US4559910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankshaft bearing device for internal combustion engine
Assignee: Honda Motor Co Ltd
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Filing: 1983-11-21
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Granted: 1985-12-24
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Expires: 2003-11-21
Abstract
Abstract The crankshaft of an internal combustion engine is supported in a split bearing assembly near one end of the crankshaft, with the lower half of the bearing assembly formed in a bearing holder secured to the engine block. An arcuate flange projects axially towards that end of the crankshaft. The flange underlies a crankshaft pulley which drives a timing belt. The arcuate surface of the flange is struck from a center offset from the crankshaft axis in order to provide clearance for the timing belt. The offset construction also improves the joint seal between the oil pan and the engine block.
Inventors
- 👤 Tadashi Tsuchiyama
- 👤 Yoshiaki Hidaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:40
CPC Classifications
F; F16; F16C; F16C9/00; F16C9/02; F01; F01M; F01M1/00; F01M1/06; F02; F02F; F02F7/00; F02F7/0043; F02F7/0053; F02B; F02B2275/00; F02B2275/34; F02B75/00; F02B75/16; F02B75/18; F02B75/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
In an internal combustion engine having a crankshaft, and having a camshaft pulley driven from a crankshaft pulley by means of a timing belt having one side extending directly to the camshaft pulley and other side extending obliquely at a substantial angle to the one side, the improvement comprising, in combination: a cylinder block having a split bearing for supporting the crankshaft near one end thereof, said split bearing including a semicircular bearing holder secured to said cylinder block, said bearing holder having a flange projecting axially of the crankshaft toward said end thereof and underlying a portion of the crankshaft pulley, said flange having an arcuate portion struck from a location offcenter from the axis of the crankshaft to provide clearance for the obliquely extending side of the timing belt extending from said crankshaft pulley.
Claim 2
Dependent Claim
136 words
In an internal combustion engine having a crankshaft, and having a camshaft pulley driven from a crankshaft pulley by means of a timing belt having one side extending directly to the camshaft pulley and other side extending obliquely at a substantial angle to the one side, the improvement comprising, in combination: a cylinder block having a split bearing for supporting the crankshaft near one end thereof, said split bearing including a semicircular bearing holder secured to said cylinder block, said bearing holder having a flange projecting axially of the crankshaft toward said end thereof and underlying a portion of the crankshaft pulley, said flange having an arcuate portion struck from a location offcenter from the axis of the crankshaft to provide clearance for the obliquely extending side of the timing belt extending from said crankshaft pulley.
Claim 3
Dependent Claim
166 words
In an internal combustion engine having a crankshaft, and having a camshaft pulley driven from a crankshaft pulley by means of a timing belt having one side extending directly to the camshaft pulley and other side extending obliquely at a substantial angle to the one side, the improvement comprising, in combination: an auxiliary machinery pulley also driven by said timing belt directly from the crankshaft pulley by the obliquely extending side of said timing belt, a cylinder block having a split bearing for supporting the crankshaft near one end thereof, said split bearing including a semicircular bearing holder secured to said cylinder block, said bearing holder having a flange projecting axially at the crankshaft toward said end thereof and underlying a portion of the crankshaft pulley, said flange having an arcuate portion struck from a location offcenter from the axis of the crankshaft to provide clearance for that said other side of the timing belt extending obliquely between said crankshaft pulley and said auxiliary machinery pulley.
Claim 4
Dependent Claim
166 words
In an internal combustion engine having a crankshaft, and having a camshaft pulley driven from a crankshaft pulley by means of a timing belt having one side extending directly to the camshaft pulley and other side extending obliquely at a substantial angle to the one side, the improvement comprising, in combination: an auxiliary machinery pulley also driven by said timing belt directly from the crankshaft pulley by the obliquely extending side of said timing belt, a cylinder block having a split bearing for supporting the crankshaft near one end thereof, said split bearing including a semicircular bearing holder secured to said cylinder block, said bearing holder having a flange projecting axially at the crankshaft toward said end thereof and underlying a portion of the crankshaft pulley, said flange having an arcuate portion struck from a location offcenter from the axis of the crankshaft to provide clearance for that said other side of the timing belt extending obliquely between said crankshaft pulley and said auxiliary machinery pulley.
Claim 5
Dependent Claim
186 words
In an internal combustion engine having a crankshaft, and having a camshaft pulley driven from a crankshaft pulley by means of a timing belt having one side extending directly to the camshaft pulley and other side extending obliquely at a substantial angle to the one side, the improvement comprising, in combination: an auxiliary machinery pulley also driven by said timing belt directly from the crankshaft pulley by the obliquely extending side of said timing belt, a cylinder block having a split bearing for supporting the crankshaft near one end thereof, said split bearing including a semicircular bearing holder secured to said cylinder block, said bearing holder having a flange projecting axially of the crankshaft toward said end thereof, said flange having an arcuate portion struck from a location offcenter from the axis of the crankshaft to provide clearance for that said other side of the timing belt extending obliquely between said crankshaft pulley and said auxiliary machinery pulley, said flange underlying a portion of said crankshaft pulley, and an oil pan having a peripheral lip and a sealing element interposed between said flange and said slip.
Claim 6
Dependent Claim
186 words
In an internal combustion engine having a crankshaft, and having a camshaft pulley driven from a crankshaft pulley by means of a timing belt having one side extending directly to the camshaft pulley and other side extending obliquely at a substantial angle to the one side, the improvement comprising, in combination: an auxiliary machinery pulley also driven by said timing belt directly from the crankshaft pulley by the obliquely extending side of said timing belt, a cylinder block having a split bearing for supporting the crankshaft near one end thereof, said split bearing including a semicircular bearing holder secured to said cylinder block, said bearing holder having a flange projecting axially of the crankshaft toward said end thereof, said flange having an arcuate portion struck from a location offcenter from the axis of the crankshaft to provide clearance for that said other side of the timing belt extending obliquely between said crankshaft pulley and said auxiliary machinery pulley, said flange underlying a portion of said crankshaft pulley, and an oil pan having a peripheral lip and a sealing element interposed between said flange and said slip.
References Cited (Backward Citations)
US1624738A
Cited
US2085810A
Cited
US3863617A
Cited
US3955654A
Cited
GB2030647A
Cited
US4294203A
Cited
US4448159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |