Patents by Inventor David C Van Dyken

David C Van Dyken 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: 10202736
    Abstract: The instant invention provides an apparatus and method for renewing and repairing a manhole including the barrel, the plenum, and the chimney, in a single installation to seal off penetration of ground water into the manhole. The manhole repair liner and method utilizes a stretchable liner material which is precut and fused together to loosely approximate the geometry of the manhole. The liner material includes an acid-resistant layer made from an elastic closed-cell polymeric material. Included and fixed to one side or surface of the elastic liner is a felt, or other loosely woven or organized fabric of fibers intended to receive and retain in place a resin, which when cured, fixes the shape of the liner in position.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: February 12, 2019
    Assignee: Plummer's Environmental Services, LLC
    Inventors: Todd Plummer, David C Van Dyken