US3782357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion-engine valve-rocker and valve-stem lubrication circuit
Assignee: SOC ETUDES DE MACHINES THERMIQUES FR
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Filing: 1972-03-03
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Granted: 1974-01-01
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Expires: 1992-03-03
Abstract
Abstract A valve-rocker and valve-stem lubrication circuit for an internal combustion engine provided with cooled valves and a general engine-lubricating circuit, wherein the improvement consists in that said valve-lubricating circuit is completely independent of said general engine-lubrication circuit.
Inventors
- 👤 K Kuhn
- 👤 M Corbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:21
CPC Classifications
F; F01; F01M; F01M9/00; F01M9/10; F01M9/109; F01M11/00; F01M11/10; F01M11/12; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
In an internal combustion engine of the type including valverockers associated with water cooled valves and a general engine lubricating circuit, that improvement comprising a separate valve-rocker and valve-stem lubricating circuit, including a separate oil tank connected in said valve-rocker and valve lubricating circuit, an oil circulating pump in said last-named circuit for pumping oil from said tank to said valve-rockers and water-cooled valves, at least one oil return circuit connected to said valve-rockers and valves and to said tank for returning oil to the latter, a distributing block connected in said second named circuit, a safety flow control valve in said second named circuit, a float operated signalling device in said tank responsive to oil level in said tank to warn of abnormal rise of oil level in said tank, and a further float controlled oil makeup valve in said tank to admit introduction of oil make-up into said tank from an oil supply source.
Claim 2
Dependent Claim
156 words
In an internal combustion engine of the type including valverockers associated with water cooled valves and a general engine lubricating circuit, that improvement comprising a separate valve-rocker and valve-stem lubricating circuit, including a separate oil tank connected in said valve-rocker and valve lubricating circuit, an oil circulating pump in said last-named circuit for pumping oil from said tank to said valve-rockers and water-cooled valves, at least one oil return circuit connected to said valve-rockers and valves and to said tank for returning oil to the latter, a distributing block connected in said second named circuit, a safety flow control valve in said second named circuit, a float operated signalling device in said tank responsive to oil level in said tank to warn of abnormal rise of oil level in said tank, and a further float controlled oil makeup valve in said tank to admit introduction of oil make-up into said tank from an oil supply source.
Claim 3
Dependent Claim
155 words
In an internal combustion engine of the type including valve-rockers associated with water-cooled valves and a general engine lubricating circuit, that improvement comprising a separate valve-rocker and valve-stem lubricating circuit, said last-named circuit comprising an oil tank, an oil circulating pump, and an oil supplying circuit for supplying oil from said tank to said valve-rocker and said water-cooled valves, at least one oil return circuit connecting said valve-rockers and water-cooled valves to said tank, means for selectively isolating said tank from said general engine lubricating circuit, automatic means for oil make-up in said tank, and a signal device warning of any water infiltration into said valve-rocker and valve-stem lubricating circuit, said signal device being mounted on said tank and comprising means for detecting the oil level in said tank and an electric contact provided with a float responsive to a rise of the oil level in said tank as a result of water infiltration thereto.
Claim 4
Dependent Claim
155 words
In an internal combustion engine of the type including valve-rockers associated with water-cooled valves and a general engine lubricating circuit, that improvement comprising a separate valve-rocker and valve-stem lubricating circuit, said last-named circuit comprising an oil tank, an oil circulating pump, and an oil supplying circuit for supplying oil from said tank to said valve-rocker and said water-cooled valves, at least one oil return circuit connecting said valve-rockers and water-cooled valves to said tank, means for selectively isolating said tank from said general engine lubricating circuit, automatic means for oil make-up in said tank, and a signal device warning of any water infiltration into said valve-rocker and valve-stem lubricating circuit, said signal device being mounted on said tank and comprising means for detecting the oil level in said tank and an electric contact provided with a float responsive to a rise of the oil level in said tank as a result of water infiltration thereto.
References Cited (Backward Citations)
US1695348A
Cited
US1563493A
Cited
US1935496A
Cited
US2149898A
Cited
US2716165A
Cited
US2717990A
Cited
US3335736A
Cited
US3670319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |