US3257808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid coupling fan drive
Assignee: Motors Liquidation Co
•
Filing: 1964-04-13
•
Granted: 1966-06-28
•
Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Dan B Kuiper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P7/042; F16; F16D; F16D35/00; F16D35/02; F16D35/021; F16D35/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A VARIABLE SPEED DRIVE MECHANISM INCLUDING A DRIVE SHAFT, A HOUSING SUPPORTED UPON SAID SHAFT FOR ROTATION AT VARIABLE SPEEDS OF ROTATION WITH RESPECT TO THE SPEED OF ROTATION IN SAID SHAFT, SAID HOUSING FORMING A CHAMBER AND INCLUDING SPACED WALL, A FIXED QUANTITY OF WORKING FLUID IN SAID CHAMBER, AN IMPELLER DRIVEN BY SAID DRIVE SHAFT AND DISPOSED IN SAID CHAMBER BETWEEN SAID SPACED WALLS AND IN SPACED RELATIONSHIP WITH RESPECT TO SAID HOUSING FOR CIRCULATING SAID WORKING FLUID, SPACED WINDOWS IN SAID IMPELLER FOR PERMITTING FLUID FLOW THROUGH SAID
Claim 2
Dependent Claim
91 words
A VARIABLE SPEED DRIVE MECHANISM INCLUDING A DRIVE SHAFT, A HOUSING SUPPORTED UPON SAID SHAFT FOR ROTATION AT VARIABLE SPEEDS OF ROTATION WITH RESPECT TO THE SPEED OF ROTATION IN SAID SHAFT, SAID HOUSING FORMING A CHAMBER AND INCLUDING SPACED WALL, A FIXED QUANTITY OF WORKING FLUID IN SAID CHAMBER, AN IMPELLER DRIVEN BY SAID DRIVE SHAFT AND DISPOSED IN SAID CHAMBER BETWEEN SAID SPACED WALLS AND IN SPACED RELATIONSHIP WITH RESPECT TO SAID HOUSING FOR CIRCULATING SAID WORKING FLUID, SPACED WINDOWS IN SAID IMPELLER FOR PERMITTING FLUID FLOW THROUGH SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |