US6513614B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission on all wheel steer power machine
Assignee: Doosan Bobcat North America Inc
•
Filing: 2002-05-21
•
Granted: 2003-02-04
•
Expires: 2022-05-21
Abstract
Abstract A power machine including a transmission, a chain case, a motor and a hydraulic cylinder having a rod end and a base end and a plurality of hose couplings. The hydraulic cylinder coupled to a chain case such that the base end and all of the hose couplings are mounted within an interior portion of the chain case and such that the rod end of the hydraulic cylinder extends outside the chain case.
Inventors
- 👤 Donald Knutson
- 👤 Charles H. Krause
- 👤 Kenneth R. Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:50
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/30; B60K17/22; B60K17/34; B60K17/342; B60K17/358; B62; B62D; B62D11/00; B62D11/02; B62D11/04; B62D7/00; B62D7/06; B62D7/14; B62D7/142
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
118 words
A power machine having a frame, comprising: a chain case coupled to the frame; at least one hydraulic motor coupled to the chain case; a plurality of independently pivotable and rotatable wheels; a plurality of hydraulic cylinders having a rod end and a base end and a plurality of hose couplings, the plurality of hydraulic cylinders being coupled to the chain case such that the base end and all of the hose couplings are mounted within an interior portion of the body and such that the rod end of the plurality of hydraulic cylinders extends outside of the frame; and a plurality of transmissions each coupled to one of the wheels and the at least one hydraulic motor.
Claim 2
Dependent Claim
118 words
A power machine having a frame, comprising: a chain case coupled to the frame; at least one hydraulic motor coupled to the chain case; a plurality of independently pivotable and rotatable wheels; a plurality of hydraulic cylinders having a rod end and a base end and a plurality of hose couplings, the plurality of hydraulic cylinders being coupled to the chain case such that the base end and all of the hose couplings are mounted within an interior portion of the body and such that the rod end of the plurality of hydraulic cylinders extends outside of the frame; and a plurality of transmissions each coupled to one of the wheels and the at least one hydraulic motor.
Claim 3
Dependent Claim
35 words
The power machine of claim 1 wherein the plurality of wheels comprise four wheels and wherein the at least one hydraulic motor comprises two hydraulic motors each coupled to a pair of the four wheels.
Claim 4
Dependent Claim
42 words
The power machine of claim 1 wherein the transmission further comprises: a universal joint; a housing surrounding the universal joint, the housing pivotable about a first pivot axis; and a wheel hub coupled to the universal joint and one of the wheels.
Claim 5
Dependent Claim
52 words
The power machine of claim 3 further comprising: a steering connection tab coupled to the housing; and wherein the rod end of one of the hydraulic cylinders is coupled to the steering connection tab such that when the hydraulic cylinder is moved the housing and the wheel pivot about the pivot axis.
Claim 6
Dependent Claim
28 words
The power machine of claim 1 wherein the frame has a plurality of apertures that allow the rod end of the hydraulic cylinders to pass through the frame.
Claim 7
Dependent Claim
114 words
The power machine of claim 1 wherein the transmission further comprises: a sprocket assembly comprising: a chain; a sprocket having a central region and an outer periphery, the outer periphery being adapted to receive the chain; and a sleeve rigidly coupled about the inboard end of the axle and rigidly coupled to the central region of the sprocket; an axle rigidly coupled to the sprocket assembly, the axle having an inboard end and an out board end; a single spherical bearing coupling the inboard end of the axle to the frame of the vehicle; a universal joint coupled to the outboard end of the axle; and a wheel hub coupled to the universal joint.
Claim 8
Dependent Claim
37 words
The power machine of claim 6 wherein the axle includes an annular shoulder thereon and wherein the spherical bearing abuts an outboard side of the annular shoulder and is disposed about the axle inboard of the sleeve.
Claim 9
Dependent Claim
25 words
The power machine of claim 1 wherein the base end of the hydraulic cylinders is coupled to the chain case at a second pivot axis.
Claim 10
Dependent Claim
14 words
The power machine of claim 3 wherein the universal joint is a Hooke's joint.
Claim 11
Dependent Claim
14 words
The power machine of claim 3 wherein the universal joint is a Cardan joint.
Claim 12
Dependent Claim
113 words
A power machine having a body, comprising: a chain case coupled to the body; at least one hydraulic motor coupled to the chain case; a plurality of independently steerable and rotatable wheels; a hydraulic cylinder having a rod end and a base end and a plurality of hose couplings, the hydraulic cylinder being coupled to the chain case such that the base end and all of the hose couplings are mounted within an interior portion of the chain case and such that the rod end of the hydraulic cylinder extends outside the chain case; and a plurality of transmissions each coupled to one of the wheels and the at least one hydraulic motor.
Claim 13
Dependent Claim
113 words
A power machine having a body, comprising: a chain case coupled to the body; at least one hydraulic motor coupled to the chain case; a plurality of independently steerable and rotatable wheels; a hydraulic cylinder having a rod end and a base end and a plurality of hose couplings, the hydraulic cylinder being coupled to the chain case such that the base end and all of the hose couplings are mounted within an interior portion of the chain case and such that the rod end of the hydraulic cylinder extends outside the chain case; and a plurality of transmissions each coupled to one of the wheels and the at least one hydraulic motor.
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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) | 2006-02-03 | 2006-08-05 | 2007-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-03 | 2010-08-05 | 2011-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-03 | 2014-08-05 | 2015-02-04 | $7700.00 | Window Closed / Lapsed |