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:
Sep. 09, 1997
Filed:
Dec. 13, 1995
NTN Corporation, Osaka, JP;
Abstract
A rotary unit with a built-in clutch which is short in its axial length. The rotary unit has an inner member having an outer periphery formed with a raceway groove and a pair of cylindrical surfaces on both sides of the raceway groove, and a cylindrical outer member having an inner periphery formed with a raceway groove and a pair of cylindrical surfaces on both sides of the groove. A retainer mounted between the inner and outer members has a plurality of circumferentially spaced pockets each housing a rolling member and sprag housing recesses provided alternately with the pockets. In each recess is received a sprag having both ends thereof resting on the opposing cylindrical surfaces and biased by a resilient member so that its inner and outer arcuate surfaces contact the cylindrical surfaces. By arranging the sprags and the rolling members alternately with each other in the circumferential direction, it is possible to reduce the entire axial length of the rotary unit.