Assembly method

Claim 1

AN ASSEMBLY METHOD USING A THERMOPLASTIC BASE MEMBER HAVING A UPWARDLY EXTENDING COLLAR THEREON AND AT LEAST ONE CONDUCTIVE CONTACT SCREW HAVING A HEAD WITH A FLAT LOWER SURFACE LARGE ENOUGH TO EXTEND OVER A PORTION OF AND RETAIN A CONDUCTIVE PLATE, WITH THE ASSEMBLY BEING SUBJECT TO CRITICAL SPACING CONSIDERATIONS, COMPRISING THE STEPS OF: POSITIONING THE CONDUCTIVE PLATE TO AT LEAST PARTIALLY ENCOMPASS THE UPWARDLY EXTENDING COLLAR OF THE THERMOPLASTIC BASE MEMBER; RESILIENTLY SUPPORTING THE REGION OF THE BASE MEMBER INCLUDING COLLAR; DRIVING THE CONDUCTIVE CONTACT SCREW THROUGH THE COLLAR SO THAT THE FLAT LOWER SURFACE LIES OVER A PORTION OF THE CONDUCTIVE PLATE, SAID DRIVING STEP BEING SUFFICIENT TO COMPRESS THE RESILIENT SUPPORT OF SAID SUPPORTING STEP; HEATING THE COLLAR SUFFICIENTLY TO SOFTEN AT LEAST A PORTION THEREOF; AND RAISING THE BASE MEMBER A LIMITED AMOUNT WHILE HOLDING THE SCREW DOWN TO COMPRESS A PORTION OF THE COLLAR BETWEEN THE SCREW AND THE PLATE TO THEREBY EXPAND THE SOFTENED COLLAR THEREBETWEEN TO FORM AN INTEGRAL WASHER OVER THE PORTION OF THE PLATE LYING UNDER THE FLAT SURFACE OF THE SCREW HEAD.