US3159150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase blow-by exhauster
Assignee: Johnson Products Inc
•
Filing: 1962-05-10
•
Granted: 1964-12-01
•
Expires: 1982-05-10
Abstract
No abstract record available.
Inventors
- 👤 John W Humphreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:19
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ENGINE ASSEMBLY COMPRISING: AN INTERNAL COMBUSTION ENGINE INCLUDING A SEALED CRANKCASE AND AN INTAKE MANIFOLD MEANS; CONDUIT MEANS EXTENDING BETWEEN SAID CRANKCASE AND MANIFOLD MEANS; FLOW REGULATOR MEANS FOR SAID CONDUIT MEANS INCLUDING A FLOW VALVE IN SAID CONDUIT MEANS AND A PRESSURE RESPONSIVE MEMBER HAVING ONE SIDE EXPOSED TO CRANKCASE PRESSURE AND THE OTHER SIDE EXPOSED TO ATMOSPHERIC PRESSURE; SAID PRESSURE RESPONSIVE MEMBER BEING ADAPTED TO SHIFT SAID VALVE GENERALLY IN PROPORTION TO CRANKCASE PRESSURE; AND SAID VALVE INCLUDING A SMALL, VACUUM-ASSIST, OPENING ACTION BY HAVING A SLIGHTLY GREATER AREA RESPONSIVE TO THE PRESSURE DIFFERENTIAL BETWEEN THE CRANKCASE AND THE INTAKE MANIFOLD TENDING TO OPEN SAID VALVE THAN THE AREA RESPONSIVE TO SAID DIFFERENTIAL TENDING TO CLOSE SAID VALVE.
Claim 2
Dependent Claim
121 words
AN ENGINE ASSEMBLY COMPRISING: AN INTERNAL COMBUSTION ENGINE INCLUDING A SEALED CRANKCASE AND AN INTAKE MANIFOLD MEANS; CONDUIT MEANS EXTENDING BETWEEN SAID CRANKCASE AND MANIFOLD MEANS; FLOW REGULATOR MEANS FOR SAID CONDUIT MEANS INCLUDING A FLOW VALVE IN SAID CONDUIT MEANS AND A PRESSURE RESPONSIVE MEMBER HAVING ONE SIDE EXPOSED TO CRANKCASE PRESSURE AND THE OTHER SIDE EXPOSED TO ATMOSPHERIC PRESSURE; SAID PRESSURE RESPONSIVE MEMBER BEING ADAPTED TO SHIFT SAID VALVE GENERALLY IN PROPORTION TO CRANKCASE PRESSURE; AND SAID VALVE INCLUDING A SMALL, VACUUM-ASSIST, OPENING ACTION BY HAVING A SLIGHTLY GREATER AREA RESPONSIVE TO THE PRESSURE DIFFERENTIAL BETWEEN THE CRANKCASE AND THE INTAKE MANIFOLD TENDING TO OPEN SAID VALVE THAN THE AREA RESPONSIVE TO SAID DIFFERENTIAL TENDING TO CLOSE SAID VALVE.
References Cited (Backward Citations)
US2423592A
Cited
US2775960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |