Freewheel assembly for bicycle

Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including coaxial pulleys shiftable axially to align...

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474160, 474164, F16H 906

Patent

active

054803578

ABSTRACT:
A freewheel of a bicycle includes a number of sprockets engaged on a sprocket ring. An outer thread is formed in the outer portion of the sprocket ring for engaging with a lock nut. The lock nut includes a number of serrated teeth formed on one side surface. An outermost sprocket includes an outer surface having an annular shoulder so as to define an annular surface. The annular surface includes a number of serrated teeth for engaging with the serrated teeth of the lock nut so as to solidly and stably securing the sprocket to the lock nut.

REFERENCES:
patent: 4102215 (1978-07-01), Nagano et al.
patent: 4230212 (1980-10-01), Tsuchie et al.
patent: 4296850 (1981-10-01), Isobe
patent: 4580670 (1986-04-01), Nagano
patent: 4869710 (1989-09-01), Iwasaki
patent: 5292286 (1994-03-01), Lan

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