US3587544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine vapor recycling device with internal temperature regulation
Assignee: Green Bay Research Corp
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Filing: 1969-10-27
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Granted: 1971-06-28
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Expires: 1989-10-27
Abstract
Abstract AN ENGINE VAPOR RECYCLING DEVICE HAVING VALVE BALLS SLIDEABLE IN A SLEEVE AND WHICH MAY STICK AT LOW TEMPERATURES. THE BALLS ARE PREVENTED FROM STICKING BY CONTROLLNG THE TEMPERATURE THEREOF WHEN THE ENGINE IS OF. THIS MAY BE ACCOMPLISHED BY AN INSULATING CASING, OR BY A THERMOSTAT CONTROLLED HEATING COIL. STARTING OF THE ENGINE WILL CAUSE THE THERMOSTAT TO SHUT OFF AN OPERATING COIL.
Inventors
- 👤 Cecil W Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:20
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F01M5/00; F01M5/02; F01M5/021
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |