Junction box connector with tongue means to exclude plaster

Claim 1

A JUNCTION BOX CONNECTOR COMPRISING A UNBROKEN BASE ANNULUS AT THE REAR END OF THE CONNECTOR SO THAT SAID ANNULUS WILL BE LOCATED EXTERNALLY OF A JUNCTION BOX WHEN THE CONNECTOR IS COUPLED THERETO, SAID BASE ANNULUS HAVING A FRONT FACE, A SPLIT TUBE ALIGNED WITH SAID ANNULUS, A RESILIENT LEG INTEGRALLY RESILIENTLY JOINING SAID SPLIT TUBE TO SAID ANNULUS, SAID SPLIT TUBE EXTENDING FORWARDLY AWAY FROM SAID ANNULUS, MEANS EXTENDING INWARDLY ACROSS THE FRONT END OF THE SPLIT TUBE AND SUPPORTED THEREBY AND DISPOSED TO ACT AS AN ABUTMENT ELEMENT FOR LIMITING FORWARD INSERTION OF A PROTECTIVE TUBE INTO THE JUNCTION BOX CONNECTOR THROUGH THE BASE ANNULUS, SAID SPLIT TUBE INCLUDING AN OUTWARDLY PROTRUDING FORWARDLY FACING INSERTION-LIMITING SHOULDER, MEANS PROVIDING A TAPPED OPENING IN THE SPLIT TUBE, A SCREW MESHING WITH SAID OPENING AND HAVING ITS TIP EXPOSED ON THE INSIDE OF THE SPLIT TUBE, A TONGUE INTEGRAL WITH A SPLIT EDGE OF THE TUBE IN A POSITION EXTERNAL TO THE JUNCTION BOX WHEN THE CONNECTOR IS COUPLED THERETO, THE FORWARD EDGE OF THE TONGUE AND THE INSERTION LIMITING SHOULDER LYING IN ABOUT THE SAME PLANE PERPENDICULAR TO THE LONGITUDINAL AXIS OF THE SPLIT TUBE, THE REAR EDGE OF THE TONGUE BEING JUXTAPOSED TO THE FRONT FACE OF THE BASE ANNULUS, THE TIP OF THE TONGUE AT LEAST ABOUT OVERLYING THE OUTER SURFACE OF THE OPPOSED LONGITUDINAL SPLIT EDGE OF THE TUBE WHEREBY TO PERMIT THE TWO SPLIT EDGES OF THE TUBE TO BE FLEXED TOWARD ONE ANOTHER, AND MEANS PROVIDING A NOTCH IN SAID OPPOSED LONGITUDINAL SPLIT EDGE OF SAID TUBE THROUGH WHICH NOTCH THE TONGUE EXTENDS, THE FRONT EDGE OF THE NOTCH BEING REGISTERED WITH THE FRONT EDGE OF THE TONGUE AND THE REAR EDGE OF THE NOTCH CONSTITUTING A PORTION OF THE FRONT FACE OF THE BASE ANNULUS, THE INNER SURFACE OF THE TONGUE BEING JUXTAPOSED TO THE LONGITUDINAL EDGE OF THE NOTCH.