Machine element or mechanism – Control lever and linkage systems – Hand operated
Reexamination Certificate
2004-11-05
2008-05-20
Ridley, Richard (Department: 3682)
Machine element or mechanism
Control lever and linkage systems
Hand operated
C074S500500
Reexamination Certificate
active
07373854
ABSTRACT:
A bicycle gear-shifting handgrip includes an inner tube fixedly fit over a bicycle handlebar and an outer tube rotatably fit over the inner tube. A casing that is fixed to the handlebar is fit over the inner tube and defines axially spaced front and rear chambers, both surrounding the outer tube. A toothed ring and a detent ring are axially stacked over each other and received in the front chamber. The toothed ring is rotatably fixed but axially movable in the front chamber and has a surface forming plural sets of teeth that are axially biased by a spring to respectively engage detent projections formed on the detent ring. The detent ring is rotatable in unison with the outer tube to induce a camming action between the teeth and the detent projection. A cable-driving ring is received in the rear chamber and is rotatable in unison with the outer tube for pulling a cable coupled to a bicycle derailleur.
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Johnson Matthew A.
Ridley Richard
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