US5317936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission structure of a working car
Assignee: Kanzaki Kokyukoki Manufacturing Co Ltd
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Filing: 1992-09-18
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Granted: 1994-06-07
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Expires: 2012-09-18
Abstract
Abstract A power transmission structure for a working car provided at the center thereof with a working machine, such as a mower. Power is transmitted by the simplest mechanism from a vertical engine to axles and the working machine. Two output pulleys are attached to a vertical rotary output shaft of the vertical engine. One pulley drives a pump shaft of an axle driving unit and the other pulley drives an input pulley of the working machine. A hydraulic power transmission and a differential gear are laterally eccentrically disposed within the axle driving unit. The hydraulic transmission comprises a hydraulic pump and a hydraulic motor. Power is transmitted from the rotary output shaft of the vertical engine to a vertical pump shaft of the hydraulic pump. A motor shaft of the hydraulic motor is operatively connected to the differential gear.
Inventors
- 👤 Kenji Shiba
- 👤 Hideaki Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:36
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; B60K17/105; B60K17/16; B60K17/165; B60T; B60T1/00; B60T1/005; B60Y; B60Y2200/00; B60Y2200/20; B60Y2200/22; B60Y2200/223; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
229 words
A power transmission for a vehicle, comprising: an axle casing; an axle disposed within said axle casing; an engine having a vertical output shaft, said vertical output shaft disposed perpendicular to a central longitudinal axis of said vehicle; a hydraulic transmission disposed within said axle casing and operatively connected to said axle through a differential gear, said hydraulic transmission including a pump shaft parallel to said vertical output shaft, said differential gear disposed on one side of said axis and said pump shaft disposed on a side of said axis opposite said one side; first and second output pulleys drivingly connected to said vertical output shaft; a transmission input pulley drivingly connected to said pump shaft; a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said transmission input pulley; a driven apparatus attached to said vehicle; a driven apparatus input pulley drivingly connected to said driven apparatus; a belt drivingly engaged with said second output pulley and said driven apparatus input pulley so that said second output pulley drives said driven apparatus input pulley; wherein said axle casing includes a portion for housing said differential gear which extends from a portion for housing said axle; and wherein said first and second output pulleys are disposed to one side and above said portion for housing said differential gear.
Claim 2
Dependent Claim
229 words
A power transmission for a vehicle, comprising: an axle casing; an axle disposed within said axle casing; an engine having a vertical output shaft, said vertical output shaft disposed perpendicular to a central longitudinal axis of said vehicle; a hydraulic transmission disposed within said axle casing and operatively connected to said axle through a differential gear, said hydraulic transmission including a pump shaft parallel to said vertical output shaft, said differential gear disposed on one side of said axis and said pump shaft disposed on a side of said axis opposite said one side; first and second output pulleys drivingly connected to said vertical output shaft; a transmission input pulley drivingly connected to said pump shaft; a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said transmission input pulley; a driven apparatus attached to said vehicle; a driven apparatus input pulley drivingly connected to said driven apparatus; a belt drivingly engaged with said second output pulley and said driven apparatus input pulley so that said second output pulley drives said driven apparatus input pulley; wherein said axle casing includes a portion for housing said differential gear which extends from a portion for housing said axle; and wherein said first and second output pulleys are disposed to one side and above said portion for housing said differential gear.
Claim 3
Dependent Claim
116 words
A power transmission for a vehicle, comprising: an axle casing; an axle disposed within said axle casing; an engine having an output shaft; a hydraulic transmission disposed within said axle casing and operatively connected to said axle through a differential gear, said hydraulic transmission including a pump shaft parallel to said output shaft; wherein said engine is disposed on the same transverse half of said vehicle as said hydraulic transmission; a first output pulley drivingly connected to said pump shaft; a transmission input pulley drivingly connected to said pump shaft; and a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said transmission input pulley.
Claim 4
Dependent Claim
116 words
A power transmission for a vehicle, comprising: an axle casing; an axle disposed within said axle casing; an engine having an output shaft; a hydraulic transmission disposed within said axle casing and operatively connected to said axle through a differential gear, said hydraulic transmission including a pump shaft parallel to said output shaft; wherein said engine is disposed on the same transverse half of said vehicle as said hydraulic transmission; a first output pulley drivingly connected to said pump shaft; a transmission input pulley drivingly connected to said pump shaft; and a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said transmission input pulley.
Claim 5
Dependent Claim
47 words
A power transmission according to claim 2, wherein: said axle casing includes a portion for housing said differential gear which extends from a portion for housing said axle; and said first output pulley is disposed to one side and above said portion for housing said differential gear.
Claim 6
Dependent Claim
65 words
A power transmission according to claim 2, further comprising: a driven apparatus attached to said vehicle; a second output pulley drivingly connected to said output shaft; a driven apparatus input pulley drivingly connected to said driven apparatus; and a belt drivingly engaged with said second output pulley and said driven apparatus input pulley so that said second output pulley drives said driven apparatus input pulley.
Claim 7
Dependent Claim
25 words
A power transmission according to claim 4, wherein said second output pulley and said driven apparatus input pulley are located in an approximately horizontal plane.
Claim 8
Dependent Claim
50 words
A power transmission according to claim 4, wherein: said axle casing includes a portion for housing said differential gear which extends from a potion for housing said axle; and said first and said second output pulleys are disposed to one side and above said portion for housing said differential gear.
Claim 9
Dependent Claim
52 words
A power transmission according to claim 2, wherein: said output shaft is vertically disposed and perpendicular to a central longitudinal axis of said vehicle; and said differential gear is disposed on one side of said axis and said pump shaft is disposed on a side of said axis opposite said one side.
Claim 10
Dependent Claim
47 words
A power transmission according to claim 7, wherein: said axle casing includes a portion for housing said differential gear which extends from a portion for housing said axle; and said first output pulley is disposed to one side and above said portion for housing said differential gear.
Claim 11
Dependent Claim
66 words
A power transmission according to claim 7, further comprising: a driven apparatus attached to said vehicle; a second output pulley drivingly connected to said vertical output shaft; a driven apparatus input pulley drivingly connected to said driven apparatus; and a belt drivingly engaged with said second output pulley and said driven apparatus input pulley so that said second output pulley drives said driven apparatus input pulley.
Claim 12
Dependent Claim
25 words
A power transmission according to claim 9, wherein said second output pulley and said driven apparatus input pulley are located in an approximately horizontal plane.
Claim 13
Dependent Claim
50 words
A power transmission according to claim 7, wherein: said axle casing includes a portion for housing said differential gear which extends from a potion for housing said axle; and said first and said second output pulleys are disposed to one side and above said portion for housing said differential gear.
Claim 14
Dependent Claim
35 words
A power transmission according to claim 2, wherein said engine is disposed to one side of a vertical plane through said axles, and said hydraulic transmission is disposed to an other side of said plane.
Claim 15
Dependent Claim
43 words
A power transmission according to claim 12, wherein: said hydraulic transmission comprises a hydraulic pump hydraulically connected to a hydraulic motor within said axle casing; and said hydraulic pump and said hydraulic motor are arranged adjacent to said axles in said axle casing.
Claim 16
Dependent Claim
40 words
A power transmission according to claim 13, wherein said hydraulic motor further comprises: a motor shaft; and means for directly connecting said motor shaft with said differential gear; wherein said hydraulic motor has a larger capacity than said hydraulic pump.
Claim 17
Dependent Claim
35 words
A power transmission according to claim 12, wherein said axle casing further comprises: a chamber for housing said hydraulic transmission, substantially filled with oil; and means for accommodating expansion in the volume of said oil.
Claim 18
Dependent Claim
97 words
A power transmission for a vehicle, comprising: an engine with a vertical output shaft, said engine disposed between a pair of rear wheels, and said vertical output shaft projecting below said engine; a hydraulic transmission for driving said rear wheels disposed to the rear of said engine; a first output pulley drivingly connected to said vertical output shaft; a transmission input pulley disposed above said hydraulic transmission and drivingly connected thereto; and a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said transmission input pulley.
Claim 19
Dependent Claim
97 words
A power transmission for a vehicle, comprising: an engine with a vertical output shaft, said engine disposed between a pair of rear wheels, and said vertical output shaft projecting below said engine; a hydraulic transmission for driving said rear wheels disposed to the rear of said engine; a first output pulley drivingly connected to said vertical output shaft; a transmission input pulley disposed above said hydraulic transmission and drivingly connected thereto; and a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said transmission input pulley.
Claim 20
Dependent Claim
47 words
A power transmission according to claim 16, further comprising: an axle casing disposed below and to the rear of said engine; and a pair of axles disposed within said axle casing on which said rear wheels are mounted; wherein said axles are driven by said hydraulic transmission.
Claim 21
Dependent Claim
43 words
A power transmission according to claim 17, wherein: said hydraulic transmission comprises a hydraulic pump hydraulically connected to a hydraulic motor within said axle casing; and said hydraulic pump and said hydraulic motor are arranged adjacent to said axles in said axle casing.
Claim 22
Dependent Claim
45 words
A power transmission according to claim 18, further comprising: a motor shaft of said hydraulic motor; and means to directly connect said motor shaft to a differential gear for differentially driving said axles; wherein said hydraulic motor has a larger capacity than said hydraulic pump.
Claim 23
Dependent Claim
38 words
A power transmission according to claim 17, further comprising: a chamber disposed within said axle casing for housing said hydraulic transmission, wherein said chamber is filled with oil; means for accommodating expansion in the volume of said oil.
Claim 24
Dependent Claim
128 words
A power transmission for a vehicle, comprising: a working device disposed between a pair of front wheels and a pair of rear wheels; an engine with a vertical output shaft, said engine disposed between said pair of rear wheels, and said vertical output shaft projecting below said engine; a hydraulic transmission for driving said rear wheels disposed to the rear of said engine; first and second output pulleys drivingly connected to said vertical output shaft; a transmission input pulley drivingly connected to said hydraulic transmission; a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said tranmission input pulley; a working device input pulley driven by said second output pulley and drivingly connected to said working device.
Claim 25
Dependent Claim
128 words
A power transmission for a vehicle, comprising: a working device disposed between a pair of front wheels and a pair of rear wheels; an engine with a vertical output shaft, said engine disposed between said pair of rear wheels, and said vertical output shaft projecting below said engine; a hydraulic transmission for driving said rear wheels disposed to the rear of said engine; first and second output pulleys drivingly connected to said vertical output shaft; a transmission input pulley drivingly connected to said hydraulic transmission; a belt drivingly engaged with said first output pulley and said transmission input pulley so that said first output pulley drives said tranmission input pulley; a working device input pulley driven by said second output pulley and drivingly connected to said working device.
Claim 26
Dependent Claim
47 words
A power transmission according to claim 21, further comprising: an axle casing disposed below and to the rear of said engine; and a pair of axles disposed within said axle casing on which said rear wheels are mounted; wherein said axles are driven by said hydraulic transmission.
Claim 27
Dependent Claim
43 words
A power transmission according to claim 22, wherein: said hydraulic transmission comprises a hydraulic pump hydraulically connected to a hydraulic motor within said axle casing; and said hydraulic pump and said hydraulic motor are arranged adjacent to said axles in said axle casing.
Claim 28
Dependent Claim
45 words
A power transmission according to claim 23, further comprising: a motor shaft of said hydraulic motor; and means to directly connect said motor shaft to a differential gear for differential driving said axles; wherein said hydraulic motor has a larger capacity than said hydraulic pump.
Claim 29
Dependent Claim
39 words
A power transmission according to claim 22, further comprising: a chamber disposed within said axle casing for housing said hydraulic transmission, wherein said chamber is filled with oil; and means for accommodating expansion in the volume of said oil.
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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) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |