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:
May. 15, 2007

Filed:

Feb. 04, 2002
Applicants:

Michikazu Miyamoto, Tsukuba-gun, JP;

Nobuo Harihara, Tsukuba-gun, JP;

Takayuki Sawada, Tsukuba-gun, JP;

Inventors:

Michikazu Miyamoto, Tsukuba-gun, JP;

Nobuo Harihara, Tsukuba-gun, JP;

Takayuki Sawada, Tsukuba-gun, JP;

Assignee:

SMC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A multistage stroke cylinder apparatus includes a main cylinder having a main piston and a main rod, an intermediate stop position setting mechanism for setting an intermediate stop position of the main piston, and a return position setting mechanism for setting a return position of the main piston. The intermediate stop position setting mechanism includes a stop position setting piston for coming in contact with the main piston, an auxiliary rod extending from the setting piston, a stopper mounted to a tip end of the auxiliary rod such that a mounting position of the stopper can be changed, and a contact portion a position of which can be changed by a contact position adjusting piston. The return position setting mechanism includes a return position setting piston and a position setting rod connected to the return position setting piston and having a tip end projecting behind the stop position setting piston.


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