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. 29, 2009
Filed:
Mar. 30, 2004
Yoshihide Kiyosawa, Nagano, JP;
Harushige Aoyagi, Nagano, JP;
Hiroki Hanaoka, Nagano, JP;
Harmonic Drive Systems, Inc., Tokyo, JP;
Abstract
A composite roll bearing (), comprising an outer ring () and an annular inner ring () of groove shape in cross section having first, second, and third receiving surfaces () facing the both end face inner peripheral portions () and the circular inner peripheral surface () of the outer ring () at specified intervals. A plurality of rollers () for thrust bearing are installed between one end face portion () of the outer ring () and the first receiving surface () of the inner ring () and between the other end face () of the outer ring () and the second receiving surface () of the inner ring (). A plurality of rollers () for radial bearing are installed between the circular inner peripheral surface () of the outer ring () and the third receiving surface () of the inner ring (). The rollers () are restricted to move in a thrust direction by retainer portions () formed at the inner ends of retainers () for the rollers () for thrust bearing.