Patent ID: 6745738
Filing Date: 2004-06-08
Classification: F01L

Abstract:
A pneumatic powered valve spring apparatus for use in combination with a reciprocating valve having a first position seated in a valve seat and a second position above said seat, comprising:a static housing, said static housing having a static chamber formed therein; a dynamic housing, said dynamic housing having a dynamic chamber formed therein; means for engagement of said dynamic housing with a valve stem; said dynamic housing translateably engaged with said static housing with said static chamber in sealed communication with said dynamic chamber; said dynamic housing having a first position, adjacent to said static housing and a second position translated away from said dynamic housing; a conduit in sealed communication with said static chamber; control means engaged with said conduit, said control means having a first state communicating pressurized gas to said static chamber and a second state venting said static chamber through said conduit; said dynamic housing moving in a first direction from said first position to said second position when said control means is in said first state thereby translating said valve stem in said first direction; and said dynamic housing moving in a second direction from said second position to said first position when said control means is in said second state thereby translating said valve stem a distance in said second direction substantially equal to the distance traveled by said dynamic housing from said second position to said first position.