US4628878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Splash lubricating system for an engine
Assignee: Kubota Corp
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Filing: 1985-09-30
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Granted: 1986-12-16
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Expires: 2005-09-30
Abstract
Abstract A splash lubricating system for an engine having a crank case, a crank room formed in said crank case, an oil reserving room formed in lower part of said crank case for lubricating oil, and an oil splasher extending from a big end of the connecting rod downward so as to splash about lubricating oil from said reserving room to said crank room on its way from the front side to the back side along the lower part of its orbit, wherein the improvement involves a transverse partition covering over all of said oil reserving room, disposed in the upper space thereof, having an opening which allows said oil splasher to move therein, and three buffer plates covering front, right and left sides of said opening respectively for controlling oil level under them.
Inventors
- 👤 Keiichi Nakano
- 👤 Yoshio Tani
- 👤 Tatsutoshi Umeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:56
CPC Classifications
F; F01; F01M; F01M9/00; F01M9/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
A splash lubrication system for an engine comprising a crank case, a crank room formed in said crank case, an oil reserving room formed in a lower part of said crank case for lubricating oil, and an oil splasher extending from a big end of a connecting rod downward so as to splash oil from said oil reserving room to said crank room on its way from a front side to a back side along the lower part of its orbit, wherein improvement comprises: a transverse partition substantially covering said oil reserving room, disposed at an upper space thereof, having an opening which allows said oil splasher to move therein, and three buffer plates covering front, right and left sides of said opening respectively for controlling oil level thereunder.
Claim 2
Dependent Claim
129 words
A splash lubrication system for an engine comprising a crank case, a crank room formed in said crank case, an oil reserving room formed in a lower part of said crank case for lubricating oil, and an oil splasher extending from a big end of a connecting rod downward so as to splash oil from said oil reserving room to said crank room on its way from a front side to a back side along the lower part of its orbit, wherein improvement comprises: a transverse partition substantially covering said oil reserving room, disposed at an upper space thereof, having an opening which allows said oil splasher to move therein, and three buffer plates covering front, right and left sides of said opening respectively for controlling oil level thereunder.
Claim 3
Dependent Claim
23 words
A splash lubricating system recited in claim 1, wherein: said engine includes a cylinder extruded from the front side of the crank case.
Claim 4
Dependent Claim
61 words
A splash lubricating system recited in claim 1, wherein: said engine is a horizontal engine and a cylinder is extruded from the front side of the crank case horizontally, said transverse partition is cast with the lower peripheral wall of said crank case, said oil reserving room is disposed under the bottom surface of said crank case below said transverse partition.
Claim 5
Dependent Claim
66 words
A splash lubricating system recited in claim 1, wherein: the front end of said transverse partition is located lower and toward the front with respect to the lower periphery of the bottom end of the cylinder, and said transverse partition is provided with a drain hole formed through the buffer plate covering the front side of said opening at the front end of said buffer plate.
Claim 6
Dependent Claim
15 words
A splash lubricating system recited in claim 1 wherein said engine is a horizontal engine.
Claim 7
Dependent Claim
15 words
A splash lubricating system recited in claim 1 wherein said engine is an inclined engine.
Claim 8
Dependent Claim
14 words
A splash lubricating system recited in claim 2 wherein said cylinder is extruded horizontally.
Claim 9
Dependent Claim
19 words
A splash lubricating system recited in claim 2 wherein said cylinder is extruded at an angle to the horizontal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |