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:
Mar. 10, 2026
Filed:
Sep. 21, 2021
Hitachi Astemo, Ltd., Ibaraki, JP;
Takamasa Kotani, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
A shock absorber includes a first passage provided in a piston and through which a working fluid moves from a chamber on an upstream side to a chamber on a downstream side in a cylinder due to movement of the piston, a first damping force generation mechanism provided in the first passage to generate a damping force, a second passage () provided in a piston rod (), and a fixing member fixed to the piston rod () to form the second passage (), and a second damping force generation mechanism provided in the second passage () to generate a damping force, in which a throttle member () provided in the second damping force generation mechanism, including a plurality of notch parts () at substantially regular intervals in a circumferential direction to form a throttle flow path () in the second passage due to the notch parts (), and formed to have a flow path area of the throttle flow path () that is constant regardless of an attachment position thereof in the circumferential direction is further provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile