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:
Mar. 12, 1985
Filed:
Jun. 01, 1983
Tomio Imaizumi, Kanagawa, JP;
Tokico Ltd., Kanagawa, JP;
Abstract
A hydraulic damper includes a cylinder containing hydraulic liquid, a piston slidable in the cylinder and partitioning the interior of the cylinder into two liquid chambers, a passage formed through the piston to communicate the two liquid chambers, a piston rod connected to the piston and extending out of the cylinder, and a valve for controlling the liquid flow in the passage. The piston is axially displaceable relative to the piston rod by a limited amount, and the valve comprises an annular disc mounted on the piston rod and cooperating with one side surface of the piston when the piston abuts with the disc when the piston displaces in one direction and separating from the piston to form a clearance therebetween which acts as an inlet of the passage when the piston displaces in the opposite direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile