Electric plug and socket connectors

Claim 1

AN ELECTRICAL SOCKET ASSEMBLY FOR CO-OPERATION WITH A PLUG ASSEMBLY, COMPRISING A BODY OF INSULATING MATERIAL, AT LEAST ONE BORE EXTENDING THROUGH THE BODY AND A CONDUCTING SOCKET MEMBER WHICH EXTENDS WITHIN THE BORE AND COMPRISES TUBULAR END PARTS ONE OF WHICH LIES ADJACENT TO ONE OF THE OPEN ENDS OF THE BORE AND IS FORMED FOR ENGAGEMENT BY A CONTACT PIN OF A CO-OPERATING PLUG MEMBER WHILE THE OTHER IS FORMED TO RECEIVE THE END PORTION OF AN INSULATED ELECTRIC CABLE AND AN INTERMEDIATE PART, WHICH LIES BETWEEN THE TWO TUBULAR END PARTS AND HAS A RELATIVELY SMALL DIAMETER BORE TO RECEIVE AN END PORTION OF THE CONDUCTING CABLE, THE TUBULAR END PART WHICH IS FORMED TO RECEIVE THE INSULATED CABLE INCLUDING ALSO AN EXTERNAL FLANGE OR PROJECTION WHICH LIES WITHIN A CORRESPONDING RECESS IN THE BODY OF INSULATING MATERIAL SO AS TO SERVE NORMALLY TO MAINTAIN THE SOCKET MEMBER WITHIN THE BORE AND BEING SLOTTED LONGITUDINALLY TO PROVIDE FOR RESILIENT RADIAL INWARD DISPLACEMENT OF THE PARTS BETWEEN THE SLOTS AND HAVING AN EXTERNALLY TAPERED END PORTION FOR ENGAGEMENT WITH THE BORE OF AN EXTRACTION TOOL WHICH CAN BE INSERTED THROUGH THE ADJACENT END OF THE BORE OF THE INSULATING BODY TO CAUSE SUCH INWARD RADIAL DISPLACEMENT AND THUS REDUCE THE EFFECTIVE EXTERNAL DIAMETER OF THE FLANGE OR PROJECTION TO PERMIT WITHDRAWAL OF THE SOCKET MEMBER BODILY FROM THE BORE IN THE INSULATING BODY.