US3199286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic drive
Assignee: Gar Wood Industries Inc
•
Filing: 1962-05-16
•
Granted: 1965-08-10
•
Expires: 1982-05-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:18
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4157; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F16H61/42; F16H61/439
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
A HYDROSTATIC DRIVE SYSTEM COMPRISING: A VARIABLE DISPLACEMENT FLUID PUMP; A PRIME MOVER FOR DRIVING SAID PUMP; A FLUID MOTOR IN FLUID COMMUNICATION WIT SAID PUMP AND ADAPTED TO BE POWERED BY THE FLUID THEREFROM; VARIABLE RELIEF VALVE MEANS FOR CONTROLLING THE OUTPUT PRESSURE OF SAID PUMP; THROTTLE MEANS FOR CONTROLLING THE SPEED OF SAID PRIME MOVER AND FOR VARYING THE OUTPUT DISPLACEMENT OF SAID PUMP; AND BRAKING MEANS INCLUDING A MANUALLY ACTUATABLE BRAKE LEVER FOR PROGRESSIVELY HYDRAULICALLY BRAKING SAID MOTOR, SID RELIEF VALVE MEANS BEING RESPONSIVE TO SAID THROTTLE MEANS TO ASSUME A MAXIMUM PRESSURE SETTING WHEN SAID PUMP IS IN A POSITIVE OUTPUT POSITTION, AND RESPONSIVE TO SAID BRAKING MEANS TO ASSUME A PRESSURE SETTING PROPORTIONAL TO THE POSITION OF SAID BRAKE LEVER WHEN SAID PUMP IS IN A ZERO DISPLACEMENT POSITION TO THEREBY PROVIDE A BRAKING LOAD AGAINST SAID MOTOR MUST PUMP.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |