Patents by Inventor Peter J. Metcalfe

Peter J. Metcalfe 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).

  • Patent number: 8728213
    Abstract: A radial seal is described for use in a filtration system having annular elements. The rings or annuli fit in a groove in an outer surface of a seal plate. Each annulus has an outer diameter larger than the inner diameter of a cylindrical housing of the filtration system. A gap in the annulus has a width selected to enable the annular element to deform sufficiently to permit insertion of the at least one annulus into the cylindrical housing. Two or more annuli can be configured such that the gaps of the annuli are misaligned when both annuli are installed in the groove, thereby minimizing leakage in operation. A registration system includes a registration element that cooperates with a registration element of the other annulus to ensure misalignment of the gaps of the pair of annuli.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: May 20, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Curtis J. Elwell, Frederick K. Lesan, Victor Verbeek, Peter J. Metcalfe
  • Patent number: 5618556
    Abstract: There is described an adhesive dressing comprising a backing layer having a pressure sensitive adhesive layer over one surface thereof, a pad adhered to a portion of the adhesive layer a removable protector which covers the remainder of the adhesive layer and a conformable support layer which is lightly attached to the non-adhesive surface of the backing layer characterised in that the removable protector is provided with an aperture through which the pad is adhered to the adhesive layer.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: April 8, 1997
    Assignee: Smith & Nephew United Inc
    Inventors: Owen L. Johns, Peter J. Metcalfe
  • Patent number: 4863778
    Abstract: The present invention is directed to an elastic apertured film which contains voids. The film comprises a blend of polyurethane and an incompatible polymer which forms a discrete phase within the matrix of polyurethane. The film is in the form of a net. The area of apertures is 5 to 75% of the total area of the film or alternatively, the film is in the form of an interrupted film containing a pattern of holes which have a maximum dimension of not more than 3 times the thickness of the film.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: September 5, 1989
    Assignee: Smith and Nephew Associated Companies p.l.c.
    Inventor: Peter J. Metcalfe
  • Patent number: 4596738
    Abstract: A moisture vapor transmitting elastomeric film which comprises a blend of incompatible polymers and contains voids characterized in that the blend comprises a continuous matrix of ethylene vinyl acetate within which the incompatible polymer forms a discrete particulate phase matrix, processes for the preparation thereof and articles comprising these films are described.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: June 24, 1986
    Assignee: Smith and Nephew Associated Companies p.l.c.
    Inventors: Peter J. Metcalfe, Andrew J. Carter
  • Patent number: 4559938
    Abstract: A flexible film suitable for use in adhesive medical dressings which film comprises a blend of polymers characterized in that the blend comprises a continuous matrix of 1,2 polybutadiene and an incompatible polymer which forms a discrete particulate phase within the continuous matrix and the film contains voids is described.
    Type: Grant
    Filed: August 11, 1982
    Date of Patent: December 24, 1985
    Assignee: Smith and Nephew Associated Companies p.l.c.
    Inventor: Peter J. Metcalfe
  • Patent number: 4452845
    Abstract: A moisture vapor transmitting film comprising a blend of polyurethane and an incompatible polymer characterized in that the incompatible polymer forms a discrete phase within a continuous matrix of polyurethane and that said film contains voids and processes for the manufacture thereof.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: June 5, 1984
    Assignee: Smith and Nephew Associated Companies Limited
    Inventors: Ronald Lloyd, Peter J. Metcalfe