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:
Nov. 14, 2023
Filed:
Apr. 08, 2019
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Kohei Matsushita, Tokyo, JP;
Kisho Ashida, Tokyo, JP;
Hisashi Tanie, Tokyo, JP;
Yusuke Nishino, Hitachinaka, JP;
Kazumoto Sano, Hitachinaka, JP;
Ryota Ashizawa, Tokyo, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
The present disclosure provides a disk brake capable of making it easier for the piston to return than conventional ones when the brake is released from a state where the brake is applied. In the disk brake, the seal grooveincludes a front wall, a rear wallfarther from the brake rotor than the front wallin the axial direction Dl, and a bottom wallextending along the axial direction Dl between the rear walland the front wall. The bottom wallincludes a front bottom walladjacent to the front walland a rear bottom walladjacent to the rear wall. The rear bottom wallhas a depth dfrom the inner circumferential surfaceof the cylinder, the depth dbeing larger than a dimension dof the uncompressed piston sealin the direction of the depth dand being larger than a depth dfrom the inner circumferential surfaceof the cylinderof the front bottom wall