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:
Dec. 10, 2002
Filed:
Mar. 12, 2001
Applicant:
Inventors:
Motohiro Sato, Ibaraki, JP;
Hiroshi Miyachi, Ibaraki, JP;
Assignee:
SMC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23B 3/110 ; B23Q 3/152 ; F01B 9/00 ;
U.S. Cl.
CPC ...
B23B 3/110 ; B23Q 3/152 ; F01B 9/00 ;
Abstract
In a cylinder having a piston and a cylinder body having a piston chamber in which said piston is slidably accommodated, a guide shaft extending toward the piston chamber is provided on a head-side end wall of the cylinder body , and the piston includes a guide hole in which the guide shaft is accommodated. A plurality of grooves and respectively extending in axial directions are provided between an outer peripheral surface of the guide shaft and an inner peripheral surface of the guide hole . A plurality of steel balls are provided between the grooves and