Ceiling access opening and bracket therefor

Claim 1

A CLOSURE ASSEMBLY FOR AN ACCESS OPENING IN A TILED SUSPENDED CEILING OR THE LIKE, COMPRISING IN COMBINATION A TILE HAVING A UNI-PLANAR BOTTOM FACE CORRESPONDING IN SIZE AND SHAPE TO SAID ACCESS OPENING, SAID TILE HAVING A FORWARD EDGE, A REAR EDGE AND TWO SIDE EDGES, SAID FORWARD EDGE OF SAID TILE BEING INDENTED ALONG ITS ENTIRE EXTENT TO DEFINE A GENERALLY HORIZONTAL STEP OVERLYING A PORTION OF SAID BOTTOM FACE, SAID REAR EDGE HAVING ALONG ITS ENTIRE EXTENT A GENERLALY HORIZONTAL PROJECTION EXTENDING BEYOND THE REAR MARGINAL EDGE OF SAID BOTTOM FACE, SAID SIDE EDGES BEING DEVOID OF PROJECTIONS EXTENDING BEYOND SAID BUTTOM FACE, SAID TILE BEING PERFORATED BY AN APERTURE ADJACENT SAID FORWARD EDGE; A BOLT EXTENDING THROUGH SAID APERTURE; A NUT THREADED ON SAID BOLT AND SUPPORTING SAID TILE FROM UNDER SAID BUTTOM FACE; A BRACKET HAVING A BOLT-HOLDING TONGUE, SAID BOLTHOLDING TONGUE BEING PERFORATED BY AN APERTURE THROUGH WHICH SAID BOLT EXTENDS, AND MEANS FOR CONNECTING SAID BOLT-HOLDING TONGUE TO A FIXED STRUCTURAL MEMBER, SAID MEANS CONNECTING SAID TONGUE TO A STRUCTURAL MEMBER COMPRISING A GENERALLY S-SHAPED ADAPTER CLIP DEFINING TWO OPPOSITELY-DIRECTED CONSTRICTED CHANNELS, ONE OF SAID CONSTRICTED CHANNELS FRICTIONALLY ENGAGING A PROJECTING MEMBER INTEGRALLY CONNECTED TO SAID BOLT-HOLDING TONGUE AND THE OTHER OF SAID CONSTRICTED CHANNELS FRICTIONALLY ENGAGING A FIXED STRUCTURAL MEMBER OF SHEET METAL IN THE NATURE OF A CLIP-STRIP.