US3202238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic steering systems
Assignee: Frank G Hough Co
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Filing: 1961-09-14
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Granted: 1965-08-24
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Expires: 1981-09-14
Abstract
No abstract record available.
Inventors
- 👤 Don S Strader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:37
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/06; B62D7/14; B62D7/142; B62D7/15; B62D7/1509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A HYDRAULIC STEERING SYSTEM FOR A MOTOR VEHICLE HAVING STEERABLE FORWARD AND REARWARD WHEEL ASSEMBLIES HYDRAULIC OPERATING MEANS TO STEER SAID ASSEMBLIES, A STEERING PUMP, A FIRST PILOT OPERATED VALVE, A SECOND PILOT OPERATED VALVE, FIRST HYDRAULIC CIRCUIT MEANS CONNECTING SAID FIRST PILOT OPERATED VALVE TO SAID STEERING PUMP FOR OPERATION OF SAID FIRST PILOT OPERATED VALVE RESPONSIVE TO OPERATION OF SAID STEERING PUMP, SECOND HYDRAULIC CIRCUIT MEANS CONNECTING SAID SECOND PILOT OPERATED VALVE TO SAID STEERING PUMP FOR OPERATION OF SAID SECOND PILOT OPERATED VALVE RESPONSIVE FOR OPERATION OF SAID STEERING PUMP AND INDEPENDENT OF THE OPERATION OF SAID FIRST PILOT OPERATED VALVE, A SOURCE OF HYDRAULIC FLUID UNDER PRESSURE, AND THIRD HYDRAULIC CIRCUIT MEANS INTERCONNECTING SAID SOURCE OF HYDRAULIC FLUID UNDER PRESSURE, SAID HYDRAULIC OPERATING MEANS AND SAID FIRST AND SECOND PILOT OPERATED VALVES FOR STEERING MOVEMENT OF SAID FORWARD AND REARWARD WHEEL ASSEMBLIES RESPONSIVE TO THE OPERATION OF SAID FIRST AND SECOND PILOT OPERATED VALVES BY SAID STEERING PUMP.
Claim 2
Dependent Claim
162 words
A HYDRAULIC STEERING SYSTEM FOR A MOTOR VEHICLE HAVING STEERABLE FORWARD AND REARWARD WHEEL ASSEMBLIES HYDRAULIC OPERATING MEANS TO STEER SAID ASSEMBLIES, A STEERING PUMP, A FIRST PILOT OPERATED VALVE, A SECOND PILOT OPERATED VALVE, FIRST HYDRAULIC CIRCUIT MEANS CONNECTING SAID FIRST PILOT OPERATED VALVE TO SAID STEERING PUMP FOR OPERATION OF SAID FIRST PILOT OPERATED VALVE RESPONSIVE TO OPERATION OF SAID STEERING PUMP, SECOND HYDRAULIC CIRCUIT MEANS CONNECTING SAID SECOND PILOT OPERATED VALVE TO SAID STEERING PUMP FOR OPERATION OF SAID SECOND PILOT OPERATED VALVE RESPONSIVE FOR OPERATION OF SAID STEERING PUMP AND INDEPENDENT OF THE OPERATION OF SAID FIRST PILOT OPERATED VALVE, A SOURCE OF HYDRAULIC FLUID UNDER PRESSURE, AND THIRD HYDRAULIC CIRCUIT MEANS INTERCONNECTING SAID SOURCE OF HYDRAULIC FLUID UNDER PRESSURE, SAID HYDRAULIC OPERATING MEANS AND SAID FIRST AND SECOND PILOT OPERATED VALVES FOR STEERING MOVEMENT OF SAID FORWARD AND REARWARD WHEEL ASSEMBLIES RESPONSIVE TO THE OPERATION OF SAID FIRST AND SECOND PILOT OPERATED VALVES BY SAID STEERING 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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |