Frame construction with panel and yieldable preformed separator therefor

Claim 1

IN COMBINATION, A PLURALITY OF OPERATIVELY INTERCONNECTED FRAME MEMBERS EACH HAVING AN INNER SURFACE MEANS DEFINING PART OF AN OPENING BOUNDED BY SAID FRAME MEMBERS, EACH OF SAID INNER SURFACE MEANS BEING INTERRUPTED BY A CHANNEL, SAID CHANNEL OF ONE OF SAID FRAME MEMBERS HAVING AN HOURGLASS-LIKE CROSS-SECTIONAL CONFIGURATION, SAID HOURGLASS-LIKE CHANNEL BEING DEFINED BY AN END WALL OF THE RESPECTIVE FRAME MEMBER AND A PAIR OF OPPOSED SIDE WALLS THEREOF, SAID END WALL BEING SPACED FROM SAID INNER SURFACE MEANS, EACH SIDE WALL BEING FORMED OF TWO SECTIONS, ONE PAIR OF ADJACENT SECTIONS OF SAID WIDE WALLS CONVERGING TOWARD EACH OTHER AS THEY EXTEND AWAY FROM SAID END WALL, THE OTHER PAIR OF ADJACENT SECTIONS OF SAID SIDE WALLS DIVERGING AWAY FROM EACH OTHER AS THEY APPROACH SAID INNER SURACE MEANS OF THE RESPECTIVE FRAME MEMBER, EACH SECTION OF SAID OTHER PAIR OF SECTIONS OF SAID SIDE WALLS HAVING A GROOVE, EACH SAID GROOVE BEING BOUNDED BY A PAIR OF ANGULARLY DISPOSED LIPS CONVERGING TOWARD EACH OTHER AS THEY EXTEND AWAY FROM THE RESPECTIVE SIDE WALL, ONE LIP OF EACH PAIR OF LIPS BEING ADJACENT SAID INNER SURFACE MEANS OF THE RESPECTIVE FRAME MEMBER AND THE OTHER LIP OF EACH PAIR OF LIPS BEING ADJACENT THE JUNCTURE OF THE TWO SECTIONS OF THE RESPECTIVE SIDE WAL, A PANEL MEANS DISPOSED IN SAID OPENING AND HAVING A PLURALITY OF EDGE MEANS RESPECTIVELY RECEIVED IN SAID CHANNELS OF SAID FRAME MEMBERS WHEREBY THE OVERALL SIZE OF SAID PANEL MEANS IS GREATER THAN SAID OPENING, AND RESILIENT HOLDING MEANS DISPOSED IN SAID CHANNELS TO HOLD SAID PANEL MEANS IN A FIXED POSITION RELATIVE TO SAID FRAME MEMBERS, SAID HOLDING MEANS DISPOSED IN SAID HOURGLASS-LIKE CHANNEL BEING HELD THEREIN BY BEING RECEIVED IN SAID GROOVES THEREOF.