Panel joining means

Claim 1

A STRUCTURE COMPRISING AT LEAST A PAIR OF SANDWICH PANELS, EACH OF SAID SANDWICH PANELS HAVING A DEFORMABLE CORE MATERIAL AND AT LEAST ONE RIGID FACE SHEET ADHERED TO ONE MAJOR SURFACE THEREOF, SAID PANELS BEING IN ABUTTING EDGE TO EDGE RELATIONSHIP, A DISCOIDAL CAMMING MEMBER COMPRISING A FLAT DISCLIKE MEMBER HAVING FORMED THEREIN AT LEAST A PAIR OF APERTURES DEFINING AN INWARDLY OPERATING CAMMING SURFACE, SAID DISC ALSO DEFINING A CENTRALLY DISPOSED TOOL ENGAGING MEANS, SAID DISC BEING POSITIONED ADJACENT THE INNER SURFACE OF THE FACING SHEETS OF THE ABUTTING PANEL AND HAVING OPPOSED CAMMING SURFACES ADJACENT SHEETS OF THE DIFFERENT PANELS, THE FACING SHEET OF EACH OF THE PANELS DEFINING AN APERTURE ADJACENT THE CAMMING SLOTS, SAID APERTURES IN EACH OF SAID SHEETS CONTAINING A PIN ADAPTED TO ENGAGE THE CAMMING SURFACES, SAID PIN HAVING A HEAD PORTION AND A BODY PORTION, THE BODY PORTION OF SAID PIN DEFINING THE GROOVE TO RECEIVE THE CAMMING MEMBER AND PRESENT MOTION OF THE PIN WHEN ENGAGED WITH SAID CAMMING MEMBER IN A DIRECTION GENERALLY NORMAL TO THE PLANE OF THE CAMMINING MEMBER, THE HEADS OF SAID PINS BEING GENERALLY FLUSH WITH THE SURFACE OF SAID PANEL AND BEING HELD TOGETHER BY THE INWARDLY FACING CAMMING SURFACES OF THE DISCOIDAL MEMBER.