Hydraulic bicycle brake system

Details Hydraulic bicycle brake system Hydraulic bicycle brake system

1974-04-11

1976-11-23

Halvosa, George E. A.

Brakes

Operators

Fluid pressure

60562, 60581, 92 92, 188 726, 188345, 188349, B60T 1124, B62L 302

Patent

active

039931749

ABSTRACT:
Caliper type bicycle brakes for the front and rear wheel are actuated simultaneously by a single actuator assembly mounted adjacent the handlebar. Hydraulic fluid under pressure is delivered to the brakes through two self-contained hydraulic circuits, one for the front brake and one for the rear brake. The brake system includes a device for applying a greater braking force at the front wheel than at the rear wheel. In an alternate embodiment the brake system is actuated by the chain drive system of the bicycle. Improved brake shoe elements and a device for wiping water from the wheel rim for enhanced wet weather braking are also disclosed.

REFERENCES:
patent: 869948 (1907-11-01), Turner
patent: 2456869 (1948-12-01), Fowler
patent: 2830679 (1958-04-01), Butler
patent: 2885034 (1959-05-01), Holin
patent: 3554334 (1971-01-01), Shimano et al.
patent: 3776333 (1973-12-01), Mathauser

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