US4117907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for aspiration of lubricating oil from the supply of a combustion engine
Assignee: Audi AG
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Filing: 1976-12-20
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Granted: 1978-10-03
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Expires: 1996-12-20
Abstract
Abstract A device for aspiration of lubricating oil from the supply of a combustion engine that may at times be moved out of a normal position into a different position, in particular an upside-down position, by means of a lubricant pump delivering the oil to the bearing surfaces of the engine.
Inventors
- 👤 Rolf Lechler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/06; F01M11/062; F01M11/065; F01M11/067
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
185 words
A lubrication system for the bearings of a combustion engine moved on occasion from a normal position into a different position, comprising at least two oil supply tanks, one for the supply in the normal position and the at least one other for the supply in the different position, an oil pump having a delivering line for delivering oil to the engine bearings and a suction line connected via a gravity valve with said tanks, said gravity valve having a valve body with a first end position corresponding to said normal position, in which the connection with the tank associated with said normal position is opened and the connection with the other tank is shut off, and a second end position corresponding to said different position in which the connection with the tank associated with said different position is opened and the connection with the other tank is shut off, whereby during the travel of said valve body from one end position to the other the connection with one tank is positively shut off as long as there is a connection with the other tank.
Claim 2
Dependent Claim
185 words
A lubrication system for the bearings of a combustion engine moved on occasion from a normal position into a different position, comprising at least two oil supply tanks, one for the supply in the normal position and the at least one other for the supply in the different position, an oil pump having a delivering line for delivering oil to the engine bearings and a suction line connected via a gravity valve with said tanks, said gravity valve having a valve body with a first end position corresponding to said normal position, in which the connection with the tank associated with said normal position is opened and the connection with the other tank is shut off, and a second end position corresponding to said different position in which the connection with the tank associated with said different position is opened and the connection with the other tank is shut off, whereby during the travel of said valve body from one end position to the other the connection with one tank is positively shut off as long as there is a connection with the other tank.
Claim 3
Dependent Claim
123 words
A lubrication system according to claim 1 wherein said valve body is a slide arranged in a cylindrical bore of a housing, said bore having longitudinally spaced ports connected to the one and the at least one other tank, respectively, and being connected to the suction line of the pump; said slide having a longitudinal bore and a lateral passage slit connecting the outer surface of the slide with the longitudinal bore, said slit communicating the one or the at least one other of said ports with said longitudinal bore in the first or second end position, wherein the distance between said ports is greater than the width of said slit so that said slit is never in communication with both ports simultaneously.
Claim 4
Dependent Claim
37 words
A lubrication system according to claim 1 wherein the one tank accomodating the supply in the normal position is arranged below the engine and the at least one other tank on the opposed side above the engine.
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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |