Patents by Inventor Keith FitzPatrick
Keith FitzPatrick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20120097353Abstract: A substrate for an endless belt in a papermaking machine comprising a plurality of preformed layers coated or impregnated with a polymeric or rubber material. Each preformed layer may be a textile material. At least one layer contains a matrix of preformed reinforcing components. The individual layers are first coated with a polymer resin or rubber material and then combined/stacked and cured/bonded to form the substrate of the belt.Type: ApplicationFiled: January 3, 2012Publication date: April 26, 2012Applicant: Albany International Corp.Inventor: Keith FITZPATRICK
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Patent number: 8080137Abstract: A belt for use in a long nip press having an arcuate pressure shoe. The belt has at least one layer having a polymer resin coating on at least one surface thereof. The resin coating has a plurality of grooves arranged therein and wherein a number of the grooves has a length less than a length of the arcuate pressure shoe to reduce ingoing nip spray.Type: GrantFiled: May 27, 2008Date of Patent: December 20, 2011Assignee: Albany International Corp.Inventors: Keith Fitzpatrick, Bo-Christer Aberg, Michael G. Moriarty, Paul Turner
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Publication number: 20090029051Abstract: A belt for use in a long nip press having an arcuate pressure shoe. The belt has at least one layer having a polymer resin coating on at least one surface thereof. The resin coating has a plurality of grooves arranged therein and wherein a number of the grooves has a length less than a length of the arcuate pressure shoe to reduce ingoing nip spray.Type: ApplicationFiled: May 27, 2008Publication date: January 29, 2009Inventors: Keith Fitzpatrick, Bo-Christer Aberg, Michael G. Moriarty, Paul Turner
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Patent number: 7387711Abstract: A belt for use in a long nip press having an arcuate pressure shoe. The belt has at least one layer having a polymer resin coating on at least one surface thereof. The resin coating has a plurality of grooves arranged therein and wherein a number of the grooves has a length less than a length of the arcuate pressure shoe to reduce ingoing nip spray.Type: GrantFiled: November 15, 2004Date of Patent: June 17, 2008Assignee: Albany International Corp.Inventors: Keith Fitzpatrick, Bo-Christer Aberg, Michael G. Moriarty
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Patent number: 7384516Abstract: A belt for use in a papermaking process, such as in a long nip press having a cylindrical press roller and an arcuate pressure shoe which define a nip. The belt has a nip load zone which passes through the nip during an operation. The belt comprises a substrate having a coating on at least one surface thereof. The substrate is in the form of an endless loop and has a longitudinal direction. The coating has a plurality of grooves running in a center portion of the nip load zone, in which the number of grooves have at least one of a depth, width, cross-sectional shape, or spacing which is different from that of the others so as to vary the void volume in a desired manner.Type: GrantFiled: November 1, 2004Date of Patent: June 10, 2008Assignee: Albany International Corp.Inventors: Keith Fitzpatrick, Thomas Krauthauf
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Patent number: 7303656Abstract: A laminated substrate or base structure comprising separately formed layers with warp knitted or stitch bonded yarns joining the layers together wherein at least one of the layers is a reinforcing layer and at least one of the layers is for inhibiting resin flow through the substrate. A method for forming the substrate or base structure into a coated papermaker's process belt product is also described.Type: GrantFiled: July 2, 2003Date of Patent: December 4, 2007Assignee: Albany International Corp.Inventor: Keith FitzPatrick
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Patent number: 7156956Abstract: A family of paper industry process belts (“PIPB's”) having a range of properties for different applications in the paper industry. The PIPB can be a laminate comprising a grooved press belt and a porous membrane embedded therein and used as a substitute dewatering structure heretofore provided by press fabric(s).Type: GrantFiled: August 11, 2003Date of Patent: January 2, 2007Assignee: Albany International Corp.Inventor: Keith FitzPatrick
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Publication number: 20050126733Abstract: A belt for use in a long nip press having an arcuate pressure shoe. The belt has at least one layer having a polymer resin coating on at least one surface thereof. The resin coating has a plurality of grooves arranged therein and wherein a number of the grooves has a length less than a length of the arcuate pressure shoe to reduce ingoing nip spray.Type: ApplicationFiled: November 15, 2004Publication date: June 16, 2005Inventors: Keith Fitzpatrick, Bo-Christer Aberg, Michael Moriarty
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Publication number: 20050115100Abstract: A belt for use in a papermaking process, such as in a long nip press having a cylindrical press roller and an arcuate pressure shoe which define a nip. The belt has a nip load zone which passes through the nip during an operation. The belt comprises a substrate having a coating on at least one surface thereof. The substrate is in the form of an endless loop and has a longitudinal direction. The coating has a plurality of grooves running in a center portion of the nip load zone, in which the number of grooves have at least one of a depth, width, cross-sectional shape, or spacing which is different from that of the others so as to vary the void volume in a desired manner.Type: ApplicationFiled: November 1, 2004Publication date: June 2, 2005Inventors: Keith Fitzpatrick, Thomas Krauthauf
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Publication number: 20050086833Abstract: A laminated substrate or base structure comprising separately formed layers with warp knitted or stitch bonded yarns joining the layers together wherein at least one of the layers is a reinforcing layer and at least one of the layers is for inhibiting resin flow through the substrate. A method for forming the substrate or base structure into a coated papermaker's process belt product is also described.Type: ApplicationFiled: July 2, 2003Publication date: April 28, 2005Inventor: Keith FitzPatrick
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Publication number: 20050037681Abstract: A family of paper industry process belts (“PIPB's”) having a range of properties for different applications in the paper industry. The PIPB can be a laminate comprising a grooved press belt and a porous membrane embedded therein and used as a substitute dewatering structure heretofore provided by press fabric(s).Type: ApplicationFiled: August 11, 2003Publication date: February 17, 2005Inventor: Keith FitzPatrick
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Publication number: 20050003724Abstract: A substrate for an endless belt in a papermaking machine comprising a plurality of preformed layers coated or impregnated with a polymeric or rubber material. Each preformed layer may be a textile material. At least one layer contains a matrix of preformed reinforcing components. The individual layers are first coated with a polymer resin or rubber material and then combined/stacked and cured/bonded to form the substrate of the belt.Type: ApplicationFiled: July 2, 2003Publication date: January 6, 2005Inventor: Keith FitzPatrick
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Patent number: 6465074Abstract: A resin-impregnated endless belt for a long nip press or calender of the shoe type, or for other papermaking and paper-processing applications, has a base support structure which includes coated elements, such as yarns, having a coating of a first polymeric resin material. The base support structure is in the form of an endless loop, at least one of the inner and outer surfaces of which is coated with a second polymeric resin material. The second polymeric resin material impregnates the structure of the base support structure, rendering it impermeable to oil and water. The first and second polymeric resin materials have an affinity for one another, so that the coating of second polymeric resin material on the base support structure as a whole establishes a chemical, as well as a mechanical, interlock with the coated yarns having the coating of first polymeric resin material.Type: GrantFiled: August 25, 1999Date of Patent: October 15, 2002Assignee: Albany International Corp.Inventors: Keith FitzPatrick, Francis L. Davenport
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Patent number: 5753085Abstract: A long nip press belt for a papermaking machine has a textile substrate impregnated and coated on at least one side with a polymeric resin material. The polymeric resin material is ground and buffed after being cured to provide the belt with a smooth surface and a uniform thickness. The textile substrate includes textile components (monofilaments, continuous fine filaments or staple fibers) having non-circular cross sections with a plurality of lobes. Such cross sections provide the textile components with a greater surface area than would be provided by components of equal denier having circular cross sections. As a consequence, the mechanical interlock and chemical bond or adhesion of the polymeric resin coating to the textile substrate are strengthened. In addition, the textile components having non-circular cross-sections with a plurality of lobes reduce the permeability of the textile substrate, so that polymeric resin material applied to one side may be prevented from flowing through to the other side.Type: GrantFiled: June 11, 1996Date of Patent: May 19, 1998Assignee: Albany International Corp.Inventor: Keith FitzPatrick
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Patent number: 5508094Abstract: A press fabric for use on the press section of a paper machine has a multilayer structure, and is woven according to techniques normally applied in the weaving of forming fabrics. The press fabric is woven from at least one system of warp yarns and two or more layers of weft yarns, with the yarn sizes and weave patterns chosen with a view toward providing the resulting press fabric with a fine paper-contacting surface, and ample void volume. One of the two or more layers of weft yarns includes, or is entirely composed of, multicomponent yarns having a plurality of load-bearing members. The multicomponent yarns may be multifilament or multistrand yarns composed of fine filaments, or may be polyurethane-coated monofilament yarns, and provide the press fabrics with a compressible and resilient structure. The multifilament or multistrand yarns may also be polyurethane-coated.Type: GrantFiled: August 16, 1994Date of Patent: April 16, 1996Assignee: Albany International Corp.Inventors: William M. McCarthy, Ebo E. Dam, Wil F. van Bergen, Keith Fitzpatrick
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Patent number: 5360518Abstract: A press fabric for use on the press section of a paper machine has a multilayer structure, and is woven according to techniques normally applied in the weaving of forming fabrics. The press fabric is woven from at least one system of warp yarns and two or more layers of weft yarns, with the yarn sizes and weave patterns chosen with a view toward providing the resulting press fabric with a fine paper-contacting surface, and ample void volume. One of the two or more layers of weft yarns includes, or is entirely composed of, multicomponent yarns having a plurality of load-bearing members. The multicomponent yarns may be multifilament or multistrand yarns composed of fine filaments, or may be polyurethane-coated monofilament yarns, and provide the press fabrics with a compressible and resilient structure. The multifilament or multistrand yarns may also be polyurethane-coated.Type: GrantFiled: December 18, 1991Date of Patent: November 1, 1994Assignee: Albany International Corp.Inventors: William M. McCarthy, Ebo E. Dam, Wil F. van Bergen, Keith Fitzpatrick
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Patent number: 4882217Abstract: A needled press felt, i.e. a felt which is intended to be used in the press section of a papermaking machine. The batt part of the felt comprises at least two kinds of fiber one of which consists of fibers having a diameter size 0.010 mm or less. These fibers are removed either successively or intermittently during the service of the felt in the press section, whereas the rest of the fibers in the batt part of the felt, i.e. the fibers having a larger diameter than those of the first kind, remain in the batt part.Type: GrantFiled: November 9, 1988Date of Patent: November 21, 1989Assignee: Albany International Corp.Inventor: Keith FitzPatrick