Patent US5257674A successfully refreshed from Google Patents.
US5257674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine construction for vehicle
Assignee: Yamaha Motor Co Ltd
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Filing: 1993-02-16
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Granted: 1993-11-02
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Expires: 2013-02-16
Abstract
Abstract A vehicle and drive unit therefor including a transversely disposed engine located in an engine compartment. The engine is of the dry sump lubrication type and has a lubricant reservoir that extends between the cylinders and an air inlet opening to the engine compartment. The cylinders are inclined to the rear from a vertical plane at an acute angle and the engine crankshaft drives an output shaft that rotates in a plane disposed at an acute angle to the vertical and forwardly of the cylinder axis and at an acute angle to the cylinder axis. The oil scavenge and pressure pumps are driven from this shaft as are the front wheel axles which lie on the opposite side of the plane containing the cylinder axis from the output shaft axis.
Inventors
- 👤 Kaoru Okui
- 👤 Manabu Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:30
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F02B67/00; F02B67/04; F02B67/06; F01; F01M; F01M1/00; F01M1/12; F01M2001/126; F02B2075/1804; F02B2075/1824; F02B2275/00; F02B2275/18; F02B61/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
In a motor vehicle having an engine compartment with a pair of driven axle shafts journaled for rotation about a first axis disposed transversely of said engine compartment, an in-line internal combustion engine having a plurality of aligned cylinders extending transversely across said engine compartment and driving a crankshaft rotatable about a second axis extending transversely across said engine compartment and parallel to said first axis, said cylinders extending upwardly from said crankshaft axis and being inclined from the vertical, and an output shaft rotatable about a third axis parallel to said first and said second axes and driven by said crankshaft, said second and said third axes lying in a plane inclined to the vertical and at an acute angle to a plane containing the bores of said cylinders and the second axis.
Claim 2
Dependent Claim
134 words
In a motor vehicle having an engine compartment with a pair of driven axle shafts journaled for rotation about a first axis disposed transversely of said engine compartment, an in-line internal combustion engine having a plurality of aligned cylinders extending transversely across said engine compartment and driving a crankshaft rotatable about a second axis extending transversely across said engine compartment and parallel to said first axis, said cylinders extending upwardly from said crankshaft axis and being inclined from the vertical, and an output shaft rotatable about a third axis parallel to said first and said second axes and driven by said crankshaft, said second and said third axes lying in a plane inclined to the vertical and at an acute angle to a plane containing the bores of said cylinders and the second axis.
Claim 3
Dependent Claim
39 words
In a motor vehicle as set forth in claim 1 wherein the plane containing the second and third axes is inclined in a different direction from the vertical than the plane containing the cylinder bores and the second axis.
Claim 4
Dependent Claim
24 words
In a motor vehicle as set forth in claim 1 further including a primary transmission shaft driven by the output shaft and coaxial therewith.
Claim 5
Dependent Claim
67 words
In a motor vehicle as set forth in claim 3 further including a secondary transmission shaft driven by said primary transmission shaft by a plurality of change speed gears, said secondary transmission shaft being disposed in an area between the plane containing the cylinder bore axes and the plane containing the second and third axes, and means for driving the axle shafts from said secondary transmission shaft.
Claim 6
Dependent Claim
22 words
In a motor vehicle as set forth in claim 4 wherein the engine compartment is positioned at the front of the vehicle.
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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) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |