Patent US3252425A successfully refreshed from Google Patents.
US3252425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve pulsator diaphragms for fuel pumps
Assignee: AIRTEX PROD
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Filing: 1963-12-05
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Granted: 1966-05-24
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Expires: 1983-12-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:19
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; F02M2700/439
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A FUEL PUMP COMPRISING A BODY MEMBER HAVING VALVES AND A PUMP CHAMBERS WITH A ACTUATABLE PUMPING MEANS THEREIN, AND AN END CLOSURE FOR SAID BODY MEMBER A FLEXIBLE PULSATOR ELEMENT INTERMEDIATE SAID END CLOSURE AND SAID BODY MEMBER AND SUBSTANTIALLY ISOLATING SAID END CLOSURE FROM SAID BODY MEMBER WHEREIN SAID END CLOSURE THUS EFFECTING AN AIR DOME FOR SAID PUMP, SAID PULSATOR ELEMENT HAVING A NORMALLY CLOSED PORT THERETHROUGH ADAPTED TO OPEN IN RESPONSE TO EXCESS PRESSURE IN SAID END CLOSURE NORMAL OPERATIONAL LIMITS TO VENT SAID EXCESS PRESSURE INTO SAID PUMP BODY.
Claim 2
Dependent Claim
94 words
A FUEL PUMP COMPRISING A BODY MEMBER HAVING VALVES AND A PUMP CHAMBERS WITH A ACTUATABLE PUMPING MEANS THEREIN, AND AN END CLOSURE FOR SAID BODY MEMBER A FLEXIBLE PULSATOR ELEMENT INTERMEDIATE SAID END CLOSURE AND SAID BODY MEMBER AND SUBSTANTIALLY ISOLATING SAID END CLOSURE FROM SAID BODY MEMBER WHEREIN SAID END CLOSURE THUS EFFECTING AN AIR DOME FOR SAID PUMP, SAID PULSATOR ELEMENT HAVING A NORMALLY CLOSED PORT THERETHROUGH ADAPTED TO OPEN IN RESPONSE TO EXCESS PRESSURE IN SAID END CLOSURE NORMAL OPERATIONAL LIMITS TO VENT SAID EXCESS PRESSURE INTO SAID PUMP BODY.
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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |