Bicycle crank driven chain wheel assembly

Details Bicycle crank driven chain wheel assembly Bicycle crank driven chain wheel assembly

1995-02-20

1997-03-18

Schoeppel, Roger J.

Endless belt power transmission systems or components

Pulley having circumferentially spaced portions of drive...

474164, B62M 306

Patent

active

056117442

ABSTRACT:
A bicycle crank driven chain wheel assembly uses a special-shaped chain wheel. The chain wheel has portions of different driving radii. The portion having smaller driving radii is engaged in transmission when the bicycle runs on slopes, so that the bicycle rider can drive the bicycle with smaller force. The portion having larger driving radii carries out transmission when the bicycle runs on flat road, so that the bicycle can be speeded up. The crank is mounted in such a manner that it can rotate with respect to the chain wheel within predetermined range of angle, so as to select the corresponding portion of the chain wheel to be engaged in transmission in accordance with the resistance to motion of the bicycle or with the condition of the road on which the bicycle runs. Thus, a variable transmission can be automatically achieved corresponding to the resistance to motion of the bicycle or to the condition of the road.

REFERENCES:
patent: 3487706 (1970-01-01), Resener
patent: 3828621 (1974-08-01), Uchino
patent: 4599079 (1986-07-01), Chappell
patent: 5033991 (1991-07-01), McLaren
patent: 5035678 (1991-07-01), Hageman
patent: 5213550 (1993-05-01), Wu
patent: 5279524 (1994-01-01), Hilber

Affiliated with

Also associated with

Rating

Bicycle crank driven chain wheel assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bicycle crank driven chain wheel assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bicycle crank driven chain wheel assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1702041