Wheel substitutes for land vehicles – Endless belt having nonmetallic track or tread – Track formed of endless flexible belt
Reexamination Certificate
2006-05-02
2006-05-02
Morano, S. Joseph (Department: 3617)
Wheel substitutes for land vehicles
Endless belt having nonmetallic track or tread
Track formed of endless flexible belt
C305S167000
Reexamination Certificate
active
07036893
ABSTRACT:
The object of the invention is to provide a rubber crawler which has an excellent driving performance without rubber breakage and a process for manufacturing the same. The object is attained by firstly obtaining a small bending rigidity of a joint part and eliminating disproportional arrangement of main cord embedded in the rubber crawler in a widthwise direction for obtaining durability, and uniform revolution.In a rubber crawler1in the form of an endless belt having an inserting joint structure S wherein ends of a number of parallel reinforcing cords3as main cords embedded in the rubber crawler are inserted between each other, the number of reinforcing cords are divided in an even number (2 in the embodiments shown with figures) parts, the ends parts3A1to3A6and3B1to3B6extending in both directions are arranged axisymmetrically about the dividing line L. Accordingly, the inserting joint structure S is obtained as a prerequisite which is on a same plane when viewed from the side. Furthermore, it is possible to eliminate disproportional arrangement of the main cords to be embedded. As a result, driving performance is improved, and rubber breakage is prevented, whereby it is possible to further increase the durability.
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Bellinger Jason R.
Bridgestone Corporation
Morano S. Joseph
LandOfFree
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