Patents by Inventor Richard C. Riedy

Richard C. Riedy 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).

  • Patent number: 4538416
    Abstract: A method and apparatus for producing refrigeration without loss of refrigeration or introduction of magnetic disturbance when using a displacer-expander type cryogenic refrigerator pneumatically actuated by a rotary valve coupled directly to a motor, the displacer-expander, rotary valve and motor being a single unit, by removing the motor from the unit and driving the valve by means of a flexible shaft. The flexible shaft can be disposed within a fluid conduit used to deliver high-pressure fluid to said refrigerator.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: September 3, 1985
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Richard C. Riedy