Masco Building Products Corp.

Myron G Bloom

Alan C Lockwood

The present invention discloses a junction box cover without any metallic parts. The junction box cover includes a one-piece, non-metallic face plate with a generally flat upper surface and at least one cutout adapted to reveal an electrical receptacle. A non-metallic receptacle cap is shaped to fill and cover the cutout with a pivot at one end thereof for mounting the cap flush with the upper surface of the face plate when in a closed position, and for exposing the receptacle when the cap is in a open position. A non-metallic retaining bar is utilized to secure the pivot of the cap to the face plate and to provide a retaining pressure for maintaining the cap in an open position.

Junction box cover without metallic parts

The present invention discloses a poke-through connector assembly which may be assembled in an aperture within a concrete floor from only one side thereof. The connector includes a molded basket of electrical and thermal insulating material having an upper surface joined to a lower surface by integral columns. A flange extending from the upper surface prevents the connector from passing through the floor aperture, while a spring clip attached to the lower surface of the basket prevents the withdrawal of the connector. An electrical conduit is attached to the lower surface of the basket by the spring clip. Intumescent material placed within the basket expands to fill the aperture within the floor when a fire on the lower surface of the floor heats the connector. The conduction of heat from the fire through the connection is reduced because the insulating basket provides no metal conductive path from the electrical conduit and the spring clip to the upper surface of the basket. Once the basket of the connector fails, the spring clip prevents the connector from falling through the floor aperture, thus maintaining the fire rating of the connector within the floor.

Poke-through connector assembly

A cable clamp for use in an electrical box or the like for locating, holding and grounding cables fed into the box and through the clamp. The cable clamp is mounted within the electrical box adjacent the knock-out openings using a single fastener to retain one or two sheathed cables. The cables are clamped between walls of the clamp which includes an end abutment wall having a pair of apertures through which the conductor wires are fed. The abutment wall positionally locates the sheath of the cable. The clamping walls are brought together to retain the cable as the single fastener is tightened. The clamping walls include inner ribs which receive maximum clamping force via a stiffener flange and a small bearing surface to securely engage and position the cable. The cable clamp is integrally formed from a single piece of material, preferably steel.

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Santa Ana, CA, United States of America

Myron G Bloom