US3138918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid engine having a pressurized crankcase
Assignee: Cleveland Pneumatic Industries Inc
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Filing: 1962-04-30
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Granted: 1964-06-30
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Expires: 1982-04-30
Abstract
No abstract record available.
Inventors
- 👤 Charles H Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:34
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A FLUID ENGINE COMPRISING CYLINDER MEANNS AND PISTON MEANS RECIPROCABLY MOUNTED THEREIN, SAID CYLINDER BEING CONSTRUCTED AND ARRANGED TO PROVIDE RELATIVELY ADJACENT ONE END THEREOF FLUID RECEIVING CHAMBERS OF VARYING VOLUME ON EITHER SIDE OF SAID PISTON, A CHAMBER FOR HOUSING A ROTATABLE OUTPUT MEMBER, CONNECTING MEANS INTERPOSED BETWEEN SAID PISTON MEANS AND SAID ROTATABLE OUTPUT MEMBER FOR TRANSLATING RECIPROCATING MOVEMENT OF SAID PISTON INTO ROTARY MOVEMENT OF SAID OUTPUT MEMBER, AND MEANS FOR ESTABLISHING COMMUNICATION BETWEEN SAID CHAMBERS ADJACENT SAID PISTON AND SAID CHAMBER HOUSING SAID ROTATABLE OUTPUT MEMBER WHEREBY FLUID CONVEYED TO SAID LATTER CHAMBER ASSISTS THE PISTON DURING ITS RETURN STROKE.
Claim 2
Dependent Claim
104 words
A FLUID ENGINE COMPRISING CYLINDER MEANNS AND PISTON MEANS RECIPROCABLY MOUNTED THEREIN, SAID CYLINDER BEING CONSTRUCTED AND ARRANGED TO PROVIDE RELATIVELY ADJACENT ONE END THEREOF FLUID RECEIVING CHAMBERS OF VARYING VOLUME ON EITHER SIDE OF SAID PISTON, A CHAMBER FOR HOUSING A ROTATABLE OUTPUT MEMBER, CONNECTING MEANS INTERPOSED BETWEEN SAID PISTON MEANS AND SAID ROTATABLE OUTPUT MEMBER FOR TRANSLATING RECIPROCATING MOVEMENT OF SAID PISTON INTO ROTARY MOVEMENT OF SAID OUTPUT MEMBER, AND MEANS FOR ESTABLISHING COMMUNICATION BETWEEN SAID CHAMBERS ADJACENT SAID PISTON AND SAID CHAMBER HOUSING SAID ROTATABLE OUTPUT MEMBER WHEREBY FLUID CONVEYED TO SAID LATTER CHAMBER ASSISTS THE PISTON DURING ITS RETURN STROKE.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |