US3177964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic drive
Assignee: Gar Wood Industries Inc
•
Filing: 1962-01-29
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Granted: 1965-04-13
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/472; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; B60K28/00; B60K28/10; B60K28/16; F16H61/44; F16H61/456; F16H61/47; F16H61/42; F16H61/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A HYDROSTATIC DRIVE SYSTEM INCLUDING A DRIVEN FLUID PUMP, A PLURALITY OF VARIABLE POSITIVE DISPLACEMENT FLUID MOTORS POWERED THEREBY, A PLURALITY OF MEANS INDIVIDUALLY DRIVEN BY SAID MOTORS, CONTROL MEANS FOR VARYING THE DISPLACEMENT OF AT LEAST ONE OF SAID MOTORS, SENSING MEANS IN OPERATIVE ASSOCIATION WITH SAID ONE OF SAID MOTORS FOR SENSING INDEPENDENTLY OF SPEED AND INLET PRESSURE THE ACTUAL LOAD THEREON AND MEANS RESPONSIVE TO SAID SENSING MEANS FOR AUTOMATICALLY MODIFYING THE ACTION OF SAID
Claim 2
Dependent Claim
78 words
A HYDROSTATIC DRIVE SYSTEM INCLUDING A DRIVEN FLUID PUMP, A PLURALITY OF VARIABLE POSITIVE DISPLACEMENT FLUID MOTORS POWERED THEREBY, A PLURALITY OF MEANS INDIVIDUALLY DRIVEN BY SAID MOTORS, CONTROL MEANS FOR VARYING THE DISPLACEMENT OF AT LEAST ONE OF SAID MOTORS, SENSING MEANS IN OPERATIVE ASSOCIATION WITH SAID ONE OF SAID MOTORS FOR SENSING INDEPENDENTLY OF SPEED AND INLET PRESSURE THE ACTUAL LOAD THEREON AND MEANS RESPONSIVE TO SAID SENSING MEANS FOR AUTOMATICALLY MODIFYING THE ACTION OF SAID
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |