Prefabricated hollow building panel

Claim 1

A PREFABRICATED PANEL FOR ERECTION, WITHOUT MODIFICATION, INTO A BEARING WALL OF A BUILDING, AND INCLUDING: (A) IDENTICAL OPPOSITELY FACED END STUDS VERTICALLY DISPOSED AT OPPOSITE ENDS OF THE PANEL AND EACH HAVING OPPOSITE FACES SPACED TO RECEIVE OUTSIDE AND INSIDE SHEETS OF MATERIAL AND EACH HAVING RAISED AND DEPRESSED PORTIONS SEPARATED BY THE CENTRAL SHOULDER AND DISPOSED NORMALLY BETWEEN THE SAID FACES, (B) OUTSIDE AND INSIDE SHEETS OF MATERIAL ENGAGED WITH SAID OPPOSITE FACES RESPECTIVELY AND EXTENDING BETWEEN THE TWO STUDS, (C) THE OUTER SHEET HAVING A MARGINAL PORTION OF MATERIAL EXTENDING BEYOND THE DEPRESSED PORTION OF ONE STUD AND TERMINATING IN AN EDGE SUBSTANTIALLY COINCIDENTAL WITH THE RAISED PORTION AT SAID ONE STUD, AND THE INNER SHEET HAVING AN OPPOSITE MARGINAL PORTION OF MATERIAL EXTENDING BEYOND THE DEPRESSED PORTION AT THE OTHER STUD AND TERMINATING IN AN EDGE SUBSTANTIALLY COINCIDENTAL WITH THE RAISED PORTION AT SAID OTHER STUD, WITH CHANNELS FORMED AT THE OPPOSITE END STUDS OF ONE PANEL FOR THE RECEPTION OF RAISED PORTIONS OF THE NEXT ADJACENT PANELS AND WITH BOTH OUTER AND INNER SHEETS OF MATERIAL IN EDGE ABUTMENT WITH EACH OTHER.