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:
Sep. 28, 1993
Filed:
Oct. 18, 1991
Masahiro Ashiba, Kanagawa, JP;
Tokico Ltd., Kanagawa, JP;
Abstract
A hydraulic shock absorber for use in a suspension system of a vehicle has the flow of a hydraulic fluid, induced in a hydraulic fluid passage providing communication between two cylinder chambers by the sliding motion of a piston in a cylinder, controlled to generate a damping force, thereby making the vehicle comfortable to ride in and improving the steering stability. The hydraulic shock absorber comprises a tubular guide communicating at both ends thereof with the two cylinder chambers, respectively. A shutter slidably fits in the tubular guide. A chamber is formed in the guide at one end of the shutter, the chamber communicating with one of the two cylinder chambers through a first orifice passage. A second orifice passage is provided in the side wall of the tubular guide, the second orifice passage being opened and closed by the sliding motion of the shutter, and a bypass passage provides communication between the two cylinder chambers through the second orifice passage.