Patent US3105477A successfully refreshed from Google Patents.
US3105477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase valve ventilating system
Assignee: Novo Industrial Corp
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Filing: 1962-01-08
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Granted: 1963-10-01
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Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Wilfred W Lowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:55
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; Y; Y10; Y10S; Y10S55/00; Y10S55/19; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
228 words
FOR USE IN AN ENGINE CRANKCASE VENTILATING SYSTEM WHEREIN A CONDUIT COMMUNICATES BETWEEN THE ENGINE CRANKCASE AND THE AIR INTAKE FOR THE CYLINDERS, A VALVE STRUCTURE ADAPTED TO BE POSITIONED IN THE CONDUIT INCLUDING A VALVE ELEMENT BEING POSITIONED IN THE HOUSING AND IN, THE VALVE ELEMENT BEING POSITIONED IN THE HOUSING AND BEING IN THE FORM OF AN ELONGATED SOLID PIN ADAPTED TO BE DISPOSED NORMALLY IN A GENERALLY UPRIGHT POSITION, THE PIN HAVING A LOWER PORTION WITH A SMALLER EXTERIOR DIMENSION THAN ITS UPPER PORTION, THE BODY OF THE PIN IN BETWEEN THE TWO PORTIONS BEING GENERALLY TAPERED, A SPRING TO BIAS THE PIN AWAY FROM THE ORIFICE AT ALL TIMES, THE AT-REST POSITION OF THE PIN, WHEN THE SPRING IS AT ITS FREE LENGTH, BEING SUCH THAT THE SMALL CROSS SECTION LOWER PORTION OF THE PIN WILL BE GENERALLY WITHIN THE CONFINES AND LATERALLY ALIGNED WITH THE ORIFICE, THE EXTERIOR DIMENSIONS OF BOTH THE UPPER AND LOWER PORTIONS BEING LESS THAN THE INSIDE DIMENSION OF THE ORIFICE, THE FLOW AREA DEFINED BETWEEN THE LOWER PORTION OF THE PIN AND THE ORIFICE BEING SUBSTANTIALLY GREATER THAN THE FLOW AREA DEFINED BETWEEN THE UPPER PORTION OF THE PIN AND THE ORIFICE, THE DIMENSIONS OF THE PIN AND RATE OF THE SPRING BEING SUCH THAT THE PIN IS OUT OF CONTACT WITH THE ORIFICE UNDER ALL LOAD CONDITIONS.
Claim 2
Dependent Claim
228 words
FOR USE IN AN ENGINE CRANKCASE VENTILATING SYSTEM WHEREIN A CONDUIT COMMUNICATES BETWEEN THE ENGINE CRANKCASE AND THE AIR INTAKE FOR THE CYLINDERS, A VALVE STRUCTURE ADAPTED TO BE POSITIONED IN THE CONDUIT INCLUDING A VALVE ELEMENT BEING POSITIONED IN THE HOUSING AND IN, THE VALVE ELEMENT BEING POSITIONED IN THE HOUSING AND BEING IN THE FORM OF AN ELONGATED SOLID PIN ADAPTED TO BE DISPOSED NORMALLY IN A GENERALLY UPRIGHT POSITION, THE PIN HAVING A LOWER PORTION WITH A SMALLER EXTERIOR DIMENSION THAN ITS UPPER PORTION, THE BODY OF THE PIN IN BETWEEN THE TWO PORTIONS BEING GENERALLY TAPERED, A SPRING TO BIAS THE PIN AWAY FROM THE ORIFICE AT ALL TIMES, THE AT-REST POSITION OF THE PIN, WHEN THE SPRING IS AT ITS FREE LENGTH, BEING SUCH THAT THE SMALL CROSS SECTION LOWER PORTION OF THE PIN WILL BE GENERALLY WITHIN THE CONFINES AND LATERALLY ALIGNED WITH THE ORIFICE, THE EXTERIOR DIMENSIONS OF BOTH THE UPPER AND LOWER PORTIONS BEING LESS THAN THE INSIDE DIMENSION OF THE ORIFICE, THE FLOW AREA DEFINED BETWEEN THE LOWER PORTION OF THE PIN AND THE ORIFICE BEING SUBSTANTIALLY GREATER THAN THE FLOW AREA DEFINED BETWEEN THE UPPER PORTION OF THE PIN AND THE ORIFICE, THE DIMENSIONS OF THE PIN AND RATE OF THE SPRING BEING SUCH THAT THE PIN IS OUT OF CONTACT WITH THE ORIFICE UNDER ALL LOAD CONDITIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |