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:
Jun. 28, 2022
Filed:
Feb. 11, 2020
Honda Motor Co., Ltd., Tokyo, JP;
Toshio Inoue, Wako, JP;
Yuho Ito, Wako, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A variable stiffness bushing includes: inner and outer tubular members; and an elastic member connecting these tubular members. At least one pair of liquid chambers axially separated from each other is defined in the elastic member. The liquid chambers are connected by a communication passage including a circumferential passage provided in one of the inner and outer tubular members. The one of the inner and outer tubular members includes a coil wound coaxially therewith and a yoke provided with a gap constituting the circumferential passage. A magnetic fluid fills the liquid chambers and the communication passage. Upper and lower end walls and an axially intermediate partition wall of the elastic member are configured such that when the tubular members are axially displaced relative to each other, a difference is created between volumes of the axially separated liquid chambers.