Patents by Inventor Thomas K. Swanson

Thomas K. Swanson 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).

  • Linear electromagnetic actuator
    Patent number: 4855702
    Abstract: An electromagnetic actuator includes a frusto-conical projection having a central opening formed therein. A winding is contained in a housing surrounding the projection which encompasses the projection. A shaft extends through a central opening in the projection and carries an armature having a reciprocally configured frusto-conical surface. Excitation of the winding causes linear movement of the shaft on bearings contained within the housing.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: August 8, 1989
    Assignee: Barber-Colman Company
    Inventors: Thomas K. Swanson, Elwood J. Meyers