Patents by Inventor Kenneth E. Day

Kenneth E. Day 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).

  • Reseat relief valve
    Patent number: 4432389
    Abstract: A relief valve with a low hysteresis closing curve with a fixed seat and a spring-biased poppet which is guided for longitudinal movement by an axial guide sleeve and aligns with its seat by pivoting about a fixed point through a small angle of rotation.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: February 21, 1984
    Assignee: The Cessna Aircraft Company
    Inventors: Alan D. Jackson, Kenneth E. Day