Patent ID: 6694746
Filing Date: 2004-02-24
Classification: F02C,F05D,F16K,Y10T

Abstract:
An air turbine starter valve for controlling start air flow to an air turbine starter, the valve comprising:A valve body with an interior surface defining an inlet, an outlet and a passageway therebetween for start air flow; A valve gate mounted in the passageway for movement between an open and a closed position; An actuator operably coupled to the valve gate, the actuator including: A housing having an internal surface; A piston slidably mounted within the housing to move between a first position and a second position, whereby the piston has an upper surface cooperatively defining a chamber with the housing, the chamber being variable in volume depending on the location of the piston, but having a smaller volume when the piston is in its first position; and An opening in the housing to provide fluid communication to the chamber; A regulator mechanism operatively connected to the opening in the housing to selectively provide air flow to the chamber, and An arm mechanism operatively connected between the piston to the valve gate; and Wherein the volume of the chamber is less than 0.1 cubic inches when the piston is in the first position.