B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
B62D 49/00 (2006.01) B60G 11/18 (2006.01)
Patent
CA 2695689
A tractor has front wheels mounted on the frame at fixed angles and a pair of rear wheels each mounted on a respective castor assembly. Each of the castor assemblies has a vertical pivot axis mounted in a swivel support of an axle of the frame and a bottom transverse tubular member connected to a pair of parallel forks carrying at a lower ends the transverse axle of the wheel. The mounting link includes a torsion spring defined by a rod attached to the forks which passes though a sleeve containing a resilient elastomeric spring of the tubular member allowing spring suspension pivotal movement of the upper ends of the forks relative to the bottom transverse member about an axis parallel to the wheel axis.
Battison Williams Dupuis
Macdon Industries Ltd.
LandOfFree
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