US3135093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power transmission
Assignee: Individual
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Filing: 1961-10-16
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Granted: 1964-06-02
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Iii Marcus I Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:42
CPC Classifications
F; F16; F16H; F16H39/00; F16H39/04; F16H39/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A VARIABLE SPEED HYDRAULIC TRANSMISSION COMPRISING: A FRAME; TWO SPACED SHAFTS; MEANS CARRIED BY THE FRAME MOUNTING THE SHAFTS FOR ROTATION ABOUT THEIR RESPECTIVE AXES WHICH ARE PARALLEL AND FIXED IN POSITION RELATIVE TO EACH OTHER; A ROTOR RIGIDLY SECURED ON EACH SHAFT AND ROTATING WITH THE ASSOCIATED SHAFT; A PLURALITY OF RADIALLY MOVABLE VANES SLIDABLY MOUNTED IN EACH ROTOR; A UNITARY RING BODY COMPRISING AN INTEGRAL PAIR OF RINGS, EACH RING DEFINING A CHAMBER CONTAINING ONE OF SAID ROTORS; MEANS CLOSING THE CHAMBERS AT THE SIDES OF THE RING BODY;
Claim 2
Dependent Claim
91 words
A VARIABLE SPEED HYDRAULIC TRANSMISSION COMPRISING: A FRAME; TWO SPACED SHAFTS; MEANS CARRIED BY THE FRAME MOUNTING THE SHAFTS FOR ROTATION ABOUT THEIR RESPECTIVE AXES WHICH ARE PARALLEL AND FIXED IN POSITION RELATIVE TO EACH OTHER; A ROTOR RIGIDLY SECURED ON EACH SHAFT AND ROTATING WITH THE ASSOCIATED SHAFT; A PLURALITY OF RADIALLY MOVABLE VANES SLIDABLY MOUNTED IN EACH ROTOR; A UNITARY RING BODY COMPRISING AN INTEGRAL PAIR OF RINGS, EACH RING DEFINING A CHAMBER CONTAINING ONE OF SAID ROTORS; MEANS CLOSING THE CHAMBERS AT THE SIDES OF THE RING BODY;
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |