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.:

US 7299739 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 27, 2007

Filed:

Jan. 29, 2004
Applicants:

Akio Nakata, Tokyo, JP;

Masakazu Tetsuka, Tokyo, JP;

Inventors:

Akio Nakata, Tokyo, JP;

Masakazu Tetsuka, Tokyo, JP;

Assignee:

Koganei Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 15/26 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fluid pressure cylinder has a piston rodfixed to a pistonand projecting outside a cylinder body. A lock surfaceinclining to a radial direction of the piston rodis formed in an engagement memberprovided in the piston rod. A lock rodreciprocating in an about right-angle direction to the piston rodis built into a lock cylinderprovided in the cylinder body. The lock rodis provided with: a large-diameter sectionfitted into a guide holeformed in the lock cylinder; and a slide contact sectionprovided in the large-diameter sectionvia a constriction section. The slide contact sectioncontacts with a radial-inner portion of the lock surfacewhen the lock rodcomes nearest to the piston rod


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