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:
Oct. 28, 2008
Filed:
Aug. 01, 2005
Masaru Fukushima, Tokyo, JP;
Masahiro Miwa, Tokyo, JP;
Masaru Fukushima, Tokyo, JP;
Masahiro Miwa, Tokyo, JP;
Kayaba Industry Co., Ltd., Tokyo, JP;
Abstract
In a hydraulic shock absorber (), a piston rod () protrudes from a cylinder () filled with hydraulic fluid. A rebound cushion () is fitted to an outer circumferential surface of the piston rod () in the cylinder (). A stopper () fixed to the cylinder () contacts the rebound cushion () at an protrusion limiting position of the piston rod () to prevent further protrusion of the piston rod (). An oil pool () formed in a sliding surface () of the rebound cushion () supplies oil to the sliding surface that slides on any of the inner circumferential surface of the cylinder () and the outer circumferential surface of the piston rod () to ensure smooth relative rotation of the piston rod () at the protrusion limiting position and the cylinder ().