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, 1994
Filed:
Dec. 04, 1992
Masahiro Ashiba, Kanagawa, JP;
Takao Nakadate, Kanagawa, JP;
Tokico Ltd., Kanagawa, JP;
Abstract
A damping force control type of hydraulic shock absorber includes a cylinder in which a piston is fitted to define two chambers. A main hydraulic fluid passage extends between the chambers, and a damping force generating mechanism is provided in the passage. A bypass passage is also provided between the two chambers. Two check valves are provided in the bypass passage and allow hydraulic fluid to flow in opposite directions, respectively, through the bypass passage. A first hydraulic fluid passage bypasses the first check valve and a second hydraulic fluid passage bypasses the second check valve. A control valve is provided to vary the sectional area of each of the first and second hydraulic fluid passages.