Abstract: A load supporting assembly for a trailer includes an elongated frame, a platform subassembly having a middle fixed platform section, a pair of front and rear pivotal platform sections being pivotally mounted to the middle fixed platform section and a pair of linkages movably interconnecting the front and rear pivotal platform sections such that the front and rear pivotal platform sections can pivot independently of and automatically relative to one another and to the middle fixed platform section and the frame without the need for any substantial operator intervention and in response to an operator driving a vehicle onto or from the platform assembly. The vehicle in being loaded onto the platform subassembly can push the front pivotal platform section down from the respective raised to lower position thereof without any corresponding movement of the rear pivotal platform section.

Abstract: A generator support base and storage tank assembly includes an outer support frame structure and an inner arcuate-shaped structure. The outer support frame structure is formed by a pair of substantially vertical flat end plates and a substantially horizontal flat top plate fixedly connected at opposite ends to upper ends of the vertical end plates. The inner arcuate-shaped structure underlies and is fixedly connected at its opposite upper longitudinal edges to the underside of the horizontal top plate. The inner arcuate-shaped structure also extends between and is fixedly connected at its opposite end edges to the inside of the vertical end plates. These connections of the inner arcuate-shaped structure to the outer support frame structure provides sufficient structural reinforcement and strengthening of the outer support frame structure to support the electrical generator on the horizontal flat top plate thereof.

Abstract: A lifting and towing unit mountable on a fifth wheel of a towing vehicle has an anchoring frame assembly with a king pin for coupling to the towing vehicle fifth wheel and a lifting frame assembly adapted to support a portion of a mobile load and to be releasably attached thereto and to the anchoring frame assembly in a fixed relation thereto. The unit also includes an arrangement in the form of a four-bar linkage interconnecting and mounting the lifting frame assembly rearwardly of and to the anchoring frame assembly for pivotal movement relative to the frame of the towing vehicle between lowered and raised positions.

Abstract: A recovery unit for use by one truck tractor in towing another disabled truck tractor has an anchoring frame assembly with a king pin for coupling to a fifth wheel of the towing tractor and an attaching frame assembly with a king pin for coupling to a fifth wheel of the disabled tractor. The attaching frame assembly is mounted for pivotal movement relative to the anchoring frame assembly between stored and extended conditions. Actuating cylinders and an auxiliary frame assembly are selectively operable to pivot the attaching frame assembly relative to the anchoring frame assembly between the stored and extended conditions and to pivot the attaching frame assembly to and from an erected position relative to the anchoring frame assembly once the attaching frame assembly has been first moved to its extended condition and coupled to the fifth wheel of the disabled tractor.

Abstract: A hitch uncouple detecting and signaling apparatus, being applied to a trailer hitch ball member, includes a plunger rod reciprocally mounted vertically through the ball member. The rod is longer than the ball member, allowing the rod to extend either above or below opposite upper and lower ends of the ball member. The rod is composed of electrically nonconductive material capable of being trimmed to a length which will exceed the ball member height at least by a desired amount. An electrical circuit adapted for connection to a source of electrical power includes an operator signaling device and a pair of contacts. One contact is carried by a lower end of the rod and the other contact is defined on the lower end of the ball member, which preferably is composed of electrically conductive material.