Air diffuser assembly including latching means

Claim 1

AN AIR DIFFUSER ASSEMBLY COMPRISING, AN OUTER FRAME MEMBER MOUNTED IN AN OPENING IN THE WALL OF A ROOM, AND AN INNER REGISTER UNIT DETACHABLY MOUNTED ON SAID OUTER FRAME MEMBER, SAID INNER REGISTER UNIT HAVING A MARGINAL FRAME OVERLYING THE PERIPHERY OF SAID OPENING, REARWARDLY EXTENDING FLANGE PORTIONS AND A LATCHING DEVICE THEREON TO DETACHABLY MOUNT SAID UNIT ON SAID OUTER FRAME MEMBER, SAID LATCHING DEVICE INCLUDING A LATCHING MEMBER HAVING A REAR END THEREOF EXTENDING REARARDLY AND OUTWARDLY OF A SAID FLANGE PORTION AND TERMINATING ADJACENT SAID OUTER FRAME MEMBER, AND A FORWARD END EXTENDING FORWARDLY AND INWARDLY OF SAID FLANGE PORTION, YIELDABLE MEANS MOUNTING SAID LATCHING MEMBER ON SAID REGISTER UNIT AND BIASING IT IN A FORWARD DIRECTION, THEREBY RENDERING SAID LATCHING MEMBER MOVABLE WITH RESPECT TO SAID REGISTER UNIT, AND INTERENGAGING MEANS ON SAID OUTER FRAME MEMBER AND ON SAID LATCHING MEMBER TO LOCK OUTER FRAME FRAME MEMBER AND SAID INNER REGISTER UNIT TOGETHER WHEN SAID INTERENGAGING MEANS ARE ENGAGED, SAID LATCHING MEMBER BEING MOVABLE REARWARDLY AGAINST THE BIAS OF SAID YIELDABLE MEANS AND THEN INWARDLY THEREOF OF DISENGAGE SAID INTERENGAGING MEANS AND PERMIT REMOVAL OF SAID REGISTER UNIT.