Motor vehicles – Special driving device – Portable track
Patent
1977-04-19
1978-04-18
Goodman, Philip
Motor vehicles
Special driving device
Portable track
B62D 5500
Patent
active
040846539
ABSTRACT:
A crawler type vehicle has a car body, a pair of track roller frames connected to the car body and a pair of drive motors each being attached to a respective roller frame. Each of the roller frames are movable between first and second positions at which the roller frame and associated drive motor are a minimum and maximum distance respectively from a longitudinal axis of the vehicle. A first guard assembly is fastened to the car body and is of a construction sufficient for substantially encompassing the drive motors at the first position of the roller frames and for encompassing at least the distal end portions of the drive motors at the second position of the roller frames. A pair of second guard assemblies is mounted on a respective roller frame and movable therewith when the roller frame is moved between the first and second positions. Each second guard assembly is of a construction sufficient for encompassing the proximal end portion of the associated drive motor and for telescopically extending into the first guard assembly at the first position of the roller frame.
REFERENCES:
patent: 3712398 (1973-01-01), Althaus
patent: 3930549 (1976-01-01), Griffith
Caterpillar Tractor Co.
Goodman Philip
Grant John W.
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