Patents by Inventor Palmer M. Maxwell

Palmer M. Maxwell 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).

  • Proximity actuated magnetic button-contactor assembly for switches
    Patent number: 3950719
    Abstract: A miniature type hermetically sealed electrical switch that provides snap-action contact reversal with magnetic contact holding. The only moving part of the switch is a mechanically unattached permanent magnet button-contactor member that reciprocally moves under the influence of an external permanent magnet actuator member to cause reversal snap-action contact of a previous magnetically-maintained contact condition.
    Type: Grant
    Filed: August 21, 1974
    Date of Patent: April 13, 1976
    Inventor: Palmer M. Maxwell