US3127745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic transmission
Assignee: New York Air Brake LLC
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Filing: 1962-07-05
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Granted: 1964-04-07
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 John E G Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/478
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A HYDROSTATIC TRANSMISSION COMPRISING (A) A MOTOR; (B) A VARIABLE DISPLACEMENT PUMP; (C) FIRST AND SECOND CONDUITS CONNECTING THE PUMP AND MOTOR IN A TRANSMISSION CIRCUIT; (D) A DISPLACEMENT CONTROL ELEMENT CONNECTED WITH THE PUMP AND HAVING A MAXIMUM DISPLACEMENT POSITION IN WHICH THE PUMP DISCHARGES TO THE FIRST CONDUIT AND A MINIMUM DISPLACEMENT POSITION; (E) A MANUAL ACTUATOR; (F) A RESERVOIR; (G) A SOURCE OF FLUID UNDER PRESSURE; (H) A FLUID PRESSURE POSITION-RESPONSE SERVO CONTROL CONNECTED WITH THE MANUAL ACTUATOR AND THE DISPLACEMENT CONTROL ELEMENT FOR POSITIONING THE LATTER IN ACCORDANCE WITH THE POSITION OF TH EFORMER, THE SERVO CONTROL BEING CONNECTED WITH THE DERIVING MOTIVE FLUID FROM THE SOURCE AND INCLUDING A FLUID PRESSURE MOTOR CONNECTED WITH THE DISPLACEMENT CONTROL ELEMENT;
Claim 2
Dependent Claim
123 words
A HYDROSTATIC TRANSMISSION COMPRISING (A) A MOTOR; (B) A VARIABLE DISPLACEMENT PUMP; (C) FIRST AND SECOND CONDUITS CONNECTING THE PUMP AND MOTOR IN A TRANSMISSION CIRCUIT; (D) A DISPLACEMENT CONTROL ELEMENT CONNECTED WITH THE PUMP AND HAVING A MAXIMUM DISPLACEMENT POSITION IN WHICH THE PUMP DISCHARGES TO THE FIRST CONDUIT AND A MINIMUM DISPLACEMENT POSITION; (E) A MANUAL ACTUATOR; (F) A RESERVOIR; (G) A SOURCE OF FLUID UNDER PRESSURE; (H) A FLUID PRESSURE POSITION-RESPONSE SERVO CONTROL CONNECTED WITH THE MANUAL ACTUATOR AND THE DISPLACEMENT CONTROL ELEMENT FOR POSITIONING THE LATTER IN ACCORDANCE WITH THE POSITION OF TH EFORMER, THE SERVO CONTROL BEING CONNECTED WITH THE DERIVING MOTIVE FLUID FROM THE SOURCE AND INCLUDING A FLUID PRESSURE MOTOR CONNECTED WITH THE DISPLACEMENT CONTROL ELEMENT;
References Cited (Backward Citations)
US3003309A
Cited
US3017750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |