Power-spring assist to pedals of bicycle

Details Power-spring assist to pedals of bicycle Power-spring assist to pedals of bicycle

1998-08-20

2000-04-25

Bucci, David A.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

280215, 280303, 474 69, F16H 5900, F16H 900, B62M 110

Patent

active

060538309

ABSTRACT:
A spring-assist drive for a pedal-operated rider-propelled vehicle such as a bicycle which makes use of a wind-up coil spring mounted within the frame of the bicycle as auxiliary power. The spring is selectively wound by the rider operating the pedals to turn a spindle on which is mounted a sprocket wheel. A chain from the sprocket wheel drives a pivoting gear assembly comprising a ratcheting sprocket and attached drive gear. In a preferred embodiment, the tension on the chain will be adjustable by a chain tension adjustment mechanism. The drive gear releasably engages a power gear mounted on a common hub with the spring. A brake band and drum assembly holds the energy in the spring until the brake is released by the rider, whereupon the spring unwinds to drive a sprocket wheel mounted on the common hub, which sprocket wheel is connected to a sprocket wheel mounted on the spindle, turning the rear wheel drive sprocket wheel and the rear wheel.

REFERENCES:
patent: 635664 (1899-10-01), Coursey et al.
patent: 1374797 (1921-04-01), Zaborsky
patent: 2638359 (1953-05-01), Crumble
patent: 4108459 (1978-08-01), Alvigini
patent: 4416464 (1983-11-01), Mattox
patent: 4655472 (1987-04-01), Pletscher
patent: 4878684 (1989-11-01), Lemle
patent: 5035678 (1991-07-01), Hageman

Affiliated with

Also associated with

Rating

Power-spring assist to pedals of 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 Power-spring assist to pedals of bicycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power-spring assist to pedals of bicycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-989496