Patent ID: 7357154
Filing Date: 2008-04-15
Classification: F16K,Y10T

Abstract:
1. A multi-stage positioning assembly comprising: a housing; a footstock received in said housing, said footstock having a through hole formed therein, said footstock having a bottom surface; a brake valve handle having a middle section extending through said through hole, said brake valve handle secured by a cross axle to said footstock, said brake valve handle having a vertical swayable top end so as to cause a displacement of a bottom end of said brake valve handle; a coupling disc having a top surface in close contact with said bottom surface of said footstock, said coupling disc movable relative to the swaying of said brake valve handle; a water control valve unit positioned at a bottom of said coupling disc; a first snapper movable relative to a movement of said brake valve handle, said first snapper having at least two pin joint ends formed therein; a second snapper cooperative with a displacement track of said first snapper, and said second snapper having a pin at an end thereof; and a flexible member cooperative with said second snapper so as to allow said pin to flexibly cooperate with the pin joint ends, said first snapper being a block, said top surface of said coupling disc having a groove formed therein, said first snapper received in said groove, the pin joint ends formed on a top surface of said first snapper, said second snapper having a cylindrical shape, said pin extending from a bottom of said second snapper, said footstock having a vertical chamber receiving said second snapper therein, said pin protruding from a bottom of said vertical chamber, said flexible member being a spring mounted over said second snapper, said vertical chamber having a spacer mounted in a top end thereof so as to limit a movement of said flexible member and said second snapper, said flexible member urging said second snapper resiliently downwardly.