Weatherproof lift cover plate for electrical wiring devices

Claim 1

A WEATHERPROOF LIFT COVER PLATE FOR AN ELECTRICAL WIRING DEVICE BOX COMPRISING: A METALLIC PLATE; MEANS FOR ATTACHING SAID PLATE TO A BOX HOUSING AN ELECTRICAL WIRING DEVICE; A METALLIC LIFT COVER; MEANS FOR HINGING SAID LIFT COVER TO SAID PLATE COMPRISING HINGE EAR MEANS ON BOTH SAID PLATE AND SAID COVER HAVING ALIGNED OPENINGS FORMED THEREIN, THE HINGE EAR MEANS ON ONE OF SAID PLATE OR SAID LIFT COVER COMPRISING A PAIR OF ALIGNED OPENINGS, ONE OF WHICH PAIR OF OPENINGS IS SMALLER AND FORMED BY A WALL WITH SERRATIONS DEFINING ALTERNATING AXIAL RIDGES AND GROOVES, AND A HINGE PIN FORMED OF A RIGID PLASTIC MATERIAL THAT IS CHEMICALLY INERT RELATIVE TO AND WHEN ASSOCIATED WITH SAID METALLIC ELEMENTS IN A CORROSIVE ATMOSPHERE, SAID HINGE PIN HAVING A SHANK THAT IS CYLINDRICAL, PLAIN AND SMOOTH PRIOR TO ASSEMBLY AND DISPOSED TO EXTEND THROUGH ALL OF SAID ALIGNED OPENINGS ON FINAL ASSEMBLY, THE FREE END OF SAID SHANK BEING OF A LARGER DIAMETER THAN SAID SMALLER OPENING PRIOR TO INSERTION, AND AFTER INSERTION BEING IN TIGHT FRICTIONAL ENGAGEMENT WITH THE SERRATED WALL OF SAID SMALLER OPENING AND HAVING AXIAL SPLINES, FORMED DURING INSERTION BY THE SERRATED WALL, INTERENGAGING THE SERRATIONS OF SAID SERRATED WALL, WHEREBY SAID HINGE PIN IS SECURELY MOUNTED.