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:
Jan. 06, 2004
Filed:
May. 01, 2002
Applicant:
Inventors:
Shigekazu Nagai, Adachi-ku, JP;
Akio Saitoh, Kawaguchi, JP;
Koji Sugano, Koshigaya, JP;
Masaru Saitoh, Tsukuba-gun, JP;
Assignee:
SMC Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 2/904 ;
U.S. Cl.
CPC ...
F16C 2/904 ;
Abstract
A direct drive bearing mechanism comprises guide plates which are installed to retaining recesses of a guide block and each of which has a plurality of hemispherical dimples, race members which are installed to a guide rail and each of which has a groove having a circular arc-shaped cross section, and a plurality of balls each of which rotates in each of the dimples and which slide along the grooves so that the balls do not circulate.