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. 29, 2014
Filed:
Aug. 29, 2008
Rongsheng Xue, Chongqinq, CN;
Yupei Lin, Chongqing, CN;
Yunzhi Hao, Chongqing, CN;
Southwest University, Chongqing, CN;
Abstract
A cam self-adaptive automatic speed shift hub comprises a left hub frame (), a right hub frame (), a case body (), a power input device, a drive shaft (), a wheel () and a brake device (). The hub further includes a low-gear drive shaft (), a low-gear transmission mechanism positioned on the low-gear drive shaft (), and a cone-disc clutch cam self-adaptive speed shift assembly positioned on the drive shaft (), in which the low-gear drive shaft () positioned in the case body () is in rotation fit with the case body () and in parallel with the drive shaft (). Such a cam self-adaptive automatic speed shift hub can allow the motor/engine output power and vehicle running condition always in an optimal matching state, to achieve balance control between the vehicle driving torque and the comprehensive driving resistance.