Fluid-pressure and analogous brake systems – Multiple control – Double heading
Patent
1987-07-08
1989-03-14
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple control
Double heading
60565, 60582, 60545, 188358, 188106P, 188151A, 303 2, 303 601, 303 962, 303 10, 303 15, 303 16, 303 92, 303114, 303 87, 303100, 303DIG3, 303 841, B60T 1118, B60T 808
Patent
active
048127779
ABSTRACT:
A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, including a master cylinder operated by a brake operating member, to generate a manually controlled braking pressure according to an operation of the brake operating member, a wheel brake cylinder for applying a brake to the wheel, a primary fluid passage for connecting the master cylinder to the wheel brake cylinder, an electrically controlled pressure generating device for generating an electrically controlled braking pressure to produce a required braking effect determined based on at least one of an operating force and an operating stroke of the brake operating member, and a switching device provided in the primary fluid passage, for applying the electrically controlled braking pressure to the wheel brake cylinder while disconnecting the master cylinder from the wheel brake cylinder when the electrically controlled pressure generating device is normally functioning, and for applying the manually controlled braking pressure to the wheel brake cylinder while disconnecting the electrically controlled pressure generating device from the wheel brake cylinder when the electrically controlled pressure generating device is not normally functioning.
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Butler Douglas C.
Toyota Jidosha & Kabushiki Kaisha
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