Patents by Inventor Roy B. Hasselquist

Roy B. Hasselquist 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).

  • Cryogenic cooling system for airborne use
    Patent number: 5365746
    Abstract: An airborne cryogenic cooling system in which a first cryogenic material located within an on-board container is cooled to the solid state prior to launch a remotely located second cryogen conduited to the container. Immediately prior to becoming airborne connection is broken to the second cryogen and on-board cooling is achieved by venting the container to space environment causing sublimation of the solid first cryogenic, or, alternatively, the container may be left sealed and cooling results from triple-point transition of the solid cryogen.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: November 22, 1994
    Assignee: Hughes Aircraft Company
    Inventors: H. Burt Warner, Matthew M. Skertic, Roy B. Hasselquist, Joseph L. Hlava