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| Number | Title | Issue Date |
| 4421689 | Derivatives of 1,5-dimethylbicyclo [3,2,1] octane, the preparation of these compounds and their use as perfume compound Derivative compounds of 1,5-dimethylbicyclo [3,2,1] octane of the general formula ##STR1## and perfume compositions containing these derivatives, wherein X represents a C.dbd.O group, a ##STR2## group or a ##STR3## group, in which... | 12/20/1983 |
| 4352608 | Remotely positioned intake apparatus for a pneumatic conveying system and method of using same A new and improved remotely positioned intake system for use with a pneumatic conveying system and in particular for feeding boll cotton to a cotton ginning operation. The system includes a frame assembly that supports a downwardly extending intake tube o... | 10/05/1982 |
| 4345897 | Recirculating system for gas-fired furnace Combustion gas recirculating system for a gas-fired furnace of the type which includes a plenum with a cold air inlet duct and a warm air exhaust duct, a combustion chamber where gas is burned to form hot combustion gases, a heat exchanger in the plenum f... | 08/24/1982 |
| 4345368 | Parallel-type heating cable and method of making same A method and apparatus for parallel-type heating cables. In accordance with the present invention a heating core element is formed by connecting two essentially parallel bus wires with a plurality of electrically conductive splices to a centrally disposed... | 08/24/1982 |
| 4333129 | Flashlight with battery separator A physical and electrical separation of the batteries in a conventional flashlight is achieved by placing a separator plate between the batteries. The separator plate, of a non-conductive material, has a first and second side, each with a conductive coati... | 06/01/1982 |
| 4331867 | Photoconductive instrument The invention is directed to an instrument control apparatus capable of regulating the flow of electric current by detecting relative movement between an indicator and a control zone. A light source is positioned close to the control zone so that illumina... | 05/25/1982 |
| 4329168 | Amine treatment for passivating sponge iron Sponge iron may be passivated against reoxidation by air and water vapor by contacting it with an amine containing from about one to about twelve carbon atoms. The amine contact may be accomplished in the vapor phase by adding the amine to a cooling gas w... | 05/11/1982 |
| 4327805 | Method for producing viscous hydrocarbons A method for recovering viscous hydrocarbons and synthetic fuels from a subterranean formation by drilling a well bore through the formation and completing the well by cementing a casing means in the upper part of the pay zone. The well is completed as an... | 05/04/1982 |
| 4327651 | Method and apparatus for protecting a floor safe from water damage A method and apparatus for protecting a floor safe from water damage including an outer shell member mounted in an annular area formed between the case or housing of the floor safe and the foundation in which the floor safe is mounted; a protective enclos... | 05/04/1982 |
| 4326951 | Electrostatic mineral concentrator An apparatus for electrostatically concentrating mineral particles includes a pair of oppositely charged collector electrodes spaced apart from each other and oriented so that a flow path is formed between them where material containing mineral particles ... | 04/27/1982 |
| 4326602 | Portable stabbing board A portable stabbing board adapted to be attached to a rig for supporting a worker while stabbing joints of tubular members together during running operations including a frame member mountable with the rig, attachment members with the frame member for rem... | 04/27/1982 |
| 4325459 | Muffler diffuser An improved muffler diffuser adapted to be used with a muffler having a diffuser element mountable within the muffler adjacent the inlet end, with the diffuser element having a body portion mountable with the muffler and a diffuser portion disposed within... | 04/20/1982 |
| 4323256 | Front packer seal for ram blowout preventer An improved seal for a blowout preventer ram which can be moved into and out of engagement with a length of pipe and includes intersecting recesses formed in the outer surfaces of the ram body for accommodating seal for forming a pressure-tight seal aroun... | 04/06/1982 |
| 4323131 | Removable anti-wear insert A removable anti-wear insert adapted to be mounted in the bore of a tool body, the insert being removable after wear with minimal damage to the tool body. The removable insert has a bore therein mounting an extractor sleeve, the sleeve having a threaded p... | 04/06/1982 |
| 4320654 | System for detecting cracks in the heat-insulating lining of a container for liquefied gas A problem with tanks for storing liquefied gases is the development of cracks in the heat-insulating lining of the tank. Methods have been proposed for the detection of cracks occurring in the lining comprising passing a purging gas, for example nitrogen,... | 03/23/1982 |
| 4320579 | Calipering tool A calipering tool for use in a pipe and having a body and feeler means mounted with the body for engaging the surfaces of the pipe being calipered and with feelers moving in response to variations in the surface of the pipe, the improvement residing in me... | 03/23/1982 |
| 4320555 | Convertible vacuum cleaner A vacuum cleaner which can alternately be used as a wet vacuum or a dry dust-free vacuum includes a suction head adapted to engage a surface to be vacuumed and a vacuum chamber which includes an inlet and outlet adapted to hold a quantity of liquid and so... | 03/23/1982 |
| 4320101 | Removal of sulfur from waste gas streams Preferential sulfur dioxide absorption solvents may be buffered with suitable agents, such as alkanolaminium carboxylates, to substantially retard or eliminate the tendency of such solvents to degrade or accumulate non-regenerable salts, particularly sulf... | 03/16/1982 |
| 4319639 | Well safety system method Subsurface apparatus and method for using same in a hydrocarbon producing well to enable retrieval of a full opening subsurface safety valve mounted in the well tubing without disturbing the major portion of the well tubing located below the safety valve.... | 03/16/1982 |
| 4318523 | Removable utility support device for ladder A utility support device for use in conjunction with hollow-rung ladders is provided which derives support from studs inserted into the hollow rungs of the ladder. The device is easily mounted to either side of the ladder for ease of access and convenienc... | 03/09/1982 |
| 4318394 | Solar energy concentrator A solar energy concentrator is provided which includes a flexible reflective surface to focus solar flux on absorber tubes. The surface is mounted above a plurality of partially evacuated chambers. As the relative position between the sun and the concentr... | 03/09/1982 |
| 4318384 | Fuel vaporizer A fuel vaporizing apparatus adapted for supplying fuel to an internal combustion engine. The apparatus comprises a housing with an enclosed vaporizing cavity shaped to provide a relatively thin flow path and a relatively large surface area for heat transf... | 03/09/1982 |
| 4315263 | Navigational systems using phase encoded angular coordinates This invention generally relates to navigation systems which seek to position in real time with appropriate accuracy one or more mobile platforms in reference to a known system of coordinates by the emission of signals into a propagation medium and proces... | 02/09/1982 |
| 4312635 | Method and apparatus for fluid analysis A fluid is circulated in a loop at a predetermined pressure and temperature. A second immiscible fluid is added to the loop and maintained in a portion of the loop so that a portion of the loop is free of the second immiscible fluid. A chemical tracer is ... | 01/26/1982 |
| 4312404 | Rotating blowout preventer Improved rotating blowout preventer including a stationary housing, a bearing housing and a bearing means assembly and seal assembly for mounting an internally located, rotating sleeve for rotating, sealable movement within the bearing housing. The bearin... | 01/26/1982 |
| 4310277 | Apparatus for transferring cargo between relatively movable bodies An apparatus for transferring cargo between first and second bodies which are movable relative to each other where a hoist for raising and lowering cargo through a hoist line is mounted on one of the bodies includes a linkage for connecting the two bodies... | 01/12/1982 |
| 4310051 | Well safety valve apparatus Subsurface apparatus and method for using same in a hydrocarbon producing well to enable retrieval of a full opening subsurface safety valve mounted in the well tubing without disturbing the major portion of the well tubing located below the safety valve.... | 01/12/1982 |
| 4310048 | Well safety system method and apparatus Subsurface apparatus and method for using same in a hydrocarbon producing well to enable retrieval of a full opening subsurface safety valve mounted in the well tubing without disturbing the major portion of the well tubing located below the safety valve.... | 01/12/1982 |
| 4309869 | Method and apparatus for forming a non-tensioned multi-conduit line A method and apparatus for forming a non-tensioned multi-conduit line from a plurality of conduits and a central core as the plurality of conduits and central core are pulled longitudinally along the length thereof including the securing of conduits in a ... | 01/12/1982 |
| 4307189 | Method for the quantitative determination of terminal deoxynucleotidyl transferase in biological samples Terminal Deoxynucleotidyl Transferase (TdT) may now be quantified in a biological sample without interference from other DNA polymerases normally found therein by utilizing labeled deoxynucleoside triphosphates and/or labeled single stranded oligodeoxynuc... | 12/22/1981 |
| 4306742 | Pipe hanger A pipe hanger for supporting and sealing a tubular conduit in a producing well. The initial application of the tubular conduit weight to the hanger automatically actuates the seal and both sets of pipe gripping members. The upper set of pipe gripping slip... | 12/22/1981 |
| 4305686 | Offshore drilling platform protection device An offshore drilling platform protection device for use on an offshore oil well drilling vessel including a drilling platform supportable on a plurality of extendable legs wherein each leg is moved by a rack gear assembly, which rack gear assembly include... | 12/15/1981 |
| 4305672 | Mixing device for viscous liquids An improved mixing device for viscous liquids includes an elongated body with an opening extending axially through the entire length of the body. An elongated diffuser is located in the opening with pathways therein for forming a circuitous path for mixin... | 12/15/1981 |
| 4305595 | Composite seal A composite seal is adapted to fit in a groove formed in the outer surface of a first body and project outwardly to engage a second body spaced apart from the first body and form a fluid-tight seal between the two bodies. The seal includes an elongated ra... | 12/15/1981 |
| 4305565 | Variable position ram lock for blowout preventers A new and improved ram lock and blowout preventer are provided for locking a blowout preventer ram in any of a number of variable, adjustable sealing positions in a bore in the preventer. A ram carrier is mounted in a housing to move the ram to and from t... | 12/15/1981 |
| 4305428 | Surge absorber The present invention relates to a surge absorber that may be easily custom fabricated to a particular flow line application. The surge absorber prevents "water hammer" by providing an enlarged compressible fluid chamber that is separated from the flow li... | 12/15/1981 |
| 4304311 | Drill string stabilizer having easily removed hard surface inserts A drilling tool apparatus having easily released hard surface wear inserts for use in earth boring operations of the fixed blade stabilizer type is disclosed. Tungsten carbide inserts are preferably used on the wear surfaces of a fixed blade stabilizer an... | 12/08/1981 |
| 4301841 | Multipurpose container A multipurpose container for storing, transporting, collecting and disposing of fluids such as motor oil and the like. The multipurpose hollow container includes a top wall, a bottom wall and four connected generally rectangular side walls enclosing the i... | 11/24/1981 |
| 4299253 | Pulsation dampener A pulsation dampener providing high attenuation in a narrow quiet band or frequency. The pulsation dampener is tuned to provide a reflected wave 180° out of phase in the narrow band to cancel the undesired pulsation. A silicone polymer contained by a dia... | 11/10/1981 |
| 4299033 | Calipering tool A calipering tool for use in a pipe and having a body and feeler means mounted with the body for engaging the surfaces of the pipe being calipered and with feelers moving in response to variations in the surface of the pipe, improvements residing in pairs... | 11/10/1981 |
