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:
Mar. 31, 2015
Filed:
Feb. 22, 2010
Hiroyuki Ogawa, Susono, JP;
Akira Murakami, Gotenba, JP;
Daisuke Tomomatsu, Susono, JP;
Takahiro Shiina, Susono, JP;
Hiroyuki Ogawa, Susono, JP;
Akira Murakami, Gotenba, JP;
Daisuke Tomomatsu, Susono, JP;
Takahiro Shiina, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A power transmission device includes first and second rings arranged opposite each other, having a common rotation center axis, and rotatable relative to each other; a plurality of planetary balls having rotation center axes parallel to the rotation center axis, and radially arranged between the first and second rings and around the rotation center axis; a transmission control unit configured to change a rotation ratio between the first and second rings by changing the respective contact points of the first and second rings and each of the planetary balls through tilting motion of each of the planetary balls; and a rotation restricting unit disposed between the planetary balls adjacent to each other.