Patents by Inventor Raoul W. Robert

Raoul W. Robert 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).

  • Valve stem and method of manufacture; improved stem packing
    Patent number: 6488263
    Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertically stacked array comprising alternating metal pressure rings and graphite seals.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: December 3, 2002
    Assignee: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Position sensing system for butterfly valves
    Patent number: 6386230
    Abstract: A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve member. At least one sensor is positioned for actuation by the magnet to indicate that the valve member is in its fully closed position.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 14, 2002
    Assignee: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Position sensing system for butterfly valves
    Publication number: 20010052363
    Abstract: A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve member. At least one sensor is positioned for actuation by the magnet to indicate that the valve member is in its fully closed position.
    Type: Application
    Filed: June 29, 2001
    Publication date: December 20, 2001
    Applicant: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Position sensing system for butterfly valves
    Patent number: 6276393
    Abstract: A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve member. At least one sensor is positioned for actuation by the magnet to indicate that the valve member is in its fully closed position.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: August 21, 2001
    Assignee: T&R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Valve stem and method of manufacture; improved stem packing
    Publication number: 20010013585
    Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertically stacked array comprising alternating metal pressure rings and graphite seals.
    Type: Application
    Filed: April 19, 2001
    Publication date: August 16, 2001
    Applicant: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Valve stem and method of manufacturing, improved stem packing
    Patent number: 6250604
    Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertically stacked array comprising alternating metal pressure rings and graphite seals.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: June 26, 2001
    Assignee: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Valve stem and method of manufacture; improved stem packing
    Patent number: 6247679
    Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertically stacked array comprising alternating metal pressure rings and graphite seals.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: June 19, 2001
    Assignee: T&S Solutions, Inc.
    Inventor: Raoul W. Robert
  • Method of making a valve stem
    Patent number: 6195890
    Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: March 6, 2001
    Assignee: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Position sensing system for butterfly valves
    Patent number: 6182690
    Abstract: A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve member. At least one sensor is positioned for actuation by the magnet to indicate that the valve member is in its fully closed position.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: February 6, 2001
    Assignee: T&R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Valve stem and method of manufacture
    Patent number: 6068018
    Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: May 30, 2000
    Assignee: T & R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Torque/position transducer
    Patent number: 5931044
    Abstract: A torque/position transducer is positioned between the valve stem of a valve and a valve operator and includes a body section including an input lug mated with the output lug of the valve operator and an output lug mated with the valve stem of the valve. Strain gauges mounted on the body generate an output signal indicate of the amount of torque necessary to open or close the valve. A magneto-resistive sensor generates a signal indicative of the position of the valve stem with respect to the valve. In another embodiment, the strain gauges are mounted on the valve stem.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: August 3, 1999
    Assignee: T&R Solutions, Inc.
    Inventor: Raoul W. Robert
  • Torque/position transducer
    Patent number: 5722286
    Abstract: A torque/position transducer is positioned between the valve stem of a valve and a valve operator adapted to open and close the valve and includes a body section including an input lug adapted for mating the engagement with the output lug of the valve operator and an output lug adapted for mating the engagement with the valve stem of the valve. A pair of strain gauges are mounted on the body of the torque/position transducer and function to generate an output signal indicative of the amount of torque necessary to open or close the valve. The body further includes a cam secured to the body section. A magnet is positioned in movable contact with the cam. A magneto-resistive sensor senses the movement of the magnet as the cam varies the distance from said magnet to said sensor and generates a signal indicative of the position of the valve stem with respect to the valve under the action of the valve operator.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: March 3, 1998
    Assignee: T & R Solutions, Inc.
    Inventors: Raoul W. Robert, Thomas Rogan Bernard, Jan Mark Bullock, Ronald H. Drushel