Bicycle and a friction device for controlling a clamping roller

Details Bicycle and a friction device for controlling a clamping roller Bicycle and a friction device for controlling a clamping roller

1997-05-02

1998-09-22

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 12BA, 192 486, 192 64, F16D 41067, F16D 4122, F16D 6702, B62L 500

Patent

active

058101390

ABSTRACT:
A friction device for controlling a clamping roller coupling for a drive device or for a back-pedal brake device connected to a bicycle hub can include a driving link with an ascending surface profile, at least one roll, a cage ring with cage arms, and an output link. The output link can be a brake jacket of the brake device. The brake device can be actuated by pedalling backword to tighten a friction spring on the hub axle. The friction spring can be realized as a loop spring, and a freewheel can be connected between the loop spring and the cage ring. The freewheel can include a first notch element non-rotatably connected to the cage ring, and a second notch element non-rotatably connected to the loop spring. When pedaling in the normal direction of rotation, the first and second notch elements are disengaged and torque is not transmitted to the loop spring. Upon back-pedalling, the first and second notch elements can non-rotatably engage to tighten the loop spring about the axle and transmit braking torque to the output link.

REFERENCES:
patent: 4046238 (1977-09-01), Mendoza-Orozco
patent: 4240533 (1980-12-01), Fukui
patent: 4323146 (1982-04-01), Fukui

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