US4462350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication apparatus in internal combustion engine
Assignee: Honda Motor Co Ltd
•
Filing: 1982-09-27
•
Granted: 1984-07-31
•
Expires: 2002-09-27
Abstract
Abstract A lubrication apparatus for an internal combustion engine is provided which has a crank chamber with an oil pan detachably mounted on the lower surface of the crank chamber. An oil pump and an oil filter are coupled together by an oil passage in the crank chamber. A relief valve is provided in the oil passage, the relief valve being opened by an oil pressure above a predetermined value. The oil passage includes an opening directed towards the oil pan and the oil pan includes a rib formed on the upper surface thereof, wherein the relief valve is inserted in the opening and is supported therein by the rib.
Inventors
- 👤 Noboru Kurata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:37
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/10; F01M11/00; F01M11/02; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B61/00; F02B61/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A lubrication apparatus in an internal combustion engine having a crank chamber comprising: (a) an oil pan detachably mounted on the lower surface of said crank chamber; (b) an oil pump having an oil intake opening; (c) an oil filter; (d) oil passage means provided in said crank chamber coupling said oil filter and said oil pump; and (e) a relief valve provided in said oil passage means, said relief valve being opened by an oil pressure above a predetermined value, wherein said oil passage means includes an opening directed towards the oil pan, and said oil pan includes support means, and wherein said relief valve is inserted in said opening and is fixedly supported therein by being clamped between said support means of said oil pan and said oil passage means.
Claim 2
Dependent Claim
132 words
A lubrication apparatus in an internal combustion engine having a crank chamber comprising: (a) an oil pan detachably mounted on the lower surface of said crank chamber; (b) an oil pump having an oil intake opening; (c) an oil filter; (d) oil passage means provided in said crank chamber coupling said oil filter and said oil pump; and (e) a relief valve provided in said oil passage means, said relief valve being opened by an oil pressure above a predetermined value, wherein said oil passage means includes an opening directed towards the oil pan, and said oil pan includes support means, and wherein said relief valve is inserted in said opening and is fixedly supported therein by being clamped between said support means of said oil pan and said oil passage means.
Claim 3
Dependent Claim
21 words
An apparatus of claim 1, wherein said support means comprises a rib formed on the upper surface of said oil pan.
Claim 4
Dependent Claim
67 words
An apparatus of claim 1, wherein said oil passage means comprises a tube extending between said oil pump and said oil filter and wherein said apparatus further includes an oil filter screen covering the open end portion of the oil intake opening, said tube and said oil filter screen being fixedly supported by being clamped between said oil pan and the remainder of said oil passage means.
Claim 5
Dependent Claim
35 words
An apparatus of claim 3, wherein said oil pan has a pair of upstanding ribs therein and said tube is clamped between said pair of upstanding ribs and the remainder of said oil passage means.
Claim 6
Dependent Claim
29 words
An apparatus of claim 2, wherein said rib is an upstanding rib and said relief valve is clamped between a top of said rib and said oil passage means.
References Cited (Backward Citations)
US1203290A
Cited
US2550967A
Cited
FR1241420A
Cited
US3143187A
Cited
US3465847A
Cited
US3425511A
Cited
US3485324A
Cited
US3590953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |