Patent US3220178A successfully refreshed from Google Patents.
US3220178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat engine
Assignee: Individual
•
Filing: 1964-03-05
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Granted: 1965-11-30
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Expires: 1984-03-05
Abstract
No abstract record available.
Inventors
- 👤 John J Dineen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:39
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F25; F25B; F25B9/00; F25B9/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A HEAT ENGINE COMPRISING A HOUSING, A CYLINDER SUPPORTED BY SAID HOUSING, A CYLINDER HEAD CLOSING ONE END OF SAID CYLINDR, MEANS FOR HEATING SAID HEAD, A POWER PISTON RECIPROCABLY RECEIVED IN AND COAXIAL WITH SAID CYLINDER FOR MOVEMENT THROUGH COMPRESSION AND EXPANSION STROKES, A DISPLACER PISTON RECIPROCABLY RERECEIVED IN SAID CYLINDER BETWEEN SAID POWER PISTON AND HEAD DEFINING A HOT CHAMBER WITH SAID HEAD AND A COOL CHAMBER WITH SAID POWER PISTON, A SHAFT JOURNALLED IN SAID HOUSING, TRANSMISSION MEANS INTERCONNECTING SAID POWER PISTON AND SHAFT, CAM MEANS DRIVEN BY SAID SHAFT, FOLLOWER MEANS CENTRALLY DISPOSED WITH RESPECT TO SAID DISPLACER PISTON ENGAGING SAID CAM MEANS FOR DRIVING SAID DISPLACER PISTON, HEAT DISSIPATING MEANS PROVIDED
Claim 2
Dependent Claim
116 words
A HEAT ENGINE COMPRISING A HOUSING, A CYLINDER SUPPORTED BY SAID HOUSING, A CYLINDER HEAD CLOSING ONE END OF SAID CYLINDR, MEANS FOR HEATING SAID HEAD, A POWER PISTON RECIPROCABLY RECEIVED IN AND COAXIAL WITH SAID CYLINDER FOR MOVEMENT THROUGH COMPRESSION AND EXPANSION STROKES, A DISPLACER PISTON RECIPROCABLY RERECEIVED IN SAID CYLINDER BETWEEN SAID POWER PISTON AND HEAD DEFINING A HOT CHAMBER WITH SAID HEAD AND A COOL CHAMBER WITH SAID POWER PISTON, A SHAFT JOURNALLED IN SAID HOUSING, TRANSMISSION MEANS INTERCONNECTING SAID POWER PISTON AND SHAFT, CAM MEANS DRIVEN BY SAID SHAFT, FOLLOWER MEANS CENTRALLY DISPOSED WITH RESPECT TO SAID DISPLACER PISTON ENGAGING SAID CAM MEANS FOR DRIVING SAID DISPLACER PISTON, HEAT DISSIPATING MEANS PROVIDED
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |