Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...
Patent
1998-08-20
2000-11-07
Bucci, David A.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Including belt shiftable axially from one to another surface...
474 70, F16H 900
Patent
active
06142899&
ABSTRACT:
An electromotive gear-shift control apparatus for bicycles, which is to be used in a bicycle provided with a gear-shift apparatus; the driving force for such apparatus is furnished with the power of pedals thereof; a motor is used for determining the input of the gear shift; the apparatus comprises a housing, a transmission mechanism, a switch mechanism, and an index mechanism; the housing is a fixed member fastened on the frame of a bicycle; the power source for gear shift is supplied by the driving force of the power shaft between two pedals of bicycle; the switch mechanism is mounted in the housing; the input power form the transmission mechanism is converted, by means of the motor, into a displacement output required by gear shift; the index mechanism is mounted behind the switch mechanism inside the housing, and it is used for converting the vector displacement form the switch mechanism into a step-function output, which is then transmitted, through a cable, into the gear-shift apparatus of the bicycle.
REFERENCES:
patent: 3830521 (1974-08-01), Gardel et al.
patent: 4946425 (1990-08-01), Buhlmann
patent: 5328414 (1994-07-01), Restelli
patent: 5514041 (1996-05-01), Hsu
patent: 5681234 (1997-10-01), Ethington
Chang Chih-Wen
Hsu Pai-Hsiang
Liu Cheng-Wen
Tseng Ching-Huan
Bucci David A.
Charles Marcus
Industrial Technology Research Institute
Liauh W. Wayne
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