Patent US3295453A successfully refreshed from Google Patents.
US3295453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pump device
Assignee: American Air and Power Co
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Filing: 1965-10-21
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Granted: 1967-01-03
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:32
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/1037; F04B53/12; F04B53/125; F04B53/127; F04B53/128; F04B9/00; F04B9/08; F04B9/12; F04B9/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PORTABLE FLUID PUMP DEVICE, COMPRISING IN COMBINATION: A PNEUMATIC ACTIVATOR INCLUDING A RECIPROCATING ROD; A SLEEVE CASING CONNECTED TO SAID ACTIVATOR AND PROVIDING A PUMP CHAMBER AROUND SAID ROD, SAID CHAMBER HAVING AN INLET AND AN OUTLET; A PISTON ATTACHED TO SAID ROD FOR RECIPROCATION THEREWITH IN SAID CHAMBER; AND A CHECK-VALVE IN SAID PISTON FOR A ONE-WAY FLUID FLOW THROUGH SAID PISTON FROM SAID INLET TO SAID OUTLET DURING THE MOTION OF SAID PISTON TOWARD SAID INLET, SAID INLET REMAINING OPEN AT ALL TIMES TO FLOW THERETHROUGH IN EITHER DIRECTION.
Claim 2
Dependent Claim
92 words
A PORTABLE FLUID PUMP DEVICE, COMPRISING IN COMBINATION: A PNEUMATIC ACTIVATOR INCLUDING A RECIPROCATING ROD; A SLEEVE CASING CONNECTED TO SAID ACTIVATOR AND PROVIDING A PUMP CHAMBER AROUND SAID ROD, SAID CHAMBER HAVING AN INLET AND AN OUTLET; A PISTON ATTACHED TO SAID ROD FOR RECIPROCATION THEREWITH IN SAID CHAMBER; AND A CHECK-VALVE IN SAID PISTON FOR A ONE-WAY FLUID FLOW THROUGH SAID PISTON FROM SAID INLET TO SAID OUTLET DURING THE MOTION OF SAID PISTON TOWARD SAID INLET, SAID INLET REMAINING OPEN AT ALL TIMES TO FLOW THERETHROUGH IN EITHER DIRECTION.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |