Abstract: A gas diverter is disclosed that slows, cools, and directs the hot gas and plasma generated during the operation of an electrical switching device. The gas diverter mounts to the switching device and has an inlet for accepting the gas and exit for expelling the gas. The diverter has peripheral walls and internal partitions that divide the gas and provide for two independent circuitous flow paths. In multi-phase switching devices, a plurality of gas diverters may be used to further separate the gases generated in each respective phase. The gas diverter is made of a high temperature, arc resistant plastic which is molded to form a two piece structure. The gas diverter is mounted to the device via a slide in place flange-channel mechanism.

Abstract: A gas diverter is disclosed that slows, cools, and directs the hot gas and plasma generated during the operation of an electrical switching device. The gas diverter mounts to the switching device and has an inlet for accepting the gas and exit for expelling the gas. The diverter has peripheral walls and internal partitions that divide the gas and provide for two independent circuitous flow paths. In multi-phase switching devices, a plurality of gas diverters may be used to further separate the gases generated in each respective phase. The gas diverter is made of a high temperature, arc resistant plastic which is molded to form a two piece structure. The gas diverter is mounted to the device via a slide in place flange-channel mechanism.

Abstract: The present technique provides a technique for electrically wiring devices using insulation displacement. The technique arranges a plurality of insulation displacement members in wedge-shaped configurations for piercing an insulation layer and electrically contacting a conductor of an insulated electrical wire assembly. The insulation displacement members may be disposed at any suitable angles and offsets to provide an effective multipoint electrical contact with the conductor. The insulated electrical wire assembly also may be carried by a wire support structure to facilitate insertion and removal of the insulated electrical wire assembly with the arrangement of insulation displacement members.

Abstract: The present technique provides a technique for electrically wiring devices using insulation displacement. The technique arranges a plurality of insulation displacement members in wedge-shaped configurations for piercing an insulation layer and electrically contacting a conductor of an insulated electrical wire assembly. The insulation displacement members may be disposed at any suitable angles and offsets to provide an effective multipoint electrical contact with the conductor. The insulated electrical wire assembly also may be carried by a wire support structure to facilitate insertion and removal of the insulated electrical wire assembly with the arrangement of insulation displacement members.

Abstract: Improved redundant relay control circuits are set forth which prevent a load from being energized when any relay coil or contact or stop or start switch contact fails. A first circuit embodiment sets forth a plurality of branches with a cross-monitoring interconnection between a start branch and one of the two other circuit branches. The interconnection prevents a load from being energized when a start switch welds. Second and third circuit embodiments are configured such that the redundant control relay circuit remains inoperative until a fault is cleared although the main power across the circuit is temporarily removed. A fourth circuit embodiment operates independent of relay contact timing.

Abstract: A device for measuring air flow in a conduit is characterized by a flow directing shroud mounted within the conduit and having inlet and outlet portions defining a circular opening through which the air flow is directed. A turbine-type anemometer is positioned within the circular opening such that substantially all air flow within the conduit is directed through the turbine blades, thereby enabling the average flow velocity in the conduit to be determined with a single measurement.

Abstract: A ball bearing plunger actuator for a limit switch is provided with an insert between the ball bearing and the actuator. The insert is disposed into an opening in the distal end of the actuator before insertion of the sphere. After swaging the sphere is captivated within the opening of the actuator with the low friction insert disposed at the bottom of the opening between the sphere and the actuator. In a preferred embodiment of the present invention, the low friction insert is made of a fluorocarbon, such as TFE. Several embodiments of the present invention incorporate inserts which are differently shaped to provide certain advantages in particular adaptations. Two of the embodiments utilized either a generally cylindrical insert with a conical concave part of the insert shaped at one end to receive the ball bearing or, alternatively, a generally flat circular disc of fluorocarbon material which conforms to the bottom of the opening and is inserted into the opening prior to insertion of the sphere.

Abstract: A timed contact switch apparatus has a conventional pushbutton placing a main switch in an actuated state when the pushbutton is depressed. A timing circuit is activated by the pushbutton to provide power to activate an electromechanical latch which holds the main switch in its actuated state while the timing circuit times out. Preferably the timing circuit operation is initiated by output of a Hall sensor which is controlled by a magnet whose position is mechanically linked to the position of the pushbutton.