Patents Assigned to Shaw Industries
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Patent number: 5439031Abstract: Heat-shrinkable cap comprising a heat-shrinkable tube sealed at one end by heat recovering that end of tube over a dimensionally stable, solid plug. The tube and plug are mutually weldable under heat, or are bonded together, thereby providing an air and water-tight seal at the sealed end. The open end of the cap may be internally coated with adhesive to provide an air and water-tight seal over an object such as a cable-end when the cap is heat recovered over said object.Type: GrantFiled: November 12, 1993Date of Patent: August 8, 1995Assignee: Shaw Industries Ltd.Inventors: Robert E. Steele, Peter Jackson, Marcus P. W. Heydrich
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Patent number: 5411777Abstract: A heat shrinkable wrap-around sleeve comprises a heat shrinkable sheet with a heat stable strip welded on one end. The free end of the heat stable strip is overlapped on the outer side of the opposite end of the sheet and welded thereto by heating applied directly on the outer side. This allows the material of the strip to differ in its properties from the material of the sheet, so that the nature of welded closure can be tailored to particular applications. It also allows manufacture of sleeves having hold-down adhesives applied on them to be conducted with greater ease and economy. The sleeve can be manufactured using continuous welding, for example by heated wedge welding.Type: GrantFiled: December 10, 1993Date of Patent: May 2, 1995Assignee: Shaw Industries, Ltd.Inventors: Robert E. Steele, Michael A. Romano, Peter Jackson
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Patent number: 5371972Abstract: Surface anomalies on pipe are removed preparatory to corrosion coating. The removal is conducted by brushing with wire brush elements or Comax brush elements which may rotate about axes parallel to the pipe axis or substantially radially off the pipe. Both kinds of brush elements may be used in combination. Before subjecting the pipe to brushing, the surface is particulate blasted to remove ferric oxide and better expose surface anomolies. After wire brushing, the surface is again particulate blasted to provide an anchor pattern of indentations promoting adhesion of the coating.Type: GrantFiled: February 7, 1994Date of Patent: December 13, 1994Assignee: Shaw Industries Ltd.Inventors: Stephen E. McConkey, Guntrum N. Franzky
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Patent number: 5358537Abstract: There is disclosed a process and a composition for dyeing polymeric fibers which have limited dye sites and/or difficult to penetrate chemical structures. Briefly stated, the process comprises the steps of contacting polymeric fibers with a dye composition comprising a disperse dye and a swelling agent. The fibers in contact with said dye composition are then preferably heated to a temperature and for a time sufficient to effect dispersion of a portion of said dye into said polymeric fibers. Subsequently, the fibers are treated to remove residual dye composition.Type: GrantFiled: September 17, 1991Date of Patent: October 25, 1994Assignee: Shaw Industries, Inc.Inventors: David R. Kelly, Richard Castle, Christopher Bryant
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Patent number: 5311652Abstract: Surface anomalies on pipe are removed preparatory to corrosion coating. The removal is conducted by brushing with wire brush elements or COMAX brush elements which may rotate about axes parallel to the pipe axis or substantially radially off the pipe. Both kinds of brush elements may be used in combination. Before subjecting the pipe to brushing, the surface is particulate blasted to remove ferric oxide and better expose surface anomolies. After wire brushing, the surface is again particulate blasted to provide an anchor pattern of indentations promoting adhesion of the coating.Type: GrantFiled: May 26, 1992Date of Patent: May 17, 1994Assignee: Shaw Industries Ltd.Inventors: Stephen E. McConkey, Guntrum N. Franzky
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Patent number: 5302428Abstract: A multiple layer wraparound sleeve having a heat shrinkable backing layer and at least one functional layer has the functional layer as a discrete sheet which is connected to one end of the backing layer, and is of at least sufficient length that, when the sleeve is wrapped around the pipe or other substrate at least twice, the functional layer sheet wraps around the substrate first with its ends overlapping and the backing layer wraps around the functional layer sheet with its ends overlapping. This allows wrappings of reduced thickness to be employed without problems of voids occurring between the functional layer and the substrate.Type: GrantFiled: September 29, 1992Date of Patent: April 12, 1994Assignee: Shaw Industries Ltd.Inventors: Robert E. Steele, Alfredo Andrenacci
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Patent number: 5300336Abstract: The invention provides a composite protective coating applied to a steel pipe, the coating comprising an epoxy resin primer bonded to the outer surface of the pipe, a polyolefin outer sheath, and an interlayer consisting of a mixture of epoxy resin and polyolefin. The composition of the mixture forming the interlayer is graded throughout its thickness, being substantially all epoxy resin adjacent to the primer coating and substantially all polyolefin adjacent to the sheath.Type: GrantFiled: October 13, 1992Date of Patent: April 5, 1994Assignee: Shaw Industries Ltd.Inventors: Dennis Wong, Jiri Holub, Joseph G. Mordarski
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Patent number: 5261995Abstract: The invention relates to a method and apparatus for wrapping pipe with a cementatious material such as concrete. The material is conveyed to the pipe as a continuous strip provided with notches along one edge and complementary notches are formed at the other edge of the strip as the strip is wrapped spirally onto the pipe. The continuous strip is formed in a hopper having a number of sections of successively reduced widths and containing rollers by which successive superimposed layer portions of the strip are formed with reinforcing mesh embedded between successive layer portions.Type: GrantFiled: December 28, 1992Date of Patent: November 16, 1993Assignee: Shaw Industries Ltd.Inventor: Ronald W. Golden
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Patent number: 5178902Abstract: Two methods are provided for applying and forming a protective composite coating on a metallic substrate. In the first method, the substrate is heated to a temperature between about 175.degree. C. and 275.degree. C. and a powdered coating of epoxy resin between 100 and 400 microns thick is applied to the outer surface of the heated substrate. A premixed powder coating of epoxy resin and polyolefin is applied directly onto the epoxy resin coating, forming an interlayer of interspersed domains of epoxy and polyolefin between about 100 and 400 microns in thickness. On to this, powdered polyolefin is sprayed to produce a polyolefin sheath coating for the metallic substrate between 200 and 1000 microns in thickness. In the second embodiment of the method, the interlayer is formed by spraying pure epoxy resin powder and polyolefin powder from separate sources simultaneously onto the substrate. By these methods, a metallic substrate coated with a composite epoxy/polyolefin protective coating is produced.Type: GrantFiled: August 7, 1991Date of Patent: January 12, 1993Assignee: Shaw Industries Ltd.Inventors: Dennis Wong, Jiri Holub, Joseph G. Mordarski
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Patent number: 5175032Abstract: A longitudinally heat shrinkable closure sheet has a hold-down adhesive portion adjacent each longitudinal end for application on the exposed end portions a heat shrinkable wrap-around sleeve applied around a pipe or other article to be covered. Heat is applied to the closure sheet in order to weld the adhesive free portion of the underside of the closure sheet to the end portions of wrap-around sleeve. The initial shrinkage of the closure sheet between the hold-down adhesive portions draws it tightly into contact with the upper side of the end portions. Shearing forces are applied between the closure sheet and the end portions firstly as the closure sheet contracts relative to the end portions, and secondly, as the sleeve shrinks, develops hoop stress and stretches the closure sheet, and a high strength fusion bond is achieved between the closure sheet and sleeve.Type: GrantFiled: May 2, 1991Date of Patent: December 29, 1992Assignee: Shaw Industries Ltd.Inventors: Robert E. Steele, Michael A. Romano, Dilip K. Tailor
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Patent number: 5134594Abstract: An improved spring spider for geophones is disclosed that has the desired ratio of spurious resonant frequency to the natural frequency of the geophone and can absorb the sharp lateral forces imposed on the geophone during destructive testing and hand usage.Type: GrantFiled: July 3, 1991Date of Patent: July 28, 1992Assignee: Shaw Industries, Ltd.Inventor: Daniel M. Woo
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Patent number: 5134000Abstract: A heat shrinkable wrap-around sleeve comprises a heat shrinkable sheet with a heat stable strip welded on one end. The free end of the heat stable strip is overlapped on the outer side of the opposite end of the sheet and welded thereto by heating applied directly on the outer side. This allows a good quality welded connection to be formed without requiring the use of hold-down adhesives. The sleeve can be manufactured using induction welding or more preferably by heated wedged welding.Type: GrantFiled: May 7, 1990Date of Patent: July 28, 1992Assignee: Shaw Industries Ltd.Inventors: James L. Smythe, D. Brian W. Yawney, John H. Oliver, Peter Jackson
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Patent number: 5119345Abstract: A geophone is disclosed that has a cylindrical housing closed at one end by a bottom and at the other end by a top. A magnet assembly and a coil-mass are located in the housing. Springs support the coil-mass for axial movement relative to the magnet assembly along the longitudinal axis of the housing. A pair of coil terminals are mounted in the upper end of the coil-mass adjacent the top of the housing. A pair of eyelets extend through the top of the housing and outside geophone terminals are attached to and extend through the eyelets into the housing. A pair of pigtails connect the geophone terminals to the coil terminals.Type: GrantFiled: May 3, 1991Date of Patent: June 2, 1992Assignee: Shaw Industries Ltd.Inventors: Daniel M. Woo, James C. Woodall, Jr.
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Patent number: 5104152Abstract: A welded pipe joint for pipes which are internally lined for carrying corrosive fluids is formed by an internally lined insert extending into the belled end sections of the pipes to be joined and engaging the belled end sections with a mechanical interference fit. The insert, which is provided with a heat shield to retard the transfer of heat during a subsequent welding operation, is held in coaxial alignment with the pipes while the adjacent ends of the pipes are brought together. The adjacent ends of the pipes are finally welded to complete the joint.Type: GrantFiled: November 28, 1989Date of Patent: April 14, 1992Assignee: Shaw IndustriesInventor: Frederick S. Galfant
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Patent number: 5052657Abstract: A kelly valve includes a ball valve structure (10) having a ball valve member (40) with a central bore (42) therethrough mounted within a valve chamber (38) for rotation between open and closed positions. A fluid pressure equalizing opening or port (60) is provided in the quadrant of the ball valve member (40) exposed to the upstream flow passage (20) in closed position (FIG. 2) and exposed to the valve chamber (38) in open position (FIG. 1) thereby making the ball valve member (40) easy to rotate manually even at high downstream fluid pressures.Type: GrantFiled: November 2, 1990Date of Patent: October 1, 1991Assignee: Shaw Industries, Ltd.Inventor: Thomas E. Winship
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Patent number: 5040622Abstract: An intermediate weight member (10) having a variable cross-section or bending moment of inertia as a function of member length is disclosed. At one end of the member (10) a slip and elevator section (14) is provided. A partially grooved section (16) of a diameter greater than that of the slip and elevator section extends between the slip and elevator section (24) and the other end of the member (10). The partially grooved section (16) includes two variable depth grooved sections (18, 20) separated by an ungrooved section (22). The ungrooved section (22) includes hardbanding rings (26, 28). The spiral grooves (30A, 30B, 30C) of variable depth grooved section (18, 20) vary in depth as a function of member length such that the bending moment of inertia varies as a function of length from the slip and elevator section (14) to the lower end of the member (10).Type: GrantFiled: May 16, 1990Date of Patent: August 20, 1991Assignee: Shaw Industries Ltd.Inventors: Thomas E. Winship, Edmond I. Bailey
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Patent number: 5026451Abstract: A method and apparatus are described, for extruding a thermoplastic protective jacket onto a steel pipe. The pipe is first coated with a layer of epoxy which is partly cured, and then is conveyed through a cross-head extruder where a layer of copolymer or other suitable adhesive is applied. The outermost thermoplastic jacket may be co-extruded with the adhesive layer or laid down onto the pipe as it passes through a second cross-head extruder. Radial pressure is applied to a band of surface about the jacketed pipe which has been cooled to a stage such that the outer surface of the thermoplastic is hardened while the inner portion thereof remains above the softening temperature, thereby achieving good adhesion of the jacket to the pipe, without dislocating or blemishing the thermoplastic protective jacket.Type: GrantFiled: June 8, 1989Date of Patent: June 25, 1991Assignee: Shaw Industries Ltd.Inventors: Michael A. Trzecieski, Clifford R. Ferguson
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Patent number: 5001801Abstract: A self-propelled pipe cleaning machine as disclosed for use in removal of deteriorated coatings, such as coal tar or tape, from pipelines and providing a degree of surface preparation suitable for recoating. The machine comprises a travelling frame for motion along the pipe and an oscillating carriage bearing a plurality of counter-rotating cylindrical cutting tools which are urged toward the pipe surface by constant-force pneumatic cylinders. Variation in the pressure of cutters against the pipe surface during oscillation of the cutter head is avoided by counterbalancing of the pivotally-mounted cutters and their associated drive means.Type: GrantFiled: May 1, 1989Date of Patent: March 26, 1991Assignee: Shaw Industries Ltd.Inventors: Harold F. Jarvis, Carlos Sinforoso
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Patent number: 4917632Abstract: An electrical connector is disclosed having an elongated conductor housing of non-conducting material with two electrical connector conductors embedded in and extending lengthwise of the housing. Each connector conductor has a socket at one end and a pin at the other. A sleeve of elastic material positioned on the housing so that a portion of the housing extends beyond the sleeve to serve as a male plug and a portion of the sleeve extends beyond the other end of the housing to combine with the housing to form a female plug. The sleeve has an integral elongated boot in the side through which a geophone cable extends. The conductors of the geophone cable are connected to the conductors embedded in the housing of the connector.Type: GrantFiled: May 15, 1989Date of Patent: April 17, 1990Assignee: Shaw Industries Ltd.Inventor: J. David Smith
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Patent number: 4785854Abstract: In a concrete-wrapped pipe having an inner water-impermeable resinous coating, the concrete wrapping is formed with a continuous inner portion covering the resinous coating and a helically slotted outer portion, the helical slot extending at least to the depth of a mesh reinforcement embedded in the concrete. The structure is characterized by the fact that the inner portion of the concrete wrapping is formed with one or more helically extending zones of reduced compressive strength, radially aligned with the helical slot or slots in the outer portion. The helical configuration breaks the continuityof the concrete wrapping in the longitudinal direction of the pipe and, even with pipe of relatively large diameter, enables the wrapping to accommodate limited bending of the pipe.Type: GrantFiled: February 23, 1988Date of Patent: November 22, 1988Assignee: Shaw Industries Ltd.Inventors: Harold F. Jarvis, Frederick S. Gelfant