Abstract: A clamping device having a U-shape provides a mechanical and electrical connection between two flat ribbons or strips of electrically conductive material. The strips of material may, for example, be thin copper bars for grounding purposes in an underground telephone vault. A mounting means allows the clamp to be secured to a structure wall. A pair of threaded bolts are offset from each other and are mounted in opposite legs of the U-shaped clamp. The bolts are formed with slotted heads for securing another conductor, such as a ground wire or ground ribbon, therein.

Abstract: A bracket provides a mechanical and electrical connection between a ground wire and a shielded cable. In one embodiment, a portion of the conductive sheath of the shielded cable is placed into an enlarged portion of a keyhole-shaped bore in a lug. The ground wire is placed into a reduced portion of the keyhole-shaped bore. A securing bolt threaded in an intersecting bore in the lug is then tightened to create a mechanical and electrical bond between the conductive sheath and the ground wire. In another embodiment, a pressure plate is placed into an oval shaped bore between the conductive sheath and the securing bolt. When the securing bolt is tightened, a mechanical and electrical connection between the conductive sheath and the bracket is accomplished through the pressure plate. In another embodiment, multiple first bores are fashioned through a lug to accept the ground wire in any of the bores without having to shape the ground wire into a hook-like connector. The securing bolt then engages the ground wire.

Abstract: An electrical slide switch contains an extendible actuator mechanism. The actuator mechanism is initially flush with the housing, in an inactive position, and can be extended outwardly from the housing and locked in an active switching position after the switch is inserted into a printed circuit board. The actuator is movable along a guide ramp from the inactive position to the active position in which the actuator button and control carrier are locked together for further movement.

Abstract: A clamping device having a U-shape provides a mechanical and electrical connection between two flat ribbons or strips of electrically conductive material. The strips of material may, for example, be thin copper bars for grounding purposes in an underground telephone vault. One inner surface of the U-shaped clamp includes at least one projecting point which is positioned directly opposed to at least one threaded bolt movably disposed and extending from the opposed inner surface. The free end of the bolt is formed with a complementary recess and an abrading surface surrounding the recess. In a preferred embodiment, a pair of such threaded bolts are offset from each other and are mounted in opposite legs of the U-shaped clamp. The bolts may be formed with a slotted head for securing another conductor or bonding ribbon therein.

Abstract: A clamping device having a U-shaped portion between which material is positioned to be mechanically and electrically coupled to the clamp when engaged. One inner surface of the U-shaped clamp includes a conically-shaped tip of a hardened material which is positioned directly opposed to a threaded bolt or stud extending outwardly from the opposed inner surface of the U-shaped clamp for engagement with the conically-shaped tip. The terminal end of the oppositely positioned threaded bolt is formed with a complementary recess and, preferably, a knurled or serrated outer edge for abrading material which is engaged upon the tightening of the bolt. In one embodiment of the clamp, the threaded bolt includes a terminal portion adapted to accommodate and have secured therein a terminated ground wire, and the U-shaped clamp has an undercut portion for positioning against an upturned flange edge of a panel.

Abstract: A ground clamp having a clamping strap formed of a corrosive-resisting material with a series of uniformly sized and spaced apertures to facilitate the installation of the clamping strap and clamp onto a wide range of pipe, rod or conduit diameters. A tightening stud, through which the clamping strap is secured about the object to be grounded, includes a terminal portion having a slot therein to receive and have secured thereto one or more terminated ground wires. A pair of curved plates are adjustably positionable along the stud to form a tight clamping action of the clamping strap about the object to be grounded without subjecting the strap to localized stresses or damage. An abrading sleeve is carried by the clamping strap, and positioned thereon to engage the outer surface of the pipe, rod or conduit to be grounded.

Abstract: A collapsible cable or wire spool stand which, when erected, provides a stable platform about which a spool of cable or wire material can be supported to permit the withdrawal of cable or wire contained on the spool. The support structure may be readily collapsed from its erected configuration to minimize storage space. In a collapsed configuration, the horizontally disposed axle, upon which the spool is supported functions as a convenient handle to form a convenient handle for carrying the spool support stand.

Abstract: A universal ground clamp having a clamping strap formed of a corrosive-resisting copper or copper alloy having a series of uniformly sized and spaced apertures to facilitate the installation of the clamp onto a wide range of pipe, rod or conduit diameters. A brass stud, through which the clamping strap is secured, includes a terminal portion adapted to accommodate and have secured therein a terminated ground wire. A pair of curved plates supported upon the stud are used to form a tight clamping action of the copper strap about the pipe, rod or conduit to be grounded, without subjecting the strap to localized stresses or tearing, but permitting the strap to tightly encircle the pipe, rod or conduit and to be folded upon itself in a convergingly parallel manner.

Abstract: An electronic locking device having a key unit and lock unit which units each have substantially identical integrated circuits contained therein for electronically controlling the operation of the locking device. The integrated circuit in the key element is adapted to transmit a stream of pulses into a plurality of trains of pulses upon insertion of the key unit into the lock unit. Each train of pulses is of a predetermined length. The integrated circuit in the lock unit is adapted to receive the train of pulses emitted from the key unit, to determine the length of the train of pulses, and compare the length of the train of pulses received to determine whether such train length coincides with the predetermined length. The integrated circuit in the lock unit will then emit a signal to allow the lock unit to open. If the length of the train of pulses does not coincide with the predetermined length, the lock unit integrated circuit will not emit a signal and the locking device will remain locked.

Abstract: The present invention relates generally to security systems, and more particularly, to low cost, highly reliable mechanical-electronic locking units. The electronic security devices of the invention physically include a key assembly, a receptacle for the key in a door or other secured device, a receiver for decoding the signal sent from the key, and a novel electromechanical locking-and-unlocking component which is actuated electrically in response to an appropriate signal from the receiver.