Abstract: A vehicle fleet navigation system includes a main mobile navigation system, at least one secondary mobile navigation system, and a land based navigation system. The main mobile navigation system includes a navigation unit for determining the position of the main vehicle, a visual display for displaying the position of the main vehicle, and a wireless transceiver in communication with the navigation unit. The secondary system includes a second navigation unit for determining the position of the second vehicle, and a second wireless transceiver in communication with the second navigation unit. The second wireless transceiver is operable to transmit a position signal corresponding to positional information of the second vehicle received from the second navigation unit. The main mobile navigation system is operable to receive the positional information of the second vehicle and display the position of the second vehicle on the visual display.

Abstract: The present invention serves to prevent severe injury, loss of life or damage to expensive equipment by creating a system in which the conductors of a plug and the conductors of a receptacle can only be arranged, one with respect to the other, in a unique rotational manner depending upon the intended electrical rating of the plug and receptacle. The resulting plug will mate only with a receptacle having that same configuration. A separate indexer is disposed between the plug body and the conductor assembly to the conductors in the plug to prevent entry of the plug into a differently indexed receptacle. A polarizer in the receptacle fixes the conductor assembly of the receptacle in the same manner as the plug, to allow the plug and receptacle to be mated together when the receptacle is wired for the same electrical rating as the equipment to be energized by the plug.

Abstract: A conduit liner having a continuously cylindrical body having a first opening and diametrically opposed second opening, a flange which extends circumferentially around the first opening and which is integrally formed with the body, a hollow interior to encapsulate at least one wire extending through the conduit, and a plurality of flexible and collapsible fins extend along and protrude from an external surface of the body.

Abstract: An explosion-proof electrical conduit sealing fitting for threadedly engaging at least two threaded conduits and surrounding at least one conductor running through two threaded conduits includes a first element having a portion threadedly engaging at least one of at least two threaded conduits; a second element having a portion threadedly engaging at least one of the at least two threaded conduits, and connections for the first element and the second element. When properly connected and screwed into place, the sealing fitting of the present invention completely surrounds the at least one conductor and threadedly engages all of at least two threaded conduits.

Abstract: An airconditioning control system for an automotive vehicle includes a flow control responsive to individual inputs from multiple locations within the motor vehicle for providing conditioned air processed by a blower, an evaporator and a heater, with air being provided at selected flow rates to each of the locations, with each of the flow rates being independent of the other.

Abstract: An improved fiber reinforced material for use in the manufacture of gaskets is produced by impregnating a nonwoven fabric with an aqueous dispersion of a rubber and filler. The water is then evaporated out of the impregnated fabric. The final product is formed by curing the rubber under heat and pressure.

Abstract: The combination breather-drain is designed to be disposed in the bottom of an explosion proof housing to facilitate the drainage of moisture from the housing by gravity while simultaneously providing an atmospheric communication with the interior of the housing through a separate passage. The passage for the drainage of moisture is defined by a loose threaded connection between a hollow cylindrical plug and a fitting secured to the bottom of the housing. The threaded connection is so dimensioned as to prevent the passage of a flame through the threaded connection. A plurality of baffles or a solid threaded plug are provided in the interior of the hollow cylindrical plug to provide an air passage so dimensioned as to prevent the passage of the flame therethrough.

Abstract: The fire barrier assembly is comprised of a frame through which one or more electrical cables may be passed and a plurality of sealing elements clamped in the frame in contact with each electrical cable and the frame to provide an airtight barrier. Each element has a plate-like configuration and is comprised of an elastomeric body having intumescent material mixed therewith and opposing end members connected by bolts so that upon movement of the end members toward each other the elastomeric body will expand into intimate engagement with adjacent elements, the frame and each cable passing through the frame. Adjacent elements on opposite sides of an electrical cable are provided with complimentary grooves to define a cylindrical passage for each cable and additional filler elements may be provided without grooves. An external coating of intumescent material is applied to the outer surfaces only of the frame and end members to provide a heat insulating layer.

Abstract: A cable tray conduit clamp is comprised of a single one-piece body having a 90.degree. sector plate, a square block protruding from one surface thereof with two sides in alignment with the radii of said sector plate and a bevelled boss protruding from the opposite surface of said plate with two sides thereof disposed in alignment with the radii of said sector plate. The extent of said block along the radii of said plate is substantially greater than the extent of said boss along said radii of said plate while the radial extent of said sector plate is substantially greater than the radial extent of said block. A pair of perpendicular intersecting bores are formed through the block and continue outwardly to the curved periphery of the sector plate as open channels in the surface of the plate from which the block protrudes. A J-shaped bolt having a sleeve nut threaded thereon is secured in one of the channels for clamping the body to a flange cable tray.

Abstract: A cable tray conduit clamp is comprised of a single one-piece body having two parallel plates extending outwardly from a common post located in one corner of the plates. A plurality of set screws are provided in one plate for securing the flange of a cable tray between plates. The post is provided with a bore in which the shank of a rod having a hooked end is freely rotatable. A locknut is threaded on a opposite end of the shank whereby a conduit may be clamped between the hooked end of the rod and the outer surface of one of the plates at any angle relative to the longitudinal direction of the cable tray to which the clamp is secured.

Abstract: A coupling which allows for linear or angular displacement as well as for expansion or contraction is comprised of two independent hubs adapted to be threaded on the ends of opposed spaced apart conduits, a flexible grounding strap connected between said hubs, a flexible watertight jacket substantially surrounding and clamped to said hubs at each end and a tubular raceway having flared ends moveably retained within each of said hubs to protect wires running through the coupling.

Abstract: A self-threading fitting having external threads at one end and tapered internal threads at the other end is provided with a snap-in tubular lining of insulating material which extends beyond the end of the fitting having the internal threads for insertion into a conduit to which the self-threading fitting is to be secured to thereby provide a guide which will insure axial alignment of the fitting with the conduit while insulating through wiring from the metal fitting.