Patents by Inventor Daniel Dufrene

Daniel Dufrene 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).

  • Electromagnetic actuating device incorporated in a remote control unit
    Patent number: 5276420
    Abstract: An electromagnetic actuator comprises a coil associated with a magnetic circuit having a first series of polar parts to drive a rotor, and a second series of polar parts cooperating with a pivoting blade. A return spring causes movement of the blade to a separated position. A latch is rendered active to lock the blade in the separated position during rotation of the rotor, and inactive to unlock the blade enabling its electromagnetic attraction against the polar face, and stopping of the rotor. The actuator has an operating mode either as motor or as electromagnet depending on the position of the blade.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: January 4, 1994
    Assignee: Merlin Gerin
    Inventors: Daniel Dufrene, Alain Frolla, Olivier Dardare