Patents by Inventor Randall Hall
Randall Hall 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: 9752256Abstract: The invention relates to a continuous process for making a yarn comprising filaments of poly (paraphenylene terephthalamide) and the yarn made thereby, the process utilizing a coagulation bath having a temperature of at least 20° C., washing with an aqueous liquid, and drying the filaments under a tension of 0.3 to 1.0 grams per denier wherein the filaments are dried for 0.4 to 0.9 seconds at a temperature of from 250 to 325° C. The yarn has a tenacity of at least 22 gpd, an elongation at break of at least 3.2 percent, and a tensile modulus of from 530 to 700 gpd; the yarn further has a heat-aged strength retention (HASR) of at least 93 percent and the filaments in the yarn have a D110 crystallinity of at least 55 angstroms.Type: GrantFiled: July 21, 2015Date of Patent: September 5, 2017Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Mehdi Afshari, Walter Randall Hall, III
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Publication number: 20160363575Abstract: This invention encompasses embodiments for multi-modal integrated simultaneous measurement of various aspects of fluids contained in circulating systems such as automotive reciprocating engines and vehicle transmissions. These circulating systems perform constant internal lubrication, and heat and contaminant removal to protect the internal moving parts from the inherent friction and damage in normal operation. Most commonly this is achieved with fluids based on hydrocarbon and/or related synthetics, which, over time, can lose their protective properties, and vary in their performance or breakdown/decay due to internal and external events. Several components within the lubricant fluid can be measured and can provide insight into the efficacy of the system to perform its designed mission. The mass and level of the fluid may also be monitored on an on-going basis. Described herein is a real-time, simultaneous, integrated, multi-modal sensor system for early warning notification.Type: ApplicationFiled: June 10, 2016Publication date: December 15, 2016Applicant: Micromem Applied Sensor Technologies Inc.Inventors: BRIAN VON HERZEN, STEVEN VAN FLEET, HAMISH FALLSIDE, RANDALL HALL
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Patent number: 9389215Abstract: This invention encompasses embodiments for multi-modal integrated simultaneous measurement of various aspects of fluids contained in circulating systems such as automotive reciprocating engines and vehicle transmissions. These circulating systems perform constant internal lubrication, and heat and contaminant removal to protect the internal moving parts from the inherent friction and damage in normal operation. Most commonly this is achieved with fluids based on hydrocarbon and/or related synthetics, which, over time, can lose their protective properties, and vary in their performance or breakdown/decay due to internal and external events. Several components within the lubricant fluid can be measured and can provide insight into the efficacy of the system to perform its designed mission. The mass and level of the fluid may also be monitored on an on-going basis. Described herein is a real-time, simultaneous, integrated, multi-modal sensor system for early warning notification.Type: GrantFiled: March 15, 2013Date of Patent: July 12, 2016Assignee: MASTINCInventors: Brian Von Herzen, Steven Van Fleet, Hamish Fallside, Randall Hall
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Publication number: 20160032492Abstract: The invention relates to a continuous process for making a yarn comprising filaments of poly (paraphenylene terephthalamide) and the yarn made thereby, the process utilizing a coagulation bath having a temperature of at least 20° C., washing with an aqueous liquid, and drying the filaments under a tension of 0.3 to 1.0 grams per denier wherein the filaments are dried for 0.4 to 0.9 seconds at a temperature of from 250 to 325° C. The yarn has a tenacity of at least 22 gpd, an elongation at break of at least 3.2 percent, and a tensile modulus of from 530 to 700 gpd; the yarn further has a heat-aged strength retention (HASR) of at least 93 percent and the filaments in the yarn have a D110 crystallinity of at least 55 angstroms.Type: ApplicationFiled: July 21, 2015Publication date: February 4, 2016Inventors: MEHDI AFSHARI, WALTER RANDALL HALL III
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Patent number: 8584557Abstract: A clamshell lathe that can be utilized to machine or mill a portion of a workpiece such as a tube or pipe, wherein the clamshell lathe is a generally annular device that includes a stationary member and a rotatable member each preferably comprising semi-cylindrical halves that are connected together around the workpiece to be machined. The stationary member includes a bearing channel in which bearings of the rotatable member travel when the rotatable member is activated. In a preferred embodiment, an inner wall of the bearing channel has an angled end portion that is positioned adjacent an angled end portion of the rotatable member.Type: GrantFiled: December 28, 2009Date of Patent: November 19, 2013Assignee: H&S Tool, Inc.Inventors: J. Randall Hall, Robert E. Cormany, II
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Patent number: 8250953Abstract: A tripper assembly for use in advancing a clamshell lathe tool slide including a tool for milling a portion of a workpiece such as a tube or pipe, the tool slide being operatively connected to a rotatable ring of the clamshell lathe and the tripper assembly operatively connected to a stationary ring of the clamshell lathe. The design of the tripper assembly is such that the position, engaged or disengaged, of the tripper element can be easily ascertained.Type: GrantFiled: December 28, 2009Date of Patent: August 28, 2012Assignee: H&S Tool, Inc.Inventors: J. Randall Hall, Robert E. Cormany
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Publication number: 20120076600Abstract: A milling head for use in conjunction with a rotary milling tool that is utilized to perform an operation on a tube, preferably of a tube bank or tube wall of a boiler system. The milling head is utilized to remove material or film from the outer diameter of a tube, or place a bevel on a tube end, or both. In one embodiment, the milling head includes at least one outer diameter milling element and at least one bevel milling element that are adjustable in relation to each other as well as the milling head body. Methods for milling a tube are also described.Type: ApplicationFiled: December 7, 2011Publication date: March 29, 2012Applicant: H&S Tool, Inc.Inventor: J. Randall Hall
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Patent number: 8100037Abstract: A milling head for use in conjunction with a rotary milling tool that is utilized to perform an operation on a tube, preferably of a tube bank or tube wall of a boiler system. The milling head is utilized to remove material or film from the outer diameter of a tube, or place a bevel on a tube end, or both. In one embodiment, the milling head includes at least one outer diameter milling element and at least one bevel milling element that are adjustable in relation to each other as well as the milling head body. Methods for milling a tube are also described.Type: GrantFiled: October 21, 2005Date of Patent: January 24, 2012Assignee: H&S Tool, Inc.Inventor: J. Randall Hall
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Patent number: 7785048Abstract: A milling head for a milling device, particularly a rotary milling device, wherein the milling head is capable of imparting a desired finish on a tube, preferably of a heat exchanger tube. The milling head includes one or more milling elements capable of cutting and/or removing heat dissipating elements connected to an outer surface of the tube. The heat dissipating elements are removed from the tube in a longitudinal direction along the tube length. In one embodiment, the milling head also includes a bevel milling element. Methods for milling a tube having heat dissipating elements are also described.Type: GrantFiled: December 2, 2008Date of Patent: August 31, 2010Assignee: H&S Tool, Inc.Inventor: J. Randall Hall
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Publication number: 20100180745Abstract: A guide rail assembly for securement of a tube cutting apparatus for cutting of boiler tube walls to a fixed point on a tube wall, while allowing lateral repositioning of a cutting tool relative to the tube wall. The assembly includes a guide rail having a convex surface along which a carriage having a cutting device may be fixedly positioned by mating friction engagement of a concave surface of pairs of linear guide blocks secured to the carriage with the convex surface of the guide rail.Type: ApplicationFiled: January 19, 2010Publication date: July 22, 2010Applicant: H&S Tool, Inc.Inventor: J. Randall Hall
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Publication number: 20100162862Abstract: A tripper assembly for use in advancing a clamshell lathe tool slide including a tool for milling a portion of a workpiece such as a tube or pipe, the tool slide being operatively connected to a rotatable ring of the clamshell lathe and the tripper assembly operatively connected to a stationary ring of the clamshell lathe. The design of the tripper assembly is such that the position, engaged or disengaged, of the tripper element can be easily ascertained.Type: ApplicationFiled: December 28, 2009Publication date: July 1, 2010Applicant: H&S Tool, Inc.Inventors: J. Randall Hall, Robert E. Cormany
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Publication number: 20100162860Abstract: A clamshell lathe that can be utilized to machine or mill a portion of a workpiece such as a tube or pipe, wherein the clamshell lathe is a generally annular device that includes a stationary member and a rotatable member each preferably comprising semi-cylindrical halves that are connected together around the workpiece to be machined. The stationary member includes a bearing channel in which bearings of the rotatable member travel when the rotatable member is activated. In a preferred embodiment, an inner wall of the bearing channel has an angled end portion that is positioned adjacent an angled end portion of the rotatable member.Type: ApplicationFiled: December 28, 2009Publication date: July 1, 2010Applicant: H&S Tool, Inc.Inventors: J. Randall Hall, Robert E. Cormany
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Patent number: 7690283Abstract: A motor mount assembly for a milling tool, in particular a clamshell lathe, wherein the motor mount assembly has a housing that is secured to a stationary ring of the lathe and a drive gear rotatably journaled in the housing and in operative contact with gearing on a rotatable ring of the lathe that carries a cutting tool. The drive gear is operatively axially supported internally by both the drive shaft of the motor as well as by a portion of the motor mount assembly housing in order to provide a durable, long wearing motor mount assembly.Type: GrantFiled: March 10, 2009Date of Patent: April 6, 2010Assignee: H&S Tool, Inc.Inventors: J. Randall Hall, Robert E. Cormany
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Patent number: 7673549Abstract: The present invention relates to a guide rail assembly for securement of a tube cutting apparatus for cutting of boiler tube walls to a fixed point on a tube wall, while allowing lateral repositioning of a cutting tool relative to the tube wall. The assembly includes a guide rail having a convex surface along which a carriage having a cutting device may be fixedly positioned by mating friction engagement of a concave surface of pairs of linear guide blocks secured to the carriage with the convex surface of the guide rail.Type: GrantFiled: November 30, 2004Date of Patent: March 9, 2010Assignee: H&S Tool, Inc.Inventor: J. Randall Hall
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Patent number: 7653997Abstract: The present invention relates to a guide rail assembly for securement of a tube cutting apparatus for cutting of boiler tube walls to a fixed point on a tube wall, while allowing lateral repositioning of a cutting tool relative to the tube wall. The assembly includes a guide rail having a convex surface along which a carriage having a cutting device may be fixedly positioned by mating friction engagement of a concave surface of pairs of linear guide blocks secured to the carriage with the convex surface of the guide rail.Type: GrantFiled: March 13, 2008Date of Patent: February 2, 2010Assignee: H&S Tool, Inc.Inventor: J. Randall Hall
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Patent number: 7607374Abstract: Tube ends such as those of boiler tube banks, are prepared utilizing any of various combinations of processes which include a step of micro-diameter tube film removal from a portion of a tube end, including an area below a beveled segment, or segment to be beveled. The micro-diameter film removal step provides the tube with an exposed, clean metal surface which is conducive to a subsequent welding or bonding operation performed on the tube. Preferably, the process is performed with a tube milling tool having interchangeable milling or cutting heads. A specialized milling head is also disclosed and, in one embodiment, is at least used to perform the micro-diameter tube film removal step. Advantageously, the tube film removal milling head also removes a weld overlay on one or both sides of a tube in one embodiment. The tube film removal milling head includes an attached blade having a planar face configuration which enables tube film removal.Type: GrantFiled: June 21, 2005Date of Patent: October 27, 2009Assignee: H&S Tool, Inc.Inventor: J. Randall Hall
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Publication number: 20090094754Abstract: A foam core article such as a mattress or pillow is covered on a surface with a flexible heat-resistant knitted fabric. Preferably a further sacrificial fabric also is used to allow passage of CPSC 16 CFR 1633 with a peak heat release of no more than 200 kilowatts in a 30 minute time period following ignition.Type: ApplicationFiled: September 24, 2008Publication date: April 16, 2009Inventors: Walter Randall Hall, III, Warren Francis Knoff, Llewellyn Bentley Richardson, III
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Publication number: 20090083910Abstract: Flame resistant fabrics useful as battings such as in mattresses and upholstery contain cellulose fibers (which retain at least 10 percent of their weight when heated in air to 700° C. at a rate of 20° C. per minute) and animal wool.Type: ApplicationFiled: December 8, 2008Publication date: April 2, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Warren F. Knoff, Walter Randall Hall, III
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Publication number: 20090087274Abstract: A milling head for a milling device, particularly a rotary milling device, wherein the milling head is capable of imparting a desired finish on a tube, preferably of a heat exchanger tube. The milling head includes one or more milling elements capable of cutting and/or removing heat dissipating elements connected to an outer surface of the tube. The heat dissipating elements are removed from the tube in a longitudinal direction along the tube length. In one embodiment, the milling head also includes a bevel milling element. Methods for milling a tube having heat dissipating elements are also described.Type: ApplicationFiled: December 2, 2008Publication date: April 2, 2009Applicant: H&S Toll, Inc.Inventor: J. Randall Hall
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Patent number: D1025495Type: GrantFiled: October 14, 2022Date of Patent: April 30, 2024Assignee: Hall A&M LLCInventors: Matthew Hall, Randall Berry, Victor Adamo, Janell Bonnett, Daniel Bonnett