Patent US3555926A successfully refreshed from Google Patents.
US3555926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscous torsional vibration damper
Assignee: Cummins Turbo Technologies Ltd
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Filing: 1968-07-17
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Granted: 1971-01-19
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Expires: 1988-07-17
Abstract
Abstract D R A W I N G THE PRESENT INVENTION PROVIDES A VISCOUS TORSIONAL VIBRATION DAMPER OF THE TYPE ADAPTED FOR MOUNTING, FOR EXAMPLE ON THE CRANK SHAFT OF AN INTERNAL COMBUSTION ENGINE. THE DAMPER COMPRISES AN ANNULAR HOUSING AND AN INERTIA MEMBER CONCENTRICALLY LOCATED WITHIN A CHAMBER IN THE HOUSING. THE HOUSING HAS INTERNAL AXIALLY SPACED TRANSVERSE CHAMBER FACES THAT HAVE SUBSTANTIALLY EQUAL AXIALLY PROJECTED AREAS THEREBY PREVENTING UNEVEN PRESSURE DISTRIBUTION BETWEEN THE FACES THAT COULD CAUSE DISTORTION OF THE HOUSING.
Inventors
- 👤 Geoffrey Moorhouse
- 👤 Derek Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:01
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/16; F16F15/167; F16F15/173; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2122
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |