Multiple speed transmission for bicycles

Details Multiple speed transmission for bicycles Multiple speed transmission for bicycles

1985-08-07

1987-01-06

Leppink, James A.

Endless belt power transmission systems or components

Pulley with expansible rim means or pulleys with alternately...

Structure for variably adjusting radius of rim section

F16H 902

Patent

active

046344063

ABSTRACT:
This invention is a variable speed transmission member for bicycles for engagement with a positive drive belt. It includes a variable radius sprocket and a means to control its effective radius. The variable radius sprocket is a rotatable disc with a plurality of radial slots therein. A slidable sprocket segment is mounted in each slot. Each segment has a spring biased retaining means to lock it at a particular radial location. The means to control the effective radius of the segments comprises a plurality of pivotal prongs positioned so that they can be pivoted, under manual control, into the path of the segments to push the segments to a different radial location.

REFERENCES:
patent: 1424327 (1922-08-01), Trout
patent: 3798989 (1974-03-01), Hunt
patent: 3861227 (1975-01-01), Hunt
patent: 4030373 (1977-06-01), Leonard
patent: 4529394 (1985-07-01), Miro

Affiliated with

Also associated with

Rating

Multiple speed transmission for bicycles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple speed transmission for bicycles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple speed transmission for bicycles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-681985