Automatic derailleur shifter

Details Automatic derailleur shifter Automatic derailleur shifter

1985-03-04

1986-07-08

Leppink, James A.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

474 82, F16H 900

Patent

active

045990794

ABSTRACT:
An automatic shifter for a derailleur is disclosed which includes a pivot arm secured to the frame of the bicycle in stationary relationship, a shifter arm pivotally secured to the pivot arm in a manner to rotatively move relative to the frame, a follower attached to the shifter arm in rotative engagement, an operating spring biasing between the pivot arm and the shifter arm to continuously urge the follower against the upper run of the bicycle chain to depress the chain; a stabilizer interconnected between the pivot arm and the shifter arm in a manner to allow substantially unrestricted counter-clockwise rotation of the shifter arm and to deter or restrict clockwise rotative movement of the shifter arm and a flexible cable interconnecting the shifter arm with the derailleur whereby the derailleur will be automatically operated to index the chain across the small diameter cluster gears in response to rotational movement of the shifter arm as caused by interaction of the bicycle chain and the follower.

REFERENCES:
patent: 3613466 (1971-10-01), Houghton
patent: 3769848 (1973-11-01), McGuire
patent: 3929025 (1975-12-01), Perry
patent: 4061046 (1977-12-01), Lang
patent: 4343613 (1982-08-01), Leiter et al.
patent: 4469478 (1984-09-01), Weiss

Affiliated with

Also associated with

Rating

Automatic derailleur shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic derailleur shifter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic derailleur shifter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1449415