Patent US3253775A successfully refreshed from Google Patents.
US3253775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid supply system
Assignee: Motors Liquidation Co
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Filing: 1965-03-30
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Granted: 1966-05-31
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 George W Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:08
CPC Classifications
B; B60; B60G; B60G15/00; B60G15/08; B60G15/12; B60G17/00; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; B60G17/0528; B60K; B60K17/00; B60K17/04; B60K17/043; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86067; Y10T137/86919; Y10T137/86928; Y10T137/877; Y10T137/87708; Y10T137/87732; Y10T137/87917; Y10T137/87981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
336 words
IN COMBINATION, A PUMP HOUSING HAVING A FIRST PORTION AND A SECOND PORTION JOINED TO SAID FIRST PORTION TO FORM A CHAMBER, A FLEXIBLE DIAPHRAGM EXTENDING TRANSVERSELY WITHIN SAID CHAMBER AND HAVING THE OUTER PERIPHERY THEREOF IN SEALING ENGAGEMENT WITH THE JUNCTURE OF SAID HOUSING PORTIONS FOR DIVIDING SAID CHAMBER INTO TWO COMPARTMENTS, EACH OF SAID HOUSING PORTIONS INCLUDING CYLINDRER MEANS DISPOSED ON OPPOSITE SIDES OF SAID DIAPHRAGM, ONE OF SAID CYLINDER MEANS BEING OF A GREATER DIAMETER THAN THE OTHER OF SAID CYLINDER MEANS, PISTON MEANS IN EACH OF SAID CYLINDER MEANS, PISTON ROD MEANS CONNECTING SAID PISTON MEANS HAVING A PORTION THEREON SEALINGLY CONNECTED TO SAID DIAPHRAGM MEANS TO BE RECIPROCATED THEREBY ALONG WITH SAID PISTON MEANS IN SAID CYLINDER MEANS, MEANS FORMING AN AXIAL PASSAGEWAY DIRECTED THROUGH SAID PISTON ROD MEANS FOR INTERCOMMUNICATING SAID CYLINDER MEANS, MEANS FORMING AN INLET PASSAGEWAY THROUGH ONE OF SAID PISTON MEANS FOR COMMUNICATING ONE OF SAID COMPARTMENTS WITH ONE OF SAID CYLINDER MEANS, FIRST VALVE MEANS SUPPORTED BY SAID ONE OF SAID PISTON MEANS FOR SELECTIVELY OPENING AND CLOSING SAID INLET PASSAGEWAY IN SAID ONE OF SAID PISTON MEANS UPON RECIPROCATION OF SAID PISTON ROD MEANS WHEREBY AIR IS DRAWN FROM SAID ONE OF SAID COMPARTMENTS AND DISCHARGED INTO SAID AXIAL PASSAGEWAY, SECOND VALVE MEANS IN SAID AXIAL PASSAGEWAY PROVIDING THE DUAL FUNCTION OF A DISCHARGE VALVE FROM SAID LARGE DIAMETER CYLINDER MEANS AND IN INLET VALVE FOR THE OTHER CYLINDER MEANS, MEANS FORMING PORTS IN SAID HOUSING FOR COMMUNICATING EACH OF SAID COMPARTMENTS TO ATMOSPHERIC PRESSURE, MEANS FORMING AN ADDITIONAL PORT IN SAID HOUSING ADAPTED TO BE CONNECTED TO A SUBATMOSPHERIC SOURCE OF PRESSURE, AND THIRD VALVE MEANS ACTUATED BY RECIPROCAL MOVEMENT OF SAID PISTON ROD MEANS FOR ALTERNATELY CONNECTING SAID ADDITIONAL PORT WITH ONE OF SAID COMPARTMENT PORTS WHILE LEAVING THE OTHER PORT EXPOSED TO ATMOSPHERE TO EFFECT A PRESSURE DIFFERENTIAL ACROSS SAID DIAPHRAGM FOR PRODUCING THE ABOVE MENTIONED RECIRPOCATION OF SAID PISTON MEANS IN SAID CYLINDER MEANS TO OBTAIN A TWO-STAGE COMPRESSION OF FLUID.
Claim 2
Dependent Claim
336 words
IN COMBINATION, A PUMP HOUSING HAVING A FIRST PORTION AND A SECOND PORTION JOINED TO SAID FIRST PORTION TO FORM A CHAMBER, A FLEXIBLE DIAPHRAGM EXTENDING TRANSVERSELY WITHIN SAID CHAMBER AND HAVING THE OUTER PERIPHERY THEREOF IN SEALING ENGAGEMENT WITH THE JUNCTURE OF SAID HOUSING PORTIONS FOR DIVIDING SAID CHAMBER INTO TWO COMPARTMENTS, EACH OF SAID HOUSING PORTIONS INCLUDING CYLINDRER MEANS DISPOSED ON OPPOSITE SIDES OF SAID DIAPHRAGM, ONE OF SAID CYLINDER MEANS BEING OF A GREATER DIAMETER THAN THE OTHER OF SAID CYLINDER MEANS, PISTON MEANS IN EACH OF SAID CYLINDER MEANS, PISTON ROD MEANS CONNECTING SAID PISTON MEANS HAVING A PORTION THEREON SEALINGLY CONNECTED TO SAID DIAPHRAGM MEANS TO BE RECIPROCATED THEREBY ALONG WITH SAID PISTON MEANS IN SAID CYLINDER MEANS, MEANS FORMING AN AXIAL PASSAGEWAY DIRECTED THROUGH SAID PISTON ROD MEANS FOR INTERCOMMUNICATING SAID CYLINDER MEANS, MEANS FORMING AN INLET PASSAGEWAY THROUGH ONE OF SAID PISTON MEANS FOR COMMUNICATING ONE OF SAID COMPARTMENTS WITH ONE OF SAID CYLINDER MEANS, FIRST VALVE MEANS SUPPORTED BY SAID ONE OF SAID PISTON MEANS FOR SELECTIVELY OPENING AND CLOSING SAID INLET PASSAGEWAY IN SAID ONE OF SAID PISTON MEANS UPON RECIPROCATION OF SAID PISTON ROD MEANS WHEREBY AIR IS DRAWN FROM SAID ONE OF SAID COMPARTMENTS AND DISCHARGED INTO SAID AXIAL PASSAGEWAY, SECOND VALVE MEANS IN SAID AXIAL PASSAGEWAY PROVIDING THE DUAL FUNCTION OF A DISCHARGE VALVE FROM SAID LARGE DIAMETER CYLINDER MEANS AND IN INLET VALVE FOR THE OTHER CYLINDER MEANS, MEANS FORMING PORTS IN SAID HOUSING FOR COMMUNICATING EACH OF SAID COMPARTMENTS TO ATMOSPHERIC PRESSURE, MEANS FORMING AN ADDITIONAL PORT IN SAID HOUSING ADAPTED TO BE CONNECTED TO A SUBATMOSPHERIC SOURCE OF PRESSURE, AND THIRD VALVE MEANS ACTUATED BY RECIPROCAL MOVEMENT OF SAID PISTON ROD MEANS FOR ALTERNATELY CONNECTING SAID ADDITIONAL PORT WITH ONE OF SAID COMPARTMENT PORTS WHILE LEAVING THE OTHER PORT EXPOSED TO ATMOSPHERE TO EFFECT A PRESSURE DIFFERENTIAL ACROSS SAID DIAPHRAGM FOR PRODUCING THE ABOVE MENTIONED RECIRPOCATION OF SAID PISTON MEANS IN SAID CYLINDER MEANS TO OBTAIN A TWO-STAGE COMPRESSION OF FLUID.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |