Motor vehicles – Special driving device – Portable track
Patent
1979-11-09
1981-07-21
Marmor, Charles A.
Motor vehicles
Special driving device
Portable track
305 10, 305 29, 305 32, B62D 5530
Patent
active
042793181
ABSTRACT:
A continuous track assembly (12) has a frame (16) and first and second elements (18,20) pivotally connected to the frame (16). Each element (18,20) has a rotatable wheel (22,24) about which a track (30) is positioned. Either wheel (22,24) can be rotated when desired by power and driving apparatus (36,44) in an associated vehicle (10) to drive the track (30). Tension in the track (30) is maintained at a preselected level by apparatus (50) which moves the first and second elements (18,20) relative to one another to position the wheels (22,24) against the track (30). The wheels (22,24) are freely pivotally movable to enable the track assembly (12) to readily adapt to its environment and maximize tractive effort. Maintaining desired track tension substantially overcomes problems associated with a track which is too loose or tight which can result in slipping or damage to the track assembly (12).
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Caterpillar Tractor Co.
Heming William B.
Marmor Charles A.
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