Motor vehicles – Special driving device – Portable track
Patent
1987-12-22
1989-04-04
Mitchell, David M.
Motor vehicles
Special driving device
Portable track
180 67, 180 2402, 280678, 280683, 305 10, 305 22, 305 24, B60G 506, B62D 5514
Patent
active
048177466
ABSTRACT:
A track-type vehicle capable of high speed operation over rough terrain includes a frame supported by lefthand and righthand suspension mechanisms individually having a plurality of hydropneumatically actuated struts for supporting the frame on a plurality of wheels. An elastomeric drive belt is entrained about these wheels and is frictionally driven by an elevated drive wheel. Forces from several struts are directed into the frame in a centralized common region which minimizes rocking of the vehicle. A front idler wheel is urged forwardly and downwardly against the drive belt by a hydropneumatically actuated recoil mechanism, and a front strut also acts on the front idler wheel to resiliently urge it downwardly. A plurality of pivoting members are cooperatively connected to the struts to more evenly distribute forces against the drive belt.
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Farris Robert R.
Purcell Robert J.
Simmons Gerald P.
Caterpillar Inc.
Hill Mitchell J.
Lanchantin, Jr. Charles E.
Mitchell David M.
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