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:
Aug. 23, 1988
Filed:
Feb. 05, 1987
Hiroshi Murata, Kanagawa, JP;
Kunihiko Terasawa, Kanagawa, JP;
Tokico Ltd., Kanagawa, JP;
Abstract
A hydraulic damper of the adjustable damping force type includes a cylinder, a piston rod having an end portion inserted into the cylinder and a bore formed therein and extending in the axial direction thereof, a piston secured to one end portion of the piston rod and partitioning the interior of the cylinder into two chambers, a passage for communicating the two chambers through the bore, at least one pair of orifices disposed midway along the passage, an adjusting rod rotatably inserted into the bore and adapted to be operated from the side of the other end portion of the piston rod, and a shutter secured to the adjusting rod and having a pair of openings radially formed so as to open the at least one pair of orifices. The at least one pair of orifices and the pair of openings are arranged such that either one of the pair of orifices starts to open and close after the other.