Patent US3273513A successfully refreshed from Google Patents.
US3273513A
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Oil burner pump unit with air purging means
Assignee: Sundstrand Corp
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Filing: 1965-04-28
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Granted: 1966-09-20
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Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Roper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:56
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/24; F04C14/26; F23; F23K; F23K5/00; F23K5/02; F23K5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
IN AN OIL BURNER PUMPING SYSTEM, A CASING, MEANS PROVIDING AN INLET TO THE CASING ADAPTED FOR CONNECTION WITH A SOURCE OF BURNER OIL, A DRIVE SHAFT MOUNTED IN THE CASING, A PUMP IN THE CASING DRIVEN BY SAID SHAFT, HAVING A LOW PRESSURE INTAKE COMMUNICATING WITH SAID INLET AND HAVING A HIGH PRESSURE OUTLET, MEANS PROVIDING A BURNER PORT IN THE CASING ADAPTED FOR CONNECTION WITH AN OIL BURNER, A DISCHARGE PASSAGE IN THE CASING CONNECTING THE HIGH PRESSURE OUTLET AND THE BURNER PORT, A PRESSURE RESPONSIVE VALVE TO THE DISCHARGE PASSAGE ADAPTED TO ESTABLISH COMMUNICATION BETWEEN THE HIGH PRESSURE OUTLET AND THE BURNER PORT UPON THE BUILDUP OF A PREDETERMINED DISCHARGED PRESSURE, AIR PURGING MEANS COMPRISING A PORT IN THE CASING COMMUNICATING WITH SAID PASSAGE, A CYLINDRICAL RECESS IN THE CASING COMMUNICATING WITH SAID PURGE PORT AND OPENING TO THE EXTERIOR OF THE CASING, MANUALLY OPERABLE AIR PURGE PLUG THREADABLY ADJUSTABLE IN SAID RECESS, SAID PLUG COMPRISING A CYLINDRICAL MEMBER HAVING A REDUCED INNER END PORTION SLIGHTLY SPACED FROM THE RECESS WALL AND PROVIDING BETWEEN THE WALL AND THE REDUCED POR-
Claim 2
Dependent Claim
183 words
IN AN OIL BURNER PUMPING SYSTEM, A CASING, MEANS PROVIDING AN INLET TO THE CASING ADAPTED FOR CONNECTION WITH A SOURCE OF BURNER OIL, A DRIVE SHAFT MOUNTED IN THE CASING, A PUMP IN THE CASING DRIVEN BY SAID SHAFT, HAVING A LOW PRESSURE INTAKE COMMUNICATING WITH SAID INLET AND HAVING A HIGH PRESSURE OUTLET, MEANS PROVIDING A BURNER PORT IN THE CASING ADAPTED FOR CONNECTION WITH AN OIL BURNER, A DISCHARGE PASSAGE IN THE CASING CONNECTING THE HIGH PRESSURE OUTLET AND THE BURNER PORT, A PRESSURE RESPONSIVE VALVE TO THE DISCHARGE PASSAGE ADAPTED TO ESTABLISH COMMUNICATION BETWEEN THE HIGH PRESSURE OUTLET AND THE BURNER PORT UPON THE BUILDUP OF A PREDETERMINED DISCHARGED PRESSURE, AIR PURGING MEANS COMPRISING A PORT IN THE CASING COMMUNICATING WITH SAID PASSAGE, A CYLINDRICAL RECESS IN THE CASING COMMUNICATING WITH SAID PURGE PORT AND OPENING TO THE EXTERIOR OF THE CASING, MANUALLY OPERABLE AIR PURGE PLUG THREADABLY ADJUSTABLE IN SAID RECESS, SAID PLUG COMPRISING A CYLINDRICAL MEMBER HAVING A REDUCED INNER END PORTION SLIGHTLY SPACED FROM THE RECESS WALL AND PROVIDING BETWEEN THE WALL AND THE REDUCED POR-
References Cited (Backward Citations)
US2915015A
Cited
US2931314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |