Patents by Inventor Robert A. Ashworth

Robert A. Ashworth 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).

  • Publication number: 20240106618
    Abstract: A technology is described for a time division duplex (TDD) repeater with circulators. The TDD repeater can comprise a first port, a second port, a first circulator, a second circulator, and first and second amplification paths coupled between the first circulator and first port and the second circulator and second port. The TDD repeater can comprise a software defined filter (SDF) on each of the first and second amplification paths to filter selected symbols of TDD signals on the first and second amplification paths.
    Type: Application
    Filed: September 23, 2023
    Publication date: March 28, 2024
    Inventors: Christopher Ken Ashworth, Dale Robert Anderson
  • Publication number: 20240088995
    Abstract: A technology is described for a terrestrial and non-terrestrial signal repeater system operable to receive, filter, amplify, and transmit terrestrial and non-terrestrial signals. The repeater system includes a donor port, a server port, a first direction amplification and filtering paths and second direction amplification and filtering paths coupled between the ports, and a controller. One or more donor antennas are configured to be coupled to a donor port of the repeater. One of the one or more donor ports can be configured to transmit and receive signals with an orbiting satellite.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 14, 2024
    Inventors: Christopher Ken Ashworth, Dale Robert Anderson, Ilesh V. Patel
  • Publication number: 20240080103
    Abstract: A technology is described for a repeater. The repeater can comprise a first antenna port, a second antenna port, one or more first direction amplification and filtering paths, one or more second direction amplification and filtering paths, and a controller. The first antenna port can be configured to be coupled to a first antenna. The second antenna port can be configured to be coupled to a second antenna. The one or more first direction amplification and filtering paths can be coupled between the first antenna port and the second antenna port. The one or more second direction amplification and filtering paths can be coupled between the first antenna port and the second antenna port. The controller can be configured to switch the repeater between a radio frequency (RF) mode or a fiber optic mode.
    Type: Application
    Filed: August 4, 2023
    Publication date: March 7, 2024
    Inventors: Stephen Todd Fariss, Michael James Mouser, Ilesh V. Patel, Dale Robert Anderson, Christopher Ken Ashworth
  • Publication number: 20240052527
    Abstract: This invention relates to polyvinyl alcohol fibers, methods of making polyvinyl alcohol fibers and products manufactured from polyvinyl alcohol fibers. The invention relates particularly but not exclusively to products comprising spunbond polyvinyl alcohol fibers, methods of making spunbond polyvinyl alcohol fibers and products incorporating such fibers.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 15, 2024
    Inventors: John Williams, Sian Griffiths, Robert Ashworth, Jack Eaton
  • Publication number: 20240052156
    Abstract: This invention relates to polyvinyl alcohol fibers, methods of making polyvinyl alcohol fibres and products manufactured from polyvinyl alcohol fibers. The invention relates particularly but not exclusively to products comprising meltblown polyvinyl alcohol fibers, methods of making meltblown polyvinyl alcohol fibres and products incorporating such fibers.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 15, 2024
    Inventors: John Williams, Sian Griffiths, Robert Ashworth, Jack Eaton
  • Publication number: 20240052526
    Abstract: This invention relates to polyvinyl alcohol fibers, methods of making polyvinyl alcohol fibers and products manufactured from polyvinyl alcohol fibers. The invention relates particularly but not exclusively to products comprising non-woven polyvinyl alcohol fibers, methods of making non-woven polyvinyl alcohol fibers and products incorporating such fibers.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 15, 2024
    Inventors: John Williams, Sian Griffiths, Robert Ashworth, Jack Eaton
  • Publication number: 20240051210
    Abstract: This invention relates to polyvinyl alcohol fibers, methods of making polyvinyl alcohol fibers and products manufactured from polyvinyl alcohol fibers. The invention relates particularly but not exclusively to products comprising extruded polyvinyl alcohol fibers, methods of making extruded polyvinyl alcohol fibers and products incorporating such fibers.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 15, 2024
    Inventors: John Williams, Sian Griffiths, Robert Ashworth, Jack Eaton
  • Patent number: 11884807
    Abstract: The invention describes a method for the manufacture of a plasticized polyvinyl alcohol polymer mixture including the steps of: introducing into a mixing reactor a polyvinyl alcohol polymer comprising homopolymeric polyvinyl alcohol or a blend thereof having a degree of hydrolysis in the range of 93% to less than 98% or more; where the plasticizer comprises two or more compounds selected from the group consisting of diglycerol, triglycerol, xylose, D-mannitol, triacetin, dipentaerythritol, 1,4-butanediol, 3,3-dimethyl-1,2-butanediol, and caprolactam; reacting the water, the plasticizer and the polyvinyl alcohol polymer in the reaction zone to form the plasticized polymer; and allowing the plasticized polyvinyl alcohol polymer to pass from the primary outlet.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: January 30, 2024
    Assignee: Aquapak IP Limited
    Inventors: John Williams, Sian Griffiths, Robert Ashworth
  • Publication number: 20230348638
    Abstract: A method for manufacture of plasticized homopolymeric polyvinyl alcohol, the method comprising the steps of: introducing into a mixing reactor a polyvinyl alcohol polymer comprising polyvinyl alcohol or a blend thereof having a degree of hydrolysis in the range of 93 wt % to 98 wt %; wherein the mixing reactor comprises a blending chamber having a primary inlet, a primary outlet and at least two inter-engaging components extending between the primary inlet and primary outlet, the components being arranged to apply a shearing force to the polymer while the polymer is conveyed by the components from the inlet through a reaction zone to the outlet; one or more secondary inlets located downstream from the primary inlet for introducing reactants comprising a processing aid, a plasticizer and a reactive stabiliser stabilizer to the chamber to form a reaction mixture; wherein the plasticizer is selected from the group consisting of: sugar alcohols, diols, triols, polyols and mixtures thereof; wherein the reactive
    Type: Application
    Filed: July 6, 2021
    Publication date: November 2, 2023
    Inventors: John Williams, Sian Griffiths, Robert Ashworth
  • Publication number: 20230331876
    Abstract: A method for the manufacture of a plasticized polyvinyl alcohol polymer mixture comprising the steps of: introducing into a mixing reactor a polyvinyl alcohol polymer comprising homopolymeric polyvinyl alcohol or a blend thereof having a degree of hydrolysis in the range of 93% to 98% or more; wherein the mixing reactor comprises a blending chamber having a primary inlet, a primary outlet and at least two inter-engaging components extending between the primary inlet and primary outlet, the components being arranged to apply a shearing force to the polymer while the polymer is conveyed by the components from the inlet through a reaction zone to the outlet; one or more secondary inlets located downstream from the primary inlet for introducing reactants comprising a processing aid and a plasticizer to the chamber to form a reaction mixture; wherein the plasticizer is selected from the group consisting of the following compounds and mixtures thereof: (a) sugar alcohols selected from the group consisting of: di
    Type: Application
    Filed: July 6, 2021
    Publication date: October 19, 2023
    Inventors: John Williams, Sian Griffiths, Robert Ashworth
  • Publication number: 20220064860
    Abstract: A method of manufacture of a coated material is provided. A polyvinyl alcohol polymer, where the polyvinyl alcohol polymer has a degree of hydrolysis of 90% or greater and a melting point in the range of 180° C. to 225° C. is melted on a cellulosic substrate and extruded to form a molten polyvinyl alcohol polymeric film which is then applied directly to the surface of the substrate to form the coated material.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 3, 2022
    Inventors: John Williams, Sian Griffiths, Robert Ashworth, David Lee Meadows
  • Publication number: 20220002532
    Abstract: The invention describes a method for the manufacture of a plasticized polyvinyl alcohol polymer mixture including the steps of introducing a polyvinyl alcohol or a blend thereof having a degree of hydrolysis in the range of 93% to 98% or more into a mixing reactor; adding a processing agent, and a plasticizer to form a reaction mixture; wherein the plasticizer is selected from the group consisting of the following compounds and mixtures thereof: (a) sugar alcohols selected from the group consisting of: diglycerol, triglycerol, fructose, ribose, xylose, D-mannitol, triacetin, and mixtures thereof; polyols selected from the group consisting of: pentaerythritol, dipentaerythritol, and mixtures thereof; (b) diols selected from the group consisting of: methyl pentanediol, 1,2-propanediol, 1,4-butanediol, 2-hydroxy-1,3-propanediol, 3-methyl-1,3-butanediol, 3,3-dimethyl-1,2-butanediol, and mixtures thereof; (c) glycols selected from the group consisting of: polyethylene glycol 300, polyethylene glycol 400, alkoxy
    Type: Application
    Filed: July 6, 2021
    Publication date: January 6, 2022
    Inventors: John Williams, Sian Griffiths, Robert Ashworth
  • Publication number: 20220002518
    Abstract: The invention describes a method for manufacture of plasticized homopolymeric polyvinyl alcohol, the method including the steps of introducing a polyvinyl alcohol polymer or a blend thereof having a degree of hydrolysis in the range of 93 wt % to 98 wt % into a mixing reactor; adding a processing agent, a plasticizer and a reactive stabilizer to form a reaction mixture; wherein the plasticizer is selected from the group consisting of sugar alcohols, diols, triols, polyols and mixtures thereof; wherein the reactive stabilizer is selected from the group consisting of sodium stearate, potassium oleate, sodium benzoate, calcium stearate, stearic acid, dimethyl propionic acid, and mixtures thereof;-reacting the reaction mixture in a reaction zone to form plasticized polymer; and-allowing the plasticized polymer to pass from the reaction zone.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 6, 2022
    Inventors: John Williams, Sian Griffiths, Robert Ashworth
  • Patent number: 9828721
    Abstract: A collapsible container is provided having an outer liner defining a top, a bottom and vertical sides and an inner liner defining a plurality of sides corresponding to the vertical sides of the outer liner. The inner liner is attached to the outer liner at least at one of the top and the bottom of the outer liner, and each side of the inner liner defines a top edge, a bottom edge, and two side edges which extend vertically. A sleeve is attached to each of the edges of the inner liner at the top, bottom, and sides thereof. The sleeves define substantially circular tubes. A flexible frame is located between the outer liner and the inner liner and disposed within the plurality of sleeves to provide a flexible support and permits collapse and/or folding of the container.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: November 28, 2017
    Assignee: Butler Home Products, LLC
    Inventors: Michael Silverman, Robert Cavalcanti, Robert Ashworth
  • Publication number: 20160167832
    Abstract: A collapsible container is provided having an outer liner defining a top, a bottom and vertical sides and an inner liner defining a plurality of sides corresponding to the vertical sides of the outer liner. The inner liner is attached to the outer liner at least at one of the top and the bottom of the outer liner, and each side of the inner liner defines a top edge, a bottom edge, and two side edges which extend vertically. A sleeve is attached to each of the edges of the inner liner at the top, bottom, and sides thereof. The sleeves define substantially circular tubes. A flexible frame is located between the outer liner and the inner liner and disposed within the plurality of sleeves to provide a flexible support and permits collapse and/or folding of the container.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 16, 2016
    Inventors: Michael Silverman, Robert Cavalcanti, Robert Ashworth
  • Publication number: 20060263073
    Abstract: A heater operates at a first power to heat a space and a second power to maintain the temperature. The heater uses a first heating element and a second heating element, which are configured to automatically supply the first power during an initial heating period, then step down to the second power for continuous operation. The heater may use a phase chopper circuit and heating element; switched diode and heating element; positive temperature coefficient thermostat, isolated heater, and heating element; latching mechanical timer switch and heating element; and/or a positive temperature coefficient heating element and multi-speed fan to provide dual power levels. The heater may include a first heating element energized during a portion of a heating cycle and a second heating element continuously energized during the heating cycle. The heating cycle is repeated for a period after which both elements are de-energized.
    Type: Application
    Filed: May 22, 2006
    Publication date: November 23, 2006
    Inventors: Brian Clarke, Robert Ashworth, John Crawford, Sean Crossman, Randall Hoover, Charles Thrasher, Danny Xu
  • Patent number: 6954071
    Abstract: Cathodic protection voltages are used to resist the damage to pipes or cables from electrolytic effects. However, localized fields can lead to stray currents and may result in corrosion and it is therefore desirable to detect and analyse those stray currents. Frequently there are several pipes in the area of interest and so it is necessary to distinguish between those pipes. Therefore the cathodic voltage on the pipes is modulated, with different pipes having different modulations. This modulation may be applied using an interrupter. Orthogonal modulations with non-unitary aspect ratios improve the discrimination between the pipes while maximizing the energy content of the modulation pattern. The analysis is improved when the interrupters are synchronized with each other and so repeating on the same time-base. This synchronization may be achieved using an external time signal such as GPS. An interrupter which can be used in this regard is also proposed, and may be powered from the cathodic voltage itself.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: October 11, 2005
    Assignee: Radiodetection Limited
    Inventors: David William Flatt, Stephen John Petherick, Robert Ashworth Worsely
  • Publication number: 20040202594
    Abstract: Method for removing mercury emissions from the burning of coal or other carbonaceous fuels, such as in a power plant or from coal gasification. Alkali additives are introduced in the coal gasification and staged coal combustion processes to capture the mercury in an alkaline molten slag. The combustor is operated at a stoichiometric air or oxygen to fuel ratio of about 0.40 to 0.80 and a temperature range of about 2200°-3000° F. During the staged combustion process the molten slag containing combinations of alkali and mercury is removed and disposed of to minimize or prevent mercury from escaping in the flue gas.
    Type: Application
    Filed: January 14, 2004
    Publication date: October 14, 2004
    Inventor: Robert A. Ashworth
  • Publication number: 20040004479
    Abstract: Cathodic protection voltages are used to resist the damage to pipes or cables from electrolytic effects. However, localised fields can lead to stray currents and may result in corrosion and it is therefore desirable to detect and analyse those stray currents. Frequently there are several pipes in the area of interest and so it is necessary to distinguish between those pipes. Therefore the cathodic voltage on the pipes is modulated, with different pipes having different modulations. This modulation may be applied using an interrupter. Orthogonal modulations with non-unitary aspect ratios improve the discrimination between the pipes whilst maximising the energy content of the modulation pattern. The analysis is improved when the interrupters are synchronised with each other and so repeating on the same time-base. This synchronisation may be achieved using an external time signal such as GPS. An interrupter which can be used in this regard is also proposed, and may be powered from the cathodic voltage itself.
    Type: Application
    Filed: July 1, 2003
    Publication date: January 8, 2004
    Applicant: Radiodetection Limited,
    Inventors: David William Flatt, Stephen John Petherick, Robert Ashworth Worsley
  • Patent number: 6617855
    Abstract: Cathodic protection voltages are used to resist the damage to pipes or cables from electrolytic effects. However, localised fields can lead to stray currents and may result in corrosion and it is therefore desirable to detect and analyse those stray currents. Frequently there are several pipes in the area of interest and so it is necessary to distinguish between those pipes. Therefore the cathodic voltage on the pipes is modulated, with different pipes having different modulations. This modulation may be applied using an interrupter. Orthogonal modulations with non-unitary aspect ratios improve the discrimination between the pipes whilst maximising the energy content of the modulation pattern. The analysis is improved when the interrupters are synchronised with each other and so repeating on the same time-base. This synchronisation may be achieved using an external time signal such as GPS. An interrupter which can be used in this regard is also proposed, and may be powered from the cathodic voltage itself.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: September 9, 2003
    Assignee: Radiodetection Limited
    Inventors: David William Flatt, Stephen John Petherick, Robert Ashworth Worsely