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.:
Date of Patent:
Mar. 19, 2024
Filed:
Mar. 27, 2019
Applicant:
Smc Corporation, Chiyoda-ku, JP;
Inventors:
Hisashi Yajima, Tsukuba, JP;
Motohiro Sato, Toride, JP;
Tsuyoshi Sasaki, Tsukubamirai, JP;
Koji Hara, Tsukubamirai, JP;
Kouichirou Kanda, Tsukuba, JP;
Assignee:
SMC CORPORATION, Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23Q 3/154 (2006.01); B25J 15/06 (2006.01); H01F 7/02 (2006.01);
U.S. Cl.
CPC ...
B23Q 3/1546 (2013.01); B25J 15/0608 (2013.01); H01F 7/0257 (2013.01); H01F 7/02 (2013.01);
Abstract
A magnet chuck has a piston assembly including a tube shaped permanent magnet and a core yoke able to move on the interior of a cylinder tube. The permanent magnet is provided on the outer periphery of the core yoke, is magnetized in the radial direction, and a magnetic sensor is attached to the side surface of the cylinder tube.