192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1980-07-25
1982-06-01
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
188 2417, B62L 510
Patent
active
043323138
ABSTRACT:
A bicycle brake for a bicycle having a frame with a hub in which pedal cranks are rotatably mounted comprising a disc rotatably mounted on the hub for rotation with the cranks and a brake shoe pivoted to the frame and extending upwardly along the front of the rear tire of the bicycle and having a surface for engaging the tire upon actuation of the brake. The brake includes a ball clutch arm pivoted on the shoe and extending upwardly and forwardly toward the periphery of the disc. The arm has opposed walls between which the periphery of the disc extends and the walls have inwardly facing grooves that taper transversely and longitudinally in a rearward direction. A pair of balls is positioned in each groove between the disc and the respective wall and a spring yieldingly urges the shoe away from the tire such that when the pedal cranks are pedaled rearwardly, the balls travel rearwardly along the grooves to pivot the ball clutch arm and, in turn, the brake shoe bringing the brake shoe surface into frictional contact with the surface of the rear tire.
REFERENCES:
patent: 611073 (1898-09-01), Morrow
patent: 675288 (1901-05-01), Nash
patent: 4254848 (1981-03-01), Moss
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