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:
Oct. 07, 2025
Filed:
Jul. 14, 2021
Hitachi Astemo, Ltd., Ibaraki, JP;
Mikio Yamashita, Hitachinaka, JP;
Takamasa Kotani, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
This shock absorber includes a first damping force generation mechanism () provided in a passage () of a piston (), a second damping force generation mechanism () provided in a piston rod (), and a fluid storage mechanism () provided in the piston rod (). The fluid storage mechanism () includes a flexible disc () which deforms before the second damping force generation mechanism () opens, and a plate-shaped biasing member () which has a hole portion () between an inner circumferential end portion and an outer circumferential end portion, and in which the inner circumferential end portion is formed so that the piston rod () can be inserted therein.