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:
Feb. 11, 2014

Filed:

Feb. 09, 2007
Applicants:

Hisato Imaeda, Tokyo, JP;

Masaru Fukushima, Tokyo, JP;

Kazuhiko Hayashi, Yokohama, JP;

Inventors:

Hisato Imaeda, Tokyo, JP;

Masaru Fukushima, Tokyo, JP;

Kazuhiko Hayashi, Yokohama, JP;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 55/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

A bellows () of a dust boot () having large diameter parts () and small diameter parts () disposed alternately covers a piston rod (R) projecting from a cylinder (C). A bump stopper (B) fixed to the cylinder (C) projects into the bellows () as a projecting portion. The bellows () comprises a first section (M) which passes a projecting end of the projecting portion according to the elongation and contraction of the piston rod (R) and a second section (L) located therebelow. By making the small diameter parts in the second section (L) have a smaller inner diameter than the small diameter part located at a boundary between the first section (M) and the second section (L), the bellows () can be made slim without interfering with the bump stopper (B).


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