초록 ▼

An electrical receptacle of the three contact type, one of which receives the standard, normally non-current-carrying, system ground pin of a corresponding cap. A set screw is advanced into a threaded bore in the plastic body material of the receptacle to make contact with the aforementioned ground

An electrical receptacle of the three contact type, one of which receives the standard, normally non-current-carrying, system ground pin of a corresponding cap. A set screw is advanced into a threaded bore in the plastic body material of the receptacle to make contact with the aforementioned ground pin. The bore may be from the receptacle front or from behind the face plate, in either case preventing the casual or surreptitious removal of the cap and cord and the associated equipment.

대표청구항 ▼

In a system including a three-conductor electrical receptacle which includes a solid insulating body for supporting socket members corresponding to said three conductors for mating to a three-pin cord-end cap having pins in a corresponding format, a first of said pins and its corresponding socket me

In a system including a three-conductor electrical receptacle which includes a solid insulating body for supporting socket members corresponding to said three conductors for mating to a three-pin cord-end cap having pins in a corresponding format, a first of said pins and its corresponding socket member constituting a normally non-conducting safety ground connection, said system including a cover plate over said receptacle body, said cover plate having an aperture therethrough permitting access from mating said cord-end cap to said receptacle, the combination comprising: a threaded bore through said receptacle body at an angle from a point of contact with said first pin within said corresponding socket member to an external point adjacent to the inside surface of said cover plate; a set screw within said threaded bore said screw being controllable at said external point to bear against said first cord cap pin to secure said cord cap against removal; and an opening in said cover plate aligned with said threaded bore at said external point for insertion of a tool to control said set screw.