Patents by Inventor Alain D. G. Dumont

Alain D. G. Dumont 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).

  • Detachable device for locking a contactor in its "on" position
    Patent number: 4490702
    Abstract: A coupling piece (12) which is connected to a mobile component (18) of the contactor, has two stepped thrust surfaces (19, 20), each able to cooperate with one of two locking levers, (23, 24), both of which are repelled by an electromagnet (32) when the contactor is turned off. This device is particularly advantageous when the mobile components of the contactors move over different distances.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: December 25, 1984
    Assignee: La Telemecanique Electrique
    Inventors: Alain D. G. Dumont, Rene Fouret