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:
May. 02, 2006
Filed:
May. 02, 2003
Applicants:
Jiro Mandokoro, Tsukuba-gun, JP;
Hiroshi Hanne, Tsukuba-gun, JP;
Takashi Yasuoka, Tsukuba-gun, JP;
Inventors:
Assignee:
SMC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B 31/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
Cylinder mechanisms are provided for driving three jaw members each of which includes a cylinder hole having a long circular cross section, a piston which slides in the cylinder hole and has a long circular cross section, and a piston rod extending from the piston. The cylinder mechanisms are disposed at a position in the chuck body which is adjacent to corresponding jaw member in a state in which an axis of the cylinder hole in a direction parallel to a moving direction of the jaw member and a shorter diameter of the cylinder hole is directed in an axial direction of the chuck body.