Novel safety plug and receptacle for low-tension installations

Claim 1

IN A SAFETY CONNECTOR FOR LOW TENSION INSTALLATIONS OF THE TYPE INCLUDING A PLUG AND A RECEPTACLE HAVING A CENTRAL RECESS AND RADIAL GROOVES TO RECEIVE SAID PLUG, AND WHEREIN SAID PLUG HAS RADIALLY OUTWARDLY DIRECTED CONTACT BLADES TO BE INSERTED IN THE AXIAL DIRECTION INTO SAID RECESS AND RADIAL GROOVES IN THE RECEPTACLE AND CAPABLE OF BEING ROTATED TO ACCOMMODATE SAID BLADES INTO ENGAGEMENT WITH A PAIR OF CONTACTS CONCEALED WITHIN SAID RECEPTACLE, THE IMPROVEMENTS COMPRISING, IN COMBINATION, A HOLLOW COVER ENCLOSING THE METAL PARTS OF SAID PLUG EXCEPT THE ENDS OF SAID CONTACT BLADES, SAID PLUG HAVING AN AXIAL BORE ANUD SAID COVER BEING PROVIDED WITH A STEM INSERTED IN SAID AXIAL BORE, SAID STEM HAVING A PAIR OF LONGITUDINALLY EXTENDING SPACED GROOVES FOR RECEIVING TWO LEAD-IN WIRES TO SEPARE THEM AND AVOID SHORT CIRCUITING, AND SAID RECEPTACLE BEING FORMED OF TWO PARTS WHICH ARE DETACHABLY FASTENED TO EACH OTHER BY A PARI OF LEAF SPRINGS EACH FASTENED AT ONE END TO ONE OF THE PARTS AND HAVING ITS OTHER END ENGAGING IN CORRESPONDING RECESSES PROVIDED IN THE OTHE RPART AND READILY SEPARABLE THEREFROM UNDER A GIVEN TENSION APPLIED TO ONE OF SAID MEMBERS WHEN AN EXCESSIVE PULL IS APPLIED TO THE PLUG OR RECEPTACLE, WHEREBY SAID MEMBERS ARE AUTOMATICALLY RELEASED AND SEPARATED AVOIDING DAMAGE TO AN APPLIANCE TO WHICH THE CONNECTOR MAY BE CONNECTED.