Patents by Inventor Douglas H. Baker

Douglas H. Baker 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).

  • Water dam for a fastener
    Patent number: 4342530
    Abstract: A water dam in the form of a cup is secured around the head of a fastener to confine water that leaks pass the fastener to a localized area.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: August 3, 1982
    Assignee: Allis-Chalmers Corporation
    Inventors: Douglas H. Baker, Dennis P. Dry
  • Turbine in-take baffles
    Patent number: 3973869
    Abstract: A hydraulic turbine is disclosed having wicket gate vanes which are rotatable between extreme positions to interrupt and permit the flow of water through a substantially cylindrical water passageway. In order to effectively block the flow of water through the passageway, the outer peripheral surface of the vanes must have a spherical configuration to match the circular cross-section of the cylindrical passageway. However, with this configuration, when the vanes are in an open position, a vee-shaped space is defined between the ends of the vanes and the water passageway. Baffles are provided to fill this space so that debris cannot collect therein.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: August 10, 1976
    Assignee: Allis-Chalmers Corporation
    Inventors: Duane E. Doll, Douglas H. Baker