Patents by Inventor Willorage Rathna Perera
Willorage Rathna Perera 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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Patent number: 10072362Abstract: A polymer-sheathed multi-filamentary strand for use in braided covers for wiring harnesses intended for use in challenging embodiments comprises a core of glass filaments wrapped in an aramid yarn, and sheathed in a siloxane-modified polyetherimide polymer. Shielding against electromagnetic interference may also be provided.Type: GrantFiled: June 27, 2016Date of Patent: September 11, 2018Assignee: Pascale Industries, Inc.Inventor: Willorage Rathna Perera
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Patent number: 9931794Abstract: Yarns for use in manufacture of composite structures are intermittently coated with adhesive, and may be twisted as well. These yarns are then woven into fabric, and heat and pressure applied to the intermittently-coated yarns to provide dimensional stability and to prevent unravelling of the fabric during cutting and handling. The fabric is then disposed in a mold or over a mandrel, and a curable resin applied and caused to cure. Provision of the adhesive in intermittent fashion limits propagation of cracks that may form at the location of the adhesive, which does not bond well to the curable resin.Type: GrantFiled: September 18, 2015Date of Patent: April 3, 2018Assignee: Pascale Industries, Inc.Inventor: Willorage Rathna Perera
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Publication number: 20170370026Abstract: A polymer-sheathed multi-filamentary strand for use in braided covers for wiring harnesses intended for use in challenging embodiments comprises a core of glass filaments wrapped in an aramid yarn, and sheathed in a siloxane-modified polyetherimide polymer. Shielding against electromagnetic interference may also be provided.Type: ApplicationFiled: June 27, 2016Publication date: December 28, 2017Applicant: Pascale Industries, Inc.Inventor: Willorage Rathna Perera
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Publication number: 20170080644Abstract: Yarns for use in manufacture of composite structures are intermittently coated with adhesive, and may be twisted as well. These yarns are then woven into fabric, and heat and pressure applied to the intermittently-coated yarns to provide dimensional stability and to prevent unravelling of the fabric during cutting and handling. The fabric is then disposed in a mold or over a mandrel, and a curable resin applied and caused to cure. Provision of the adhesive in intermittent fashion limits propagation of cracks that may form at the location of the adhesive, which does not bond well to the curable resin.Type: ApplicationFiled: September 18, 2015Publication date: March 23, 2017Inventor: Willorage Rathna Perera
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Patent number: 8800136Abstract: Insulated electrically conductive fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: GrantFiled: September 27, 2010Date of Patent: August 12, 2014Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8474399Abstract: A strand is coated with a powdered material by first applying a layer of hot polymer resin to the strand, and spraying the powdered material onto the resin-coated strand from at least three nozzles disposed along the processing path and spaced radially therearound. The spray apparatus is disposed within nested containers so as to limit the escape of overspray powder. The powder-coated strand may be heat-set to increase the adhesion of the powder.Type: GrantFiled: July 5, 2012Date of Patent: July 2, 2013Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8348137Abstract: Connections can be made to microwires comprising a conductor of a lower melting point metal (e.g., indium 290) in a sheath of higher melting point polymer (e.g., PETG) by placing a small diameter spring, slightly larger in inside diameter than the outer diameter of the microwire, and of a readily solderable material over the distal end of the microwire. The conductor of the microwire is then soldered to the distal end of the spring in any of several ways that result in a solid member at the distal end of the microwire. The flexible spring provides a flexible support for the microwire, so that as the microwire flexes in use, the spring provides a strain relief; that is, the proximal portion of the spring flexes along with the microwire, so that the microwire bends over some distance rather than at a single point.Type: GrantFiled: April 19, 2012Date of Patent: January 8, 2013Assignee: Pascale Industries, Inc.Inventor: Willorage Rathna Perera
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Publication number: 20120301719Abstract: A strand is coated with a powdered material by first applying a layer of hot polymer resin to the strand, and spraying the powdered material onto the resin-coated strand from at least three nozzles disposed along the processing path and spaced radially therearound. The spray apparatus is disposed within nested containers so as to limit the escape of overspray powder. The powder-coated strand may be heat-set to increase the adhesion of the powder.Type: ApplicationFiled: July 5, 2012Publication date: November 29, 2012Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8236376Abstract: A strand is coated with a powdered material by first applying a layer of hot polymer resin to the strand, and spraying the powdered material onto the resin-coated strand from at least three nozzles disposed along the processing path and spaced radially therearound. The spray apparatus is disposed within nested containers so as to limit the escape of overspray powder. The powder-coated strand may be heat-set to increase the adhesion of the powder.Type: GrantFiled: September 2, 2008Date of Patent: August 7, 2012Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8178020Abstract: A fiber is produced comprising polymers of differing types which are not admixed during production. The differing polymer types are heated to the point of softening in a vertically-oriented crucible and a fiber comprising the polymers in positions corresponding to their positions in the crucible is drawn from an orifice at the lower end of the crucible.Type: GrantFiled: July 18, 2008Date of Patent: May 15, 2012Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 7926171Abstract: Insulated electrically conductive continuous fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: GrantFiled: April 6, 2009Date of Patent: April 19, 2011Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Publication number: 20110030329Abstract: Insulated electrically conductive fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: ApplicationFiled: September 27, 2010Publication date: February 10, 2011Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 7832089Abstract: Insulated electrically conductive fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: GrantFiled: October 22, 2007Date of Patent: November 16, 2010Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 7785509Abstract: A precursor yarn or thread is made by passing a central element, e.g., a filament, a tow, or a flat member, through a bath of a binder, such as a low-temperature hot-melt adhesive, and aqueous urethane, or an acrylic material, with which is mixed a quantity of hard-shelled microspheres which expand when heated to a higher temperature. This is then covered by a sheath, e.g, of PVC, polyurethane, polyester, acrylic resin, polycarbonate, polypropylene, or polyethylene in a second bath. When this product is heated to a transition temperature which is characteristic of the microspheres chosen, the microspheres expand, swelling the sheath. Such a precursor could be woven into a fabric and then heated, so that as the yarn expands the fabric mesh becomes tighter, reducing its porosity. This would be useful as a yarn in making papermaker's felts.Type: GrantFiled: December 21, 2005Date of Patent: August 31, 2010Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Publication number: 20100123385Abstract: Electroluminescent fibers comprise two spaced elongated continuous electrical conductors in a matrix of a polymer containing particles of a phosphor. When suitable electrical power is applied to the conductors, the phosphor glows along the length of the fiber. The fibers can be used to make a variety of useful and attractive products.Type: ApplicationFiled: November 18, 2008Publication date: May 20, 2010Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Publication number: 20100055456Abstract: A strand is coated with a powdered material by first applying a layer of hot polymer resin to the strand, and spraying the powdered material onto the resin-coated strand from at least three nozzles disposed along the processing path and spaced radially therearound. The spray apparatus is disposed within nested containers so as to limit the escape of overspray powder. The powder-coated strand may be heat-set to increase the adhesion of the powder.Type: ApplicationFiled: September 2, 2008Publication date: March 4, 2010Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Publication number: 20090260848Abstract: Insulated electrically conductive continuous fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: ApplicationFiled: April 6, 2009Publication date: October 22, 2009Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Publication number: 20090065969Abstract: A fiber is produced comprising polymers of differing types which are not admixed during production. The differing polymer types are heated to the point of softening in a vertically-oriented crucible and a fiber comprising the polymers in positions corresponding to their positions in the crucible is drawn from an orifice at the lower end of the crucible.Type: ApplicationFiled: July 18, 2008Publication date: March 12, 2009Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Publication number: 20080254206Abstract: Insulated electrically conductive fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: ApplicationFiled: October 22, 2007Publication date: October 16, 2008Inventors: Willorage Rathna Perera, Gerald J. Mauretti