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:
Jun. 24, 2014
Filed:
Jun. 10, 2011
Yet Chan, Kowloon, HK;
Yet Chan, Kowloon, HK;
Other;
Abstract
The present invention discloses a motorized driving device for mounting on a frame of a bicycle. The bicycle includes a pedal drive mechanism coupled to a chain for transferring a drive force to at least one chainwheel. The drive device includes a power source of rotary power and a power transmission mechanism for coupling between the pedal drive mechanism and the chain. The power transmission mechanism further includes a first unidirectional power transmission module and a second unidirectional power transmission module, such that an auxiliary power transmitted by the power transmission mechanism from the power source to the chain is independent from an pedal power transmitted by the power transmission mechanism from the pedal drive mechanism to the chain. A method of installing a motorized driving device on a standard bicycle is also disclosed. The motorized driving device in the present invention is suitable for installing on the frame of any ordinary bicycle, without having to alter the frame structure of the bicycle.