US3206931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic transmission systems
Assignee: Individual
•
Filing: 1964-05-12
•
Granted: 1965-09-21
•
Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Wilson Ronald Holdsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:42
CPC Classifications
F; F03; F03C; F03C1/00; F03C1/02; F03C1/04; F03C1/0403; F03C1/0428; F03C1/0447; F03C1/045; F03C1/053; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/44; F16H61/444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A HYDRAULIC MOTOR, FOR USE IN A CLOSED HYDRAULIC TRANSMISSION SYSTEM OF THE TYPE DESCRIBED, COMPRISING TWO SETS OF FIXED CYLINDERS, ONE SET OF LARGER AND THE OTHER SET OF SMALLER CAPACITY, EACH OF SAID CYLINDERS ACCOMMODATING A PISTON ARRANGED TO DRIVE A TWO-LOBE CAM MOUNTED ON A COMMON ROTARY OUTPUT SHAFT WHICH EXTENDS AT RIGHT ANGLES TO THE CYLINDER AXES, A DISTRIBUTOR VALVE CONNECTING SAID CYLINDERS IN TURN TO PRESSURE AND EXHAUST, AND VALVE MECHANISM WHEREBY EITHER OR BOTH SETS OF CYLINDERS CAN BE PLACED IN OPERATION.
Claim 2
Dependent Claim
88 words
A HYDRAULIC MOTOR, FOR USE IN A CLOSED HYDRAULIC TRANSMISSION SYSTEM OF THE TYPE DESCRIBED, COMPRISING TWO SETS OF FIXED CYLINDERS, ONE SET OF LARGER AND THE OTHER SET OF SMALLER CAPACITY, EACH OF SAID CYLINDERS ACCOMMODATING A PISTON ARRANGED TO DRIVE A TWO-LOBE CAM MOUNTED ON A COMMON ROTARY OUTPUT SHAFT WHICH EXTENDS AT RIGHT ANGLES TO THE CYLINDER AXES, A DISTRIBUTOR VALVE CONNECTING SAID CYLINDERS IN TURN TO PRESSURE AND EXHAUST, AND VALVE MECHANISM WHEREBY EITHER OR BOTH SETS OF CYLINDERS CAN BE PLACED IN OPERATION.
References Cited (Backward Citations)
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Cited
US1906787A
Cited
US2163080A
Cited
US2697403A
Cited
US2979306A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |