Patents by Inventor Eric W. Lalli

Eric W. Lalli 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).

  • Composite gasket for sealing flanges and method for making and using same
    Patent number: 5551706
    Abstract: Improved gasket material and method for use in sealing various flanged apparatus, such as found in distillation columns, glass lined vessels and transformer radiator flange seals. The gasket material comprises a cylindrical core of elongated polytetrafluoroethylene (PTFE) contained within a tight wrap of high strength film or films. The gasket material has the exceptional operational properties of PTFE, can be designed for specific situations, and has superior resistance to cold flow or "creep" which distorts most PTFE seals under heavy unconfined compression.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: September 3, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Eileen C. Barna, Elizabeth M. Hamilton, Eric W. Lalli, Cindy B. Lubin, Wanda F. Sparks, Alfred F. Waterland, III
  • Wrapped composite gasket material
    Patent number: 5494301
    Abstract: A composite gasket material composed of a core of elongated polytetrafluoroethylene wrapped with a high strength porous expanded polytetrafluoroethylene film is provided. The composite gasket material exhibits increased resistance to creep while in use so that thickness of the composite gasket material and thus gasket stress is maintained.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: February 27, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Elizabeth M. Hamilton, Eric W. Lalli, Cindy B. Lubin, Wanda F. Sparks, Alfred F. Waterland, III
  • O-ring gasket material and method for making and using same
    Patent number: 5492336
    Abstract: Improved O-ring gasket material and method for use in sealing various apparatus, such as fluid conduits for heat exchange apparatus, is provided. The gasket material comprises a cylindrical core of elongated polytetrafluoroethylene (PTFE) contained within a tight wrap of high strength film. The gasket material has the exceptional operational properties of PTFE, while being resistant to cold flow or "creep" which distorts most PTFE seals under heavy unconfined compression.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: February 20, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Eileen C. Barna, Elizabeth M. Hamilton, Eric W. Lalli, Cindy B. Lubin, Wanda F. Sparks, Alfred F. Waterland, III
  • Gasket material for use in plate and frame apparatus and method for making and using same
    Patent number: 5486010
    Abstract: Improved material and method for use in sealing plate and frame apparatus, such as a plate and frame heat exchanger, are provided. The gasket material comprises a core of elongated polytetrafluoroethylene (PTFE) contained within a tight wrap of high strength film. The gasket material has the exceptional operational properties of PTFE, while being resistant to cold flow or "creep" which distorts most PTFE seals under heavy unconfined compression. The preferred material is pre-compressed to aid in installation.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: January 23, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Elizabeth M. Hamilton, Eric W. Lalli, Cindy B. Lubin, Wanda F. Sparks, Alfred F. Waterland, III