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. 27, 1984
Filed:
Apr. 20, 1982
Applicant:
Inventor:
Tetsuo Kato, Kanagawa, JP;
Assignee:
Tokico Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
188282 ; 188317 ; 18832215 ; 1375133 ;
Abstract
A hydraulic damper includes a cylinder, a piston working in the cylinder and partitioning the interior thereof into two liquid chambers, two valve discs provided respectively on opposite end surfaces of the piston, two sets of passages opening respectively in opposite end surfaces of the piston to cooperate with respective valve discs, and an orifice communicating permanently the two liquid chambers. A restricting member is provided to change the effective area of the orifice in response to the direction of the liquid flow passing through the orifice.