Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1981-12-23
1984-04-03
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188106R, 188344, B60T 826, B60T 1120
Patent
active
044404522
ABSTRACT:
A hydraulic braking system for two-wheeled vehicles, with the system including a main brake cylinder associated with a rear axle braking circuit and a main brake cylinder associated with a front axle braking circuit, as well as with a braking force distribution device. The braking force distribution device is adapted to produce, in a specified ratio, a pressurization of both the rear axle braking circuit and front axle braking circuit when the main brake cylinder associated with the rear axle braking circuit is actuated. When the main brake cylinder associated with the front axle braking circuit is simultaneously manually actuated and the main brake cylinder of the rear braking circuit is actuated by a brake pedal, the force distribution device produces a reduction of the rear axle braking pressure. The main brake cylinder associated with the rear axle braking circuit is constructed as a tandem main brake cylinder having a primary pressure chamber delimited in an axial direction by a primary piston and a float mounted secondary piston. The secondary pressure chamber of the tandem main brake cylinder is associated as an output pressure chamber with the rear axle braking circuit. A piston of the main brake cylinder associated with the front axle braking circuit delimits an annular pre-pressure chamber connected in a communicating fashion with the output pressure chamber of the front axle braking circuit when the piston is in a resting position. After a small fraction of a working stroke, the communication is sealed off. A hydraulic feedback circuit is provided which includes a piston exerting a restoring force proportional to the front axle braking pressure upon the secondary piston of the tandem main brake cylinder.
REFERENCES:
patent: 3839868 (1974-10-01), Watanabe
patent: 4058346 (1977-11-01), Burckhardt
patent: 4176886 (1979-12-01), Watanabe
patent: 4239294 (1980-12-01), Burgdorf
patent: 4274518 (1981-06-01), Berisch
patent: 4289359 (1981-09-01), Lupertz et al.
Butler Douglas C.
Daimler-Benz Aktiengesellschaft
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