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. 04, 2000
Filed:
Mar. 25, 1998
Atsuo Matsumoto, Itami, JP;
Yoshiki Matsuzaki, Itami, JP;
Atsushi Kubo, Itami, JP;
Koji Mori, Itami, JP;
Shigeki Yoshimoto, Itami, JP;
Yousuke Igarashi, Itami, JP;
Katsuo Inoue, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An improved disk brake which provides both low dragging torque and good pedal feeling even on ABS-equipped vehicles with which the working fluid pressure is around or over 140 kgf/cm.sup.2. The disk brake has a piston seal fitted in a groove formed in the cylinder. The piston seal is deformed when the brake piston is advanced by fluid pressure to press the pad and retracts the piston by its spring-back force when the fluid pressure is released. The width W of chamfer provided at edge of the seal groove is set to 1.0 mm or over and the hardness of the piston seal is set to 75.degree. IRHD or over.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile