US3163355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel pump
Assignee: ACF Industries Inc
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Filing: 1961-12-21
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Granted: 1964-12-29
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Korte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:08
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/06; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; F02M2700/439
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
A VACUUM BOOSTER PUMP COMPRISING A CYLINDER, SAID CYLINDER COMPRISING AN ANNULAR WALL DEFINING A PUMPING CHAMBER, AN END WALL AT ONE END OF SAID CHAMBER HAVING AN OPENING CONNECTED TO A SOURCE OF OIL VAPOR AND A HEAD AT THE OTHER END OF SAID CHAMBER, A PISTON ROD SLIDABLE IN SAID OPENING IN SAID END WALL, A PISTON ON SAID ROD IN THE CYLINDER, SAID PISTON HAVING A PERIPHERAL GROOVE, A FLAT RESILIENT PACKING RING IN THE GROOVE, SAID RING HAVING A SLIDING SEALING FIT ON THE INTERIORR OF SAID CYLINDER AND THE BOTTOM OF THE GROOVE, AND BEING FREE TO SLIDE IN THE GROOVE, SAID ROD HAVING A SUFFICIENTLY LOOSE FIT IN SAID OPENING AS TO PROVIDE A RESTRICTED PASSAGE FOR ENTRY OF SUFFICIENT OIL VAPORS TO THE CYLINDER FOR LUBRICATING SAID PISTON WITHOUT SUBSTANTIAL AIR LEAKAGE, A SPRING REACTING FROM THE HEAD AGAINST THE PISTON ADAPTED TO DRIVE THE PISTON IN THE DIRECTION TOWARD SAID END WALL, SAID HEAD HAVING AN INLET PASSAGE AND AN OUTLET PASSAGE, SAID END WALL HAVING AN INLET PASSAGE AND AN OUTLET PASAGE, EACH INLET PASSAGE HAVING A CHECK VALVE THEREIN ADAPTED TO OPEN IN THE DIRECTION TOWARD THE CHAMBER, AND EACH OUTLET PASSAGE HAVING A CHECK VALVE THEREIN ADAPTED TO OPEN IN THE DIRECTION AWAY FROM THE CHAMBER.
Claim 2
Dependent Claim
217 words
A VACUUM BOOSTER PUMP COMPRISING A CYLINDER, SAID CYLINDER COMPRISING AN ANNULAR WALL DEFINING A PUMPING CHAMBER, AN END WALL AT ONE END OF SAID CHAMBER HAVING AN OPENING CONNECTED TO A SOURCE OF OIL VAPOR AND A HEAD AT THE OTHER END OF SAID CHAMBER, A PISTON ROD SLIDABLE IN SAID OPENING IN SAID END WALL, A PISTON ON SAID ROD IN THE CYLINDER, SAID PISTON HAVING A PERIPHERAL GROOVE, A FLAT RESILIENT PACKING RING IN THE GROOVE, SAID RING HAVING A SLIDING SEALING FIT ON THE INTERIORR OF SAID CYLINDER AND THE BOTTOM OF THE GROOVE, AND BEING FREE TO SLIDE IN THE GROOVE, SAID ROD HAVING A SUFFICIENTLY LOOSE FIT IN SAID OPENING AS TO PROVIDE A RESTRICTED PASSAGE FOR ENTRY OF SUFFICIENT OIL VAPORS TO THE CYLINDER FOR LUBRICATING SAID PISTON WITHOUT SUBSTANTIAL AIR LEAKAGE, A SPRING REACTING FROM THE HEAD AGAINST THE PISTON ADAPTED TO DRIVE THE PISTON IN THE DIRECTION TOWARD SAID END WALL, SAID HEAD HAVING AN INLET PASSAGE AND AN OUTLET PASSAGE, SAID END WALL HAVING AN INLET PASSAGE AND AN OUTLET PASAGE, EACH INLET PASSAGE HAVING A CHECK VALVE THEREIN ADAPTED TO OPEN IN THE DIRECTION TOWARD THE CHAMBER, AND EACH OUTLET PASSAGE HAVING A CHECK VALVE THEREIN ADAPTED TO OPEN IN THE DIRECTION AWAY FROM THE CHAMBER.
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) | 1967-12-29 | 1968-06-29 | 1968-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-29 | 1972-06-29 | 1972-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-29 | 1976-06-29 | 1976-12-29 | $7700.00 | Window Closed / Lapsed |