Patents by Inventor John L. Ucker

John L. Ucker 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).

  • Helium charged hydraulic accumulators
    Patent number: 4819697
    Abstract: A helium charged accumulator is disclosed for use in hydraulic fluid pressure systems. The size of the accumulator is optimized for particular operating conditions of specific applications of the hydraulic systems by means of a formula. The formula has, as its terms, the volume of the hydraulic fluid required to power a given device, the compressibility factor of the particular gas used and the temperature and pressure of the gas at the beginning of, during, and at the end of the operation cycle of the accumulator.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: April 11, 1989
    Assignee: Rockwell International Corporation
    Inventors: James Randa, John L. Ucker