Abstract: An assembly includes a first structure and a clamp. The first structure may have an opening located on a first surface and the opening includes a keyway. The clamp is configured to clamp a second structure to the first structure. The clamp may include a head configured to be inserted above the opening in the first structure. The clamp may also include a body coupled to the head. An upper portion of the body may include formations located on opposite sides of the body and a lower portion of the body is threaded. The clamp may further include a nut coupled to the body. The nut may be configured to be rotated such that when the formations on the body are aligned with the keyway in the first structure, the head of the clamp is configured to lower onto the second structure and secure the second structure to the first structure.

Abstract: An assembly includes a first structure and a clamp configured to clamp the first structure to a second structure. The clamp may include a top portion configured to extend through the slot, where the top portion includes a head, a neck portion coupled to the head and a cylindrical body coupled to the neck portion. The clamp may also include a rotatable nut located adjacent the slot, where the rotatable nut has an opening to receive the cylindrical body. The clamp may further include a spring nut configured to receive a portion of the cylindrical body. The rotatable nut is configured to be turned such that when the head of the clamp is aligned with the slot in the first structure, the top portion of the clamp is configured to lower into the opening and clamp the first structure to a second structure.

Abstract: A device for gripping a cable is presented that has a retention member rotatably disposed within a cable guide such that upon entrance of the cable within an entrance port, the cable moves between the retention member and a wall, causing the retention member to simultaneously rotate and move toward the exit port and away from the wall until it abuts the exit wall and rotates in place as the cable is pushed out the exit port. When the cable is pulled toward the entrance port, the retention member simultaneously rotates and moves toward the entrance port and the wall, wedging the cable between the wall and the retention member.

Abstract: A clamp includes a first member, a washer, a nut, a threaded bolt, a spring and a torsion spring. The first member may include side portions and have a first opening. The washer may include a second opening and at least one portion protruding in a downward direction from an upper surface of the washer. The nut may have an upper surface, a lower surface and a threaded opening. The threaded bolt may be disposed through the first opening, the second opening and the threaded opening. The spring may be located between a portion of the first member and the washer. The torsion spring may be located between the washer and the nut, where the torsion spring causes the nut to rotate when force is applied to an upper part of the first member.

Abstract: An assembly includes a first structure and a clamp. The first structure may have an opening located on a first surface and the opening includes a keyway. The clamp is configured to clamp a second structure to the first structure. The clamp may include a head configured to be inserted above the opening in the first structure. The clamp may also include a body coupled to the head. An upper portion of the body may include formations located on opposite sides of the body and a lower portion of the body is threaded. The clamp may further include a nut coupled to the body. The nut may be configured to be rotated such that when the formations on the body are aligned with the keyway in the first structure, the head of the clamp is configured to lower onto the second structure and secure the second structure to the first structure.

Abstract: One aspect of the present invention includes a cover assembly for a floor box supporting at least one receptacle mounted therein. The assembly comprises at least one cover plate, at least one lid and a lock. The cover plate for at least partially covering the floor box includes at least one lock receiving channel. The at least one lid is pivotally secured to the cover plate for movement between a closed position covering the receptacle and an open position permitting access to the receptacle. The lock retains the lid in the closed position. Also, the lock is disposed at least partially within the channel and moveable between a locking position for retaining the lid in the closed position and at least one release position wherein the lid is not retained by the lock.

Abstract: An extension tube for an electrical floor box that includes a first section and a second section. Each section has a curved wall with an interior surface and an exterior surface, a top portion, a bottom portion and first and second side edges. The bottom portion is offset radially outwardly from the top portion by a ledge and the side edges have connecting mechanisms which join the two sections together to form the extension tube. The extension tube includes a top portion and a belled bottom portion which are formed so that the top portion of one extension tube can be inserted into the bottom portion of another extension tube.

Abstract: A clamp includes a first member, a washer, a nut, a threaded bolt, a spring and a torsion spring. The first member may include side portions and have a first opening. The washer may include a second opening and at least one portion protruding in a downward direction from an upper surface of the washer. The nut may have an upper surface, a lower surface and a threaded opening. The threaded bolt may be disposed through the first opening, the second opening and the threaded opening. The spring may be located between a portion of the first member and the washer. The torsion spring may be located between the washer and the nut, where the torsion spring causes the nut to rotate when force is applied to an upper part of the first member.

Abstract: An assembly includes a first structure and a clamp configured to clamp the first structure to a second structure. The clamp may include a top portion configured to extend through the slot, where the top portion includes a head, a neck portion coupled to the head and a cylindrical body coupled to the neck portion. The clamp may also include a rotatable nut located adjacent the slot, where the rotatable nut has an opening to receive the cylindrical body. The clamp may further include a spring nut configured to receive a portion of the cylindrical body. The rotatable nut is configured to be turned such that when the head of the clamp is aligned with the slot in the first structure, the top portion of the clamp is configured to lower into the opening and clamp the first structure to a second structure.

Abstract: A coupling bracket having a back wall, first and second side walls extending from the back wall to a pair of edges, an open side opposite the back wall, a pair of opposing open ends and a passage extending between the opposing open ends. Each side wall has an open slot extending from the edge to a closed end or base. The bases of the open slots are correspondingly located and aligned and adapted to receive a rod extending through and substantially perpendicular to the side walls. The passage is adapted to receive an elongate rail.

Abstract: A device for gripping a cable is presented that has a retention member rotatably disposed within a cable guide such that upon entrance of the cable within an entrance port, the cable moves between the retention member and a wall, causing the retention member to simultaneously rotate and move toward the exit port and away from the wall until it abuts the exit wall and rotates in place as the cable is pushed out the exit port. When the cable is pulled toward the entrance port, the retention member simultaneously rotates and moves toward the entrance port and the wall, wedging the cable between the wall and the retention member.

Abstract: One aspect of the present invention provides a poke-through assembly for installation in a hole in a floor structure. The floor structure defines a floor in a first working environment and a ceiling in a second working environment. The poke-through assembly includes at least one intumescent member, a base plate and an intumescent enclosure. The intumescent member is disposed at least partially between the floor of the first working environment and the ceiling of the second working environment. The base plate supports and is disposed below the intumescent member for limiting the expansion of the intumescent member toward or into the second working environment. The intumescent cover supports the intumescent member and circumferentially surrounds at least a portion of the intumescent member, wherein expansion of the intumescent member is impeded by the cover.

Abstract: One aspect of the present invention provides a poke-through assembly for installation in a hole in a floor structure. The floor structure defines a floor in a first working environment and a ceiling in a second working environment. The poke-through assembly includes at least one intumescent member, a base plate and an intumescent enclosure. The intumescent member is disposed at least partially between the floor of the first working environment and the ceiling of the second working environment. The base plate supports and is disposed below the intumescent member for limiting the expansion of the intumescent member toward or into the second working environment. The intumescent cover supports the intumescent member and circumferentially surrounds at least a portion of the intumescent member, wherein expansion of the intumescent member is impeded by the cover.

Abstract: One aspect of the invention is an outlet box frame for installation in a hole in a floor structure. The hole having a perimeter and defining an internal wall surface in said floor structure. The frame including a walled member, at least one flange portion and a unitary retaining screw guide. The walled member being sized for insertion within the hole. The at least one flange portion extending outward from the walled member, wherein once installed at least a portion of the flange extends from the walled member past the internal wall surface. The unitary retaining screw guide supports a retaining screw. The screw guide being supported from the walled member and configured to receive the retaining screw therein. Upon installation, the retaining screw inserted in the retaining screw guide engages the hole wall without significant penetration thereof, providing at least pullout resistance of the frame from the hole. Alternatively, the outlet box frame may include the retaining screw.

Abstract: One aspect of the present invention provides a poke-through assembly for installation in a hole in a floor structure. The floor structure defines a floor in a first working environment and a ceiling in a second working environment. The poke-through assembly includes at least one intumescent member, a base plate and an intumescent enclosure. The intumescent member is disposed at least partially between the floor of the first working environment and the ceiling of the second working environment. The base plate supports and is disposed below the intumescent member for limiting the expansion of the intumescent member toward or into the second working environment. Another aspect of the present invention provides a poke-through assembly including an upper frame, at least one intumescent member and an intumescent cover. The intumescent member is disposed below the upper frame.

Abstract: The present invention provides an outlet box assembly including an outlet box having a bottom wall bounded by an outwardly extending perimeter wall forming a housing for receiving a first receptacle. An attachment structure is disposed in the housing for securing the first receptacle to the outlet box. The perimeter wall includes a first portion extending from the bottom wall and a second portion extending at an oblique angle from the first portion. The second wall portion includes an opening for supporting a second receptacle. The assembly includes a cover movable between open and closed positions and between retracted and un-retracted positions.

Abstract: A coupling bracket having a back wall, first and second side walls extending from the back wall to a pair of edges, an open side opposite the back wall, a pair of opposing open ends and a passage extending between the opposing open ends. Each side wall has an open slot extending from the edge to a closed end or base. The bases of the open slots are correspondingly located and aligned and adapted to receive a rod extending through and substantially perpendicular to the side walls. The passage is adapted to receive an elongate rail.

Abstract: A cover for an electrical box having a face plate, an elongate slot in the face plate, a lid support structure and a lid. The lid fits on the front of the face plate and over the opening and is pivotably movable between an open position, which allows access to the box interior, and a closed position, which prevents access to the box interior. When in the open position, the lid is slidably receivable by the slot and is stored in the lid support structure that extends from the back of the cover.

Abstract: Disclosed herein is an electrical floor box cover assembly with a convertible top plate. The inventive convertible top plate can be installed in two orientations, resulting in either a flush or recessed finished assembly. The cover assembly is affixed to a floor mounted electrical box, and includes a floor box cover having a center opening, with the inventive convertible cover plate affixed thereto. In a first orientation of the cover plate, a cover plate protrusion is inserted into the center opening of the floor box cover, providing a flush surface in the cover assembly. In a second orientation, a flat surface of the cover plate is facing up, so that the center opening of the floor box cover forms a recess in the cover assembly. Also provided is a port in the floor box cover, through which cables or wires can be threaded from the electrical fixture to the exterior of the floor box cover assembly while the cover is in an attached position.