B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
280/163
B62D 61/12 (2006.01) B60G 7/00 (2006.01) B60G 11/28 (2006.01) B60P 1/02 (2006.01) B62D 7/14 (2006.01)
Patent
CA 1244062
ABSTRACT A retractable undercarriage for mounting dual wheels for a large transport vehicle includes a rigid support member adapted for connection to the vehicle and having a vertically extending leg and an arm member pivotally connected at one end thereof to the lower end of the leg by a special pin connection employing spherical ring bearings. A running gear sub-assembly is connected to the other end of the arm member. A pin member extends through openings in both said support member and said arm member. An inner tubular member extends around a central section of the pin member. Two spaced-apart inner bearing rings mounted on the tubular member each have an outer surface that is convex in axial cross-section. Two spaced-apart outer bearing rings are arranged about their respective inner bearing rings and each has an inner surface that is concave so as to form a mating bearing surface. The bearing rings and pin member are arranged in an outer tubular member that is rigidly mounted in the one end of the arm member. Seals are provided to protect the bearing rings. A hydraulic cylinder extends and retracts the undercarriage.
557101
Charczuk Bogdan
Evans John G.
Paling Spring Limited
Ridout & Maybee Llp
LandOfFree
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