Apparatus for releasably connecting well tools to a supporting member

Claim 1

IN A SUBSURFACE TOOL ADAPTED TO BE SUSPENDED FROM A CABLE EXTENDING TO THE SURFACE, APPARATUS OPERABLE FROM THE SURFACE FOR RELEASING SAID TOOL FROM A CABLE, SAID APPARATUS COMPRISING: FIRST AND SECOND CO-ENGAGING COMPANION MEMBERS RESPECTIVELY CONNECTED TO SAID TOOL AND ADAPTED FOR CONNECTED TO A CABLE; MEANS FOR RELEASABLY CONNECTING SAID COMPANION MEMBERS INCLUDING FIRST AND SECOND STOP MEANS ON ONE OF SAID COMPANION MEMBERS ARRANGED AND ADAPTED TO ENGAGE AND CONSTRAIN THE OTHER OF SAID COMPANION MEMBERS, SAID FIRST STOP MEANS BEING MOVABLE INDEPENDENTLY OF SAID SECOND STOP MEANS FROM A NORMAL POSITION IN ENGAGEMENT WITH SAID OTHER COMPANION MEMBER FOR CONNECTING SAID COMPANION MEMBERS TO ANOTHER POSITION FOR DISCONNECTING SAID COMPANION MEMBERS; MEANS FOR RETAINING SAID FIRST STOP MEANS IN SAID NORMAL POSITION; AND MEANS RESPONSIVE TO AN ELECTRICAL SIGNAL FOR DISABLING SAID RETAINING MEANS AND FREEING SAID FIRST STOP MEANS FOR MOVEMENT TO SAID OTHER POSITION TO DISCONNECT SAID COMPANION MEMBERS.