Patents by Inventor Howard D. Snively

Howard D. Snively 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 refrigeration system having an involute laminated stator for its linear drive motor
    Patent number: 4761960
    Abstract: In a cryogenic split Stirling refrigerator, the compressor is driven by linear drive motors. Each linear drive motor has an armature hermetically sealed by a housing 20. Surrounding the housing is a stator formed from two bodies each housing a drive coil 48 and 49. Each body consists of two components 52-55 formed from involute laminations which have been aligned after the coil has been inserted. Separating the bodies is a magnet 56.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: August 9, 1988
    Assignee: Helix Technology Corporation
    Inventors: Graham J. Higham, Howard D. Snively, Harry G. Nicoll, Gerald R. Pruitt