Patent EP0286306A1 successfully refreshed from Google Patents.
US4101004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive and steering apparatus
Assignee: Individual
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Filing: 1977-01-31
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Granted: 1978-07-18
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Expires: 1997-01-31
Abstract
Abstract A drive and steering apparatus for a vehicle of a type having ground engaging wheels or tracks on each side thereof. A shaft rotatably connected to the frame of the vehicle is selectively rotated by a motor through a drive train. A first drive assembly is rotatably disposed on one side of the shaft and a second drive assembly is rotatably disposed on the other side of the shaft. A first clutch mechanism is attached to the shaft and is selectively movable between positions in contact with the first drive assembly and out of contact with the first drive assembly. A first brake mechanism is attached to the frame and is selectively movable between positions in and out of contact with the first drive assembly. A first control mechanism is provided for simultaneously controlling the position of the first clutch mechanism and the first brake mechanism with respect to the first drive assembly, the first control means having a neutral position whereby the first clutch mechanism and the first brake mechanism are spaced from the first drive assembly, a driving position whereby the first clutch mechanism is in contact with the first drive assembly and the first brake mechanism is out of contact with the first drive assembly, and a braking position whereby the first clutch mechanism is out of contact with the first drive assembly and the first brake mechanism is in contact with the first drive assembly. The second drive assembly, second clutch mechanism, second brake mechanism, and second control mechanism operate substantially identically on the other side of the vehicle as the first drive assembly, first clutch mechanism, first brake mechanism and first control mechanism respectively, whereby the drive and steering of the vehicle can be controlled.
Inventors
- 👤 Herbert D. Oltman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:11
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/10; B62D11/00; B62D11/02; B62D11/06; B62D11/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
671 words
A drive and steering apparatus for a vehicle comprising: a frame; ground engaging means having a first side and a second side rotatably attached to said frame for moving said vehicle; a shaft; means for rotatably attaching said shaft to said frame; means attached to said frame for rotating said shaft; a first drive assembly, said first drive assembly having a first and a second frictional surface thereon, said first drive assembly including two drums rigidly connected together, said first and second frictional surfaces of said first drive assembly being located on an interior surface of the drums of said first drive assembly; means for rotatably mounting said first drive assembly on said shaft; means for transmitting rotary motion of said first drive assembly to the first side of said ground engaging means; a first clutch means attached to said shaft, said first clutch means being movable between a first position in frictional contact with said first frictional surface of the first drive assembly whereby said first drive assembly rotates with said shaft, and a second position whereby said first clutch means is spaced from said first frictional surface of the first drive assembly whereby rotational movement of said shaft is not transmitted to said first drive assembly, said first clutch means comprising a hydraulically actuated shoe; a first brake means attached to said frame, said first brake means being movable between a first position in frictional contact with said second frictional surface of the first drive assembly whereby said first drive assembly is prevented from rotating and a second position whereby said first brake means is spaced from said second frictional surface of the first drive assembly whereby said first drive assembly is allowed to rotate, said first brake means comprising a hydraulically actuated shoe; first control means for simultaneously controlling said first clutch means and said first brake means, said first control means having a neutral position whereby the first clutch means and the first brake means are in the second positions thereof respectively, a driving position whereby said first clutch means is in the first position thereof and the first brake means is in the second position thereof, and a braking position whereby said first clutch means is in said second position thereof and said first brake means is in the first position thereof; a second drive assembly, said second drive assembly having a first and a second frictional surface thereon; means for rotatably mounting said second drive assembly on said shaft; means for transmitting rotary motion of said second drive assembly to the second side of said ground engaging means; a second clutch means attached to said shaft, said second clutch means being movable between a first position in frictional contact with said first frictional surface of the second drive assembly whereby said second drive assembly rotates with said shaft, and a second position whereby said second clutch means is spaced from said first frictional surface of the second drive assembly whereby rotational movement of said shaft is not transmitted to said second drive assembly; a second brake means attached to said frame, said second brake means being movable between a first position in frictional contact with said second frictional surface of the second drive assembly whereby said second drive assembly is prevented from rotating and a second position whereby said second brake means is spaced from said second frictional surface of the second drive assembly whereby said second drive assembly is allowed to rotate; and second control means for simultaneously controlling said second clutch means and said second brake means, said second control means having a neutral position whereby the second clutch means and the second brake means are in the second positions thereof respectively, a driving position whereby said second clutch means is in the first position thereof and the second brake means is in the second position thereof, and a braking position whereby said second clutch means is in said second position thereof and said second brake means is in the first position thereof.
Claim 2
Dependent Claim
671 words
A drive and steering apparatus for a vehicle comprising: a frame; ground engaging means having a first side and a second side rotatably attached to said frame for moving said vehicle; a shaft; means for rotatably attaching said shaft to said frame; means attached to said frame for rotating said shaft; a first drive assembly, said first drive assembly having a first and a second frictional surface thereon, said first drive assembly including two drums rigidly connected together, said first and second frictional surfaces of said first drive assembly being located on an interior surface of the drums of said first drive assembly; means for rotatably mounting said first drive assembly on said shaft; means for transmitting rotary motion of said first drive assembly to the first side of said ground engaging means; a first clutch means attached to said shaft, said first clutch means being movable between a first position in frictional contact with said first frictional surface of the first drive assembly whereby said first drive assembly rotates with said shaft, and a second position whereby said first clutch means is spaced from said first frictional surface of the first drive assembly whereby rotational movement of said shaft is not transmitted to said first drive assembly, said first clutch means comprising a hydraulically actuated shoe; a first brake means attached to said frame, said first brake means being movable between a first position in frictional contact with said second frictional surface of the first drive assembly whereby said first drive assembly is prevented from rotating and a second position whereby said first brake means is spaced from said second frictional surface of the first drive assembly whereby said first drive assembly is allowed to rotate, said first brake means comprising a hydraulically actuated shoe; first control means for simultaneously controlling said first clutch means and said first brake means, said first control means having a neutral position whereby the first clutch means and the first brake means are in the second positions thereof respectively, a driving position whereby said first clutch means is in the first position thereof and the first brake means is in the second position thereof, and a braking position whereby said first clutch means is in said second position thereof and said first brake means is in the first position thereof; a second drive assembly, said second drive assembly having a first and a second frictional surface thereon; means for rotatably mounting said second drive assembly on said shaft; means for transmitting rotary motion of said second drive assembly to the second side of said ground engaging means; a second clutch means attached to said shaft, said second clutch means being movable between a first position in frictional contact with said first frictional surface of the second drive assembly whereby said second drive assembly rotates with said shaft, and a second position whereby said second clutch means is spaced from said first frictional surface of the second drive assembly whereby rotational movement of said shaft is not transmitted to said second drive assembly; a second brake means attached to said frame, said second brake means being movable between a first position in frictional contact with said second frictional surface of the second drive assembly whereby said second drive assembly is prevented from rotating and a second position whereby said second brake means is spaced from said second frictional surface of the second drive assembly whereby said second drive assembly is allowed to rotate; and second control means for simultaneously controlling said second clutch means and said second brake means, said second control means having a neutral position whereby the second clutch means and the second brake means are in the second positions thereof respectively, a driving position whereby said second clutch means is in the first position thereof and the second brake means is in the second position thereof, and a braking position whereby said second clutch means is in said second position thereof and said second brake means is in the first position thereof.
Claim 3
Dependent Claim
60 words
The apparatus of claim 1 wherein said second drive assembly includes two drums rigidly connected together, said first and second frictional surfaces of said second drive assembly being located on an interior surface of the drums of said second drive assembly; said second clutch means comprising a hydraulically actuated shoe and said second brake means comprising a hydraulically actuated shoe.
Claim 4
Dependent Claim
35 words
The apparatus of claim 1 wherein said first control means comprises: piston means for hydraulically controlling the positions of said first clutch means and said first brake means with respect to said first drive assembly.
Claim 5
Dependent Claim
35 words
The apparatus of claim 3 wherein said second control means comprises: piston means for hydraulically controlling the positions of said second clutch means and said second brake means with respect to said second drive assembly.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1 wherein said ground engaging means comprises wheels rotatably attached to the frame.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |