Patent ID: 6761420
Filing Date: 2004-07-13
Classification: B81B,F15C,F16K,Y10T

Abstract:
An anti-lock brake system, comprising:a wheel speed sensor for sensing the speed of a wheel; a computer for receiving information from said wheel speed sensor; and a microvalve adapted for receiving electrical signals from said computer; wherein said microvalve comprises a first, second and a third layer; said first layer defining a first port for receiving fluid from a fluid source; one of said first and second layers defining a second port for receiving and/or delivering fluid from the wheel; said second layer defining a plane and a first displaceable member displaceable to a position between and including an open and a closed position, parallel to said plane, relative to said first port and in response to the signal from said computer; and said second layer further defining a second displaceable member displaceable parallel to said plane, to a position between an open and a closed position, relative to said second port, and in response to said signal from said computer.