Abstract: A screw having a primary thread extending along its shank and terminating at the screw head is formed with a supplemental thread extending between adjacent convolutions of the primary thread and also terminating at the head of the screw. The spaced termini of the two threads maintain a washer at the head in a position perpendicular to the axis of the shank of the screw.

Abstract: A fastener having a shank and head, the latter formed with a recess in its lower surface. A gasket is positioned in the recess, which it partially fills until the screw is employed to joint two elements and the gasket is compressed so that it fills the entirety of the recess, thereby preventing the ingress of undesirable materials.

Abstract: A device for mechanically impaling a worm on a hook includes a housing enclosing a passageway that terminates in a bait receiving aperture and a hook receiving aperture. Application of suction within the passageway impels a worm at the bait receiving aperture toward and onto a hook located in the passageway at the hook receiving aperture.

Abstract: A class of water insoluble iodophors comprising complexes of iodine with various nylons such as nylon-4,6, nylon-6, nylon-6,6 or other polyamides is disclosed. These nylons complexed with iodine can be made in various forms such as powders, pellets, molded objects, granules, films, monofilaments, and either non-woven or woven fabrics. These nylon based iodophors and other water insoluble iodophors herein disclosed can find product applications in the fields of air treatment, water treatment, public hygiene and medicine.

Abstract: Apparatus for washing the wheels and tires of a vehicle includes an elongated tank into which vehicle to be washed enters and exits, and a plurality of impediments spaced along the bottom of the tank. The impediments are in the form of hollow angle irons with apertures formed in at least one of their side walls, and means is provided for spraying water through the apertures in the direction of the vehicle wheels and tires as the vehicle passes over the angle irons.

Abstract: An otherwise conventional measuring tape which typically includes a six-faced housing or casing with a flexible and spring biased measuring tape spirally wound therein, is provided with a pair of straight wings. Each wing is pivoted at one end thereof to one face or surface of the housing by its own pivot pin. Each wing, near its respective pivot pin, is provided with an arcuate set of teeth, as in the form of gear teeth. These two sets of teeth intermesh with each other so that when one wing is rotated about its pivot, the other wing will rotate as well. Upon angular extension of the wings to their open position, they are aligned and form a straight edge. In their closed or nested position, they do not interfere with the usual mode of operation of the tape and casing. Each wing is L-shaped in transverse cross-section.

Abstract: A method of killing protozoa comprises subjecting the protozoa to an effective amount of extract of the hop plant. Such protozoicidal effect is increased when the hop extract is further treated with carbon dioxide.

Abstract: A method of killing protozoa comprises subjecting the protozoa to an effective amount of extract of the hop plant. Such protozoicidal effect is increased when the hop extract is further treated with carbon dioxide.

Abstract: A method of playing a game in which one constructor player assembles a group of variously shaped blocks into a construct and other players attempt to duplicate the construct only through verbal directions from the constructor player.

Abstract: A class of water insoluble iodophors comprising complexes of iodine with various nylons such as nylon-4,6, nylon-6, nylon-6,6 or other polyamides is disclosed. These nylons complexed with iodine can be made in various forms such as powders, pellets, molded objects, granules, films, monofilaments, and either non-woven or woven fabrics. These nylon based iodophors and other water insoluble iodophors herein disclosed can find product applications in the fields of air treatment, water treatment, public hygiene and medicine.

Abstract: A photovoltaic device including a solar panel and a container housing phase change materials positioned together so that heat generated during operation of the cells in the panel will melt the phase change materials, thereby storing heat and lowering the operating temperature of the cells.

Abstract: A method to manufacture thin film solar cell in which a solar cell to convert directly light to electricity is formed by depositing silicon material on a carrier substrate having a coating which is liquid on the deposition temperature. An article manufactured according to this method. A machine for the manufacture of thin film solar cells.

Abstract: A silicon solar energy cell having a diffusant junction extending inwardly from one surface, an aluminum-silicon junction of the opposite polarity extending inwardly from the other surface, and a film of aluminum-oxygen-diffusant formed over the aluminum-silicon junction. The structure is formed by diffusing an unprotected wafer, coating the diffusant glass so formed on one side of the wafer with aluminum, and heating the wafer.

Abstract: A solar panel having solar cells adhered to the base surface thereof by a single component, room temperature vulcanizing silicone resin and encapsulated in a multicomponent silicone resin with desirable optical properties.

Abstract: A silicon solar energy cell having a diffusant junction extending inwardly from one surface, an aluminum-silicon junction of the opposite polarity extending inwardly from the other surface, and a film of aluminum-oxygen-diffusant formed over the aluminum-silicon junction. The structure is formed by diffusing an unprotected wafer, coating the diffusant glass so formed on one side of the wafer with aluminum, and heating the wafer.