Patent US4929575A successfully refreshed from Google Patents.
Patent US3105471A successfully refreshed from Google Patents.
US3105471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purge system for blow-by return valve
Assignee: California Research LLC
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Filing: 1962-06-01
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Granted: 1963-10-01
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Jr John Hugh Macpherson
- 👤 James O Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
APARATUS FOR ASSURING CONTINUED OPERATION OF A PRESSURE-RESPONSIVE CHECK VALVE ALL OF WHOSE RECIPROCATING ELEMENTS ARE DIRECTLY IN THE FLOW PATH OF A BLOW-BY RETURN LINE THAT CONNECTS A CRANKCASE BREATHER PIPE TO THE INTAKE SYSTEM OF AN INTERNAL-COMBUSTION SPARK-IGNITION ENGINE WHICH COMPRISES MEANS FOR SPRAYING LIQUID GASOLINE DIRECTLY ON SAID RECIPROCATING ELEMENTS OF SAID CONTROL VALVE, SAID SPRAY MEANS INCLUDING A SPRAY JET IN SAID RETURN LINE AND CONDUIT MEANS CONNECTING SAID SPARY JET TO A SUPPLY OF LIQUID GASOLINE, AND MEANS FOR AT LEAST INTERMITTENTLY INJECTING LIQUID GASOLINE INTO SAID CONDUIT, SAID INJECTING MEANS BEING OPERATIVE INDEPENDENTLY OF THE VAPOR FLOW RATE THROUGH SAID RETURN LINE WHEREBY SAID RECIPROCATING ELEMENTS OF SAID VALVE ARE WASHED TO REMOVE OIL AND CARBON DEPOSITS THEREFROM THAT WOULD INACTIVATE SAID CHECK VALVE.
Claim 2
Dependent Claim
130 words
APARATUS FOR ASSURING CONTINUED OPERATION OF A PRESSURE-RESPONSIVE CHECK VALVE ALL OF WHOSE RECIPROCATING ELEMENTS ARE DIRECTLY IN THE FLOW PATH OF A BLOW-BY RETURN LINE THAT CONNECTS A CRANKCASE BREATHER PIPE TO THE INTAKE SYSTEM OF AN INTERNAL-COMBUSTION SPARK-IGNITION ENGINE WHICH COMPRISES MEANS FOR SPRAYING LIQUID GASOLINE DIRECTLY ON SAID RECIPROCATING ELEMENTS OF SAID CONTROL VALVE, SAID SPRAY MEANS INCLUDING A SPRAY JET IN SAID RETURN LINE AND CONDUIT MEANS CONNECTING SAID SPARY JET TO A SUPPLY OF LIQUID GASOLINE, AND MEANS FOR AT LEAST INTERMITTENTLY INJECTING LIQUID GASOLINE INTO SAID CONDUIT, SAID INJECTING MEANS BEING OPERATIVE INDEPENDENTLY OF THE VAPOR FLOW RATE THROUGH SAID RETURN LINE WHEREBY SAID RECIPROCATING ELEMENTS OF SAID VALVE ARE WASHED TO REMOVE OIL AND CARBON DEPOSITS THEREFROM THAT WOULD INACTIVATE SAID CHECK VALVE.
References Cited (Backward Citations)
US2080588A
Cited
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 |