US3359960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase ventilation
Assignee: Motors Liquidation Co
•
Filing: 1964-12-21
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Granted: 1967-12-26
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 William D Pittsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:25
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7749
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN COMBINATION, AN INTERNAL COMBUSTION ENGINE HAVING A CRANKCASE, AN INDUCTION SYSTEM AND A PLURALITY OF CYLINDERS AND NORMALLY OPERABLE UNDER LOAD ABOVE A PREDETERMINED CYLINDER FIRING FREQUENCY AND CRANKCASE VENTILATION VALVE CONNECTED WITH SAID CRANKCASE AND SAID INDUCTION SYSTEM AND INCLUDING A SPRING BIASED PLUNGER RECIPROCABLY MOVABLE TO CONTROL THE FLOW OF CRANKCASE VAPORS THERETHROUGH, SAID PLUNGER AND SPRING HAVING A NATURAL FREQUENCY OF VIBRATION BELOW SAID PREDETERMINED CYLINDER FIRING FREQUENCY.
Claim 2
Dependent Claim
72 words
IN COMBINATION, AN INTERNAL COMBUSTION ENGINE HAVING A CRANKCASE, AN INDUCTION SYSTEM AND A PLURALITY OF CYLINDERS AND NORMALLY OPERABLE UNDER LOAD ABOVE A PREDETERMINED CYLINDER FIRING FREQUENCY AND CRANKCASE VENTILATION VALVE CONNECTED WITH SAID CRANKCASE AND SAID INDUCTION SYSTEM AND INCLUDING A SPRING BIASED PLUNGER RECIPROCABLY MOVABLE TO CONTROL THE FLOW OF CRANKCASE VAPORS THERETHROUGH, SAID PLUNGER AND SPRING HAVING A NATURAL FREQUENCY OF VIBRATION BELOW SAID PREDETERMINED CYLINDER FIRING FREQUENCY.
References Cited (Backward Citations)
US1696797A
Cited
US2359485A
Cited
US2620125A
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US3198208A
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US3105477A
Cited
US3105471A
Cited
US3263699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |