Solderless coaxial connector plug

A method of attaching a connector plug to an end of a coaxial cable having an outer insulation layer surrounding an outer conductor insulated from an inner conductor, comprising the steps of:

• inserting a flush clean cut end of the coaxial cable through a central bore of a conductive handle having threads on a first end towards said flush clean cut cable end after insertion through said bore, said bore at said first end of said conductive handle having an entrance portion having a first diameter tapering down in a ramp portion to an internal portion having a second diameter less than said first diameter;
• inserting the flush clean cut end of the coaxial cable into a conductive sheath having a plurality of circumferentially spaced flexible fingers each flared outwardly in the direction of the flush clean cut end of the cable, each of said fingers having a sharp free end directed inwardly towards said cable;
• and
• screwing threads of a conductive plug body to said threads of said handle to draw said handle and said plug body together and form said connector plug, said plug body insulatingly surrounding a tip rod having a tip end and a point end, said point end being aligned to be drawn into electrical contact with the center conductor at the flush clean cut end of said coaxial cable to provide electrical continuity between said center conductor and said tip end, said plug body comprising means responsive to said handle and said plug body drawing together to push said sheath into said bore of said handle wherein said fingers are radially compressed by sliding engagement with said ramp portion of said bore to cause said sharp free ends of said fingers to pierce said outer insulation layer of said cable until said sharp free ends contact said outer conductor to provide electrical continuity between said outer conductor and said handle and said plug body through said sharp free ends of said fingers.

A connector plug adapted for solderless connection to an end of a coaxial cable having an outer insulation layer surrounding an outer conductor insulated from an inner conductor, said plug comprising:

• a conductive handle having a central bore adapted for passage of said end of said coaxial cable, said handle having threads at one end;
• a conductive sheath adapted for insertion of said end of said coaxial cable, said sheath comprising a cylinder having a plurality of fingers circumferentially spaced around said sheath and flared outwardly and pointing in the direction of the end of said coaxial cable, said cylinder of said sheath having a plurality of windows each aligned to pass a respective one of said fingers as said fingers are forced inwardly;
• a conductive plug body having threads mateable with said threads of said conductive handle to draw said handle and said plug body together to form said connector plug, said plug body comprising means for pushing said sheath into said bore in response to said plug body and said handle drawing together, said bore comprising means responsive to movement of said sheath into said bore for forcing said finger inwardly to pierce said outer insulation layer and make contact with said outer conductor to provide electrical continuity between said outer conductor and said handle and plug body through said finger, said plug body insulatingly surrounding a tip rod having a tip end and a point end, said point end being centrally aligned within said plug body to electrically contact said center conductor of said coaxial cable to provide electrical continuity between said center conductor and said tip end.

A method of attaching a connector plug to an end of a coaxial cable having an outer insulation layer surrounding an outer conductor insulated from an inner conductor, comprising the steps of:

• inserting the end of the coaxial cable through a central bore of a conductive handle having threads on the end towards said cable end after insertion through said bore, said bore having an entrance portion having a first diameter tapering down in a ramp portion to an internal portion having a second diameter less than said first diameter;
• inserting the end of the coaxial cable into a conductive sheath having a plurality of circumferentially spaced flexible fingers each flared outwardly in the direction of the end of the cable, each of said fingers having a sharp free end directed inwardly towards said cable;
• and
• screwing threads of a conductive plug body to said threads of said handle to draw said handle and said plug body together to form said connector plug, said bore of said handle and a bore of said plug body having regions of reduced crosssection to crimp both ends of said sheath around said coaxial cable to secure said sheath to said coaxial cable, said plug body insulatingly surrounding a tip rod having a tip end and a point end, said point end being aligned to be drawn into electrical contact with the center conductor of said coaxial cable as said handle and plug body are screwed together to provide electrical continuity between said center conductor and said tip end, said plug body comprising means responsive to said handle and said plug body drawing together to push said sheath into said bore of said handle wherein said fingers are radially compressed by sliding engagement with said ramp portion of said bore and said sharp free ends of said fingers pierce said outer insulation layer of said cable to provide electrical continuity between said outer conductor and said handle and said plug body.