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:
Sep. 15, 2020
Filed:
Feb. 16, 2017
The Yokohama Rubber Co., Ltd., Minato-ku, Tokyo, JP;
Kensuke Matsumura, Shinshiro, JP;
Yuichi Sugiyama, Shinshiro, JP;
Abstract
An inner circumferential length measuring device for a circular member includes a two-dimensional sensor disposed at a predetermined measurement position facing an inner circumferential surface of a circular member placed flat in an unrestrained state on a support. By the two-dimensional sensor being rotated about a rotation shaft of a predetermined position inward of the circular member, a separation distance from the two-dimensional sensor to the inner circumferential surface is measured by the two-dimensional sensor in a non-contact state with the circular member in a range of an entire circumference of the circular member. A calculation unit calculates an inner circumferential length of the circular member based on the separation distance measured and a distance from the rotation shaft to the two-dimensional sensor.