US3145697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase reculating system
Assignee: Individual
•
Filing: —
•
Granted: 1964-08-25
•
Expires: 1981-08-25
Abstract
No abstract record available.
Inventors
- 👤 Etal J M Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:46
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; F01M13/0033; Y; Y10; Y10S; Y10S55/00; Y10S55/30; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7752; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/781; Y10T137/7837; Y10T137/7847
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
CRANKCASE REGULATING MEANS FOR AN INTERNAL COMBUSTION ENGINE HAVING A CRANKCASE AND AN INLET MANIFOLD AND COMPRISING: CONDUIT MEANS BETWEEN SAID INLET MANIFOLD AND SAID CRANKCASE; A REGULATOR VALVE ASSEMBLY IN SAID CONDUIT MEANS AND OPERABLE TO MAINTAIN A SUBATMOSPHERIC PRESSURE IN SAID CRANKCASE DURING NORMAL OPERATION OF SAID ENGINE; AND FRESH AIR INLET MEANS FOR SUPPLYING AIR TO SAID CRANKCASE, SAID AIR INLET MEANS INCLUDING A HOUSING CONTAINING A FILTER ELEMENT AND A VALVE PLATE, SAID VALVE PLATE HAVING A CALIBRATED ORIFICE FORMED THEREIN TO PERMIT PASSAGE OF A PREDETERMINED AMOUNT OF AIR THERETHROUGH AND INTO SAID CRANKCASE AND BEING BIASED IN VALVE CLOSED POSITION BY SAID FILTER ELEMENT, SAID VALVE PLATE BEING ADAPTED TO OPEN WHEN ABNORMAL PRESSURES ARE CREATED IN SAID CRANKCASE TO RELIEVE SAID ABNORMAL PRESSURES.
Claim 2
Dependent Claim
130 words
CRANKCASE REGULATING MEANS FOR AN INTERNAL COMBUSTION ENGINE HAVING A CRANKCASE AND AN INLET MANIFOLD AND COMPRISING: CONDUIT MEANS BETWEEN SAID INLET MANIFOLD AND SAID CRANKCASE; A REGULATOR VALVE ASSEMBLY IN SAID CONDUIT MEANS AND OPERABLE TO MAINTAIN A SUBATMOSPHERIC PRESSURE IN SAID CRANKCASE DURING NORMAL OPERATION OF SAID ENGINE; AND FRESH AIR INLET MEANS FOR SUPPLYING AIR TO SAID CRANKCASE, SAID AIR INLET MEANS INCLUDING A HOUSING CONTAINING A FILTER ELEMENT AND A VALVE PLATE, SAID VALVE PLATE HAVING A CALIBRATED ORIFICE FORMED THEREIN TO PERMIT PASSAGE OF A PREDETERMINED AMOUNT OF AIR THERETHROUGH AND INTO SAID CRANKCASE AND BEING BIASED IN VALVE CLOSED POSITION BY SAID FILTER ELEMENT, SAID VALVE PLATE BEING ADAPTED TO OPEN WHEN ABNORMAL PRESSURES ARE CREATED IN SAID CRANKCASE TO RELIEVE SAID ABNORMAL PRESSURES.
References Cited (Backward Citations)
US2359485A
Cited
US2423592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |