Motor vehicles – Special driving device – Portable track
Patent
1987-02-05
1988-08-16
Love, John J.
Motor vehicles
Special driving device
Portable track
144 3D, 144 34E, 180 95, 180 952, 180 41, 280 6H, 414 23, 414687, B62D 5508
Patent
active
047637420
ABSTRACT:
A four track vehicle especially adapted for logging on steep slopes includes a running unit and an upper unit. The upper unit is articulated relative to the lower unit to maintain a center of gravity within the four tracked pods upon which the running unit is mounted. Sensing systems are utilized to alert the operator when the machine is in an anticipitated tipping condition. Moreover, a unique suspension system combining a torsion frame and swingable pod mounting arms are employed. The pods are locked in position when the vehicle is in an operating mode and are unlocked when the vehicle is in a travel mode.
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Allied Systems Company
Hill Mitchell J.
Love John J.
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