Motorcycle brake system having dual master cylinder proportionin

Details Motorcycle brake system having dual master cylinder proportionin Motorcycle brake system having dual master cylinder proportionin

1993-03-03

1994-12-13

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 961, 303 965, A62L 308

Patent

active

053724089

ABSTRACT:
A brake apparatus for motorcycles with a master cylinder connected directly to a front wheel brake cylinder and connected through pressure control valves to a rear wheel brake cylinder. An adjustment varies the ratios of application of pressures to front and rear brakes through variation in valve spring settings to accommodate variations in load. A sensing system may be employed to determine application of braking force to the front wheel. This system may take the form of a mechanical servo mounting the front brake calipers, a direct pressure application in the master cylinder or a transducer measuring brake pressure to the front wheel. When braking to the front wheel is sensed above a selected threshold, the ratio of brake pressure of the front to rear wheels is reduced. A orifice restriction associated with the pressure control valves reduces sensitivity to variation in braking due to valve action.

REFERENCES:
patent: 3159729 (1964-12-01), Stelzer et al.
patent: 3459588 (1969-08-01), Green et al.
patent: 4239294 (1980-12-01), Burgdorf
patent: 4441590 (1984-04-01), Giorgetti
patent: 4465322 (1984-08-01), Hayashi
patent: 4494800 (1985-01-01), Hayashi
patent: 4501451 (1985-02-01), Reynolds et al.
patent: 4598954 (1986-07-01), Hayashi
patent: 4626038 (1986-12-01), Hayashi et al.

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