B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/129
B60C 27/00 (2006.01)
Patent
CA 1133815
TITLE TIRE TRACTION DEVICE ABSTRACT OF THE DISCLOSURE A traction device surrounding the tread and sidewals of a tire. The device includes several elongated, molded plastic traction members having fastening strips secured to opposite ends. The traction members are secured about the periphery of the tire by a flexible belt or strap extending through the fastening strips at opposite sides of the tire so that the traction members extend across the tire tread from one side of the tire to the other. The traction members have a generally planar outer face. The inner face is formed with a plurality of suction cavities surrounded by sidewalls which abut the tread surface of the tire. A plurality of relatively small apertures extends from the suction cavities outwardly and communicate with recesses formed in the planar outer face of the traction members so that as the tire rolls along a road causing the traction members to sequentially contact the road surface, the contact between the undersurface of the traction members surrounding the suction cavity walls and the tire pro- duces a vacuum within the suction cavities. The vacuum causes the traction member to simultaneously grip the tire and the road surface until the traction member is lifted from the road surface, at which time the suction within the suction cavities is broken by the admission of air through the apertures be- tween the suction cavities and the outer surface of the trac- tion members.
367048
B. R. International A. Partnership
Frayne & Company Robert
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