Abstract: A cargo carrier designed to be mounted adjacent to and onto a vehicle by attaching it to the vehicle's trailer hitch having a crossbar and a receiver. The cargo carrier has a substantially S-shaped tongue having a male bracket that couples with the receiver on the trailer hitch, thereby mounting the cargo carrier onto the vehicle. The male bracket is held in the receiver by means of a pin. An elongated frame, having a fixed arm and a swing-out arm which is constructed of essentially parallel beams and connected to said fixed arm by a pivot hinge, is integral with and is supported by said tongue. The fixed arm is reinforced by frame support members connecting said arm with the tongue. Load support brackets are carried on the swing-out arm and serve to mount a cargo holder device thereupon, the cargo holder device being a box with a lid, an open bin, or any other desired device.

Abstract: The invention claimed is a collimator for x-rays and the fabrication process for said collimator. The collimator, in its preferred embodiment, displays the general shape of a tube, having two apertures, an entrance aperture and an exit aperture. The walls of the collimator tube are not parallel to each other but rather are paraboloidal in longitudinal section. The geometry of the collimator tube is, therefore, circular in transverse cross-section and paraboloidal in longitudinal section, thereby resulting in a tube whose entrance aperture is of a smaller diameter than its exit aperture. The collimator geometry described is referred to herein as a tubular paraboloid.

Abstract: A multihull windsurfer providing increased sailing stability, exceptional steerability and providing a moveable mast allowing for an adjustable sail carrying capacity. The preferred embodiment is a catamaran with hulls that are elongated, upwardly curved and substantially triangular in transverse cross-section, thereby forming keels. Dual rudders, disposed in tandem, are mounted under each hull and are controlled through a steering assembly. One rudder in each pair is removable so that the steering sensitivity of the boat may be varied. The mast is fully articulating and is disposed with a sail and a manually engageable boom. The mast is carried on a mast mount comprising a mast track assembly which is slidably adjustable fore and aft, so that the mast may be moved forward or rearward on the vessel, thereby providing for an adjustable sail area. The hulls are attached to and held substantially parallel by a platform providing deck space for the sailor.