Patents by Inventor Michael Sherlaw

Michael Sherlaw 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).

  • Seat assembly for butterfly valve
    Patent number: 4317558
    Abstract: A method of making an improved seat assembly for a butterfly valve. The seat assembly comprises a flexible, circular metal band embedded in a resilient material to form an annular seat assembly. The assembly is made by supporting the band in a fixed spatial position on movable finger members, positioning a mold about, but spaced from, the band, and molding the annular seat assembly in the mold to embed the band. The invention is also directed toward an improved seat assembly. In a preferred embodiment the circular band is made of two curved sections overlapping at the two joints and having diametrically opposite holes in the two overlapping areas.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: March 2, 1982
    Assignee: Crane Co.
    Inventor: Michael Sherlaw
  • Method for making seat assembly for butterfly valves
    Patent number: 4223430
    Abstract: A method of making an improved seat assembly for a butterfly valve. The seat assembly comprises a flexible, circular metal band embedded in a resilient material to form an annular seat assembly. The assembly is made by supporting the band in a fixed spatial position on movable finger members, positioning a mold about, but spaced from, the band, and molding the annular seat assembly in the mold to embed the band. The invention is also directed toward an improved seat assembly. In a preferred embodiment the circular band is made of two curved sections overlapping at the two joints and having diametrically opposite holes in the two overlapping areas.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: September 23, 1980
    Assignee: Crane Co.
    Inventor: Michael Sherlaw