Patent US3135219A successfully refreshed from Google Patents.
US3135219A
Expired / Lapsed
US
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Pumping apparatus
Assignee: Standard Oil Co
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Filing: 1960-09-29
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Granted: 1964-06-02
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Expires: 1980-09-29
Abstract
No abstract record available.
Inventors
- 👤 Archie A Hays
- 👤 Ruffin P Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:59
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/10; F04B53/1002; F04B53/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
FLUID PUMPING APPARATUS COMPRISING A PUMP CYLINDER, A RECIPROCATING PLUNGER WITHIN SAID CYLINDER AND A VALVE ASSEMBLY MOUNTED ON THE OUTBOARD END OF SAID CYLINDER, SAID VALVE ASSEMBLY COMPRISING AN INLET CONDUIT, AN OUTLET CONDUIT, A VALVE CHAMBER COMMUNICATING WITH SAID INLET CONDUIT AND SAID OUTLET CONDUIT, A BALL MEMBER POSITIONED IN SAID CHAMBER, SAID CHAMBER COMMUNICATING WITH THE OUTBOARD END OF SAID CYLINDER, A BALL-RETAINING WASHER MEMBER POSITIONED BETWEEN SAID BALL AND SAID CYLINDER, A FIRST SEATING SURFACE IN SAID INLET CONDUIT ADAPTED TO RECEIVE SAID BALL MEMBER IN SEALING CONTACT THEREWITH DURING THE DISCHARGE STROKE OF SAID PLUNGER, SAID WASHER MEMBER BEING PROVIDED WITH A NON-CIRCULAR OPENING THEREIN, SAID OPENING BEING ADAPTED TO RETAIN SAID BALL MEMBER IN SAID CHAMBER WHILE PERMITTINGK FLUID FROM SAID CHAMBER TO PASS THROUGH SAID OPENING INTO SAID CYLINDER DURING THE INTAKE STROKE OF SAID PLUNGER, AND BALL CHECK VALVE MEANS IN SAID OUTLET CONDUIT ADAPTED TO SEAL OFF SAID VALVE CHAMBER FROM FLUID DISCHARGED THEREFROM DURING THE INTAKE STROKE OF SAID PLUNGER.
Claim 2
Dependent Claim
170 words
FLUID PUMPING APPARATUS COMPRISING A PUMP CYLINDER, A RECIPROCATING PLUNGER WITHIN SAID CYLINDER AND A VALVE ASSEMBLY MOUNTED ON THE OUTBOARD END OF SAID CYLINDER, SAID VALVE ASSEMBLY COMPRISING AN INLET CONDUIT, AN OUTLET CONDUIT, A VALVE CHAMBER COMMUNICATING WITH SAID INLET CONDUIT AND SAID OUTLET CONDUIT, A BALL MEMBER POSITIONED IN SAID CHAMBER, SAID CHAMBER COMMUNICATING WITH THE OUTBOARD END OF SAID CYLINDER, A BALL-RETAINING WASHER MEMBER POSITIONED BETWEEN SAID BALL AND SAID CYLINDER, A FIRST SEATING SURFACE IN SAID INLET CONDUIT ADAPTED TO RECEIVE SAID BALL MEMBER IN SEALING CONTACT THEREWITH DURING THE DISCHARGE STROKE OF SAID PLUNGER, SAID WASHER MEMBER BEING PROVIDED WITH A NON-CIRCULAR OPENING THEREIN, SAID OPENING BEING ADAPTED TO RETAIN SAID BALL MEMBER IN SAID CHAMBER WHILE PERMITTINGK FLUID FROM SAID CHAMBER TO PASS THROUGH SAID OPENING INTO SAID CYLINDER DURING THE INTAKE STROKE OF SAID PLUNGER, AND BALL CHECK VALVE MEANS IN SAID OUTLET CONDUIT ADAPTED TO SEAL OFF SAID VALVE CHAMBER FROM FLUID DISCHARGED THEREFROM DURING THE INTAKE STROKE OF SAID PLUNGER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |