Wheel substitutes for land vehicles – Endless belt having nonmetallic track or tread – Track formed of endless flexible belt
Reexamination Certificate
2006-07-18
2006-07-18
Stormer, Russell D. (Department: 3617)
Wheel substitutes for land vehicles
Endless belt having nonmetallic track or tread
Track formed of endless flexible belt
C305S165000
Reexamination Certificate
active
07077485
ABSTRACT:
A core-less rubber crawler has a guide protrusion protruding from an internal surface of a rubber main body in the shape of an endless belt, and the protrusion extends in the lengthwise direction of the rubber main body at the center with respect to the widthwise direction thereof, and ground contacting lugs are provided on the rubber main body characterized in that non-ground contacting areas are formed on the ground contacting lugs correspondingly to a region where the guide protrusion is provided. By the existence of the non-ground contacting area of the ground contacting lugs correspondingly to the place where the guide protrusion is provided, no ground contacting repulsive force is received in the non-ground contacting area. Therefore, it is possible to restrict the shearing force in the vicinity of the basal part of the guide protrusion.
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Akiyama Hitoshi
Tsuru Eiji
Bridgestone Corporation
Stormer Russell D.
Sughrue & Mion, PLLC
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