Patent US3174276A successfully refreshed from Google Patents.
US3174276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-engine piston and cylinder arrangement
Assignee: Cleveland Pneumatic Industries Inc
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Filing: 1962-07-30
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Granted: 1965-03-23
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Charles H Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:18
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A FLUID ENGINE IN WHICH A WORKING FLUID TRAVERSES THERMODYNAMIC CYCLE OF COMPRESSION, HEATING, EXPANSION AND COOLING STAGES, SAID ENGINE COMPISING; HOUSING PISTON MEANS DEFINING CYLINDER MEANS THEREIN, PISTON MEANS IN SAID CYLINDER DEFINING THEREBETWEEN A COMPRESSION CHAMBER FOR RECEIVING SAID FLUID FROM THE COOLING STAGE OF SAID CYCLE AND AN EXPANSION CHAMBER FOR RECEIVING SAID FLUID FROM THE HEATING STAGE OF SAID CYCLE, CONNECTING MEANS CONNECTING SAID PISTON MEANS TO A WORKING OUTPUT SHAFT, SAID COMPRESSION CHAMBER BEING DISPOSED IN LONGITUDI NALLY SPACED RELATIONSHIP WITH AND INTERMEDIATE OF SAID EXPANSION CHAMBER AND SAID SCONNECTING MEANS
Claim 2
Dependent Claim
96 words
A FLUID ENGINE IN WHICH A WORKING FLUID TRAVERSES THERMODYNAMIC CYCLE OF COMPRESSION, HEATING, EXPANSION AND COOLING STAGES, SAID ENGINE COMPISING; HOUSING PISTON MEANS DEFINING CYLINDER MEANS THEREIN, PISTON MEANS IN SAID CYLINDER DEFINING THEREBETWEEN A COMPRESSION CHAMBER FOR RECEIVING SAID FLUID FROM THE COOLING STAGE OF SAID CYCLE AND AN EXPANSION CHAMBER FOR RECEIVING SAID FLUID FROM THE HEATING STAGE OF SAID CYCLE, CONNECTING MEANS CONNECTING SAID PISTON MEANS TO A WORKING OUTPUT SHAFT, SAID COMPRESSION CHAMBER BEING DISPOSED IN LONGITUDI NALLY SPACED RELATIONSHIP WITH AND INTERMEDIATE OF SAID EXPANSION CHAMBER AND SAID SCONNECTING MEANS
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |