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:
Jul. 25, 2006
Filed:
Aug. 30, 2004
Masashi Hori, Nukata-gun, JP;
Masamichi Watanabe, Kariya, JP;
Akihiko Takenaka, Anjo, JP;
Takahisa Yokoyama, Anjo, JP;
Takayuki Takeshita, Anjo, JP;
Yuzo Imoto, Chita-gun, JP;
Masashi Hori, Nukata-gun, JP;
Masamichi Watanabe, Kariya, JP;
Akihiko Takenaka, Anjo, JP;
Takahisa Yokoyama, Anjo, JP;
Takayuki Takeshita, Anjo, JP;
Yuzo Imoto, Chita-gun, JP;
Abstract
An internal planetary gear mechanism reduces a load applied to tooth surfaces of an external gear and an internal gear, a sliding portion such as a bearing and the like. By setting the amount of eccentricity α of an eccentric part to be larger than a theoretical value, a distance between the center of the external gear and the center of the internal gear is increased to allow the reduction of a loss in the bearing and on the tooth surfaces of the gears, and a mesh zone between the internal gear and the external gear can be reduced to decrease a part at a large pressure angle, thereby reducing a loss generated by a large pressure angle. As a result of reduction in the mesh zone between the external gear and the internal gear, rolling contact of the gears is maintained.