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| Number | Title | Issue Date |
| 4635235 | Seismic exploration system improvement A seismic exploration system where a plurality of geophone locations are employed in one spread along a survey line. The recording procedure uses a roll-along switch for successively connecting a lesser number of recording channels to the geophone locatio... | 01/06/1987 |
| 4576476 | Method and system for accurately measuring speed of a ship relative to a body of water A method and system for measuring relative speed of a ship through a body of water with improved accuracy and simplicity. It employs a free floating buoy and a pair of tracking scopes. The buoy is launched and tracked by the scopes with electronic circuit... | 03/18/1986 |
| 4576041 | Dynamic balancing means for an oil well pumping unit A tension indicator is applied to the belt of a belt driven oil well pumping unit. The pumping unit is driven by an internal combustion engine, and the tension indicator is read for at least one complete cycle of the pumping unit so that the up and down s... | 03/18/1986 |
| 4576231 | Method and apparatus for combating encroachment by in situ treated formations A method and apparatus is applicable to in situ heating of oil shale or tar sand. The heating is by radio frequency that is applied down hole by a central conductor that extends beyond a coaxial shielding conductor to form the antenna or applicator. Encro... | 03/18/1986 |
| 4574002 | Coal gasification combustion chamber structure A combustion chamber for powdered coal and the like having a refractory lined floor with an exit throat at the bottom. The throat is shaped approximately in accordance with the ratios employed in a contraction cone of a wind tunnel to produce a monotonic ... | 03/04/1986 |
| 4557403 | Dry feeder for finely divided solids into high pressure atmosphere A feeder for finely divided solids from atmospheric pressure into a high pressure atmosphere. It has a chute to hold the solids at atmospheric pressure, and a valve with seals to deliver the solids into a loading chamber. There is an arrangement for press... | 12/10/1985 |
| 4547145 | Combination with a high temperature combustion chamber and top burner In the combination of a high temperature combustion chamber which has a burner at the top, there is a radiant energy conduit that is associated with the burner so as to receive radiant energy from the interior of the combustion chamber. The burner introdu... | 10/15/1985 |
| 4542993 | Method of measuring quality of steam in a flow fine A method for determining the quality of steam flowing in a line used for steam injection, e.g. in an oil well. It has a vertical loop in the line, with an orifice in the up-flow side. The pressure, temperature and pressure drop at the orifice are measured... | 09/24/1985 |
| 4539847 | Acoustic method and apparatus for measuring thickness of a coating layer on a substrate A method or system for measuring thickness of a coating layer on a substrate. It employs acoustic energy and involves transmitting a sweep of frequencies covering a predetermined range through the substrate and its coating. The energies reflected back by ... | 09/10/1985 |
| 4533162 | Stabbing box and safety slip for making tubing connections A stabbing box structure that acts as a safety slip. It has a split construction with a clamp to hold it onto the flange of an end connector of a section of tubing which is being supported at the well head by slips. There is a tapered guide interior const... | 08/06/1985 |
| 4533374 | Method for reducing air pollution Method for reducing air pollution in connection with a cryogenic facility to produce nitrogen which facility uses natural gas as fuel for the engines that drive the compressors. Oxygen is a by-product of the cryogenic facility and is usually vented. The b... | 08/06/1985 |
| 4527818 | Coupling for pipe or tubing A coupling especially for connecting pipe or tubing that must not be subjected to torque as connections are made, or afterward. It includes a connector for each of the pipe ends that has a socket to receive the pipe and an extension with a flanged tip. Th... | 07/09/1985 |
| 4524615 | Method and system for measuring the speed of a ship A single scope method or system for accurate ship speed measurement relative to the water through which it is propelled. There is a free floating buoy beside the ship, and a tracking scope is trained on the buoy. At the same time the height above the wate... | 06/25/1985 |
| 4524952 | Safety system for an oil well derrick A safety system for an oil well type derrick that has a crown block and a traveling block and drawworks for raising and lowering the traveling block. It uses electrical sensing means to detect the presence of the traveling block, and it has electronic cir... | 06/25/1985 |
| 4499799 | Internal gripping pipe wrench A tool for insertion into a pipe in order to apply torque by contact with the inside surface of the pipe. It has an axially located socket in a central rotor with a concentric ring around the rotor. The ring has a plurality of toothed gripping arms pivote... | 02/19/1985 |
| 4480688 | Method and bridge plug for sealing off a well A method for sealing off a section of tubing deep in a well comprises (1) permanently anchoring a tapered anchor in the tubing by lowering a beaded chain ring thereover for wedging the tapered anchor to the tubing at the desired position of sealing off of... | 11/06/1984 |
| 4479809 | Apparatus for gasifying coal including a slag trap A slag trap structure is for use where synthesis gas is generated having small particulate slag entrained therewith. It has a high pressure shell with a body of water at the bottom for quenching and removing the slag. There is a coaxial inner wall to dire... | 10/30/1984 |
| 4478278 | Spacer for deep wells A spacer for use in a deep well that is to have a submersible pump situated downhole and with a string of tubing attached to the pump for delivering the pumped fluid. The pump is electrically driven, and power is supplied via an armored cable which parall... | 10/23/1984 |
| 4472171 | Method and system for removing slag Method and/or system for removing liquid slag from a pressurized gasifier. Hot liquid slag is quenched in a quenching medium such as water. The quenched and solidified slag is crushed to a maximum particle size. The crushed slag and quenching medium are a... | 09/18/1984 |
| 4469451 | Method and apparatus for measuring temperature of an earth formation in the presence of a radio frequency electromagnetic field A method and apparatus for measuring the temperature in a subsurface earth formation that is being heated in situ by subjection to a radio frequency electromagnetic field. It includes lowering a maximum registering thermometer into the formation on a non-... | 09/04/1984 |
| 4468613 | Apparatus for detecting corrosion rate A method of measuring the rate of corrosion of a metallic structure that is subjected to a corrosive ambience. It subjects a thin metallic enclosure to the same ambience as the metallic structure is subjected to. The thin enclosure is subjected to the amb... | 08/28/1984 |
| 4467459 | Seismic method improving signal-to-noise ratio A method for improving signal-to-noise ratio in seismic surveying. It involves generating a series of seismic charges at time spaced intervals but at the same location. A single record is made having a time duration sufficient to cover the maximum reflect... | 08/21/1984 |
| 4463804 | Vented non-pressurized, uncontaminated well fluid sampler A method is disclosed for recovering a non-pressurized and uncontaminated fluid sample from deep in a well or the like in an elongated sampler having a sample chamber formed by valves at both ends thereof in a tubular housing for trapping the fluid sample... | 08/07/1984 |
| 4458754 | Method and system for automatically raising product from a heated well A method or system for raising gas and liquid from a well used in in situ heating of a formation. Such heating may be done by radio frequency having an appropriate wave length in the earth e.g. about fifteen meters. The well has a production tube suspende... | 07/10/1984 |
| 4459134 | Outlet structure for a downflow generator Outlet structure of a powdered coal gasification generator. The bottom of the generator has an outlet throat with cylindrical walls that extend beyond the base. And, the walls terminate in an oblique manner with a face shaped to promote flow of slag from ... | 07/10/1984 |
| 4454772 | Method for sampling a fluid from a well A method for sampling a fluid, as a multi-phase chemical product as liquid chemical tracers from a well in a field of wells comprising basically (1) injecting a sample of the liquid from the well through a plurality of valves, as solenoid valves on a plur... | 06/19/1984 |
| 4454773 | Time interval automatic well multi-phase fluid sampler An automatic multi-phase well fluid sampler comprises an inlet solenoid valve means on each of a plurality of sample containers for receiving multi-phase well fluid such as a produced oil-water fluid from one of a plurality of wells, and each of the inlet... | 06/19/1984 |
| 4453756 | Wireline fishing tool A wireline fishing tool for retrieving a fish or object from an inaccesible loction as a broken drill bit deep in a well comprises an elongated rod with two toothed jaws pivotally connected to the lower end thereof and being extendible from a bell shaped ... | 06/12/1984 |
| 4444726 | Quench ring and dip tube assembly for a reactor vessel In the combination of a reactor vessel which includes a quench ring and a dip tube surrounding a bottom outlet, there is an improved quench ring structure. It includes a first annular cooling conduit mounted against the floor of the reactor chamber and su... | 04/24/1984 |
| 4431053 | Well drilling tool A special tool for use in fishing operations during well drilling when a so-called string shot is used. The tool is made up of a hollow sub that may be connected into a string of pipe for lowering in the well. And, it includes a sliding sleeve in the sub.... | 02/14/1984 |
| 4427091 | Fail-safe circuit mechanism for generating a pulse indicating the precise moment of firing of a gas exhausting gun A new circuit is added to the old electrical circuit including two electrodes underwater positioned very close to a gas exhausting gun gaseous exhaust such as an air gun, wherein the exhaust from the firing gas exhausting gun momentarily blows away the co... | 01/24/1984 |
| 4423783 | Method for plugging a well and bridge plug A method for plugging a well comprises (1) extending two sets of dogs on a bridge plug for engaging the sides of the well by releasing an expandable means, and (2) releasing a high pressure fluid for triggering and releasing the expandable means for exten... | 01/03/1984 |
| 4418574 | Magnetic method and apparatus for measuring wall thickness A pulsed magnetic procedure and apparatus for measuring wall thickness. It is especially applicable to pipelines. It includes pulsing a magnetic reluctance coil that is located close to the wall, and measuring the inductance of the pulsed coil. Also the d... | 12/06/1983 |
| 4416246 | Internal combustion engine with fuel injection and AC type high tension spark An improvement for a combination with a fuel injection type internal combustion engine which employs AC type high tension spark that is initiated by the injection valve opening. The improvement includes a gating circuit, and it has means for opening the g... | 11/22/1983 |
| 4414954 | Internal combustion engine ignition system with improvement In the combination of an internal combustion engine which has an electronic ignition system that develops a continuous high-voltage AC type spark signal, there is an improvement which provides for controlling the duration of the spark signals. Such durati... | 11/15/1983 |
| 4413503 | Method of detecting leaks in a large storage tank A method of testing bottoms of large storage tanks. It involves sealing the outer edges of the bottom plate against gas leakage, followed by feeding a halogen gas to the under side of the bottom plate. Then the top of the bottom plate inside the tank is s... | 11/08/1983 |
| 4412315 | Acoustic pulse-echo wall thickness method and apparatus An apparatus and method for making wall thickness measurements. It is particularly applicable to pipeline use. It uses a pulse-echo acoustic arrangement with a single piezoelectric transducer sending and receiving acoustic signals from both faces. It has ... | 10/25/1983 |
| 4411533 | System for measuring temperature of hot gases laden with entrained solids An improvement for a system used to measure temperature of hot gases that are laden with entrained solids. The system involves use of a pyrometer that is mounted outside of a sight hole through the wall of a vessel containing the laden hot gases. And, the... | 10/25/1983 |
| 4409952 | Engine timed ignition system with improvement An engine timed ignition system of the type that combines a short duration high voltage spark with a reduced voltage DC spark sustaining signal. It includes in the system apparatus for starting the DC sustaining signal simultaneously with the high voltage... | 10/18/1983 |
| 4409080 | System for monitoring a cathodically protected structure A corrosion monitoring system for measuring cathodic protection current flow. It is applicable to a buried structure that has cathodic protection applied to it. The monitoring system includes a microcoulometer connected between the buried structure and a ... | 10/11/1983 |
