Patents Represented by Law Firm Hubbard, Thurman, Turner & Tucker
  • Patent number: 4944347
    Abstract: An apparatus is provided for direct high velocity, consistent, uniform preparation of completion/workover systems for use in subterranean wells. The system has a screw type conveyor extending through a mixing housing which is in direct communication with a pump. Passageways are provided through the housing for the screw type rotatable conveyor and through the mixing chamber housing in axial alignment with openings in the pump such that the diametric area between the interior of the mixing housing and the exterior of the conveyor housing provides sufficient transport velocity for the carrier fluid and the solid particulate matter from the point of mixing in the annulus, through the annulus and to the inlet of the pump.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: July 31, 1990
    Assignee: Baker Hughes Incorporated
    Inventors: Bennett M. Richard, Michael H. Johnson
  • Patent number: 4941981
    Abstract: The present invention provides a modified liquid phase drilling fluid having desirable properties of shale swelling inhibition, lubrication, and high temperature performance. The fluid does not rely on the incorporation of inorganic salts or high molecular weight water soluble polymers for control of shale swelling or shale disintegration and exhibits performance characteristics, approaching those of oil base drilling fluids, without the objectionable properties of hydrocarbon oils or its potential hazardous impact on the environment.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: July 17, 1990
    Assignee: Baker Hughes Incorporated
    Inventors: Alphonse C. Perricone, Dennis K. Clapper, Dorothy P. Enright
  • Patent number: 4941534
    Abstract: An inflatable packer is mounted on the bottom end of a well casing by valve housing defining an annular chamber which is in communication at its lower end with the inflatable packer. A radial port is provided in the inner wall of the annular chamber for communicating with the bore of the casing and, during run-in, such radial port is closed by a sleeve valve shearably secured in the annular chamber. Application of pressured inflation fluid to the sleeve valve causes it to shift to a position permitting inflation fluid to flow through the annular chamber to the inflatable packer. Intermediate the first sleeve valve and the inflatable packer is a second sleeve valve which is shearably secured in a normally open position with respect to fluid flow through the annular chamber.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: July 17, 1990
    Assignee: Baker Hughes Incorporated
    Inventor: Vel Berzin
  • Patent number: 4942527
    Abstract: A computing apparatus for an improved information system that manages. The apparatus has computing machinery which includes a computer and an input/output device for two way communication between the computer and an operator.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: July 17, 1990
    Inventor: Billy G. Schumacher
  • Patent number: 4940028
    Abstract: A pull rope type starting apparatus for small internal combustion engines comprises a rope reel having a hub portion adapted to be rotatably mounted on a shaft driven by the piston(s) of the engine. A pair of axially spaced, radial flanges project from the hub to define an annular, relatively narrow rope-receiving cavity on the reel. A pull rope has a looped inner end portion anchored within a generally U-shaped channel formed on the outer side of one of the flanges. The rope extends from its clamped inner end loop around the reel hub to form a half hitch configuration and then passes through the clamped loop and a first aperture formed in the flange to which the inner rope end is clamped to lie intermediate the two radial flanges of the reel for winding within the annular reel cavity.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: July 10, 1990
    Assignee: White Consolidated Industries, Inc.
    Inventor: Lloyd H. Tuggle
  • Patent number: 4936387
    Abstract: A hydraulic packer with seals and slips is actuated by first and second cylinders which move in a first direction to actuate the seals or the slips into setting position with primary and secondary pistons carried within the cylindrical members and tandemly arranged for movement in a second direction to activate the other of the seals and slips. The pistons are selectively secured against longitudinal movement relative to the housing and to each other and the primary piston is released from the housing before release of the secondary piston.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: June 26, 1990
    Assignee: Baker Hughes Incorporated
    Inventor: Richard P. Rubbo
  • Patent number: 4937018
    Abstract: A rotor-type carburetor is provided with a specially designed spray ring which centrifugally discharges atomized fuel droplets in two different sizes for mixture with engine-ingested air traversing the interior of the carburetor and driving its rotor section. Larger droplets are forced outwardly through an annular series of discharge openings formed in the ring, while smaller droplets are formed by the passage of fuel over an annular spray edge extending around the bottom of a radially inwardly bent lower end portion of the ring. This simultaneous formation and discharge of two series of differently sized atomized fuel droplets improves the overall performance of the engine and reduces the level of its emission pollutants. The spray ring also functions to automatically vary, in a predetermined manner, the flow rate relationship between the differently sized fuel droplets as a function of engine speed to further enhance engine performance.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: June 26, 1990
    Assignee: Kwik Products International
    Inventor: Rudolf Diener
  • Patent number: 4934460
    Abstract: An apparatus for effecting chemical treatment of a subterranean well bore comprises vertically spaced, inflatable packing elements which are run into the well on a fluid conduit, such as continuous coiled tubing, or the like. The apparatus permits circulation while being run into the well and, when positioned, effects the expansion of the two inflatable elements by pressured fluid introduced through the supporting fluid conduit. The applied pressure is trapped within the inflatable elements by axial movement of an inner body relative to an outer body, which effects the opening of fluid communication between the central fluid conduit and the well bore portion between the inflated packing elements, permitting testing of the sealing effectiveness of the packing elements, and the application of a treatment fluid. The same movement, accompanied by an increase in fluid pressure effects the opening of a fluid path to the well bore above the uppermost packing element.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: June 19, 1990
    Assignee: Baker Hughes Incorporated
    Inventor: Martin P. Coronado
  • Patent number: 4935851
    Abstract: An illuminated shoelace including an elongated section of flexible material having first and second ends, and first and second light-emitting elements respectively secured to such first and second ends. The illuminated shoelace further includes a battery holder with an integral electrical switch secured to the elongated section of flexible material, and conductive elements coupled between the battery holder and the light-emitting elements.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: June 19, 1990
    Assignees: John D. Little, Lorianne Little
    Inventor: John Wood
  • Patent number: 4934459
    Abstract: The present invention provides an apparatus for anchoring of equipment within the interior bore of a section of a subterranean well conduit, and particularly for insertion of such equipment. The apparatus comprises a cylindrical housing and a conically tapered surface around the exterior of the housing which is radially larger at its upper end and tapered to a radially smaller lower end. A seal body is provided which is carried exteriorly around the housing and has its interior tapered end reverse to that of the conically tapered surface around the housing and which is selectively longitudinally movable relative to the housing from a first, unset position on the conduit section to a second, set position on the conduit section and radially expandable during the movement relative to the housing. Anchoring means are carried exteriorly around the body for securing the apparatus to the conduit section against upward and downward movement of the apparatus.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: June 19, 1990
    Assignee: Baker Hughes Incorporated
    Inventors: John L. Baugh, Sidney K. Smith, Jr.
  • Patent number: 4934866
    Abstract: An underground storage tank installation apparatus and method for installing the same. The apparatus includes a fiberglass vault into which one or more underground storage tanks are secured and buried in a suitable excavation. Structural support members are formed within the walls of the fiberglass vault to provide adequate strength for the walls of the fiberglass vault so that the chances of cave-ins are minimized. Internal and external observation wells are provided, with automatic leak detectors, so that any leakage either inside or outside the fiberglass vault is automatically detectable. The preferred method for installing the fiberglass vault is to excavate a pit of predetermined dimensions and pour a concrete base in the bottom thereof. The sides of the pit are lined with sheetrock panels and a liquified fiberglass mixture is sprayed on to the panels and concrete slab, with vertical support members being secured to the sheetrock panels between subsequent layers of the fiberglass coating.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: June 19, 1990
    Assignee: Secondary Containment, Inc.
    Inventor: Donald G. Gage
  • Patent number: 4931677
    Abstract: An electromagnetic linear drive including a stator which constitutes a path of movement for a vehicle. The linear drive is equipped with current conductors, and is divided into a plurality of stator elements of equal length. A movable portion which constitutes a vehicle is preferably equipped with permanent magnets cooperating with the stator to provide the drive. The stator is divided into a number of motor elements, each motor element including a minimum number of stator elements as well as an energy supply unit adapted to be switched on and off individually by sensors disposed along the path of movement. All motor elements are designed for the same maximum performance, and motor elements of different lengths are provided. The length of each motor element is determined by the local need for maximum performance per unit length which exists at the location of the respective motor element in accordance with a predetermined speed characteristic at that point along the path of movement.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: June 5, 1990
    Inventors: Gotz Heidelberg, Andreas Grundl, Peter Rosner
  • Patent number: 4928772
    Abstract: A method and apparatus are provided for introduction into a subterranean well on a continuous length of remedial tubing which is concentrically insertable through production tubing previously positioned within the well, the production tubing carrying at least one ported member for selective transmission of fluid between the exterior and the interior thereof, with each of the ported members receiving means which are movable in each of opening and closing directions for opening and closing the respective ported member. The apparatus comprises a cylindrical tubular housing having a fluid passageway therethrough communicable with the interior of the remedial tubing for transmission of fluid from within the remedial tubing, through the apparatus, and within an auxiliary apparatus carryable within said well by said remedial tubing, and positionable in said well in proximity to one of said ported members.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: May 29, 1990
    Assignee: Baker Hughes Incorporated
    Inventor: Mark E. Hopmann
  • Patent number: 4928768
    Abstract: A locking mechanism for anchoring a tubing string to a hollow bore sump packer located at a position in a subterranean well. The locking mechanism is attachable to the end of a tubing string and incorporates radially shiftable locking members which are engagable with an internal, downwardly facing shoulder defined within the hollow bore of the sum packer. The radially shiftable locking elements are moved from a retracted to a locking position by reciprocating movements of a mandrel carried by the tubing string. A supporting surface on the mandrel controls the position of the radially shiftable locking elements. The position of the supporting surface relative to the radially shiftable locking elements is controlled by a J-pin secured to the sleeve carrying the radially shiftable locking elements and a cooperating J-slot carried by the mandrel.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: May 29, 1990
    Assignee: Baker Hughes Incorporated
    Inventor: Elmer R. Peterson
  • Patent number: 4926509
    Abstract: Disclosed is a bidet apparatus. The apparatus includes a spray pipe pivotally mounted to a toilet. The spray pipe is movable between a retracted position and an in-use position. A spray nozzle is connected to the spray pipe. A crank arm extending outwardly of the spray pipe is positioned to pivot the spray pipe between the retracted and the extended positions. A valve having at least one inlet and a single outlet is mounted to the toilet. The valve is operated between a valve open position and a valve closed position by a single lever handle. A conduit is connected between the outlet of the valve and the spray pipe and a link is connected between the lever handle and the crank arm such that movement of the lever handle to the valve open position pivots the spray pipe to the in-use position.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: May 22, 1990
    Inventor: Joyce H. Bass
  • Patent number: 4926840
    Abstract: To inhibit internal heat exchanger corrosion, the products of combustion from a standing pilot flame in an induced draft, fuel-fired furnace are prevented from migrating through the heat exchanger during idle periods of the furnace by flowing the products of combustion upwardly through a small vent tube into the outlet section of the draft inducer fan, and then into an external exhaust stack, thereby bypassing the heat exchanger. During operation of the draft inducer fan a negative pressure is maintained within the vent tube, to prevent combustion gas outflow therethrough which might otherwise snuff out the pilot flame, by a venturi structure positioned within the draft inducer fan outlet section adjacent its juncture with the vent tube.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: May 22, 1990
    Assignee: Rheem Manufacturing Company
    Inventors: Timothy J. Shellenberger, William T. Harrigill
  • Patent number: 4926939
    Abstract: A hanger for suspending a liner in a cased subterranean well comprises an elongated tubular body having ramp elements formed on its exterior and a plurality of peripherally spaced slip elements secured to a sleeve piston surrounding the lower end of the tubular body. Seals provided intermediate the piston and the tubular body define a first fluid pressure chamber. A clean fluid is supplied to the first pressure chamber through an axially extending passageway of restricted diameter provided in the wall of the tubular body and having an opening at its bottom end communicating with the first pressure chamber and at its top end communicating with a second pressure chamber defined by a tubing carried run-in tool detachably engaged with the liner hanger.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: May 22, 1990
    Assignee: Baker Hughes Incorporated
    Inventor: J. Lindley Baugh
  • Patent number: 4925575
    Abstract: A system for separating phases of a liquid stream, comprising a plurality of members each member having an inlet and an outlet such that the outlet of one member is connected to the inlet of another with members being horizontally or vertically stacked in relation to each other.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: May 15, 1990
    Inventor: Gerard A. Just
  • Patent number: D307933
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: May 15, 1990
    Inventor: Kenneth Baer
  • Patent number: D308802
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: June 26, 1990
    Inventor: Gary S. Ward