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:
Nov. 29, 2016
Filed:
Apr. 29, 2015
Mando Corporation, Pyeongtaek-si, Gyeonggi-do, KR;
Eun Joong Kim, Yongin-si, KR;
MANDO CORPORATION, Pyeongtaek-si, Gyeonggi-do, KR;
Abstract
A damping force variable valve assembly includes a spool () which is moved by a magnetic force, a spool guide () which surrounds the spool (), valve bodies (), a main valve (), a back pressure chamber () which is formed at the back of the main valve (), and an elastic opening/closing portion which is installed in the valve body to open and close a pressure adjustment passage () communicating the inside of the back pressure chamber () with the outside of the back pressure chamber (). Due to the interaction between the spool () and the spool guide (), the damping force of the shock absorber is variable between a hard mode in which the back pressure of the back pressure chamber () is increased and a soft mode in which the back pressure of the back pressure chamber () is decreased. In a case where a flow velocity of a working fluid is low in the hard mode, the elastic opening/closing portion opens the pressure adjustment passage () when an internal pressure of the back pressure chamber () exceeds a preset pressure.