Patent US2712183A successfully refreshed from Google Patents.
US4862981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine and devices employing same
Assignee: Kawasaki Motors Ltd
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Filing: 1987-07-08
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Granted: 1989-09-05
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Expires: 2007-07-08
Abstract
Abstract An engine and power units employing the engine are provided which include a crankshaft oriented vertically and operatively connected to the engine, a liquid-cooled radiator arranged above the engine substantially perpendicular to the crankshaft, and a cooling fan interposed between the engine and the radiator and operatively connected to the crankshaft. The engines and power units may be employed in motor vehicles and other equipment such as electrical generators.
Inventors
- 👤 Tetsuzo Fujikawa
- 👤 Keisuke Tomonaga
- 👤 Shinichi Tamba
- 👤 Hitomi Miyake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:12
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/007; B; B60; B60K; B60K11/00; B60K5/00; B60K5/10; F01; F01P; F01P3/00; F01P3/18; F02B1/00; F02B1/02; F02B1/04; F02B75/02; F02B2075/022; F02B2075/027; F02B75/16; F02B75/18; F02B75/22; F02F; F02F7/00; F02F7/006; Y; Y10; Y10S; Y10S180/00; Y10S180/90
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
42 words
A power unit comprising: an engine; a vertically oriented crankshaft operatively connected to said engine; a radiator, operatively positioned above and substantially perpendicular to said crankshaft; and a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator.
Claim 2
Dependent Claim
42 words
A power unit comprising: an engine; a vertically oriented crankshaft operatively connected to said engine; a radiator, operatively positioned above and substantially perpendicular to said crankshaft; and a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator.
Claim 3
Dependent Claim
14 words
The power unit according to claim 1 wherein said engine is of a V-type.
Claim 4
Dependent Claim
42 words
A power unit comprising: an engine; a vertically oriented crankshaft driven by said engine; a radiator located in the vicinity of and supported by said engine; and a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator.
Claim 5
Dependent Claim
42 words
A power unit comprising: an engine; a vertically oriented crankshaft driven by said engine; a radiator located in the vicinity of and supported by said engine; and a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator.
Claim 6
Dependent Claim
14 words
The power unit according to claim 3 wherein said engine is of a V-type.
Claim 7
Dependent Claim
20 words
The power unit according to claim 1, further comprising an air exhaust duct interposed between said radiator and said engine.
Claim 8
Dependent Claim
24 words
The power unit according to claim 5 wherein said air exhaust duct further includes a fan shroud formed integrally with the air exhaust duct.
Claim 9
Dependent Claim
25 words
The power unit according to claim 5 wherein said air exhaust duct has at least one outlet port facing radially outwardly of a horizontal plane.
Claim 10
Dependent Claim
24 words
The power unit according to claim 5 wherein said air exhaust duct comprises an upper duct portion operatively connected to a lower duct portion.
Claim 11
Dependent Claim
23 words
The power unit according to claim 5 wherein said air exhaust duct includes a carburetion air cleaner formed integrally with said exhaust duct.
Claim 12
Dependent Claim
56 words
A motor vehicle having an engine enclosure comprising: a crankshaft oriented vertically; an engine driving said crankshaft; a liquid-cooled radiator positioned above and supported by said engine substantially perpendicular to said crankshaft in a space defined by said enclosure; and a cooling fan interposed between said engine and said radiator and directly connected to said crankshaft.
Claim 13
Dependent Claim
56 words
A motor vehicle having an engine enclosure comprising: a crankshaft oriented vertically; an engine driving said crankshaft; a liquid-cooled radiator positioned above and supported by said engine substantially perpendicular to said crankshaft in a space defined by said enclosure; and a cooling fan interposed between said engine and said radiator and directly connected to said crankshaft.
Claim 14
Dependent Claim
14 words
A motor vehicle according to claim 10 wherein said engine is of a V-type.
Claim 15
Dependent Claim
61 words
A motor vehicle according to claim 10 wherein said enclosure has a top wall, a front wall and side walls and cooling air currents for cooling said radiator are introduced into the space defined by the enclosure through one of said walls of the enclosure and released into the atmosphere through said front wall of the enclosure after cooling the radiator.
Claim 16
Dependent Claim
58 words
The motor vehicle of claim 10 further comprising exhaust means, operatively connected to said radiator and said engine, for directing air pulled by said fan through said radiator toward the bottom of said enclosure and outside said enclosure such that the force created by said directed air reduces the amount of debris entering said enclosure from said bottom.
Claim 17
Dependent Claim
80 words
A motor vehicle having an engine enclosure comprising: a crankshaft oriented vertically; an engine driving said crankshaft; a liquid-cooled radiator positioned above and supported by said engine substantially perpendicular to said crankshaft in a space defined by said enclosure; a cooling fan interposed between said engine and said radiator and directly connected to said crankshaft; and an air exhaust duct for guiding warm air emanating from the vicinity of said radiator away from the engine, without coming in contact therewith.
Claim 18
Dependent Claim
80 words
A motor vehicle having an engine enclosure comprising: a crankshaft oriented vertically; an engine driving said crankshaft; a liquid-cooled radiator positioned above and supported by said engine substantially perpendicular to said crankshaft in a space defined by said enclosure; a cooling fan interposed between said engine and said radiator and directly connected to said crankshaft; and an air exhaust duct for guiding warm air emanating from the vicinity of said radiator away from the engine, without coming in contact therewith.
Claim 19
Dependent Claim
80 words
A motor vehicle as claimed in claim 14 wherein said air exhaust duct is split into an upper duct portion and a lower duct portion, and further comprising a carburetion air cleaner split into an upper case portion and a lower case portion, said lower case portion of said cleaner being formed integrally with the upper duct portion of said air exhaust duct, and a suction passageway extending from said air cleaner to said engine through said air exhaust duct.
Claim 20
Dependent Claim
18 words
A motor vehicle as claimed in claim 14 comprising a fan shroud formed integrally with the exhaust duct.
Claim 21
Dependent Claim
25 words
A motor vehicle as claimed in claim 16 wherein said air exhaust duct comprises an upper duct portion operatively connected to a lower duct portion.
Claim 22
Dependent Claim
22 words
The power unit according to claim 1 wherein said cooling fan is mounted on the end of said crankshaft adjacent said radiator.
Claim 23
Dependent Claim
22 words
The power unit according to claim 3 wherein said cooling fan is mounted on the end of said crankshaft adjacent said radiator.
Claim 24
Dependent Claim
60 words
A power unit comprising: an engine; a vertically oriented crankshaft operatively connected to said engine; a radiator, operatively positioned above and substantially perpendicular to said crankshaft; a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator; and means, operatively connected to said engine and said radiator, for supporting said radiator in position above said engine.
Claim 25
Dependent Claim
60 words
A power unit comprising: an engine; a vertically oriented crankshaft operatively connected to said engine; a radiator, operatively positioned above and substantially perpendicular to said crankshaft; a cooling fan, operatively connected to said crankshaft, interposed between said engine and said radiator; and means, operatively connected to said engine and said radiator, for supporting said radiator in position above said engine.
Claim 26
Dependent Claim
29 words
The power unit according to claim 20, further comprising enclosure means having air inlet and exhaust means formed therein for housing said engine, said radiator, and said cooling fan.
Claim 27
Dependent Claim
43 words
The motor vehicle according to claim 17 wherein said enclosure includes top, front, and side walls and said upper and lower duct portions are defined by said enclosure and a partition which extends between said fan shroud and the walls of said enclosure.
Claim 28
Dependent Claim
48 words
The motor vehicle according to claim 22 wherein said partition includes a front partition portion extending horizontally between said fan shroud and said front wall of said enclosure and a rear partition portion extending rearwardly and upwardly between said fan shroud and said top wall of said enclosure.
Claim 29
Dependent Claim
30 words
The power unit according to claim 20 wherein said supporting means comprises at least two brackets, each having one end thereof operatively connected to said engine and to said radiator.
Claim 30
Dependent Claim
22 words
The power unit according to claim 20 wherein at least four brackets are utilized to operatively connect said engine to said radiator.
Claim 31
Dependent Claim
29 words
The power unit according to claim 1 further comprising enclosure means having an inlet and exhaust means formed therein for housing said engine, said radiator, and said cooling fan.
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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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |