US3146786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating system for pressurized oil apparatus
Assignee: Hitachi Ltd
•
Filing: 1963-07-01
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Granted: 1964-09-01
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Ishikawa Haruo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:44
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/027; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2612; Y10T137/2615; Y10T137/2622; Y10T137/2625; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769; Y10T137/777; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN OPERATING SYSTEM FOR PRESSURIZED OIL APPARATUS COMPRISING AT LEAST TWO PRESSURIZED OIL ACCUMULATORS EACH SERVING AS A PRESSURIZED OIL SOURCE OF SEPARATE PRESSURIZED OIL SYSTEMS, A PUMP FOR SUPPLYING PRESSURIZED OIL TO THESE PRESSURIZED OIL ACCUMULATORS, PRESSURIZED OIL CONDUITS FOR CONNECTING SAID PRESSURIZED OIL ACCUMULATORS WITH SAID PUMP AND HAVING A SUPPLY VALVE AT AN INLET OF EACH PRESSURIZED OIL ACCUMULATOR, AN OIL RESERVOIR CONTAINING OIL FOR SUPPLY TO SAID PUMP, AN UNLOADER FOR DISTRIBUTING PRESSURIZED OIL FROM SAID PUMP TO TWO CONDUITS, ONE SERVING TO SUPPLY SAID PRESSURIZED OIL FROM THE PUMP TO SAID PRESSURIZED OIL CONDUITS AND THE OTHER SUPPLYING TO SAID OIL RESERVOIR, PAIRS OF FIRST AND SECOND CONDUITS EACH PAIR DRAWING PRESSURIZED OIL FROM ONE OF
Claim 2
Dependent Claim
121 words
AN OPERATING SYSTEM FOR PRESSURIZED OIL APPARATUS COMPRISING AT LEAST TWO PRESSURIZED OIL ACCUMULATORS EACH SERVING AS A PRESSURIZED OIL SOURCE OF SEPARATE PRESSURIZED OIL SYSTEMS, A PUMP FOR SUPPLYING PRESSURIZED OIL TO THESE PRESSURIZED OIL ACCUMULATORS, PRESSURIZED OIL CONDUITS FOR CONNECTING SAID PRESSURIZED OIL ACCUMULATORS WITH SAID PUMP AND HAVING A SUPPLY VALVE AT AN INLET OF EACH PRESSURIZED OIL ACCUMULATOR, AN OIL RESERVOIR CONTAINING OIL FOR SUPPLY TO SAID PUMP, AN UNLOADER FOR DISTRIBUTING PRESSURIZED OIL FROM SAID PUMP TO TWO CONDUITS, ONE SERVING TO SUPPLY SAID PRESSURIZED OIL FROM THE PUMP TO SAID PRESSURIZED OIL CONDUITS AND THE OTHER SUPPLYING TO SAID OIL RESERVOIR, PAIRS OF FIRST AND SECOND CONDUITS EACH PAIR DRAWING PRESSURIZED OIL FROM ONE OF
References Cited (Backward Citations)
US2316445A
Cited
US3006356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |