Patent US4638340A successfully refreshed from Google Patents.
Patent US5063897A successfully refreshed from Google Patents.
US5063897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accessory drive arrangement for engine
Assignee: Yamaha Motor Co Ltd
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Filing: 1990-07-05
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Granted: 1991-11-12
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Expires: 2010-07-05
Abstract
Abstract A vehicle and drive unit therefor including a transversely disposed engine located in an engine compartment. The cylinders are inclined to the rear from a vertical plane at an acute angle and the engine crankshaft drives an accessory 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. Accessories are driven from this accessory 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. The accessory drive is disposed inwardly of the ends of the engine so as to provide a compact body and the engine body is recessed to receive the accessory drive so as to minimize the distance between the accessory shaft and the engine crankshaft.
Inventors
- 👤 Kaoru Okui
- 👤 Manabu Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:38
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F01; F01L; F01L1/00; F01L1/02; F01L1/022; F02B67/00; F02B67/04; F02B67/06; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F1/4221; F01L1/026; F01L1/04; F01L1/047; F01L1/053; F01L2001/0537; F01M; F01M1/00; F01M1/12; F01M2001/126; F02B1/00; F02B1/02; F02B1/04; F02B2075/1804; F02B2075/1824; F02B2275/00; F02B2275/18; F02B61/00; F02F2001/244; F02F2001/245; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
108 words
An internal combustion engine for a motor vehicle, said having an engine body rotatably journaling an output shaft, an accessory shaft driven by said engine output shaft internally of said engine body and between the end of said output shaft and having a portion exposed externally of said engine body, and an accessory drive affixed to said exposed accessory shaft portion at a longitudinal point of the engine between the ends of the engine output shaft for driving an accessory external of said engine body, and a transmission for said motor vehicle driven from the end of said accessory shaft opposite to where said accessory drive is positioned.
Claim 2
Dependent Claim
108 words
An internal combustion engine for a motor vehicle, said having an engine body rotatably journaling an output shaft, an accessory shaft driven by said engine output shaft internally of said engine body and between the end of said output shaft and having a portion exposed externally of said engine body, and an accessory drive affixed to said exposed accessory shaft portion at a longitudinal point of the engine between the ends of the engine output shaft for driving an accessory external of said engine body, and a transmission for said motor vehicle driven from the end of said accessory shaft opposite to where said accessory drive is positioned.
Claim 3
Dependent Claim
29 words
An internal combustion engine as set forth in claim 1 wherein the engine has a plurality of aligned cylinders transversely disposed within an engine compartment of the motor vehicle.
Claim 4
Dependent Claim
23 words
An internal combustion engine as set forth in claim 2 wherein the cylinders are inclined rearwardly from the vertical at an acute angle.
Claim 5
Dependent Claim
20 words
An internal combustion engine as set forth in claim 3 wherein the accessory shaft is positioned forwardly of the cylinders.
Claim 6
Dependent Claim
31 words
An internal combustion engine as set forth in claim 4 wherein the accessory driven by the accessory drive is an accessory that is not required by the engine for its operation.
Claim 7
Dependent Claim
95 words
An internal combustion engine for a motor vehicle, said engine having an engine body rotatably journaling an output shaft, an accessory shaft driven by said engine output shaft and having a portion exposed externally of said engine body an accessory drive affixed to said exposed accessory shaft portion at a longitudinal point of the engine between the ends of the engine output shaft for driving an accessory external of said engine body, and a transmission for said motor vehicle driven from the end of said accessory shaft opposite to where said accessory drive is positioned.
Claim 8
Dependent Claim
95 words
An internal combustion engine for a motor vehicle, said engine having an engine body rotatably journaling an output shaft, an accessory shaft driven by said engine output shaft and having a portion exposed externally of said engine body an accessory drive affixed to said exposed accessory shaft portion at a longitudinal point of the engine between the ends of the engine output shaft for driving an accessory external of said engine body, and a transmission for said motor vehicle driven from the end of said accessory shaft opposite to where said accessory drive is positioned.
Claim 9
Dependent Claim
29 words
An internal combustion engine as set forth in claim 6 wherein the engine has a plurality of aligned cylinders transversely disposed within an engine compartment of the motor vehicle.
Claim 10
Dependent Claim
23 words
An internal combustion engine as set forth in claim 7 wherein the cylinders are inclined rearwardly from the vertical at an acute angle.
Claim 11
Dependent Claim
20 words
An internal combustion engine as set forth in claim 8 wherein the accessory shaft is positioned forwardly of the cylinders.
Claim 12
Dependent Claim
31 words
An internal combustion engine as set forth in claim 9 wherein the accessory driven by the accessory drive is an accessory that is not required by the engine for its operation.
Claim 13
Dependent Claim
31 words
An internal combustion engine as set forth in claim 10 wherein the accessory driven by the accessory drive is an accessory that is not required by the engine for its operation.
Claim 14
Dependent Claim
29 words
An internal combustion engine as set forth in claim 11 wherein accessory drive shaft is driven by the engine output shaft between the ends of the engine output shaft.
Claim 15
Dependent Claim
25 words
An internal combustion engine as set forth in claim 11 wherein the engine has a plurality of aligned cylinders transversely disposed within the engine compartment.
Claim 16
Dependent Claim
23 words
An internal combustion engine as set forth in claim 13 wherein the cylinders are inclined rearwardly from the vertical at an acute angle.
Claim 17
Dependent Claim
20 words
An internal combustion engine as set forth in claim 14 wherein the accessory shaft is positioned forwardly of the cylinders.
Claim 18
Dependent Claim
142 words
An internal combustion engine having an engine body, a plurality of aligned cylinders and a crankshaft driven from pistons slidably supported within said cylinders, said crankshaft having a plurality of longitudinally spaced bearings for rotatably journaling said output shaft, said engine body including a crankcase in which said crankshaft is rotatably journaled, an accessory shaft driven by said crankshaft and having a portion exposed externally of said engine body, and an accessory drive affixed to said exposed accessory shaft portion at a longitudinal point of the engine between the ends said crankshaft for driving an accessory external of said engine body, said accessory drive being positioned adjacent one of said crankshaft journals said crankcase having a recess formed adjacent said one crankshaft journal for clearance for said accessory drive so as to minimize the distance between the accessory shaft and said crankshaft.
Claim 19
Dependent Claim
142 words
An internal combustion engine having an engine body, a plurality of aligned cylinders and a crankshaft driven from pistons slidably supported within said cylinders, said crankshaft having a plurality of longitudinally spaced bearings for rotatably journaling said output shaft, said engine body including a crankcase in which said crankshaft is rotatably journaled, an accessory shaft driven by said crankshaft and having a portion exposed externally of said engine body, and an accessory drive affixed to said exposed accessory shaft portion at a longitudinal point of the engine between the ends said crankshaft for driving an accessory external of said engine body, said accessory drive being positioned adjacent one of said crankshaft journals said crankcase having a recess formed adjacent said one crankshaft journal for clearance for said accessory drive so as to minimize the distance between the accessory shaft and said crankshaft.
Claim 20
Dependent Claim
24 words
An internal combustion engine as set forth in claim 16 wherein the bearing adjacent the accessory drive is an end bearing of the crankshaft.
Claim 21
Dependent Claim
24 words
An internal combustion engine as set forth in claim 16 wherein the bearing adjacent the accessory drive comprises an intermediate bearing of the crankshaft.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |