Fluid handling – Systems – Supply and exhaust
Reexamination Certificate
2007-07-20
2011-11-22
Schneider, Craig (Department: 3753)
Fluid handling
Systems
Supply and exhaust
C137S081100
Reexamination Certificate
active
08061384
ABSTRACT:
In a pressure controller, a drive piston and pressure control valve are freely movably supported in a housing, the drive piston is supported by being energized and the pressure control valve is supported by being energized to make a pressure chamber and a decompression chamber communicatively connectible, the drive piston and the pressure control valve are moved by an electromagnetic force of a solenoid via a ring piston to make a hyperbaric chamber and the pressure chamber communicatively connectible and also an external piston is freely movably provided facing the drive piston and by making a control pressure acting on the external piston from a rear pressure chamber on a drive piston side equal to or greater than an external pressure acting from outside from an input unit, pressure control can properly be performed by readily moving a drive valve by pressure from outside when a power supply is defective.
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Extended Search Report issued Nov. 23, 2010 in Europe Application No. 07791104.8.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Schneider Craig
Toyota Jidosha & Kabushiki Kaisha
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