B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
B62D 53/08 (2006.01)
Patent
CA 2146588
A fifth wheel slip plate is described, in which plastic inserts are used in the plastic slip plate instead of metal skip plates, and in which a compositeplastic material is used for outer lateral portions of the slip plate. The plastic of the insert, preferably nylon, is substantially harder than the plastic of the slip plate, which is preferably ultra high molecular weight polyethylene. The harder plasticinsert therefore does not compress as much as the slip plate, and therefore absorbs the primary impact during the coupling operation. The composite material outer portions absorb much of the impact damage, without the undesirable friction which metal would produce, and they are relatively simple to replace, without need to replace the whole slip plate.
Armstrong R. Craig
Colwell J. Bruce
LandOfFree
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