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:
Jul. 14, 1998
Filed:
Jul. 10, 1997
Applicant:
Inventor:
Kouji Obara, Kanagawa, JP;
Assignee:
Nippon Thompson Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16C / ; G01B / ;
U.S. Cl.
CPC ...
384-8 ; 32420724 ; 384 43 ;
Abstract
A ball spline bearing having a detection device which detects the relative positions and so forth of a spline shaft and outer cylinder by forming a plurality of narrow grooves 21c in spline shaft 21 and arranging extremely narrow and linear scales 31 and 32 in these grooves.