Abstract: A fingerprint sensing system comprising a device connection interface including a device reference potential input, a sensing arrangement, and sensing reference potential providing circuitry. The sensing arrangement includes multiple sensing structures and read-out circuitry connected to each of the sensing structures.

Abstract: A fingerprint sensing system comprising a device connection interface including a device reference potential input, a sensing arrangement, and sensing reference potential providing circuitry. The sensing arrangement includes multiple sensing structures and read-out circuitry connected to each of the sensing structures.

Abstract: A method of the conversion of a heat of molten metal, especially steel, into a finished product forms a continuous primary strand of solidified metal from a heat and then applies one or more successive layers of molten metal from the same heat to one or both sides of the primary strand under conditions where the additional layers alloy or integrate with the primary strand, the composite strand, like the primary strand, being quickly solidified to develop throughout the body a fine grain structure characteristic of a thin layer of metal that quickly chills from a molten state.

Abstract: Molten metal is confined to a particular space or excluded from entering some opening or crevice by utilizing the field around an electrical conductor connected with a source of alternating current to repel the molten metal from the opening or crevice, resulting in better and more uniform continuous castings.

Abstract: Molten metal, and particularly molten steel, is continuously converted into a thin strip or strand having the fine grain structure that is found in the thin layer of metal that exists at the surface of a cast ingot where the metal in contact with the cold mold wall solidifies rapidly, and which is sometimes designated the chill layer. The molten metal is contained in a refractory vessel having an open face which is covered in part or entirely by a continuously-moving cold member against which the molten metal solidifies and by which it is carried out of contact with the molten metal in the vessel, the molten metal in the vessel being replenished as it is removed in this manner. Contact between the moving cold surface and the molten metal is effected or controlled in some manner by utilizing the field generated about a conductor energized from an alternating current field to repel a non-magnetic conductor, which includes molten metal.

Abstract: To take advantage of the fact that molten metal which first solidifies against a mold surface has better grain structure and closer chemical identity to the molten metal than the inner portions of a casting, a skin or thin layer of metal forming on a cold surface, such as a revolving water-cooled roll partly immersed in molten metal, is continuously stripped from said surface and almost immediately welded or fused under pressure to the surface of similarly-formed layers to make a unitary finished or semi-finished product. The layers so welded together may be separately formed, or comprise parts of a single layer folded or bent into surface-to-surface contact.