Sound insulating building structure with movable partition

Claim 1

IN A SOUND INSULATING BUILDING STRUCTURE DEFINING AN ENCLOSED SPACE THEREIN, SOUND INSULATING APPARATUS EXTENDING ACROSS SAID STRUCTURE FULLY TO THE WALLS, THEREOF, SAID APPARATUS COMPRISING A FRAME OF SOUND INSULATING CONSTRUCTION EXTENDING TO TO THE WALLS AND DEFINING AN OPENING THEREIN, A SOUND BLOCKING MEMBER WHICH IS SUBSTANTIALLY IMPERVIOUS TO SOUND WAVES MOUNTED IN SAID FRAME ENTIRELY ACROSS SAID OPENING, SOUND ATTENUATING MEANS POSITIONED BETWEEN THE EDGES OF SAID MEMBER AND SAID FRAME TO SUBSTANTIALLY PREVENT THE PASSAGE OF SOUND WAVES BETWEEN SAID FRAME AND THE EDGES OF SAID MEMBER, SAID SOUND ATTENUATING MEANS COMPRISING AN OPEN POCKET FORMED IN SAID FRAME ALONG AT LEAST ONE EDGE OF SAID MEMBER INTO WHICH SAID MEMBER EXTENDS FOR A SUBSTANTIAL DISTANCE IN SPACED RELATIONSHIP TO THE SIDES OF SAID POCKET TO ATTENUATE THE PASSAGE OF SOUND WAVES AROUND SAID EDGE OF SAID SOUND BLOCKING MEMBER.