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.

Date of Patent:
Mar. 28, 2006

Filed:

Mar. 15, 2004
Applicant:

Tsutomu Yoshimoto, Tokyo, JP;

Inventor:

Tsutomu Yoshimoto, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

An object of the present invention is to provide a front fork with a double-rod damper, which can improve an efficiency of an assembly operation thereof by simplifying alignment work of piston rods on assembly. To achieve this object, a front fork () comprising: an outer tube (); an inner tube () inserted expansibly and contractibly into the outer tube; a double-rod damper () disposed inside the outer tube and the inner tube, the double-rod damper including a cylinder (), a piston () received in the cylinder, a first piston rod () and a second piston rod () extending respectively from each side of the piston and penetrating through the cylinder, wherein an upper chamber () and a lower chamber () are defined between the cylinder and the piston, into which that oil is contained; and a fork-inside oil chamber () defined by the outer tube, the inner tube, and the double-rod damper, into which oil and air are contained, the double-rod damper further including: a piston rod connection mechanism () that connects at least one of the first piston rod and the second piston rod to the piston such that the one is displaceable in a direction perpendicular to an axis of the piston.


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