The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2015
Filed:
Sep. 15, 2011
Tomoya Inoue, Kanagawa, JP;
Shingo Tsukui, Aichi, JP;
Katsuki Fujimoto, Osaka, JP;
Abstract
A crawler device includes a wheel support, wheels respectively rotatably supported thereto, and a crawler belt run around the wheels. Each of the wheels includes a rigid wheel body and an elastic material exterior part fixed to an outer periphery of the wheel body. Raised portions are formed in an outer periphery of the exterior part to continuously extend in a width direction and be arranged in a circumferential direction spaced from each other. Drain grooves extending through the exterior part in the width direction are formed between the raised portions. Top surfaces of the raised portions of the exterior part surface contact an inner peripheral surface of the crawler belt with a frictional force working therebetween. Restriction members stopping opposite side edges of the crawler belt are provided in the wheel support to restrict the crawler belt from being displaced with respect to the wheels in the width direction.