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| Number | Title | Issue Date |
| 5579840 | Packer running and setting tool There is disclosed a running tool for running and setting and then releasing from a well packer of the type having a main body and a setting sleeve vertically shiftable on the main body to set the packer. The setting tool includes a mandrel carrying a lat... | 12/03/1996 |
| 5542454 | Free flow low energy pipe protector A pipe protector has been designed to provide free flow and low energy. The outside surface has a bilateral asymmetrical pattern when comparing the approximate top half of the pipe protector to the bottom half of the pipe protector. The pattern has raised... | 08/06/1996 |
| 5518320 | Foil bearing A foil journal bearing comprising a housing having an opening to receive the journal of a shaft, and a plurality of foil supports extending longitudinally through the opening. The foil supports having arcuate inner and outer surfaces and are positioned to... | 05/21/1996 |
| 5513703 | Methods and apparatus for perforating and treating production zones and otherwise performing related activities within a well There are disclosed methods and apparatus for perforating and treating zones of a well, as by hydraulic fracturing, stimulating and acidizing, and otherwise performing related activities within a well, wherein a plurality of perforating assemblies contain... | 05/07/1996 |
| 5509537 | Sorting machine ejection system A sorting machine for separating substandard items from a continuous stream of products is disclosed wherein the ejector that removes the detected substandard items includes an ejector finger and an actuator. The ejector finger includes a flexible elongat... | 04/23/1996 |
| 5509483 | Method and apparatus for anchoring a well screen on a perforated mandrel of stainless steel A method and apparatus is described for anchoring a well screen on a stainless steel perforated mandrel without the use of welds in which cup-shaped members, each having a base and an annular wall, are positioned on the mandrel at each end of the screen w... | 04/23/1996 |
| 5508512 | Sorting machine using dual frequency optical detectors A photo-optical detector for use in a multichromatic sorting machine, each detector including at least two separate photodiode materials responsive to a different spectral range and a multipeak optical filter having transmission response characteristics t... | 04/16/1996 |
| 5507467 | Actuator for a drill string internal blowout preventer A remotely operated actuator for a drill string internal blowout preventer is disclosed. It includes an annular cylinder for mounting on the preventer housing to rotate with the housing and the kelly. An annular piston in the cylinder moves a link pivotal... | 04/16/1996 |
| 5505561 | Self-piloting compressible piling A self-piloting compressible piling is provided comprising a plurality of pre-formed pile sections having bores therethrough and adapted to be arranged in end-to-end relation such that the bores are concentrically collinear. An auger plate is positioned b... | 04/09/1996 |
| 5497428 | Self-cooled magnetic structure for loudspeakers A self-cooled electrodynamic loudspeaker including a magnetic structure comprising a pole piece and a magnet arranged around the pole piece, a coil being capable of moving reciprocatingly between the piece and a magnet under the effect of a magnetic flux ... | 03/05/1996 |
| 5494071 | Mounting system for pressure transmitters A mounting plate is disclosed that is adapted to be positioned between a main flow line and at least two differential pressure transmitters, to place the two differential pressure transmitters in fluid communication with a pair of pipeline taps on opposit... | 02/27/1996 |
| 5484028 | Method of drilling with fluid including nut cork and drilling fluid additive The cork or pith portion of various nuts is utilized as a seepage loss reducing additive without increasing, and in some cases reducing, the viscosity of the drilling mud used in drilling boreholes.... | 01/16/1996 |
| 5482424 | Car rack for wheelchairs and the like A rack is disclosed for mounting on the rear of a car for carrying a wheelchair. The wheelchair has a seat supporting framework that includes two parallel horizontal frame members close to the ground. The rack includes a pair of chair support members for ... | 01/09/1996 |
| 5481443 | In-ground directional light fixture A light fixture for directional, illumination is disclosed. A first embodiment contains a gimbal comprised of two opposing retaining collars with arcuately complementary surfaces which mate to the arcuate surface of the lamp/reflector assembly within the ... | 01/02/1996 |
| 5479961 | Method of plugging a heat exchanger tube and plug therefor A plug for sealing the open end of a tube located in an opening in a tube sheet of a heat exchanger is described along with a method of installing the plug. The plug is comprised of a generally cylindrical metallic body of ductile material that is inserte... | 01/02/1996 |
| 5479721 | Method and apparatus for measuring the length (MIU) of the internal taper of an internally upset drill pipe tube A method of measuring the internal taper (Miu) of an internally upset tube is disclosed along with the apparatus for practicing the method. The apparatus includes a first link mechanism that is operated to move a plurality of locating arms outwardly to a ... | 01/02/1996 |
| 5473841 | Device for limiting opening movement of a door There is disclosed a device for limiting the swinging of a door hingedly connected to a second wall adjacent to the first wall. The device includes a bracket adapted to be mounted on the door hinge for swinging about its axis, as well as first and second ... | 12/12/1995 |
| 5471867 | Inventory reconciliation for above ground storage tanks A system for inventory reconciliation and leak detection of particular utility in liquid storage tanks such as the terminal facilities that are used for the storage and distribution of gasoline. The system has the ability to monitor the inventory of sever... | 12/05/1995 |
| 5469408 | High resolution geophone A geophone is disclosed that has a cylindrical housing closed at one end by a bottom and the other end by a top. A magnet assembly of a rare earth magnet with pole pieces at each end of the magnet is centrally mounted in the housing providing an annular s... | 11/21/1995 |
| 5467890 | Container for collecting leaking hydrocarbons There is disclosed a container for collecting hydrocarbons which might leak from a source, such as a loading or unloading line of and oil storage tank, and which, for environmental purposes, should not be permitted to spill out of the container into the o... | 11/21/1995 |
| 5467824 | Apparatus for and a method of severing multiple casing strings using explosives A method of and apparatus for severing multiple concentric casing strings in an abandoned oil or gas well allowing the upper portion of the casing strings to be removed comprising positioning a container holding a sealed cylinder full of air at atmospheri... | 11/21/1995 |
| 5467669 | Cutting tool insert A hard metal insert for a drill bit is disclosed having an outer body and an encapsulated inner body. The particle size and the chemical composition of the outer body and the inner body are such that the outer body is harder and more wear resistant than t... | 11/21/1995 |
| 5467282 | GPS and satellite navigation system A satellite-based navigation system providing improved accuracy and reliability over wide geographical areas, including remote regions, is disclosed. Ranging-type signals transmitted through two or more commercial geostationary telecommunication satellite... | 11/14/1995 |
| 5465786 | Subsurface tubing safety valve There is disclosed a subsurface safety valve which is adapted to be installed in a tubing string within a well bore and of a type which remains open only so long as a controlled condition is maintained. Also disclosed are several embodiments of a mechanis... | 11/14/1995 |
| 5465759 | Variable diameter pipe protector A pipe protector is disclosed comprising a tubular rubber member with an inner diameter sized to the approximate outer diameter of a pipe. The protector is a variable diameter pipe protector that prevents slipping on undersized pipes, but can also be used... | 11/14/1995 |
| 5464624 | Method for loading a delivery system for a chemical repellant composition A method is provided for loading a delivery system for a chemical repellant composition. An aqueous mixture comprising one part water-soluble isothiuronium salt and two parts weak base is prepared. Capsaicin is added to the aqueous mixture before it is lo... | 11/07/1995 |
| 5463883 | Textile treating machine There is disclosed a textile treating machine having an outer shell in which textile treating liquids may be contained, and a perforated drum for receiving textiles to be treated and having a shaft extending through an opening in one end of the shell. A b... | 11/07/1995 |
| 5461906 | Apparatus for confirming the presence of a leak in a liquid storage tank Apparatus for confirming the presence or absence of leaks in a liquid storage container, particularly in partially filled underground storage tanks, subjected to partial vacuum for the purpose of testing the tank for the presence of a leak in the area abo... | 10/31/1995 |
| 5461195 | Filled telecommunications cable having temperature stable mutual capacitance A cable having a thixotropic filling compound therein, the filling compound being a gel composition including a water absorbent hydrocarbon polymer with pendent anionic groups. The composition eliminates shorts caused by moisture contact with such wires. ... | 10/24/1995 |
| 5454605 | Tool joint connection with interlocking wedge threads A tubular connection is shown having wedge threads, the individual threads preferably interlocking by having wider crest dimensions than respective root dimensions, but with the stab flanks and load flanks generally angling in the same direction with resp... | 10/03/1995 |
| 5454237 | Continuous batch type washing machine There are disclosed two embodiments of a top transfer type continuous batch washing machine comprising an intermediate outer housing and an additional outer housing at each end thereof, with each outer housing having one or more bath sections, and a conti... | 10/03/1995 |
| 5451177 | Tube toy and method A plurality of tubes having flanged ends are assembled in end to end fashion by clamping the flanges between first and second portions of connector blocks, the portions of the connector blocks being provided with channels formed in the opposed surfaces th... | 09/19/1995 |
| 5450914 | Fluid powered stepping motor for rotating a downhole assembly relative to a supporting pipe string A fluid powered stepping motor is disclosed for connecting to a pipe string to rotate a tool relative to the pipe string by raising and lowering the pressure in the pipe string. The motor includes a housing, the lower end of which is connected to the tool... | 09/19/1995 |
| 5447196 | Hydraulic jar There is disclosed a double-acting hydraulic jar having upper and lower detent pressure chambers having upper and lower restrictions, respectively, formed on the inner diameter of its outer tubular member and through which upper and lower detent means car... | 09/05/1995 |
| 5443581 | Clamp assembly for clamp hub connectors and a method of installing the same A clamp assembly is for connecting the two hubs of a hub connector with each hub in sealing engagement with a seal ring, the hubs having flat opposing surfaces with ring grooves and tapered annular surfaces on the opposite side of the hubs from the ring g... | 08/22/1995 |
| 5438837 | Apparatus for storing and delivering liquid cryogen and apparatus and process for filling same Disclosed is an apparatus for storing and delivering a liquid cryogen. The apparatus is a dewar having a rotating liquid cryogen intake, a rotating gas supply vent, and a rotating capacitance gauge. Also disclosed is a system and a process employing the s... | 08/08/1995 |
| 5430087 | Carbon black pair with different particle size and improved rubber stock A carbon black system for manufacturing rubber comprises a pair of carbon blacks having the same structure, a fumed silica and a silane coupler. One of the pairs of carbon blacks has an Iodine Adsorption No. of less than 115 and the other pair of carbon b... | 07/04/1995 |
| 5425430 | Jar enhancer There is disclosed a tool for enhancing the impact delivered to an object stuck in a well bore by means of a jar having a first tubular member connected to the object and a second tubular member having a hammer arranged to deliver an upward blow to an anv... | 06/20/1995 |
| 5423979 | Liquid decontamination apparatus In a multi-pass system for purifying oil or other liquids, an improved apparatus and method for mixing air with the contaminated liquid for separation after a phase change from liquid to gas. The contaminated liquid is drawn from a reservoir by a pump, fi... | 06/13/1995 |
| 5421276 | Method of disposing of absorbent material impregnated with waste Method for disposing of absorbent material impregnated with waste. The capillary retention capability of the absorbent material impregnated with waste is destroyed, thereby releasing the waste retained in the material. The absorbent material and released ... | 06/06/1995 |
