Tension device of bicycle derailleur

Details Tension device of bicycle derailleur Tension device of bicycle derailleur

2011-03-15

2011-03-15

Kim, Sang (Department: 3654)

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

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

C474S092000, C474S115000, C474S117000

Reexamination Certificate

active

07905805

ABSTRACT:
A tension device for a drive chain of a bicycle including a first pulley having a first rotational axis swingable around a swing center, and a second pulley having a second rotational axis movable along a movable direction to change a distance between the first rotational axis and the second rotational axis. The first pulley is arranged to be forced around the swing center to apply tension to the drive chain, and the second pulley is arranged to be forced along the moving direction to apply tension to the drive chain.

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