gear wheel driven by said first pinion, a second pinion on said transmission gear wheel meshing with a gear on said operation-indicating wheel, an output gear wheel and an adjacent stationary gear of like diameter both coaxial with said rotor, and an idle wheel rotatable on a stub shaft projecting from said operation-indicating wheel and meshing with both said output gear wheel and said stationary gear wheel.
Claim 2
Dependent Claim
172 words
An electric motor comprising a capsule, a stator fixed in said capsule, a rotor rotatably supported in said capsule and revolvably magnetically coupled to said stator, a speed-reducing gear train in said capsule and driven by said rotor, said reducing gear train including an operation-indicating wheel rotating at a lower speed than said rotor and having at its periphery visual indicating means comprising a pattern of alternating visually contrasting portions, said capsule having a transparent portion positioned for observing said indicating means therethrough to determine the state of operation of said motor, said speed-reducing gear train comprising a first pinion on said rotor, a transmission gear wheel driven by said first pinion, a second pinion on said transmission gear wheel meshing with a gear on said operation-indicating wheel, an output gear wheel and an adjacent stationary gear of like diameter both coaxial with said rotor, and an idle wheel rotatable on a stub shaft projecting from said operation-indicating wheel and meshing with both said output gear wheel and said stationary gear wheel.
References Cited (Backward Citations)
US2272242A
Cited
US2209362A
Cited
US2269035A
Cited
US3256453A
Cited
US3240965A
Cited
US3400285A
Cited
US3482126A
Cited
US3508350A
Cited
US3469131A
Cited
US3676725A
Cited
US3662198A
Cited
US3855490A
Cited
US3967147A
Cited
US3909646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |