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:
Nov. 21, 2012
Mando Corporation, Gyeonggi-do, KR;
Hong Youp Son, Gyunggi-do, KR;
Mando Corporation, Pyeongtaek-si, Gyeonggi-do, KR;
Abstract
An electric-bicycle driving apparatus includes a speed-change mode operator to output a low-speed or high-speed mode signal, a controller to output a first or second control signal corresponding to the low-speed or high-speed mode signal, a first motor driver to output a first motor-driving signal to drive a motor in a low-speed mode in response to the low-speed mode signal, a second motor driver to output a second motor-driving signal to drive the motor in a high-speed mode in response to the high-speed mode signal, a motor-drive-load booster to boost load of the second motor-driving signal using battery power under control of the controller in response to the high-speed mode signal, and a motor speed-change switching unit to selectively receive a switching enable signal from the controller so as to be turned on to provide the second motor-driving signal having the boosted load to the motor.