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. 09, 2003
Filed:
Feb. 27, 2002
Yuichi Shibukawa, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A continuously variable transmission ( ) has a first helical gear ( A) for its rotation output. The fixed speed ratio transmission ( ) has a second helical gear ( B) for its rotation output. The third helical gear ( ) rotates according to the difference of the rotation speeds of the first helical gear ( A) and second helical gear ( B). These helical gears rotate on a same rotation shaft ( ). One of the three helical gears positioned between the other two helical gears applies a bending moment on the rotation shaft ( ) due to a radial force given by a gear meshed therewith. The direction of the tooth trace of the other two helical gears is set so that at least one of them produces a bending moment in an opposite direction to the first bending moment.