B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/82
B60C 9/00 (2006.01) B60C 9/18 (2006.01) B60C 9/20 (2006.01) B60C 11/00 (2006.01) B60C 11/01 (2006.01)
Patent
CA 1039167
Abstract of the Disclosure A low section profile pneumatic radial tire for heavy vehicles used for recently developed transport facilities such as a trolley bus, mono-rail vehicle, driverless vehicle, sub-way vehicle, etc. The low section profile pneumatic radial tire for heavy vehicles is con- structed to satisfy the following three conditions, i.e. 1) a thickness Gm of that tread portion which extends along a crown center region SW2 is substantially uniformly distributed over 35-60% of the maximum width SW1 of those inextensible layers which mainly consist of a tension member of a belt, 2) a cushion rubber formed of a rubber stock which is triangular in cross-section and has a thickness Gs is arranged outside both sides of the center region of a crown and inserted between a carcass and a belt so as to gradually increase the thickness of the tread portion toward the hump portion of the tire, and 3) the above mentioned thickness Gs of the cushion rubber is limited to a range of 25-50%, preferably 30- 45% of the thickness Gc of that tread portion which is located at the crown center position.
262305
Arai Tatsuo
Hirano Hironori
Kajimura Hiroyuki
Matsui Masayuki
LandOfFree
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