Abstract: An electric receptacle for trade size outlet boxes having a ground fault circuit interrupting machanism incorporated therein. A receptacle housing includes contact jaws seated therein to receive the plug of a conductor leading to a load, electronic components to detect a ground fault and grounded neutral condition on the load side of the receptacle, plus a coil and trip mechanism to open the receptacle circuit on occurrence of a ground fault or grounded neutral condition. The complete receptacle assembly is approximately the same depth as conventional household receptacles which do not have ground fault circuit interrupting means included therein. Means to periodically test the ground fault interrupting mechanism is also included in the receptacle assembly, as well as means to indicate the circuit has been interrupted and means to reset.

Abstract: This disclosure depicts a novel improved electrically conductive double action pressure lock terminal assembly for use with an electrical wiring device capable of holding various diameter sized conductors. The pressure lock terminal assembly comprises: an electrically non-conductive base having a cavity stop means; an electrically conductive contact strip supported by the base, the contact strip having a main section with at least one jaw section extending from the end of the main section; and an electrically conductive double action pressure lock attached to and extending at a right angle from the main section such that the double action pressure lock is positioned a predetermined distance beneath the jaw section of the contact strip.

Abstract: This disclosure depicts a novel improved thin wall correlative case for use with an electrical multiple outlet. The correlative case comprises: a bottom section and a top section, each of the top and bottom sections having; a floor, first and second side walls, and first and second end walls, and first and second substantially rectangular apertures in the floor of the bottom section, the apertures being positioned parallel to each other and parallel to the end walls, and a substantially circular aperture in the floor of the bottom section, the circular aperture being located near the first side wall.When the top and bottom sections of the case are assembled, each of the end walls forms a surface having two rectangular apertures parallel to each other and a D-shaped aperture.

Abstract: A cable lock assembly includes first and second members pivotally interconnected and defining a cable receiving slot. The members have interlocking means defining a closed position to securely grip the cable between the members. In one version, the second member has a locking cleat pivoted thereon and the locking cleat has sharp edges that bite into the cable. In another version, the interlocking means includes a pair of projections on one member and two spaced pairs of recesses on the other member that define two locked positions for the members.

Abstract: A cable lock assembly for an electrical outlet box includes first and second members that cooperate with each other to define a cable receiving opening. The first member is generally U-shaped and has a locking member extending from the base thereof, which is received into an aperture in the bottom wall of the box. The second member straddles the first member and includes a base and first and second pairs of spaced legs extending from opposite ends. Each leg of the second member is received into an opening in the bottom wall and has spaced ledges that engage the bottom surface of the bottom wall to define different sized openings between the bases.

Abstract: A retaining clip for retaining a threaded screw on a wall of an outlet box has a pair of legs extending generally parallel from a bite portion and which are received in slots in the wall extending across an elongated screw receiving passage. Each leg has an opening having a diameter substantially equal to the major diameter of the thread and each opening has a projection having an inner arcuate edge having a radius of about one-half the minor or root diameter. At least one of the openings has its center axially offset from the axis of the passage so that a line through the two centers is inclined with respect to the axis of the passage.

Abstract: A push-in type pressure lock terminal for electrical receptacles wherein the bared end of various diameter sized conductors may be inserted into a recess in the receptacle for connection with the internal conductive element thereof, and which is then held therein by a restraint element against withdrawal until the restraint is released. The restraint element comprises a double-action cantilever spring integrally formed from the internal conductive bus element of the receptacle. The double-action spring deflects over a relatively wide range within a limited space within the receptacle to thereby accommodate a range of various diameter sized conductors without causing an objectionable permanent set to occur in the spring. The cantilever spring produces a double-action deflection in the direction of insertion when a wire conductor is inserted and bears against such free end.

Abstract: This disclosure depicts a ductile metallic electrical and mechanical connector for attachment to one or more electrical cables and formable by a compressible process. The connector comprises at least one bifurcated body member having first and second leg portions initially connected by a reduced cross-sectional thickness portion of the body member to provide a plastically flowable hinge connection. The first and second leg portions define an initial predetermined angle such that the body member can laterally engage an uninsulated section of an electrical cable. The first leg has on the end opposite the reduced thickness portion an axially extending rib member and axially extending inner and outer ridges disposed on either side of the rib member. The second leg has on the end opposite the reduced thickness portion axially extending inner and outer fingers.

Abstract: An electrical outlet box and wall mounting clamps therefor for connection to a wall panel. The clamps comprise a pair of L-shaped members each having a first leg which forms a clamping wall and second leg extending from the first leg at slightly more than a 90.degree. angle. The clamps are mounted by inserting the first leg through an elongated transverse slot in the top and bottom walls of the outlet box. The clamps pivot between a retracted position for insertion of the outlet box through a corresponding aperture in a wall panel and a clamping position for connecting the outlet box to the wall panel. Each clamp is held in the retracted position by an over-center spring lock. Snap buttons on the second leg of each clamp fit into respective apertures in the outlet box when the clamps are in the clamping position.

Abstract: A three part bus support for supporting a cylindrical tubular bus on an insulator comprises a base and two identical end portions. Each end portion has a hook portion defining an opening and a base portion which is connectible to either of the opposite ends of the base at one of two wall portions formed along opposed ends of the base. When the end portions are connected to the base, the openings defined by the hooks are aligned for receiving a tubular bus. A projection of one end of the base portion of each end portion is tangent to an inner surface of the hook portion where the bus exerts a force caused by wind, and the base is asymmetrical about a longitudinal axis passing through the opposite ends of the base to provide improved locations of fulcrums of lever arms of the wind forces.

Abstract: A safety guard for a press brake includes a sheet of rigid transparent material suspended by a pair of first cables from a frame of the press. A lower edge of the sheet is displaced a predetermined distance above a bed of the press providing just enough room so that a forward portion of a workpiece can be slid beneath the lower edge of the sheet and positioned on the bed of the press without providing additional space through which an operator's hands can be inadvertently extended. An operator holds a rearward portion of the workpiece with both hands as a ram of the press comes down during a work cycle to engage and fabricate or form the forward portion of the workpiece positioned on the bed. Just before the fabrication begins, a second pair of cables connected to the sheet and passing through a series of pulleys alternately on the frame and ram of the press operates, as a consequence to movement of the ram, to rapidly move the sheet out of the way of the workpiece.

Abstract: A portable electrical device has a molded body having a cavity closed by a rear wall. Two conductive prongs project through the rear wall for reception into a phase port and a neutral port, respectively, of an electrical outlet. A retractable grounding pin or prong, when in an extended position, extends outwardly from the rear wall in parallel spaced relationship with the two prongs and is receivable by a ground port of the outlet if there is one. When the device is used with an electrical outlet not having a ground port, the grounding pin retracts within the cavity against a spring bias. An indicating pin is operatively connected to the grounding pin and moves, in response to retracting movement of the grounding pin, to an exposed position within a recess in a front wall of the body to provide a visual indication that the device is not grounded by the grounding pin.

Abstract: The tool comprises a plurality of tubular telescoping sections of insulating material arranged in a series. Each of the sections, except a most rearward end section, has a forwardly facing annular exterior shoulder at its rearward end and each of the sections, except a most forward end section, has a rearwardly facing annular interior shoulder at its forward end. When the tool is fully extended for use, each rearwardly facing shoulder engages a forwardly facing shoulder and radial apertures in the sections are in alignment. A pin support located within the rearward end of each section except the most rearward section contains a pin which is biased outwardly by a compression spring through the aligned apertures thus locking the sections in their extended positions with respect to each other. The pins, aligned openings, and shoulders are relatively positioned so that pulling forces are opposed by the shoulders and not the pins.

Abstract: A terminal connector or lug for use as a termination for electrical cables is formed by an impacting process. The connector comprises an apertured mounting pad portion and an integral cylindrical tubular body portion having an open end and a closed end and adapted to be crimped onto an electrical cable. The pad is of a generally rectangular parallelepiped shape and extends longitudinally outwardly from the closed end of the tubular portion adjacent an outer peripheral region thereof. Opposite side portions of the inner end portion of the pad extend inwardly of the closed end of the tubular portion, and the wall closing the closed end of the tubular portion is of uniform thickness and is perpendicular to an upper surface of the pad.