Patent US3621758A successfully refreshed from Google Patents.
US3621758A
Expired / Lapsed
US
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Reciprocating piston machine
Assignee: Individual
•
Filing: 1970-06-16
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Granted: 1971-11-23
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Expires: 1990-06-16
Abstract
Abstract A RECIPROCATING PISTON-PIVOTALLY OSCILLATING CYLINDER INTERNAL COMBUSTION MACHINE IS PROVIDED IN WHICH THE COMPONENTS ARE DESIGNED AND CONSTRUCTED IN A MANNER SO AS TO INCREASE THE ASPIRATING CAPACITY PER CYCLE OF THE MACHINE, AND IN WHICH A SIMPLE AND EFFECTIVE MEANS IS PROVIDE FOR CLOSING THE CYLINDER EXHAUST PORT INDEPENDENTLY OF THE PISTON RECIPROCATING MOTION RELATIVE TO THE CYLINDER SO AS TO RETAIN IN THE CYLINDER A LARGE PORTION OF THE ASPIRATED CHARGE.
Inventors
- 👤 John Herbert Beveridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:28
CPC Classifications
F; F02; F02B; F02B59/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |