Patent US2191679A successfully refreshed from Google Patents.
Patent US3265169A successfully refreshed from Google Patents.
US3265169A
Expired / Lapsed
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Method of operating a combined fluid coupling and friction clutch
Assignee: Twin Disc Inc
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Filing: 1964-07-27
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Granted: 1966-08-09
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Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 George R Aschauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:58
CPC Classifications
F; F16; F16D; F16D47/00; F16D47/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF PROVIDING AN ACCELERATING AND DRIVING TORQUE FROM AN ENGINE TO A LOAD COMPRISING THE STEPS OF CONNECTING A FLUID COUPLING AND A FRICTION CLUTCH FOR OPERATION IN PARALLEL BETWEEN SAID ENGINE AND LOAD, OPERATING THE FLUID COUPLING FROM SUBSTANTIALLY THE POINT OF STALL OF THE COUPLING AT FULL ENGINE SPEED AND HORSEPOWER TO BEGING DRIVING THE LOAD, THEN OPERATING THE FRICTION CLUTCH TO DRIVE THE LOAD SIMULTANEOUSLY WITH THE COUPLING, AND PERMITTING BOTH THE COUPLING AND CLUTCH TO SLIP IN DRIVING THE LOAD AND SHARING THE HEAT GENERATED DURING SUCH ACCELERATION.
Claim 2
Independent Claim
94 words
A METHOD OF PROVIDING AN ACCELERATING AND DRIVING TORQUE FROM AN ENGINE TO A LOAD COMPRISING THE STEPS OF CONNECTING A FLUID COUPLING AND A FRICTION CLUTCH FOR OPERATION IN PARALLEL BETWEEN SAID ENGINE AND LOAD, OPERATING THE FLUID COUPLING FROM SUBSTANTIALLY THE POINT OF STALL OF THE COUPLING AT FULL ENGINE SPEED AND HORSEPOWER TO BEGING DRIVING THE LOAD, THEN OPERATING THE FRICTION CLUTCH TO DRIVE THE LOAD SIMULTANEOUSLY WITH THE COUPLING, AND PERMITTING BOTH THE COUPLING AND CLUTCH TO SLIP IN DRIVING THE LOAD AND SHARING THE HEAT GENERATED DURING SUCH ACCELERATION.
References Cited (Backward Citations)
US3189144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |