Multi-speed sprocket assembly for bicycle

Details Multi-speed sprocket assembly for bicycle Multi-speed sprocket assembly for bicycle

1989-10-30

1991-12-17

Britts, Ramon S.

Endless belt power transmission systems or components

Positive drive pulley or guide roll

And additional coaxial surface for engaging same belt in...

474164, F16H 5530

Patent

active

050731513

ABSTRACT:
In a multi-speed sprocket assembly for a bicycle having at least one large sprocket with teeth and one small sprocket with teeth disposed adjacent each other and selectively engageable with a drive chain of the bicycle consisting of a series of pivotably connected link plates, the improvement includes a chain receiving portion formed on a reference tooth of the large sprocket so as to receive a connecting portion of the link plates with diametrical clearance from a tooth space bottom of the large sprocket. The teeth of the small sprocket have such phase relationship relative to the chain receiving portion of the large sprocket that a tooth of the small sprocket positioned downstream relative to the reference tooth engages with the chain when the connecting portion of the chain is received by the chain receiving portion of the reference tooth. A cutout portion for preventing interference with the link plates is provided to a tooth of the small sprocket positioned within a path of the link plates of a chain portion positioned more upstream than a chain portion engaging the small sprocket and moving to the chain receiving portion. With the improvement, the chain shifting operation from small to large sprockets can be effected smoothly yet reliably.

REFERENCES:
patent: 3478614 (1969-11-01), Shimano
patent: 4268259 (1981-05-01), Segawa et al.
patent: 4348200 (1982-09-01), Terada
patent: 4773893 (1988-09-01), Su et al.

Affiliated with

Also associated with

Rating

Multi-speed sprocket assembly for bicycle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-speed sprocket assembly for bicycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-speed sprocket assembly for bicycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-833266