Patents Assigned to Scapa Group PLC
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Patent number: 5857561Abstract: A tobacco conveyor belt having a regular nonwoven mesh structure. The belt may incorporate an ultra-violet sensative material.Type: GrantFiled: September 9, 1996Date of Patent: January 12, 1999Assignee: Scapa Group PLCInventors: David Hardman, Ian Sayers
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Patent number: 5849395Abstract: A method of making a polymer coated industrial fabric is disclosed. The method comprises urging a polymer film coated release sheet towards a textile substrate, curing the polymer and removing the release sheet. The polymer coating is reticular, comprising a network of two dimensional pores thus providing permeability.Type: GrantFiled: July 25, 1996Date of Patent: December 15, 1998Assignee: Scapa Group PLCInventors: Craig Valentine, Ian C. Sayers
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Patent number: 5826458Abstract: A moisture detection meter (10) has a sensing head having a single chamber (11) with an open top. A dielectric resonator member (14) is provided in the chamber. The sensing head also has a field generator (17) to generate an oscillating electric fluid in the chamber. The resonator member (14) and the field interact to produce at least one field component which is directed out of the open top of the chamber to interact with stock passing over the sensing head. A detection device is also provided to detect the frequency of resonance of the field compact after interaction with the stock and an indicator device is provided so as to give an output indicative of the moisture content of the stock.Type: GrantFiled: April 3, 1997Date of Patent: October 27, 1998Assignee: Scapa Group PLCInventor: Cosmo Little
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Patent number: 5820959Abstract: A corrugator fabric comprising a first basecloth having a first staple fiber layer secured to the lower face thereof and a second staple fiber layer secured to the upper face thereof, a second basecloth having a lower face secured to the second staple fiber layer and optionally the first basecloth, a third staple fiber layer secured to the upper face of the second basecloth, a jointing body to form a seam for said fabric and a seam flap including at least one basecloth covering said jointing body.Type: GrantFiled: January 28, 1997Date of Patent: October 13, 1998Assignee: Scapa Group PLCInventor: Ronald Whittaker
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Patent number: 5794758Abstract: A roller apparatus for a corrugator machine comprises a tubular mantle secured to a central core. Circumferential grooves are provided in the surface of the roller. The grooves provided at the centre of the roller are inclined at an angle ".alpha." which is less than the angle of inclination ".alpha." of the grooves provided at the outer regions of the roller.Type: GrantFiled: May 24, 1996Date of Patent: August 18, 1998Assignee: Scapa Group PLCInventors: Lynn Alan Bakker, Chris Alan Ledeker, Ernest Lee Bailey, John Ray Young
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Patent number: 5785724Abstract: A filtering apparatus has a bag or sleeve connected to a profiled resilient band (10, 20). The band is operative to sealing engage an aperture (13, 16) in a further body (16, 27). The profiled band (10, 20) has a one piece construction.Type: GrantFiled: November 12, 1996Date of Patent: July 28, 1998Assignee: Scapa Group PLCInventor: Joe Johnson
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Patent number: 5609931Abstract: A method of weaving a papermakers fabric having weft loops in which the loop forming weft yarn is woven as two picks in a common shed in each respective fabric layer as it exists in the loom. The weft yarn is wrapped about a core yarn at one edge of the fabric as it exists in the loom between successive weft insertions in said common shed.Type: GrantFiled: February 22, 1995Date of Patent: March 11, 1997Assignee: Scapa Group PLCInventor: Jean-Luc L. Delavallade
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Patent number: 5585430Abstract: A pintle wire comprises a polymer material containing a lubricant material of schistose nature. The polymer material comprises polyamide, polyester, copolyester, polyetheretherketone or polyphenylene sulphide. The schistose lubricant comprise graphite, molybdenum sulphide, cobalt sulphide, clay or silicate.Type: GrantFiled: September 6, 1995Date of Patent: December 17, 1996Assignee: Scapa Group PLCInventors: Sanjay Patel, Robert L. Crook
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Patent number: 5571223Abstract: A roller apparatus (23) for use in the drying section of an apparatus for producing corrugated board comprises a tubular body operative to be received over a metal roller. The wall of the tubular body comprises an inner layer (24) of relatively hard polyurethane and an outer layer (25) of a deformable polyurethane. A spiral winding of yarn (26) is wrapped around the inner layer (24).Type: GrantFiled: June 22, 1993Date of Patent: November 5, 1996Assignee: Scapa Group PLCInventor: Walter Dudovicz
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Patent number: 5514438Abstract: A papermakers fabric comprises a felt made up of a base cloth and a batt of fibres needled to the base cloth. The papermakers fabric is woven from machine direction yarns and cross machine direction yarns. The machine direction yarns form a series of loops at each of the fabric ends, the two sets of loops being interdigitable and capable of union by a pintle wire. The machine direction yarns comprise a core of cabled monofilaments surrounded by a sheath of multifilaments.Type: GrantFiled: October 25, 1994Date of Patent: May 7, 1996Assignee: Scapa Group PLCInventor: Robert L. Crook, Jr.
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Patent number: 5508095Abstract: Papermachine clothing made from a sheet of partially fused polymeric particles and having a reinforcing structure embedded wholly within the sheet.Type: GrantFiled: November 2, 1994Date of Patent: April 16, 1996Assignee: Scapa Group PLCInventors: Andrew Allum, Ian C. Sayers, Thomas Saunders
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Patent number: 5419017Abstract: A temporary seaming bridge (62) for connecting two belt ends (26,27) during seaming comprises a bridge portion (63) with a plurality of pegs (34,35) provided at each end. The pegs (34,35) are complementary with apertures (28,29) provided in the belt ends (26,27) such that the pegs (34) at one end of the bridge engage the apertures (28) in one belt end (26) and the pegs (35) of the other end of the bridge engage the apertures (29) in the other belt end (27).Type: GrantFiled: May 26, 1992Date of Patent: May 30, 1995Assignee: Scapa Group PLCInventors: Robert D. Buchanan, Ian C. Sayers
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Patent number: 5405685Abstract: Papermachine clothing for use in the forming, pressing or drying sections of a papermachine including fibres of polyethylene naphthalate polymer which provides excellent hydrolysis and heat resistance as well as good mechanical properties such as tensile strength, tenacity, elongation and flexibility.Type: GrantFiled: May 18, 1994Date of Patent: April 11, 1995Assignee: Scapa Group PLCInventor: Sanjay R. Patel
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Patent number: 5391427Abstract: A filter belt (10) comprises an edge track (13) made from rubber, but having an olefin content which softens under heat to facilitate welding to a fabric. The rubber is welded to one edge of a length of fabric (12). The opposite edge of the fabric (12) is secured to a filter cloth (11).Type: GrantFiled: August 25, 1992Date of Patent: February 21, 1995Assignee: Scapa Group plcInventor: Shyam Kumaran
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Patent number: 5364692Abstract: A stuffed spiral link fabric, providing a supporting surface for transporting a web includes a plurality of synthetic spiral coil members connected together serially by elongated hinge members extending through intermeshed portions of adjacent intermeshing spiral coil members to form a spiral link fabric and a plurality of elongated shaped synthetic stuffer yarns extending through central portions of the spiral coil members to form a stuffed spiral link fabric. The stuffed spiral link fabric is heat set to form a fabric in which each spiral coil member has a cross sectional shape having arcuate ends joined by substantially straight portions and a central portion of each spiral coil member is substantially filled with a stuffer yarn which engages and is clamped to each intermeshed portion adjacent thereto, reducing the air and moisture permeability of the fabric and increasing the fabric stability. The stuffer yarn is modified in shape and trapped in place in the spiral fabric by the heat setting step.Type: GrantFiled: December 28, 1993Date of Patent: November 15, 1994Assignee: Scapa Group, PLCInventors: David Bowen, Jr., Gerald L. Smith
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Patent number: 5358750Abstract: An industrial fabric such as a fusing or laminating belt and a method for the production thereof wherein an endless base fabric (21) is coated with successive layers (24, 25,26) of a synthetic plastics coating material, some at least of the layers including silicate bodies therein. The total coating includes at least one layer (25a) applied by lick coating and at least one layer (25, 26) applied by dip coating.Type: GrantFiled: August 13, 1993Date of Patent: October 25, 1994Assignee: Scapa Group PLCInventor: Frank Brookfield
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Patent number: 5342486Abstract: An extended nip press belt having a longitudinal running direction for the press-section of a papermaking machine includes an apertured membrane having two opposite faces and an impermeable coating layer at at least one face thereof. The material of the coating layer of layers engaging the apertures in the membrane extend at least to the plane of the face of the membrane opposite the one face. The membrane may include reinforcing yarns in the longitudinal running direction of the belt.Type: GrantFiled: November 17, 1992Date of Patent: August 30, 1994Assignee: Scapa Group PLCInventors: John Jeffery, Leslie Y. Kaniuka, Ian C. Sayers
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Patent number: 5330604Abstract: A method and apparatus is disclosed for manufacturing papermakers or like fabrics wherein preformed apertured fabric bands are joined together in spaced edge-to-edge disposition in a manner to provide substantial uniformity of construction throughout the fabric width. The invention proposed supporting the bands (11, 12) in spaced parallel disposition on a pinned roller (26) wherein the distribution and configuration of the pins (34) matches the apertures in the bands and creating an infill band in the region between adjacent preformed bands (11, 12) by feeding thermoplastic matrix material to the surface of the pinned roller in said region, causing said matrix material to flow into interstices between the pins and to bond with the material of the preformed bands. Reinforcing yarns (13) will be provided in the region between adjacent preformed bands and extending in a direction parallel to the bands and will be embodied within the matrix material of the joined structure.Type: GrantFiled: April 1, 1992Date of Patent: July 19, 1994Assignee: Scapa Group PLCInventors: Andrew Allum, John Jeffery, Ian C. Sayers, Michael D. Spence
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Patent number: 5245939Abstract: A fabric for use in supporting a cellulose pulp sheet during passage through a Flakt dryer which is of asymmetric double weave construction, the fabric being folded into V-shaped configuration and there being essentially uncrimped, essentially inextensible load bearing yarns positioned between the weft yarns of the respective fabric layers and extending in the longitudinal direction of the fabric, adjacent ones of the load bearing yarns being separated by warp yarns of the less densely woven inner layer which weave also with the weft yarns of the outer layer. The more densely woven outer layer protects the load bearing yarns from wear and from the adverse effects of heat.Type: GrantFiled: June 30, 1992Date of Patent: September 21, 1993Assignee: Scapa Group plcInventor: Jean A. M. Rouhling
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Patent number: 5217415Abstract: A papermakers fabric, and particularly a corrugator fabric, has a flat-woven, multilayer structure and is brought into endless form by a joint or seam arranged obliquely relative to the running direction of the fabric and at the roller side thereof. The angular disposition of the seam reduces noise levels, sheet marking and web breakage.Type: GrantFiled: August 29, 1991Date of Patent: June 8, 1993Assignee: Scapa Group plcInventors: Michel Wasylezuck, Jean Rouhling