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| Number | Title | Issue Date |
| 5006265 | Filter apparatus and method for removing solids from fluids The invention is a filter apparatus and method for separating suspended solids from fluids, particularly liquids. A filter chamber is defined inside a filter housing. Inside the chamber is a filter bundle, consisting of two or more filter screens, of a no... | 04/09/1991 |
| 4995202 | Nozzle unit and method for using wet abrasives to clean hard surfaces The invention is a nozzle unit designed for use with wet abrasive materials to clean hard surfaces, such as steel structures. The nozzle unit is formed from two nozzle bodies, which are joined together. Each body has a lengthwise bore therein, with a vent... | 02/26/1991 |
| 4928839 | Plastic drums for storing or transporting liquid and solid products The invention refers to plastic drums designed such that the bottom of the drum will interlock with the lid of another drum. This feature enables the drums to be placed in stacks that are stable, so they can be safely handled during shipping, storing, or ... | 05/29/1990 |
| 4926894 | Apparatus and method for draining a viscous material from a vessel The invention is an apparatus and method for draining a viscous material, such as a molten polymer, from a vessel that contains the material. A ram-type valve is mounted on the outside of the vessel in line with a drain opening in the vessel. The valve is... | 05/22/1990 |
| 4889182 | Heat exchanger The heat exchanger disclosed herein includes a head section and a heat exchanging section. The heat exchanging section consists of a bundle of inner conduits, open at both ends, and a bundle of outer conduits, open only at one end. The outer conduits encl... | 12/26/1989 |
| 4847859 | Device and method for cooling a high temperature furnace The invention is a device and method for cooling a high temperature furnace. A typical high temperature furnace will include a hot zone that is insulated with carbon-based materials, such as lamp-black. The cooling device is a probe consisting of two elon... | 07/11/1989 |
| 4808319 | Method for removing a slime deposit from packing material inside a tower Air stripping is a common technique used to remove organic impurities from water found in underground aquifers. When this technique is used, bacteria already present in the underground water, and bacteria and oxygen introduced into the water by the incomi... | 02/28/1989 |
| 4798508 | Machine and method for opening a filled bag, emptying the bag, and disposing of the empty bag The invention is a machine and method for opening a filled bag and emptying the contents of the bag. A bag filled with a solid material is guided into a space between a pair of rotating drums, in which there are several rows of rigid spikes fastened to ea... | 01/17/1989 |
| 4759262 | Apparatus for restraining rotary motion of a motor component The invention is an apparatus that allows a motor to move in any one of three linear directions, but it restrains rotary motion of the motor housing. In practice, the motor is used for driving a pump or some other rotary motion device. The device includes... | 07/26/1988 |
| 4754775 | Device and method for preventing water from flowing past a closed valve in a pipeline The invention is a sealer unit useful for temporarily preventing water from flowing past a closed valve in a pipeline, such as a butterfly valve. This unit includes a cup-shaped seal member, and a solid plug member that fits inside the seal member. The se... | 07/05/1988 |
| 4752305 | Device and method for separating individual fluids from a mixture of fluids A device and method is disclosed for separating individual fluids (particularly gases) from a stream that contains more than one fluid. The separator device is made up of a bundle of hollow fibers fastened into a resin tubesheet at each end of the bundle.... | 06/21/1988 |
| 4750435 | System for detecting slag level in a solid fuels gasification reactor The invention is a system for detecting the level of slag in a solid fuels gasification reactor. In this invention a pokerod is extended into the quench chamber of the reactor, and pulled back to a retract position, in a timed sequence. The timed sequence... | 06/14/1988 |
| 4720330 | Device and method for electroplating a workpiece having axial symmetry The invention is a device and method for electroplating a metal workpiece having axial symmetry, such as a circular workpiece. In this invention the workpiece, which is the cathode, is rotated inside an anode structure submerged in the plating solution. P... | 01/19/1988 |
| 4713089 | System and method for removing volatile components from an aqueous medium A system and method is disclosed for removing dissolved organic impurities, such as gasoline or other hydrocarbons, from groundwater. The contaminated water is fed into a stripper column, operated under a deep vacuum, to enable the water to enter the colu... | 12/15/1987 |
| 4707267 | Device and method for separating individual fluids from a mixture of fluids A device and method is disclosed for separating individual fluids (particularly gases) from a stream that contains more than one fluid. The separator device is made up of a bundle of hollow fibers, which are fastened at each end into a resin tubesheet. Th... | 11/17/1987 |
| 4702009 | Device for measuring the level of a material stored in a tank An indicator device is disclosed that is useful for measuring the level of a material stored in a tank. The device includes a stationary tubular section that fastens into the top wall of the tank. One or more tubular sections of smaller diameter are made ... | 10/27/1987 |
| 4688370 | Method and machine for filing and sealing a multiwall valve bag The invention is a method and machine for filling and sealing a multiwall valve bag. The bag is fabricated with a valve structure that has at least two separated layers of a polymer composition capable of being heated by electromagnetic energy in the radi... | 08/25/1987 |
| 4614435 | Machine for mixing solid particles with a fluid composition The machine disclosed herein is useful for blending solids with fluids. In a typical operation, sand is mixed with a gel composition to obtain a fluid mixture suitable for stimulation treatments of oil and gas wells. The machine includes a slinger member,... | 09/30/1986 |
| 4605438 | Apparatus and method for forming a wear-resistant metal composition The invention described herein is an apparatus and method for forming a wear-resistant metal composition. As a specific example, aluminum oxide powder is added to a magnesium alloy to provide a wear-resistant magnesium composition. The magnesium alloy, as... | 08/12/1986 |
| 4580599 | Valve assembly for relieving pressure on a process structure The invention is a valve assembly designed for relieving pressure on a process structure, such as a reactor vessel or a pipeline. The valve structure consists of two separate pressure relief units, and each unit includes a pressure relief valve that is po... | 04/08/1986 |
| 4573712 | Reducer coupling and positioner tool for the coupling The invention disclosed herein includes a reducer coupling, a positioner tool for connecting the coupling to a conduit section, and a nut for securing the positioner tool to the coupling. The reducer coupling is useful in various operations, such as some ... | 03/04/1986 |
| 4572519 | Packing assembly for use in a plunger bore In plunger-type pumps a packing assembly is installed around the plunger to prevent fluid from leaking past the moving plunger. The packing assembly includes male and female adaptor rings, which are in face-to-face contact with the packing rings, but prov... | 02/25/1986 |
| 4566807 | Apparatus and method for accurately measuring temperatures and temperature differences Disclosed is a differential temperature cell useful for measuring the difference in temperature between two environments. This dT cell comprises a first reservoir which is in fluid communication with a first chamber. Part of one wall of the first chamber ... | 01/28/1986 |
| 4528168 | Brine saturator method of operation An apparatus is disclosed for dissolving salt in an undersaturated brine to bring the brine up to saturation conditions. A salt slurry, specifically sodium chloride, is brought into a holding tank and recycled to keep the solids suspended in the liquid. P... | 07/09/1985 |
| 4527430 | Transducer apparatus for measuring pressure of fluids The transducer device disclosed herein is designed for measuring the pressure of a moving fluid stream. The device includes a body member with a lengthwise bore therein and a pressure orifice in communication with the bore. Positioned in the bore is a one... | 07/09/1985 |
| 4515218 | Casing structures having core members under radial compressive force Casing hardware, such as float collars and shoes, are used in oil well cementing operations. Some of the collars and shoes are constructed of a steel casing with a concrete core inside the casing. The casing structure of the collars and shoes now availabl... | 05/07/1985 |
| 4472325 | Liquid distributor apparatus for a vapor-liquid contact column An apparatus is disclosed for distributing a downflowing liquid uniformly across the packed bed of a vapor-liquid contact column. The apparatus consists of a distributor unit and a parting manifold. The distributor unit includes a plate with upstanding wa... | 09/18/1984 |
| 4462714 | Method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavern The invention disclosed herein is a method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavern. The apparatus includes a deflated balloon with a liquid fill pipe therein. In practice, the cavern is first filled with a liquid... | 07/31/1984 |
| 4453829 | Apparatus for mixing solids and fluids Disclosed herein is an apparatus useful for blending solids with fluids. In a specific application of the blender, sand is mixed with a gel composition to obtain a fluid mixture suitable for stimulation treatments of oil and gas wells. Basic components of... | 06/12/1984 |
| 4448210 | Apparatus and method for controlling the level of a liquid in a tank The invention disclosed herein is a "fail safe" apparatus for controlling the level of a liquid in a tank. The apparatus includes a holding tank for temporarily containing the liquid. There is an access opening along the top surface of the tank so that th... | 05/15/1984 |
| 4448540 | Apparatus for mixing a liquid additive compound with vapor and liquid phases of anhydrous ammonia An apparatus is disclosed which is useful for mixing ammonia, in a vapor-liquid phase, with an additive composition, in a liquid phase, to obtain a homogeneous vapor-liquid mixture of the anhydrous ammonia and the liquid additive compound. The apparatus d... | 05/15/1984 |
| 4439048 | Accelerating rate calorimeter and method of operation The accelerating rate calorimeter disclosed herein is an instrument designed for accurately determining the adiabatic thermal runaway characteristics of reactive chemicals. The mode of operation involves measuring the adiabatic self-heat rate of exothermi... | 03/27/1984 |
| 4432651 | Apparatus for mixing vapor and liquid phases of anhydrous ammonia An apparatus is disclosed which is useful for mixing a vapor phase stream of anhydrous ammonia with a liquid phase stream of anhydrous ammonia, to obtain a homogeneous, vapor-liquid mixture of the anhydrous ammonia. Basic components of the apparatus inclu... | 02/21/1984 |
| 4426278 | Process and apparatus for thermally cracking hydrocarbons A process and apparatus capable of cracking hydrocarbon to produce a reaction product containing a high proportion of ethylene. A hydrocarbon such as naphtha is vaporized and admixed with superheated steam at high temperature in a mixing device. The resul... | 01/17/1984 |
| 4408489 | Apparatus and method for measuring the expansion properties of a cement composition An apparatus is disclosed which is useful for measuring the expansion properties of semi-solid materials which expand to a solid phase, upon curing, such as cement compositions. The apparatus includes a sleeve, preferably cylindrical, which has a vertical... | 10/11/1983 |
| 4320910 | Protective shield for a pipe flange connection A protective shield is disclosed for preventing materials which spray through the gap in an opened flange connection from striking the person who opens the connection. The shield is made up of an inner ring and outer ring, joined only at their ends. When ... | 03/23/1982 |
| 4317486 | Cementing head apparatus and method of operation A cementing head is disclosed, which is particularly designed for injecting an omega-type cementing plug into a well casing. Prior to cementing, the plug is retained in a housing. Located above the plug is a movable plunger, actuated by an operating fluid... | 03/02/1982 |
| 4316708 | Machine for continuously molding solid pellets from a mud composition A machine and method of operation are disclosed for continuously molding solid pellets from a mud composition. In a specific application, the machine is useful for producing an oxidation catalyst in pellet form. The machine includes a rotatable disk havin... | 02/23/1982 |
| 4312406 | Device and method for shifting a port collar sleeve A tool is disclosed for shifting the sleeve of a port collar in a well casing, to open and close the ports in the collar. The basic tool is made up of a housing having a double piston assembly mounted slideably in a transverse bore in the housing. The tra... | 01/26/1982 |
| 4274489 | Retrievable bridge plug and method of setting A bridge plug tool is disclosed, for temporarily plugging off a well casing to perform a downhole operation, such as cementing, or acidizing. The tool includes a mandrel having separate thread segments thereon. During running in of the tool, one thread se... | 06/23/1981 |
