Abstract: A device for a receiver-type hitch used on vehicles for towing a load, wherein the device acts to prevent movement and resultant rattling between a receiver tube of the hitch and a ball mount shank. In operation, the receiver tube receives the ball mount shank. The device applies a force to the ball mount shank which presses the ball mount shank against the inside of the receiver tube and therein prevents movement.

Abstract: A device for a receiver-type hitch used on vehicles for towing a load, wherein the device acts to prevent movement and resultant rattling between a receiver tube of the hitch and a ball mount shank. In operation, the receiver tube receives the ball mount shank. The device applies a force to the ball mount shank which presses the ball mount shank against the inside of the receiver tube and therein prevents movement.

Abstract: A refractive energy window system which uses light energy to heat the air. The system has a solar panel which focuses the light energy on the air when the air passes through the solar panel. A frame structure is used to support and hold the solar panel. The frame has an input section which draws the air into the solar panel and an output section which outputs the air after the air has passed through the solar panel and has been heated by the light energy.

Abstract: A ramp assembly facilitating the loading and unloading of a truck comprises two telescoping ramp sections including a forward section and a rearward section movable relative to each other between a full length ramp operating configuration and a stowed configuration. In one embodiment, the side rails of the rearward section of the ramp are slidably received within sleeve-like side rails of the forward section. In the stowed configuration of the ramp assembly, the ramp assembly is approximately half its fully extended length and fits between the existing longitudinal chassis frame members under the cargo deck of the truck without interfering with the housing of the truck differential. Accordingly, the invention makes possible the use of a full length ramp with virtually all truck sizes.

Abstract: The present invention relates to a solar energy water heating apparatus. The apparatus is comprised of a solar panel having a plurality of channels through which the water flows. Each channel has a top lens portion which focuses and intensifies the light energy of the sun on the water. This allows the water to be heated in a more efficient and effective manner. An end cap is coupled to each end of the solar panel. The end caps prevent the water from leaking out of the solar panel. A nozzle is coupled to the end cap which allows the water to enter the apparatus and exit the solar panel once the water has been heated.