US3570629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for the automatic refiling of lubricating oil
Assignee: Daimler Benz AG
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Filing: 1968-10-11
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Granted: 1971-03-16
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Expires: 1988-10-11
Abstract
Abstract An installation for the automatic refilling of lubricating oil from a supply vessel into the oil pan of internal combustion engines in which two floats are secured at a pivotal lever linkage which actuates a needle valve controlling the supply of the oil from the vessel into the pan.
Inventors
- 👤 Wolfram Dahm
- 👤 Erhard Melcher
- 👤 Klaus Nied
- 👤 Alfons Hackenberg
- 👤 Ladislaus Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:21
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/06; F01M11/061; F16; F16N; F16N19/00; F16N19/006; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0898
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
146 words
An installation for the automatic refilling of lubricating oil from a supply tank into the oil pan of internal combustion engines, especially of internal combustion engines built into road vehicles, comprising two floats provided in the oil pan and secured to a common lever at spaced points thereon, said common lever being pivotally attached to said oil pan, and a needle valve connected to said lever for controlling the oil supply from the tank in dependence on the liquid level in the oil pan, whereby, in response to a displacement of said oil in said oil pan, causing a change in the position of one of said floats, said common lever will impart a corresponding change in the position of the other of said floats secured thereto, so as to maintain the position of said floats in said pan constantly fixed with respect to each other.
Claim 2
Dependent Claim
146 words
An installation for the automatic refilling of lubricating oil from a supply tank into the oil pan of internal combustion engines, especially of internal combustion engines built into road vehicles, comprising two floats provided in the oil pan and secured to a common lever at spaced points thereon, said common lever being pivotally attached to said oil pan, and a needle valve connected to said lever for controlling the oil supply from the tank in dependence on the liquid level in the oil pan, whereby, in response to a displacement of said oil in said oil pan, causing a change in the position of one of said floats, said common lever will impart a corresponding change in the position of the other of said floats secured thereto, so as to maintain the position of said floats in said pan constantly fixed with respect to each other.
Claim 3
Dependent Claim
16 words
An installation according to claim 1, further comprising means pivotally securing said lever to said pan.
Claim 4
Dependent Claim
39 words
An installation according to claim 2, wherein the floats are arranged mutually and diagonally spaced with respect to one another and wherein the distances thereof from the two major axes of the oil pan are at least nearly equal.
Claim 5
Dependent Claim
11 words
An installation according to claim 3, wherein said distances are equal.
Claim 6
Dependent Claim
65 words
An installation according to claim 3, wherein said lever has a first portion thereof connected with one of the floats and is constructed as a rectilinearly and continuously extending arm extending up to the pivot axis fixed at the oil pan, and wherein the other float is secured to an additional portion of said lever which is angularly bent with respect to said first portion.
Claim 7
Dependent Claim
20 words
An installation according to claim 5, wherein said needle valve means is secured on a plate fastened to the lever.
Claim 8
Dependent Claim
44 words
An installation according to claim 6, wherein a line from the supply tank to the oil pan includes an inlet provided with a valve seat which is arranged above the needle valve and is secured at the oil pan by way of a mount.
Claim 9
Dependent Claim
37 words
An installation according to claim 1, wherein the floats are arranged mutually diagonally with respect to one another and wherein the distances thereof from the two major axes of the oil pan are at least nearly equal.
Claim 10
Dependent Claim
11 words
An installation according to claim 8, wherein said distances are equal.
Claim 11
Dependent Claim
65 words
An installation according to claim 2, wherein said lever has a first portion thereof connected with one of the floats and is connected as a rectilinearly and continuously extending arm extending up to the pivot axis fixed at the oil pan, and wherein the other float is secured to an additional portion of said lever which is angularly bent with respect to said first portion.
Claim 12
Dependent Claim
19 words
An installation according to claim 1, wherein said needle valve is secured on a plate fastened to the lever.
Claim 13
Dependent Claim
44 words
An installation according to claim 1, wherein a line from the supply tank to the oil pan includes an inlet provided with a valve seat which is arranged above the needle valve and is secured at the oil pan b=y way of a mount.
Claim 14
Dependent Claim
19 words
An installation according to claim 12, wherein said needle valve is secured on a plate fastened to the lever.
Claim 15
Dependent Claim
37 words
An installation according to claim 13, wherein the floats are arranged mutually diagonally with respect to one another and wherein the distances thereof from the two major axes of the oil pan are at least nearly equal.
Claim 16
Dependent Claim
150 words
An installation for the automatic refilling of lubricating oil from a supply tank into the oil pan of internal combustion engines, especially of internal combustion engines built into road vehicles, comprising two floats provided in the oil pan and secured to a lever means at spaced points thereon, said lever means being pivotally attached to said oil pan at a single pivot point, and a needle valve connected to said lever means for controlling the oil supply in dependence on the liquid level in the oil pan, whereby, in response to a displacement of said oil in said oil pan, causing a change in the position of one of said floats, said lever means will impart a corresponding change in the position of the other of said floats secured thereto, so as to maintain the position of said floats in said oil pan, constantly fixed with respect to each other.
Claim 17
Dependent Claim
150 words
An installation for the automatic refilling of lubricating oil from a supply tank into the oil pan of internal combustion engines, especially of internal combustion engines built into road vehicles, comprising two floats provided in the oil pan and secured to a lever means at spaced points thereon, said lever means being pivotally attached to said oil pan at a single pivot point, and a needle valve connected to said lever means for controlling the oil supply in dependence on the liquid level in the oil pan, whereby, in response to a displacement of said oil in said oil pan, causing a change in the position of one of said floats, said lever means will impart a corresponding change in the position of the other of said floats secured thereto, so as to maintain the position of said floats in said oil pan, constantly fixed with respect to each other.
Claim 18
Dependent Claim
39 words
An installation according to claim 15, wherein the floats are arranged mutually and diagonally spaced with respect to one another and wherein the distance thereof from the two major axes of the oil pan are at least nearly equal.
Claim 19
Dependent Claim
67 words
An installation according to claim 16, wherein said lever means has a first portion connected with one of the floats and is constructed as a rectilinearly and continuously extending arm extending up to the pivot axis fixed at the oil pan, and where in the other floats is secured to an additional portion of said lever means which is angularly bent with respect to said first portion.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |