Patent ID: 6560931
Filing Date: 2003-05-13
Classification: E05D,E05F,E05Y,Y10T

Abstract:
A universal hatch assembly for accessing an enclosure which comprises:a door having a first side and a second side; a frame defining an opening; hinge means mounting said door to said frame, said hinge means allowing pivotal movement of said door about a first axis between a first position in which said door covers said opening and a second position in which said door does not cover said opening; said first side of said door being disposed interiorly when said door covers said opening, said first side of said door having an elongated channel extending in substantially orthogonal relationship to said first axis; an operating lever for positioning said door, being pivotally connected to said frame at a first lever location and being dimensioned and configured for sliding meshing engagement with said elongated channel at a second lever location axially spaced from said first location; and counterbalance means for biasing the pivotal position of said operating lever with respect to said frame comprising a coil extension spring, said counterbalance means further including a cable extending from said coil extension spring and connecting to said operating lever at a third location spaced from said first and second locations.