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. 27, 2005
Filed:
Dec. 04, 2002
Naomi Shirasawa, Nagano-ken, JP;
Naomi Shirasawa, Nagano-ken, JP;
Harmonic Drive Systems, Inc., Tokyo, JP;
Abstract
A two-stage cross roller bearing () includes a first cross roller bearing () and a second cross roller bearing () that are disposed concentrically along a plane that is perpendicular to the bearing axis. The inner ring of the first cross roller bearing () and the outer ring of the second cross roller bearing () are formed of a single ring-shaped member (), with an inner ring-side raceway groove () of the first cross roller bearing being formed on the circular outer circumferential surface of the ring-shaped member and an outer ring-side raceway groove () of the second cross roller bearing being formed on the circular inner circumferential surface of the ring-shaped member. A small, compact, and flat multistage cross roller bearing is realized.