Patent ID: 8201775

Claim:
A decompression element for pressure equalization in a cabin of an aircraft, comprising: a decompression element frame; a flap; one of a hinge element and at least one bearing element for fitting the flap to the decompression element frame, wherein the flap is rotatable in two rotational directions away from a closed position in which the flap closes flow through the decompression element frame; at least one projecting element coupled to the flap so as to project away from the flap, at least one of the projecting elements including an engagement area; and a release device coupled to the decompression element frame and including a release device housing, a pressure element moveable relative to the release device housing, a spring biasing the pressure element into contact with the engagement area of the at least one projecting element when the flap is in the closed position, and an adjusting screw coupled to the release device housing and operable to adjust the bias applied to the pressure element, thereby defining a predetermined pressure difference across the flap at which forces applied by the predetermined pressure difference will overcome the bias applied to the pressure element to move the flap to an open position and enable flow through the decompression element frame, wherein when a pressure difference across the flap in either direction exceeds the predetermined pressure difference, the engagement area is released from contact by the pressure element such that the flap may rotate from the closed position to the open position.