Abstract: An oven rack assembly to support cooking vessels within an oven that is capable of being pulled outwardly and upwardly exterior to the oven's interior heating chamber. The rack is situated within a frame generally conforming to the shape and size of the interior cooking region of a conventional oven. Generally L-shaped arms are pivotally attached to the rack and the frame, the arms being of a shape and dimension to allow the rack, when pulled and removed from the interior of the oven, to be raised to any one of several heights, including a height approximately equal to that of the upper exterior surface of the oven, while maintaining a horizontal orientation at all times. The assembly has a locking mechanism to allow the user to raise the rack to any one of several convenient heights.

Abstract: An improved method and apparatus for forming metallized iron by direct reduction of particulate iron oxide is disclosed. Spent reducing gas is recycled from the reduction furnace through a cooler-scrubber and a catalyst-containing stoichiometric gas reformer. Upon removing the process gas from the cooler-scrubber, it is contacted with a chlorine dioxide spray, then compressed and cooled, the sulfur compound removed, and the process gas recycled either into the furnace cooling zone, or directly into the reformer, or divided and directed into both uses. Thus, most of the sulfur containing components of the spent reducing gas are removed, thereby reducing the sulfur contamination of the gas reformer catalyst. Reducing sulfur contamination of the gas reformer catalyst improves the overall efficiency of the direct reduction process. Either high sulfur ores, or high sulfur process gas, or both can be utilized in the invented process.

Abstract: An improved beach towel or blanket having compartments or pockets therein for holding articles. The pockets have integral closures, and may be lined with waterproof or water-repellent material.

Abstract: A method and device for contactless measurement of electric voltages in a unit under measurement with an insulating surface, a primary electron beam being directed onto the insulating surface of the unit. The energy of the secondary electrons in a secondary electron flow generated at the insulating surface of the unit is measured and the potential of a conducting zone located below the insulating surface of the unit is derived from this measurement. In order to increase the measurement precision, an electric alternating absorption field is generated above the unit under measurement and the measurement of the energy of the secondary electrons is carried out in synchronism with the alternating field.

Abstract: A method and apparatus for the production of iron carbide in a shaft furnace, by reacting a carbon containing reducing gas as the process gas with particulate metal oxide material for an extended residence time at low temperature.

Abstract: A method of producing direct reduced iron from pellets, lumps and fines of iron oxide. A mixture of iron oxide raw material is introduced to an apparatus which separates the lumps and pellets from the fines. The lumps and pellets are then introduced to a shaft furnace for direct reduction to iron. Fines are conveyed to a series of circulating fluidizable beds which allows intimate contact with reducing gas to facilitate the direct reduction of the iron oxide fines to metallized iron.

Abstract: A method and apparatus for producing direct reduced iron from iron oxide fines. The iron oxide raw material is conducted through a series of circulating fluidizable beds in which the fluidizing gas is a strong reducing gas mixture, which allows intimate contact between the fines and the reducing gas to facilitate the direct reduction of the iron oxide fines to metallized iron.

Abstract: A vaneless rotor airlock valve using a single seat. In the preferred embodiment a hollow rotor is supported by two bearings to rotate within a first bore of the valve housing, which includes intersecting transverse bores. The rotor includes an opening which extends a selected distance along the axis of the rotor and a distance of less than 90 degrees in a plane perpendicular to the axis. The ends of the second bore terminate at the input port and the output port of the valve. Sealing contact is maintained between the outer surface of the rotor and a non-metallic seat member to maintain pressure isolation between the input port and the output port as the rotor is rotated to alternately position the rotor in a fill and a discharge position. All portions of the interior of the valve are free draining under the force of gravity.

Abstract: A process for manufacturing an integratable capacitative pressure sensor includes the following steps, starting from a semiconductor substrate (1): application of a guard film (2), precipitation of a polycrystalline semiconductor film (4), doping the polycrystalline semiconductor film (4) and removal of the guard film (2) by etching; then insulating the semiconductor zone (7) from the semiconductor substrate (1), and applying an insulator film (8) on the insulated semiconductor zone (7). The pressure sensor product, which is compatible with CMOS circuits and has increased sensor accuracy, includes a semiconductor zone (7) insulated from the semiconductor substrate (1) and an insulator film (8) applied on the insulated semiconductor zone (7), the polycrystalline semiconductor film (4) being located on the insulator film (8) above the insulated semiconductor zone (7).

Abstract: A bearing housing, particularly for a liquid ring vacuum pump, having two cylindrical aligning members and the housing with two cylindrical groove-containing receiving members which provides self alignment of the bearing bracket with respect to the liquid ring vacuum pump.

Abstract: An integrated power switch structure comprises a lateral MOS transistor (3) and a lateral or vertical thyristor (2). The drain-source path of the lateral MOS transistor (3) is in series with the cathode-anode path of the thyristor (2). In order to ensure that the power switch structure reliably switches on and off with great dielectric strength and low switch-on resistance, at least the source electrode of the lateral MOS transistor (3) is insulated against the substrate (7) by means of a buried oxide layer (8) in accordance with the present invention.

Abstract: A slatwall assembly having modular channels formed independently of the wallboard material, which channels are slidably adjustable in both a horizontal and vertical manner, and which can be installed in any desired configuration, the slatwall assembly having components which are lightweight and more easy to install than known systems. The modular slatwall assembly has an outer member, an inner support member, and a connector. Each outer member defines a front channel for receiving merchandise display devices and a rear channel. Each inner support member defines a support channel and is fixed in a generally vertical fashion to the inner supports of the wall structure. The outer member and inner support member are slidably connected by a connector having two disc-shaped heads connected by a central post.

Abstract: A replacement cleat or spike structure for attachment to the outer surface of a worn cleat or spike depending from the sole of a shoe, having a generally hollow, conical spike member attached at its base to a circular, dish-shaped flange. The hollow portion of the spike member is of a sufficient dimension to receive the nub of a worn spike attached to the sole of a golf shoe. The spike structure is placed onto the nub and flange of the worn spike and is held in place by epoxy or other suitable adhesive means.

Abstract: A method and apparatus for limiting the passage of a gas such as air through an opening, particularly an opening through which solid material passes, by providing a sealing chamber in advance of the entrance to the low pressure chamber having a large plenum with a variable speed exhaust blower in its upper portion, and a grate situated in its lower portion for access of air to the plenum. The blower speed is responsive to differential pressure measurements taken in the low pressure chamber and immediately adjacent the exterior of the low pressure chamber. Upstream of the plenum are one or more mechanical seals or flexible baffles which contact the top of the solid charge material and ride over it as the solid material passes beneath the mechanical seal.

Abstract: A method and apparatus for reducing the production or emission of noxious gases while continuously preheating a mixture of iron-bearing scrap charge materials for an electric steelmaking furnace operation with off-gas from, the furnace, including provision for controlled combustion within the preheating chamber. Removed gases are then treated by thermal incineration of combustible residual matter before release into the atmosphere to insure that no noxious gases are emitted.