Patents by Inventor Raymond Henry LaChance

Raymond Henry LaChance 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).

  • Electric motor with tachometer signal generator
    Patent number: 5717268
    Abstract: A permanent magnet electric motor including a rotor having an annular arrangement of field magnets for rotation around an axis relative to a stator. An annular FG magnet arrangement affixed to an end of the rotor cooperates with an adjacent FG coil to produce a signal indicative of the rotor speed. A shunt washer of magnetically permeable material is interposed between the field magnet arrangement and the FG magnet arrangement.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: February 10, 1998
    Assignee: Philips Electronics North America Corp.
    Inventors: Mark Emery Carrier, Raymond Henry LaChance