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. 05, 2019

Filed:

Dec. 07, 2015
Applicant:

Smc Corporation, Chiyoda-ku, JP;

Inventors:

Kouichirou Kanda, Tsukuba, JP;

Tsuyoshi Sasaki, Tsukubamirai, JP;

Hisashi Yajima, Tsukuba, JP;

Assignee:

SMC CORPORATION, Chiyoda-ku, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 11/00 (2006.01); B23Q 3/154 (2006.01);
U.S. Cl.
CPC ...
B25B 11/002 (2013.01); B23Q 3/1546 (2013.01);
Abstract

A magnet chuck includes a piston that is displaced inside a second sliding hole of a cylinder tube. One end surface of the piston abuts against a plate member when the piston reaches one displacement end point, whereas another end surface of the piston abuts against an entry member of a head cover when the piston reaches another displacement end point. At least one, and preferably both, of a first damper on the one end surface, and the second damper on the other end surface are disposed on the plate member.


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