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. 05, 1999
Filed:
Dec. 23, 1996
Applicant:
Inventor:
Tetsuro Kadota, Shizuoka-ken, JP;
Assignee:
NTN Corporation, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
464145 ; 464906 ;
Abstract
A torsion spring received in a recess in an inner joint member is engaged at one end thereof with an engaging groove in a cage and at the other end with the wall surface of the recess, thereby constantly urging the cage against the inner joint member. As a result, a torque transmitting ball received in the pocket of the cage is elastically pressed against the narrow side (open side) of the wedge of the ball track by the cage, whereby the circumferential clearance between the guide groove and the torque transmitting ball disappears, preventing the rotation backlash of the joint.