Abstract: A safety lock for a trailer hitch is disclosed which not only eliminates the need for safety chains but also which prevents the theft of the trailer when the trailer has been disconnected from a vehicle.

Abstract: A device for electrically connecting a vehicle electrical system to the electrical system of a trailer is disclosed which automatically connects the same when the kingpin of the trailer is secured to the fifth wheel hitch of the vehicle.

Abstract: A trailer hitch is disclosed which eliminates the need for safety chains. The trailer hitch includes a locking device which is selectively pivotally secured to the tongue of a trailer or the hitch ball coupler assembly at the forward end of the tongue or to both the hitch ball coupler assembly and the tongue. The locking device is selectively movable between locked and unlocked positions. When the locking device is in its locked position, the locking device prevents the disconnection of the hitch ball coupler assembly from the hitch ball.

Abstract: A gooseneck hitching system is disclosed which couples the gooseneck hitch of a trailer to a hitch ball of a vehicle through the use of a remotely RF controlled linear actuator which also includes a locking receptacle structure mounted on the bed of the vehicle which replaces the conventional safety chain arrangement.

Abstract: A means for electrically connecting a vehicle electrical system to a trailer is disclosed which automatically connects the same when the hitch of the trailer is mounted on the vehicle hitch. Four different embodiments of the invention are disclosed.

Abstract: A means for electrically connecting a vehicle electrical system to a trailer is disclosed which automatically connects the same when the hitch of the trailer is mounted on the vehicle hitch. Four different embodiments of the invention are disclosed.

Abstract: A means for electrically connecting a vehicle electrical system to a trailer is disclosed which automatically connects the same when the hitch of the trailer is mounted on the vehicle hitch. Four different embodiments of the invention are disclosed.

Abstract: A means for electrically connecting a vehicle electrical system to a trailer is disclosed which automatically connects the same when the hitch of the trailer is mounted on the vehicle hitch. Four different embodiments of the invention are disclosed.

Abstract: A temporary attachment for use with pipe hangers is disclosed which includes an elongated angle member which is supported upon the lower end of a pipe hanger and which has a plurality of ball transfer units positioned thereon which support the pipe being hung. The ball transfer units not only permit the longitudinal movement of the associated pipe with respect to the pipe hanger but also permits the pipe to be rotated about its longitudinal axis with respect to the pipe hanger.

Abstract: A temporary attachment for use with pipe hangers is disclosed which includes an elongated angle member which is supported upon the lower end of a pipe hanger and which has a plurality of ball transfer units positioned thereon which support the pipe being hung. The ball transfer units not only permit the longitudinal movement of the associated pipe with respect to the pipe hanger but also permits the pipe to be rotated about its longitudinal axis with respect to the pipe hanger.

Abstract: The invention comprises a non-weld coupling and method adapted to connect two conduits. The conduits may be pipes, hoses, valves or the like and may be cylindrical, rectangular or the like, in shape. The first embodiment relates to conduits where there may be a degree of misalignment therebetween and which the coupling is adapted to accommodate. In this first embodiment, the coupling comprises a seal flange, seal block and seal ring. The flange, block and ring have mating surfaces defining a radius of curvature which permit the components to be pivoted and rotated relative to the pipe while still maintaining a fluid or air tight fit therebetween. The second embodiment relates to the coupling of two conduit segments in substantial alignment.