Patents by Inventor Matthew G. Chalmers

Matthew G. Chalmers 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).

  • Variable flow cryostat with dual orifice
    Patent number: 4237699
    Abstract: A cryostat for producing an inventory of a liquefied working fluid by expansion of the working fluid through an orifice, the cryostat including means to rapidly cool the cryostat to operating temperature and to maintain fluid flow at low temperature and high working fluid pressure to maintain maximum heat transfer between the working fluid and an object being cooled by the cryostat.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: December 9, 1980
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ralph C. Longsworth, Matthew G. Chalmers