Patents by Inventor Daniel Birchak

Daniel Birchak 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).

  • Seal assembly for hydraulic pump output shaft
    Publication number: 20060188381
    Abstract: A seal assembly for a hydraulic pump is provided. The assembly includes a spacer ring, a rotor having a first side and a second side, the first side engaging the spacer ring, and a spring-loaded face seal having a face in contact with the rotor second side, where the face seal is configured to supply a force against the rotor sufficient to cause the face seal face to sealingly engage the rotor second side.
    Type: Application
    Filed: May 6, 2005
    Publication date: August 24, 2006
    Inventors: Mingfong Hwang, Cynthia Byers, William Ryan, Daniel Birchak