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:
Feb. 10, 2026
Filed:
Sep. 20, 2022
Hitachi Astemo, Ltd., Hitachinaka, JP;
Mikio Yamashita, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
A suspension system includes: a variable damper configured to use a damping force variable actuator to adjust communication of working fluid generated in a passage by a relative movement between a vehicle body and a wheel, to thereby adjust a damping force over a range of a soft characteristic to a hard characteristic; and a controller configured to control the damping force variable actuator. The variable damper further includes a frequency response unit configured to reduce the damping force for vibration at a specific frequency. The controller is configured to increase a change rate from a soft side to a hard side at a time of controlling the damping force to reach a target damping force when a frequency of the relative movement between the vehicle body and the wheel is lower than a first frequency set to the frequency response unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile