Pedal mechanism for a bicycle having the pedal crank radially mo

Details Pedal mechanism for a bicycle having the pedal crank radially mo Pedal mechanism for a bicycle having the pedal crank radially mo

1986-04-24

1987-11-17

Kundrat, Andrew V.

Machine element or mechanism

Elements

Cranks and pedals

745943, G05G 114

Patent

active

047065168

ABSTRACT:
This invention relates to a pedal mechanism for a bicycle with variable leverage pedal cranks. Two guide pulley assemblies fixedly mounted on the frame of a bicycle each comprise two relatively rotatable members cooperating with an arrangement of a chain sprocket, a flange, pins and the pedal cranks so that the lengths of the cranks varies between minimum and maximum values during each rotation of the cranks. The chain sprocket has fifty-two teeth and a free wheel sprocket eighteen teeth, the driving ratio being 2.88. Owing to the variation in driving arm of the cranks, the power consumption can be lowered and speed can be increased up to 20% compared with conventional pedal mechanisms.

REFERENCES:
patent: 653873 (1900-07-01), Malone
patent: 703613 (1902-07-01), Robinson
patent: 4125239 (1978-11-01), Berclaz et al.
patent: 4281845 (1981-08-01), Brown
patent: 4446754 (1984-05-01), Chattin
patent: 4519271 (1985-05-01), Chattin

Affiliated with

Also associated with

Rating

Pedal mechanism for a bicycle having the pedal crank radially mo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pedal mechanism for a bicycle having the pedal crank radially mo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pedal mechanism for a bicycle having the pedal crank radially mo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1442165