Patent US4942780A successfully refreshed from Google Patents.
US4942780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
HST(hydrostatic transmission) housing axle driving apparatus
Assignee: Kanzaki Kokyukoki Manufacturing Co Ltd
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Filing: 1989-08-23
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Granted: 1990-07-24
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Expires: 2009-08-23
Abstract
Abstract An HST housing axle driving apparatus for a small-sized running vehicle, such as a tractor, in which an axle casing is divided into a left-side half axle casing and a right-side half axle casing. In one of the left- and right-side half axle casings are disposed a hydraulic pump provided with a vertical pump shaft and a hydraulic motor provided with a horizontal motor shaft. In the other of the left- and right-side half axle casings are disposed a speed reduction shaft and a differential gear unit, so that a driving force is adapted to be transmitted from the vertical pump shaft to said horizontal motor shaft.
Inventors
- 👤 Koichiro Fujisaki
- 👤 Ryota Ohashi
- 👤 Shusuke Nemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; B60K17/105; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
204 words
An axle driving apparatus comprising: an axle housing, said axle housing being divided into a first axle casing and a second axle casing; a differential gear unit disposed within said axle housing; a first axle disposed within said first axle casing; a second axle disposed within said second axle casing; a hydraulic pump disposed within said axle housing, said hydraulic pump having a pump shaft which is disposed perpendicular to said first and second axles; a hydraulic motor disposed within said axle housing, said hydraulic motor having a motor shaft which is disposed in parallel to said first and second axles; a motor gear fixed to said motor shaft; a speed reduction transmission for drivingly connecting said motor gear and said differential gear unit; said speed reduction transmission and said differential gear unit being disposed within said second axle casing; said hydraulic pump and said hydraulic motor being disposed within said first axle casing; said hydraulic pump being disposed on a bottom wall of said first axle casing between said first axle and said hydraulic motor; said hydraulic motor being disposed at an inner side wall of said first axle casing; and means for transferring oil between said hydraulic pump and said hydraulic motor.
Claim 2
Dependent Claim
204 words
An axle driving apparatus comprising: an axle housing, said axle housing being divided into a first axle casing and a second axle casing; a differential gear unit disposed within said axle housing; a first axle disposed within said first axle casing; a second axle disposed within said second axle casing; a hydraulic pump disposed within said axle housing, said hydraulic pump having a pump shaft which is disposed perpendicular to said first and second axles; a hydraulic motor disposed within said axle housing, said hydraulic motor having a motor shaft which is disposed in parallel to said first and second axles; a motor gear fixed to said motor shaft; a speed reduction transmission for drivingly connecting said motor gear and said differential gear unit; said speed reduction transmission and said differential gear unit being disposed within said second axle casing; said hydraulic pump and said hydraulic motor being disposed within said first axle casing; said hydraulic pump being disposed on a bottom wall of said first axle casing between said first axle and said hydraulic motor; said hydraulic motor being disposed at an inner side wall of said first axle casing; and means for transferring oil between said hydraulic pump and said hydraulic motor.
Claim 3
Dependent Claim
23 words
An axle driving apparatus, as set forth in claim 1, wherein said means for transferring oil comprises passages formed in said axle housing.
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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) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |