Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Reexamination Certificate
2011-04-12
2011-04-12
Schwartz, Christopher P (Department: 3657)
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
Reexamination Certificate
active
07922263
ABSTRACT:
In a braking apparatus for a vehicle, an input piston and a pressurizing piston are movably supported inside a cylinder, thereby sectioning a first pressure chamber, a second pressure chamber, and a third pressure chamber, the second pressure chamber and the third pressure chamber communicating with each other through a communicating path. An ECU causes a control hydraulic-pressure that is adjusted by first and second liner valves to act on the second pressure chamber from the third pressure chamber, thereby assisting the pressurizing piston to enable to output control hydraulic-pressure from the first pressure chamber. A counterforce chamber whose volume decreases as the input piston moves forward is provided inside a cylinder, and a counterforce giving mechanism that can give an operation counterforce to a brake pedal through the input piston by deforming corresponding to decrease of the volume of the counterforce chamber is provided inside the input piston.
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German Office Action for application No. 11 2007 002 668 5-21 mailed Nov. 26, 2010, with English translation.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Schwartz Christopher P
Toyota Jidosha & Kabushiki Kaisha
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