Patent ID: 7878214
Filing Date: 2011-02-01
Classification: B64D,B64G,Y10T

Abstract:
1. An ullage pressure regulator for a fuel tank, the regulator comprising: a body with an inlet for communication with a pressurant and an outlet for communication with a fuel tank ullage; a metering assembly disposed within the body and having a movable metering valve arranged to vary the opening of a metering orifice disposed between the inlet and the outlet, wherein the metering valve has a disk-shaped clapper with an elongated stem and has a separate valve seat mounted at an opening in the clapper for mating with the metering orifice; a coil disposed within the body and arranged to magnetically interact with the clapper to vary the position of the valve seat with respect to the metering orifice according to an input signal; and a controller disposed within the body and receiving a pressure signal corresponding to a pressure value inside the fuel tank, the controller processing the pressure signal relative to a control pressure value and setting the input signal to the coil based on the pressure value relative to the control pressure value.