Equipment enclosure structure

Claim 1

AN ENCLOSURE FOR EQUIPMENT TO BE MOUNTED THEREIN, AN ENCLOSURE FRAME INCLUDING UPRIGHT RECTANGULAR CORNER FRAME MEMBERS SPACED APART AND DISPOSED GENERALLY IN PARALLEL PLANES, SAID UPRIGHT CORNER FRAME MEMBERS EXTENDING ABOUT SIDES, TOP AND BOTTOM OF THE ENCLOSURE, AND TRANSVERSE FRAME MEMBERS DISPOSED BETWEEN SAID UPRIGHT CORNER FRAME MEMBERS IN ASSEMBLY THEREWITH AT THE AREA OF EACH OF THEIR FOUR CORNERS, SAID TRANSVERSE FRAME MEMBERS EACH HAVING ITS OPPOSITE ENDS DISPOSED IN ENDWISE FITTED ENGAGEMENT ABOUT THE ASSOCIATED OPPOSITE CORNERS OF THE SPACED RECTANGULAR FRAME MEMBERS, EACH OF SAID FRAME MEMBERS BEING HOLLOW HAVING DIVERGING SIDE FRAME PORTIONS OPEN AT AN INNER CORNER WHICH CORNER IS FURTHER DEFINED BY OUTER AND INNER PAIRS OF ANGULAR RELATIVELY NARROW STEPPED FLANGES GENERALLY AT RIGHT ANGLES TO EACH OTHER WITH SAID PAIRS OF ANGULAR RELATIVELY STEPPED FLANGES BEING CONNECTED TO SAID SIDE FRAME PORTIONS, THE INNER AND OUTER PAIRS OF SAID NARROW STEPPED FLANGES ON SAID UPRIGHT CORNER FRAME MEMBERS AND TRANSVERSE MEMBERS DEFINING SEATS FOR EDGES OF CABINET PANELS, THE PAIRS OF ANGULAR RELATIVELY NARROW STEPPED FLANGES ON SAID UPRIGHT AND TRANSVERSE FRAME MEMBERS AT ENCLOSURE FRAME CORNERS OF SAID FRAME BEING FITTED TOGETHER AND COMPRISING MEANS BY WHICH THE UPRIGHT AND TRANSVERSE FRAME MEMBERS ARE SECURED TOGETHER SO AS TO BE SUBSTANTIALLY FREE OF TORSIONAL TWISTING AND MOVEMENT OUT OF NORMAL PLANES.