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Sumitomo Wiring System, Ltd.

Shouji Yamada

Kouji Nemoto

Masaki Koshi

Akihiko Watanabe

An anti-skid device for use on pneumatic tires of an automotive vehicle includes a supporting ring rotatably provided on the outer circumferential periphery of a mounting plate that is detachably mounted on the wheel portion of the automotive vehicle, a plurality of ribs formed from a material having elasticity and toughness that are provided on the supporting ring in a radial fashion and are bent so as to extend from the outer side of a pneumatic tire to a tread thereof, first and second endless bands provided on the leading-end portion of each of the ribs in such a manner as to be located within the width of the tread of said pneumatic tire, rivets secured at portions where the first and second bands intersect the ribs, and a counter-measure provided on either of the first and second bands for preventing an imbalance in the degree of stretch between the first and second bands. Insertion and fixation holes each including a large diameter portion and a small diameter portion are formed in the mounting plate with the large diameter portions being designed to be opened and/or closed by stoppers after the leading-end portions of wheel nuts of the automotive vehicle have been put through the large diameter portions so as to be then moved to the small diameter portions to be secured in place therein.

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Shizuoka, Japan

Shouji Yamada