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:
Apr. 19, 2011
Filed:
May. 31, 2005
Takafumi Yoshida, Nagasaki, JP;
Katsuhiko Takita, Nagasaki, JP;
Hisao Miyake, Nagasaki, JP;
Masaaki Shibata, Nagasaki, JP;
Keita Nakashima, Nagasaki, JP;
Takafumi Yoshida, Nagasaki, JP;
Katsuhiko Takita, Nagasaki, JP;
Hisao Miyake, Nagasaki, JP;
Masaaki Shibata, Nagasaki, JP;
Keita Nakashima, Nagasaki, JP;
Mitsubishi Heavy Industries Ltd., Tokyo, JP;
Abstract
A slewing bearing includes: an outer ring section having first and second circumferential grooves formed on an inner circumferential surface in parallel; an inner ring section formed on an inner side of the outer ring section and having first and second circumferential grooves formed on an outer circumferential surface in parallel in correspondence to the first and second circumferential grooves of the outer ring section; a first row of rolling elements provided in the first circumferential groove of the outer ring section and the first circumferential groove of the inner ring section; and a second row of rolling element provided in the second circumferential groove of the outer ring section and the second circumferential groove of the inner ring section. The inner ring section rotates via the first and second rolling element rows around a rotation axis in a relatively opposite direction to the outer ring section.