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:
Apr. 16, 2019
Filed:
Sep. 27, 2016
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Hirofumi Konishi, Kobe, JP;
Akihiro Mine, Kobe, JP;
Toshiyuki Hirai, Kobe, JP;
Yoshihiro Yamada, Kobe, JP;
Yudai Okuno, Kobe, JP;
Yuichi Sato, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;
Abstract
A paper feed roller of the present invention comprises a roller bodyintegrally formed of elastic material in a cylindrical shape in which a plurality of protruding linesare disposed on a peripheral surfaceat even intervals, wherein the roller bodyis formed so that crest portionsand trough portionsare continuously provided in a circumferential direction, an opening angle θ is equal to or more than 2° and is equal to or less than 8°, a radial height h of the protruding line is equal to or more than 0.051 mm and is equal to or less than 0.1 mm, and a curvature radius rat a shoulder is equal to or more than 0.55 mm.