Motor vehicles – Special driving device – Portable track
Patent
1995-09-22
1998-05-12
Boehler, Anne Marie
Motor vehicles
Special driving device
Portable track
305125, 305132, 305139, B62D 5514
Patent
active
057494231
ABSTRACT:
A heavy duty belt laying work machine includes a frame, a driver wheel mounted in supporting relation to the frame on each lateral side thereof, an idler wheel assembly disposed on each lateral side of the frame. The idler wheel assembly includes an idler wheel and a carry-roller, each of which is rotatably connected to an idler support arm that is pivotally mounted in supporting relation to the frame. A mid-roller is disposed on each lateral side of the frame between the driver wheel and the idler wheel assembly and rotatably connected to a mid-roller support arm mounted in supporting relation to the frame. An endless, inextensible belt is entrained about each respective idler wheel and driver wheel on each lateral side of the frame and contacts the mid-roller and the carry-roller. Apparatus are provided for controllably tensioning and urging each belt into frictional driven engagement with a corresponding one of the driver wheels.
REFERENCES:
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patent: 2158611 (1939-03-01), Wickersham
patent: 3168929 (1965-02-01), Wardle
patent: 4519654 (1985-05-01), Satzler et al.
patent: 4681177 (1987-07-01), Zborowski
patent: 5279378 (1994-01-01), Grawey et al.
patent: 5316381 (1994-05-01), Isaacson et al.
patent: 5409075 (1995-04-01), Nieman
Burckhartzmeyer Jerry J.
Crabb Elmer R.
Lehnhoff Terry F.
Watson, Jr. Alva L.
Boehler Anne Marie
Caterpillar Inc.
Pence O. Gordon
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