US3557633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal gear
Assignee: Olympia Werke AG
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Filing: 1969-03-07
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Granted: 1971-01-26
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Expires: 1989-03-07
Abstract
Abstract AN INTERNAL GEAR WHEREIN A RIM WHICH IS CONNECTED WITH A SHAFT SURROUNDS A SPLIT ANNULAR FLEXIBLE TOOTHED BELT WHICH IS BONDED TO OR IN MERE FRICTIONAL ENGAGEMENT WITH THE INTERNAL SURFACE OF THE RIM. IN THE LATTER INSTANCE, THE INTERNAL GEAR CONSTITUTES A FRICTION COUPLING WHICH CEASES TO TRANSMIT TORQUE WHEN THE BELT OR THE RIM OFFERS EXCESSIVE RESISTANCE TO ROTATION.
Inventors
- 👤 Peter Frerichs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:45
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/12; F16H55/17; F16H2055/176; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49471; Y10T74/00; Y10T74/19; Y10T74/19633; Y10T74/1987; Y10T74/19893; Y10T74/19921; Y10T74/19926
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |