US3157467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase ventilator device
Assignee: Richfield Oil Corp
•
Filing: 1963-08-12
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Granted: 1964-11-17
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Harold D Daigh
- 👤 Rondo H Patzig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:13
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
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A CRANKCASE VENTILATING SYSTEM FOR INTERNAL COMBUSTION ENGINES HAVING AN OPENING IN THE ENGINE ABOVE THE OIL LEVEL THROUGH WHICH BLOWBY FLUIDS CAN ESCAPE THE ENGINE AND CONDUIT MEANS PROVIDING FLUID COMMUNICATION BETWEEN SAID OPENING AND THE INDUCTION SYSTEM OF SAID ENGINE, SAID OPENING BEING SUBJECT OT THE CRANKCASE PRESSURE, SAID CONDUIT MEANS HAVING A DISCONTINUITY THEREIN WITH TWO OPEN SPACED APART CONDUIT ENDS, AND WHEREIN FLEXIBLE TUBULAR VALVE MEANS NORMALLY CLOSED IN RESPONSE TO MANIFOLD VACUUM AND ADAPTED TO OPEN IN RESPONSE TO PRESSURE BUILDUP IN SAID CRANKCASE TO PASS BLOWBY FLUIDS THROUGH SAID CONDUIT MEANS INTO SAID INDUCTION SYSTEM ARE OPERABLY POSITIONED BETWEEN SAID CONDUIT ENDS, THE IMPROVEMENT COMPRISING; A FRAME APPARATUS FOR HOLDING SAID CONDUIT MEANS IN
Claim 2
Dependent Claim
121 words
IN A CRANKCASE VENTILATING SYSTEM FOR INTERNAL COMBUSTION ENGINES HAVING AN OPENING IN THE ENGINE ABOVE THE OIL LEVEL THROUGH WHICH BLOWBY FLUIDS CAN ESCAPE THE ENGINE AND CONDUIT MEANS PROVIDING FLUID COMMUNICATION BETWEEN SAID OPENING AND THE INDUCTION SYSTEM OF SAID ENGINE, SAID OPENING BEING SUBJECT OT THE CRANKCASE PRESSURE, SAID CONDUIT MEANS HAVING A DISCONTINUITY THEREIN WITH TWO OPEN SPACED APART CONDUIT ENDS, AND WHEREIN FLEXIBLE TUBULAR VALVE MEANS NORMALLY CLOSED IN RESPONSE TO MANIFOLD VACUUM AND ADAPTED TO OPEN IN RESPONSE TO PRESSURE BUILDUP IN SAID CRANKCASE TO PASS BLOWBY FLUIDS THROUGH SAID CONDUIT MEANS INTO SAID INDUCTION SYSTEM ARE OPERABLY POSITIONED BETWEEN SAID CONDUIT ENDS, THE IMPROVEMENT COMPRISING; A FRAME APPARATUS FOR HOLDING SAID CONDUIT MEANS IN
References Cited (Backward Citations)
US3077871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |