Patents by Inventor John C. Tamulis

John C. Tamulis 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).

  • Low energy magnetic actuator
    Patent number: 4224589
    Abstract: Magnetic actuator apparatus in which the armature is held in a restrained position on a magnetic core by magnetic flux whose density is cyclically varied in time, and the armature is selectively released by a bucking coil that is energized only when the armature retention flux is at low holding value. The flux source is a permanent magnet that is reciprocated or rotated to vary the armature retaining force.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: September 23, 1980
    Assignee: International Business Machines Corporation
    Inventor: John C. Tamulis