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:
Dec. 29, 2020
Filed:
Aug. 24, 2016
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Mikio Yamashita, Zama, JP;
Fumiyuki Yamaoka, Sagamihara, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
Provided is a shock absorber capable of smoothly changing a damping force in a low speed range of piston speed and of opening a main valve with a smaller differential pressure. An auxiliary valve () is provided on an upstream side of a main valve () in series with the main valve (). Thus, the damping force in the low speed range of the piston speed can be smoothly changed. Further, the main valve () has a simply-supported structure in which an inner peripheral side thereof is prevented from being clamped and is supported in a cantilever state. Thus, the main valve () can be opened with a smaller differential pressure.