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:
Jun. 16, 2009

Filed:

Sep. 01, 2006
Applicants:

Takeshi Nakada, Tsuchiura, JP;

Kazuhiro Tanaka, Chikushino, JP;

Yasuo Sakurai, Kazo, JP;

Hiromichi Kajikawa, Ibaraki-ken, JP;

Takeshi Seo, Nagareyama, JP;

Inventors:

Takeshi Nakada, Tsuchiura, JP;

Kazuhiro Tanaka, Chikushino, JP;

Yasuo Sakurai, Kazo, JP;

Hiromichi Kajikawa, Ibaraki-ken, JP;

Takeshi Seo, Nagareyama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B 21/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A cylinder apparatus comprises a piston which is displaced along a cylinder tube under the driving action of a driving section provided for a main cylinder body, while the piston is displaced under the pressing action of a pressure fluid supplied to the cylinder tube. The amount of the pressure fluid supplied to the main cylinder body is increased before a workpiece is engaged with a table section arranged at an end of the main cylinder body so that pressing force, which is applied to the piston, is increased. Accordingly, driving load, which is exerted on the driving section when the workpiece is engaged with the table section, is reduced.


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