US3123174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power steering system for articulated vehicles
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/2004; B; B62; B62D; B62D12/00; B62D5/00; B62D5/06; B62D5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A HYDRAULIC SYSTEM HAVING A FIRST SOURCE OF PRESSURIZED FLUID, A FLUID MOTOR TO BE ACTUATED FROM THE FIRST SOURCE, AN ACCUMULATOR, A FLUID CIRCUIT FOR CONNECTING THE FIRST SOURCE AND ACCUMULATOR TO THE FLUID MOTOR, A SECOND SOURCE OF PRESSURIZED FLUID, A PRESSURE RESPONSIVE VALVE INTERPOSED IN THE CIRCUIT BETWEEN THE ACCUMULATOR AND THE SECOND SOURCE, A SUMP IN SAID CIRCUIT SELECTIVELY CONNECTABLE WITH THE ACCUMULATOR BY SAID VALVE, SAID VALVE ADAPTED TO MAINTAIN THE ACCUMULATOR ENERGIZED WHENEVER THE PRESSURE IN THE SECOND SOURCE IS ABOVE A PREDETERMINED VALUE AND TO CONNECT THE SUMP WITH THE ACCUMULATOR SO AS TO DEENERGIZE THE LATTER WHENEVER THE PRESSURE IN THE SECOND SOURCE FALLS BELOW A PREDETERMINED VALUE.
Claim 2
Dependent Claim
117 words
IN A HYDRAULIC SYSTEM HAVING A FIRST SOURCE OF PRESSURIZED FLUID, A FLUID MOTOR TO BE ACTUATED FROM THE FIRST SOURCE, AN ACCUMULATOR, A FLUID CIRCUIT FOR CONNECTING THE FIRST SOURCE AND ACCUMULATOR TO THE FLUID MOTOR, A SECOND SOURCE OF PRESSURIZED FLUID, A PRESSURE RESPONSIVE VALVE INTERPOSED IN THE CIRCUIT BETWEEN THE ACCUMULATOR AND THE SECOND SOURCE, A SUMP IN SAID CIRCUIT SELECTIVELY CONNECTABLE WITH THE ACCUMULATOR BY SAID VALVE, SAID VALVE ADAPTED TO MAINTAIN THE ACCUMULATOR ENERGIZED WHENEVER THE PRESSURE IN THE SECOND SOURCE IS ABOVE A PREDETERMINED VALUE AND TO CONNECT THE SUMP WITH THE ACCUMULATOR SO AS TO DEENERGIZE THE LATTER WHENEVER THE PRESSURE IN THE SECOND SOURCE FALLS BELOW A PREDETERMINED VALUE.
References Cited (Backward Citations)
US2896733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |