door panel is held in a fully closed position until the latch is released in the case of a striker plate once the intersection of convex back surface 87 with convex front surface 84 of bolt 80 moves beyond the edge of the striker cavity the restoring force of the coil springs 91 92 quickly returns latch bolt 80 to its previous extended at rest position at this point the bolt is positioned in the striker plate cavity and the door panel is held in a fully closed position until the latch is released with reference to fig2 and 6 the latch is in its closed position when handle 50 is substantially flush with rim 30 and the push button or push cap 118 is fully extended in the closed position shaft coil spring 122 is extended urging push button or push cap 118 to contact an outward travel limiting stop shown in fig2 as flange 119 contacting an inner portion of the door or closure device in which the assembly is installed shaft 110 is in a fully retracted position when push button or push cap 118 is urged against its outward travel limiting stop when fully retracted shaft 110 is not in contact with inward facing surface 51 of handle 50 in the closed position bolt 80 is urged to its fully extended position by bolt coil springs 91 92 and the travel of bolt 80 in the extended direction is limited by contact between cavity wall 34 adjacent bolt aperture 27 and bolt flanges.