Patent US3185273A successfully refreshed from Google Patents.
US3185273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic coupling with lock-up clutch
Assignee: Borg Warner Corp
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Filing: 1963-01-17
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Granted: 1965-05-25
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Richard L Smirl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:49
CPC Classifications
F; F16; F16H; F16H45/00; F16H45/02; F16H2045/0273; F16H2045/0278
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A HYDRAULIC CIRCUIT FOR CHARGING A TORQUE CONVERTOR AND OPERATING A BY-PASS CLUTCH OF A CONVERTOR ASSEMBLY HAVING A HOUSING; AN AXIALLY MOVABLE PRESSURE PLATE DIVIDING THE INTERIOR OF SAID HOUSING INTO A CLUTCH CHAMBER AND A CONVERTOR CHAMBER COMPRISING; A SOURCE OF FLUID UNDER PRESSURE, A VALVE FOR SELECTIVELY DIVERTING SAID FLUID INTO SAID CLUTCH CHAMBER OR INTO SAID CONVERTOR CHAMBER, RESTRICTED ORIFICE MEANS IN SAID BEARING HOUSING AFFORDING COMMUNICATION BETWEEN SAID CLUTCH CHAMBER AND SAID CONVERTOR CHAMBER, VALVE MEANS FOR PREVENTING FLUID COMMUNICATION BETWEEN SAID CONVERTOR CHAMBER AND SAID CLUTCH CHAMBER WHEN SAID CONVERTOR CHAMBER IS PRESSURIZED.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |