US3173447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure refueling system
Assignee: Parker Hannifin Corp
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Filing: 1962-05-21
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Granted: 1965-03-16
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Lebow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:28
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/28; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86381
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A PRESSURE BLEED-OFF SYSTEM FOR USE WITH A HYDRANT FUEL SERVICER OF THE TYPE HAVING A SUPPLY CONDUIT FOR CONNECTION AT ONE END TO A SOURCE OF FUEL AND FOR CONNECTION AT ONE END OF TO A SOURCE OF FUEL AND FOR SYSTEM COMPRISING AN ACCUMULATOR, A CONDUIT, MEANS FOR CLOSING SAID CONDUIT AT OPPOSITE ENDS THEREOF, A FIRST LINE RUNNING FROM SAID ACCUMULATOR TO SAID CONDUIT, A NORMALLY CLOSED FIRST VALVE MOUNTED IN SAID FIRST LINE AND OPERABLE FOR PERMITTING FUEL LOCKED IN SAID CONDUIT TO BLEED-OFF INTO SAID ACCUMULATOR WHEN SAID FIRST VALVE IS OPENED, A SECOND LINE RUNNING FROM SAID ACCUMULATOR TO SAID CONDUIT, AND A SECOND VALVE MOUNTED IN SAID SECOND LINE, SAID SECOND VALVE BEING A NORMALLY CLOSED CHECK VALVE OPERABLE TO AN OPEN POSITION SO AT TO PERMIT FUEL TO FLOW FROM SAID ACCUMULATOR TO SAID CONDUIT ONLY WHEN THE FUEL PRESSURE IN SAID ACCUMULATOR EXCEEDS THE FUEL PRESSURE IN SAID CONDUIT.
Claim 2
Dependent Claim
158 words
A PRESSURE BLEED-OFF SYSTEM FOR USE WITH A HYDRANT FUEL SERVICER OF THE TYPE HAVING A SUPPLY CONDUIT FOR CONNECTION AT ONE END TO A SOURCE OF FUEL AND FOR CONNECTION AT ONE END OF TO A SOURCE OF FUEL AND FOR SYSTEM COMPRISING AN ACCUMULATOR, A CONDUIT, MEANS FOR CLOSING SAID CONDUIT AT OPPOSITE ENDS THEREOF, A FIRST LINE RUNNING FROM SAID ACCUMULATOR TO SAID CONDUIT, A NORMALLY CLOSED FIRST VALVE MOUNTED IN SAID FIRST LINE AND OPERABLE FOR PERMITTING FUEL LOCKED IN SAID CONDUIT TO BLEED-OFF INTO SAID ACCUMULATOR WHEN SAID FIRST VALVE IS OPENED, A SECOND LINE RUNNING FROM SAID ACCUMULATOR TO SAID CONDUIT, AND A SECOND VALVE MOUNTED IN SAID SECOND LINE, SAID SECOND VALVE BEING A NORMALLY CLOSED CHECK VALVE OPERABLE TO AN OPEN POSITION SO AT TO PERMIT FUEL TO FLOW FROM SAID ACCUMULATOR TO SAID CONDUIT ONLY WHEN THE FUEL PRESSURE IN SAID ACCUMULATOR EXCEEDS THE FUEL PRESSURE IN SAID CONDUIT.
References Cited (Backward Citations)
US2620125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |