Patents by Inventor David Sayers

David Sayers 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).

  • Shaft seal assembly and its associated method of manufacture
    Patent number: 7017916
    Abstract: A system and method of manufacturing improved wear ring assemblies and positive pressure shaft seals. The wear ring assemblies are made from stacked layers of flat metal. Different shaped component parts of the wear ring assemblies are cut from various sheets of metal. The component parts are stacked to form different sections of the wear ring assemblies. The stacked component parts are welded or otherwise bound together. The resulting sections of the wear ring assemblies are then assembled to form the annular structure of a full wear ring assembly. The result is a wear ring assembly that is both easy and inexpensive to produce.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 28, 2006
    Inventor: David Sayers
  • Shaft seal assembly and its associated method of manufacture
    Publication number: 20050173866
    Abstract: A system and method of manufacturing improved wear ring assemblies and positive pressure shaft seals. The wear ring assemblies are made from stacked layers of flat metal. Different shaped component parts of the wear ring assemblies are cut from various sheets of metal. The component parts are stacked to form different sections of the wear ring assemblies. The stacked component parts are welded or otherwise bound together. The resulting sections of the wear ring assemblies are then assembled to form the annular structure of a full wear ring assembly. The result is a wear ring assembly that is both easy and inexpensive to produce.
    Type: Application
    Filed: March 10, 2003
    Publication date: August 11, 2005
    Inventor: David Sayers