Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1997-03-20
1999-03-16
Bonck, Rodney H.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74471XY, 7447323, 74489, G05G 9047
Patent
active
058816020
ABSTRACT:
A dual derailleur bicycle gearshift comprises a first cable pull member pivotally secured to a support for rotation about a first axis and a second cable pull member pivotally secured to the first cable pull member for rotation about a second axis perpendicular to the first axis, wherein the second cable pull member defines a single actuator that is centered on both axes for pivotal movability within a first arc located within a first plane that extends axially of and contains the first axis to rotate the second cable pull member about the second axis and pivotal movability within a second arc located within a second plane that extends axially of and contains the second axis to rotate the first cable pull member about the first axis. In a handlebar mounted embodiment the first cable pull member rotates about a longitudinal axis of the bicycle's handlebar and the actuator is a yoke centered on both axes and having one end defining the second cable pull member. In a handlebar stem mounted embodiment the actuator is a lever and the first cable pull member is notched for centering the lever on both axes. In each embodiment a first bracket member stationary with the support provides anchorage for a casing associated with a cable pulled by the first cable pull member, and a second bracket member rotatable with the first cable pull member provides anchorage for a casing associated with a cable pulled by the second cable pull member.
REFERENCES:
patent: 3808907 (1974-05-01), Yamaguchi
patent: 4132296 (1979-01-01), Evett
patent: 4201095 (1980-05-01), Cirami
patent: 4267742 (1981-05-01), Cabeza
patent: 4270402 (1981-06-01), Nagano
patent: 4279174 (1981-07-01), Ross
patent: 4304143 (1981-12-01), Nagano
patent: 5400675 (1995-03-01), Nagano
Bonck Rodney H.
Parekh Ankur
LandOfFree
Gearshift for dual derailleur 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 Gearshift for dual derailleur bicycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gearshift for dual derailleur bicycle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-808409