Abstract: A nozzle plate construction for underjet coke ovens for distributing and metering combustion-supporting air supplied upwardly to regenerators through a sole flue extending parallel to the chamber axis. The sole flue is closed at the top by plate elements having apertures therein. In accordance with the invention, the various plate elements are in the form of troughs having plane base plates each formed with one longitudinal gap therein. Associated with each longitudinal gap is a metering element so mounted at its ends so as to be adjustable in its distance from the plane of the base plate. In this manner, the air flowing upwardly into the regenerator sections can be accurately controlled and uniformly distributed. At the same time, the nozzle plate construction of the invention is light in weight while being very stable and easy to assemble.
Abstract: A ceramic, in particular refractory product is provided comprising a matrix material which contains pores and where the pores are obtained by driving off of opening materials. The product is characterized by pores which are of a flattened shape resulting from platelet shape or flake shape voids. The invention further provides a method for the production of the ceramic product, where a platelet shaped opening material is admixed to the ceramic raw material. The resulting products are characterized by advantageous strength and thermal insulation properties.
October 21, 1983
Date of Patent:
January 7, 1986
Dr. C. Otto & Comp. G.m.b.H.
Walter Ehlert, Karl-Heinz Reuter, Klaus-Jurgen Dietzel
Abstract: A refractory brick is installed in a transfer flue with vertical orifices disposed between, on the one hand, the regenerators or recuperators and, on the other hand, the combustion chambers of industrial gas-fired systems, particularly a coke oven. The refractory brick has parallel surfaces and the length of the orifices in the brick is at least six times their diameter. The sum of the cross-sectional areas of the orifices is from 0.75 to 1.5 times the flow cross section of the upwardly-inclined portion of the transfer flue. The cross sections of the orifices can be cylindrical or elliptical. The orifices can be longitudinal slots whose cross-sectional areas are bounded by semicircles and whose cross-sectional length is not greater than three times the diameter of the semicircles.
Abstract: Disclosed herein is an apparatus for moving material such as metal sheets or strip in production machines. The apparatus includes two spaced-apart, double-acting jacks disposed in parallel relation to the direction of movement for the strip. Each jack comprises two piston rods extending out of opposite ends of the cylinders from a common piston. The piston rods are secured at their free ends to standing columns arranged at the four corners of a rectangular base. A cross member rigidly interconnects the cylinders of the jacks and is provided with two transport grippers having jaws, one of which is moved by a jack to grip the strip at opposite sides thereof. The grippers are disposed in a plane containing the strip and longitudinal axes of the piston rods so that applied forces to the strip coincide with the driving plane of the cylinders.
Abstract: A portable, countertop dishwasher having a washing media dispensing nozzle structure which includes radially-projecting, washing media-dispensing arms and an improved unitary dish rack located in surrounding relationship with the axis of the nozzle structure and axially intermediate upper and lower nozzle structure pivot supports, the unitary dish rack including support structures for supporting articles to be washed within the radial sweep of the radially projecting arms of the nozzle structure and being selectively removable from the dishwasher independently of the nozzle structure.
Abstract: A dual flow distribution header system in which the flow is divided into two paths before the distribution header but after a metering device. The flow is controlled by separate butterfly valves in each path, whereby the control function is magnified and becomes more precise in each path. The invention is particularly adapted for use with industrial heating furnaces employing dual burner systems.
Abstract: Means for cleaning the sealing surfaces of coke oven leveling doors and frames, the cleaning means being installed on a coke-pushing machine without any increase in the normal overall length thereof. A carriage extends between and is movable along guideways mounted on the side walls of a surrounding casing, the carriage being provided with liquid nozzles adapted to be directed at the sealing surfaces of the leveling door frame and the sealing surfaces of the leveling door when rotated upwardly. Nozzles are connected through hoses to a supply of high-pressure liquid, the arrangement being such that as the carriage moves along the guideways, high-pressure liquid issuing from the nozzles will clean the sealing surfaces of a leveling door frame and a leveling door when it is rotated upwardly.
Abstract: A pneumatic massage mat comprises a plurality of juxtaposed air chambers which are expanded and contracted in given sequence by sequentially feeding and bleeding air under pressure into and out of the respective chambers. The air space of each said air chamber is narrowed in the width direction at a substantially central portion and opposed end portions with respect to the longitudinal direction of the chamber such that these narrow portions are filled with a smaller volume of air than the remaining portions.
Abstract: Curing of rubber in a mold is disclosed wherein a desired modulus or viscosity for the cured rubber product is obtained on the basis of an equation developed from a relaxation phenomenon. The cure process may be isothermal and non-isothermal and is controlled in a manner to compensate for acceleration of the cure reaction due to an increase in carbon black filler loading and the effect thereof which broadens the relaxation spectrum. Control of the curing process for the rubber material according to the equation permits response to the effect of the presence of a filler which reduces the activation energy of the viscous flow and that the presence of the filler produces a small effect on the activation energy of the cure reaction.
Abstract: A distributor is disclosed wherein a stator receives highly-pressurized fluid from a stationary source and delivers the same to spaced-apart annular reservoirs in a rotor. Bores in the rotor conduct the fluid to a rotating piston and cylinder assembly. Bearings support the rotor so that an annular orifice is formed by a gap between hardened face surfaces on the stator and rotor. The spacing between the annular reservoirs is greater than the distance to an adjacent drain reservoir. The drain reservoirs deliver fluid to the bearings for lubrication before the fluid is returned to the stationary source.
Abstract: A method for reducing the weight gain in mammals by orally administering over a prolonged period therapeutically effective amounts of pyruvate to which may be added riboflavin. The method also has the effect of increasing the body protein concentration.
Abstract: A bow sight for facilitating the aiming of an arrow including a sighting pin carrier which is movable longitudinally of an elongated frame to position sighting pins carried thereby at selected elevations corresponding to selected target ranges, each carrier being able to carry an assembly of plural sighting pins arranged in side-by-side relationship and each carrier being selectively rotatable to move the sighting pin or pins carried thereby to a sighting position or an out (non-use) position; the carriers being securable by lock means to lock selected sighting pins in either the sighting or the out-position without restricting movement of the sighting pins longitudinally of the frame; and pin guard means for protecting the sighting pins from impact damage and for carrying range markers to assist in positioning the sighting pins at a desired elevation.
Abstract: A high-pressure ball valve includes a valve housing with a bore that sealingly receives a cylindrical extension of a valve member. An inlet bore extending to the bore in the valve housing has a bottom seat against which a ball can seal off the inlet bore. The cylindrical extension has a pocket to receive the ball while engaging a stem that extends through a bore in the valve member against a piston of a single-acting piston and cylinder assembly. An outlet bore extends in the valve housing to the bore therein for delivering the fluid passing into the housing from the outlet bore.
October 1, 1984
Date of Patent:
September 17, 1985
Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
Abstract: A light modulator for generating a beam of amplitude-modulated light including a source of polarized light, at least one and preferably two liquid crystal cells having a thin layer of nematic liquid crystals of positive dielectric anisotropy through which the polarized light is directed to produce a beam of light having a phase shift corresponding to a modulating electrical signal which is applied to each of the liquid crystal cells. The liquid crystal cells in addition have a continuing electrical bias applied across the layers in order to achieve the rapid response times necessary to achieve phase modulation of the polarized light. The resulting phase-modulated light is converted in a linear polarizer to amplitude-modulated light corresponding to the modulating electrical signal. The amplitude-modulated light is detected in a suitable light detector which generates an electrical signal corresponding to the modulating electrical signal.
Abstract: A process is disclosed for removing sulfur and ash, particularly clay and pyrite from coal particles having a mesh size of 30 or less. A slurry of coal particles is agitated in an ultrasonic mixer to separate the contaminants from the coal and weaken chemically-bonded contaminants on the coal surface. The clay and pyrite particles are dispersed as a colloid in the aqueous medium of the slurry. Treatment of the slurry with sonic energy also subdivides the particles along ash or clay seams. The slurry is then separated in a centrifuge and in froth-flotation cells so that coal particles greater than 2 microns are recovered and a slurry is again formed. The repulped slurry is then treated with sonic energy and ozone to release further quantities of surface components from the coal particles. The slurry is again treated in a centrifuge and coal particles 2 microns and greater are recovered.
Abstract: A rolling mill is disclosed wherein mill housings have an inverted U-shape forming windows that receive chocks for roll assemblies. The windows are open at the bottoms of the housings and chocks for the lower roll assembly have lugs that project into recesses formed in the lower portions of the housing post sections and rest against removable keys supported in slots that are generally parallel to the rotational axis of the roll assembly. A platform supports the rolling mill when processing workpieces. Pad surfaces on the platform engage the lower end faces of the housing post sections and anchors engage the housing post sections at the sides thereof which are opposite the housing windows to resist a component of the rolling load transferred by the keys to the housing post sections.
Abstract: A catalytic gas detector circuit in which a resistive gas detector element is common to two bridge circuits, and wherein the resistance and temperature of the detector element are maintained essentially constant. This permits the use of a dynamic compensator element without encountering hysteresis effects and improves the response time of the circuit.
Abstract: A roll-off hoist is mounted onto a vehicle to swing about a pivot at the aft end of the vehicle while the hoist moves along a slide plate supported by the pivot. A piston and cylinder assembly is coupled between the slide plate and the aft end of the hoist rails. As the hoist rails jut from the rear of the vehicle chassis, other piston and cylinder assemblies cause the forward portion of the hoist rails to swing above the chassis. The aft end portion of the hoist rails descends to ground level to receive the forward portion of a roll-off container which is drawn onto the hoist rails by a powerful winch. The piston and cylinder assemblies connected to the forward portion of the hoist rails are used to swing the hoist rails about the pivot while the piston and cylinder assembly in the rear portion of the hoist rails is inoperative to thereby elevate a container with the forward portion thereof extending high above ground level for dumping material in the container from an opening at the aft portion thereof.
Abstract: A piece of carpet is placed in a press equipped with a cutting tool and with a plate through which pattern on the carpet can be viewed when the plate overlies the carpet. The position of the plate relative to the cutting tool is accurately controlled and the plate can be moved away from the piece of carpet prior to cutting of the latter. The plate has indicating means which can be aligned visually with selected elements of the pattern of the carpet by manual adjustment of the latter to enable the carpet to be cut at predetermined positions with respect to the pattern.