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| Number | Title | Issue Date |
| 5297617 | Fan assembly with heat sink Heat transfer from the inside of a fan duct to the air is very good because the air in this region has a high velocity and is turbulent due to the rotation of the fan blades. Devices mounted on the outside of the fan duct can thus be cooled effectively. T... | 03/29/1994 |
| 5297618 | Apparatus for removing a heatsink from an electronic module or package A heatsink is provided which can be removably secured in a heat transfer relationship to an electronic module or package by an epoxy type adhesive. A screw is provided through one end of the heatsink directly over an edge of the module sealing cap. To rem... | 03/29/1994 |
| 5297619 | Centrifugal heat pipe vapor absorption heat pump A heat pipe is disclosed for use in a vapor-absorption heat pump to provide high efficiency heat transfer between first and second fluids in contact with opposing first and second faces of the heat pipe. Although preferably disk-shaped and adapted for rot... | 03/29/1994 |
| 5297620 | Method and apparatus for transporting, utilizing and recovering heat utilizing decomposing and synthesizing reactions of methanol A method for transportation, utilization and recovery of heat comprises the wide-area installation of methanol and reformed gas supply pipelines, combustion of the methanol and reformed gas to obtain high-temperature heat, subjecting reformed gas supplied... | 03/29/1994 |
| 5297621 | Method and apparatus for maintaining electrically operating device temperatures A method and apparatus for maintaining an electrically operating device at a desired temperature during burn-in testing of the device includes immersing the device in a bath of an inert liquid having a boiling point less than the desired case temperature.... | 03/29/1994 |
| 5297622 | Method for cooling of dust separated from the flue gases from a PFBC plant A method is provided for cooling of particulate material from a combustion plant, especially intended for cooling of fine-grained dust which has been separated from the flue gases from a PFBC power plant, and in which the material is transported pneumatic... | 03/29/1994 |
| 5297623 | Heat exchange apparatus and method for preparing the apparatus A heat exchange apparatus comprising a heat transfer member; and at least one projecting blade which is arranged to confront the heat transfer member, and which carries out relative motion with respect to the heat transfer member; wherein a distance betwe... | 03/29/1994 |
| 5297624 | Header for a flat tube liquefier A header for a flat tube liquefier is composed of first and second components. The first component is provided in a tube bottom with receiving slots for the flat tubes and the second component complements the header structure, with the two components foll... | 03/29/1994 |
| 5297625 | Biochemically enhanced oil recovery and oil treatment This invention relates to the preparation of new, modified organisms, through challenge growth processes, that are viable in the extreme temperature, pressure and pH conditions and salt concentrations of an oil reservoir and that are suitable for use in m... | 03/29/1994 |
| 5297626 | Oil recovery process A process to recover oil is provided wherein an oil containing subterranean formation is heated by conductive heat transfer from heat injectors operating at temperatures above 900° C. The high temperature levels of this process result in high recoveries ... | 03/29/1994 |
| 5297627 | Method for reduced water coning in a horizontal well during heavy oil production A method to reduce water coning in viscous oil formations during primary oil production wherein a horizontal wellbore is heated by circulating steam therein thereby heating a radial area near the wellbore. Near wellbore heating alters a pressure profile i... | 03/29/1994 |
| 5297628 | Simultaneous matrix acidizing using acids with different densities A method for simultaneously matrix acidizing two spaced apart zones of a carbonate containing formation. Initially, a lower density acid is injected into an upper zone of said formation hereby forming wormholes which make this zone more permeable. Simulta... | 03/29/1994 |
| 5297629 | Drill stem testing with tubing conveyed perforation A well test string includes an annulus pressure responsive tester valve and a tubing conveyed perforating gun including a tubing pressure actuated time delay firing mechanism. A compression set packer is disposed in the test string between the tester valv... | 03/29/1994 |
| 5297630 | Downhole milling tool A cutting tool (22) includes a plurality of pivoted blades (36) for swinging outwardly to an expanded radial position for first cutting the walls of multiple casing strings (10, 11), and then removing a predetermined length of the casing strings (10, 11) ... | 03/29/1994 |
| 5297631 | Method and apparatus for downhole oil well production stimulation A method and apparatus for stimulating the production zone of an oil well having a high pressure gas gun and a coil tubing conduit to deliver cleaning, stimulating, and cooling liquid to the zone while firing the gun. The coil tubing conduit has discharge... | 03/29/1994 |
| 5297632 | Method and apparatus for production of subsea hydrocarbon formations A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible c... | 03/29/1994 |
| 5297633 | Inflatable packer assembly An inflatable packer assembly for use in a subterranean well bore to isolate an interval of the well bore and/or adjacent subterranean formation for treatment. The assembly comprises a hanger assembly, a fluid piston assembly and at least one inflatable p... | 03/29/1994 |
| 5297634 | Method and apparatus for reducing wellbore-fluid pressure differential forces on a settable wellbore tool in a flowing well An apparatus is provided for use in a wellbore for reducing the effects of pressure differential forces which act on settable wellbore tools suspended therein. The apparatus operates to provide a bypass fluid flow path through the settable wellbore tool f... | 03/29/1994 |
| 5297635 | Combined alarm and back-flow prevention arrangement for fire suppression sprinkler system A backflow prevention and flow detection arrangement is provided by a first and a second check valve with a passageway provided between the check valves. The second check valve may be an alarm valve with an alarm which is sounded when the alarm valve is o... | 03/29/1994 |
| 5297636 | Fire extinguishing system for cookstoves and ranges A fire extinguishing system for a residential cookstove or range includes a fire extinguisher mounted above a hood in a cabinet positioned over the cookstove or range. The fire extinguisher is connected by flexible hoses and/or adjustable pipes to a pair ... | 03/29/1994 |
| 5297637 | Agricultural disc blade An agricultural tool including a disc blade incorporating hard wear resistant inserts for attachment to an axial member of an agricultural tool for rotation through the soil. The disc blade includes parallel spaced flat round front and rear surfaces havin... | 03/29/1994 |
| 5297638 | Drivepipe guide and installation method for wells Offshore well slots are recovered by cutting off old drive or surface pipe below the mud line to form a stub end. A new drivepipe is installed with a guide and shield device disposed on the scarfed lower end or "mule shoe" of the new drivepipe. The guide ... | 03/29/1994 |
| 5297639 | Method and apparatus for using multiple jets A method of erosive cutting of a hard material such as rock utilizes two spaced clusters of jets for high-pressure discharge of fluid in the course of their movement along the same longitudinal path over the hard material. One of the jet clusters has a fi... | 03/29/1994 |
| 5297640 | Drill collar for use in horizontal drilling An improved drilling drill collar particularly for use in drilling horizontal wells employing a fluid driven drill, the drill collar being in the form of an elongated intermediate portion of at least substantially triangular cross-sectional configuration ... | 03/29/1994 |
| 5297641 | Drilling deviation control tool An elongated body, capable of serving as a length of drill string, has two major portions with each portion providing an end for connection to the drill string with drilling fluid channels extending from end to end. One portion extends into the other and ... | 03/29/1994 |
| 5297642 | Apparatus for storing drill rods An apparatus for storing drill rods, comprising two drill rod cartridges each comprising a rotating rotor provided with finger boards, guides for guiding the drill rods into gaps formed by the finger boards circumferentially around the axis of the rotor. ... | 03/29/1994 |
| 5297643 | Cold headed center vacuum drill bit A drill bit for drilling holes in a work surface including a hard wear-resistant insert and a metal body including a top working surface of an irregular surface configuration having a slot for retaining the hard wear-resistant insert. The body having a me... | 03/29/1994 |
| 5297644 | Vehicle with tiltable propulsion units A transverse axis tubular hub (24) couples each propulsion unit (4) to the vehicle body (2), and supplies signals representative of the forces that it transmits. A tilt motor (22) of the propulsion unit bears on the hub to tilt the propulsion units about ... | 03/29/1994 |
| 5297645 | Industrial lift truck An industrial lift truck having a body which includes a battery container cover, spaced straddle legs projecting from the body and a lift mast which moves along the straddle legs. The lift mast is moved along the straddle legs by a mechanism operated by a... | 03/29/1994 |
| 5297646 | Control system for optimizing operation of vehicle performance/safety enhancing systems such as 4WS, 4WD active suspensions, and the like Vehicular acceleration is sensed and used to set and/or modify at least two of a plurality of control sensitivity values in a manner which increases one with respect to the other and thus avoids the situation wherein a limited amount of servo power is was... | 03/29/1994 |
| 5297647 | Variable assist power steering gear with hydraulic reaction controls The invention comprises a steering gear for an automotive vehicle having a rotary valve mechanism that controls pressure distribution to a fluid motor that establishes a power assist during steering maneuvers, pressure reaction pistons being provided to e... | 03/29/1994 |
| 5297648 | Compound steering mechanism A steering mechanism for a tractor having a transverse axle with pivotally movable steering wheels and a laterally shiftable chassis is disclosed wherein a first tie rod interconnects the steering arms of the opposing steerable wheels to couple the moveme... | 03/29/1994 |
| 5297649 | Apparatus for controlling output from engine on crawler type tractor At the time of starting movement as well as at the time when a crawler type tractor, e.g., a bulldozer for performing a dosing operation and a ripping operation is held in a three-point grounding state, an output from an engine (10) is automatically reduc... | 03/29/1994 |
| 5297650 | Electrically-driven motor car with an externally-operated parking device A motor car includes a body, an electrical supply, an electric drive unit, a steering system, a parking brake and a control unit inside the body for causing the drive unit to be activated by the electrical supply. The motor car also includes a control uni... | 03/29/1994 |
| 5297651 | Safety load transfer device and system A load transfer device and system having double safety cables permitting users to move freely and safely along elevated surfaces comprising a plurality of elongated T-shaped support brackets each having a body portion for anchoring to a support surface an... | 03/29/1994 |
| 5297652 | Mobile transcending scaffold apparatus A mobile apparatus featuring framing for dual scaffolding and numerous other features that is equipped for highway towing to the job site, where it may be erected and towed with supporting equipment and supply trailers in a train-like fashion, with scaffo... | 03/29/1994 |
| 5297653 | Pickup truck mounted lift apparatus A stable lift apparatus for a pickup truck includes a base which is supported on the sidewalls of the cargo compartment. Each of a pair of scissor assemblies has two lifting arms having the front ends pivotably attached to one of the base and a raisable p... | 03/29/1994 |
| 5297654 | Helicopter-carried nacelle and its use process for the replacement of an overhead cable portion The invention permits the replacement of a used section of an overhead cable (1) by a new section without depositing said cable on the ground. A nacelle or pod mainly includes a drum (20) onto which is wound the new section to be deposited and on which wi... | 03/29/1994 |
| 5297655 | Collapsible sawhorse A collapsible sawhorse unit that, when unfolded and combined with a replaceable crosspiece, produces a sturdy and economical sawhorse. The unit includes the two A-shaped end pieces, of two legs each, that fold toward each other with the legs of each end p... | 03/29/1994 |
| 5297656 | Fixed position tree stand having adjustable footrest A fixed position tree stand having extendable vertical members for adjusting the height of the seat and extendable and retractable diagonal support members for adjusting the angle of the footrest. The invention includes an inverted U-shaped tubular frame havin... | 03/29/1994 |
