Patents by Inventor Christine B. Barnes

Christine B. Barnes 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).

  • Voice coil assembly for an electropneumatic converter
    Patent number: 4821760
    Abstract: An electropneumatic converter is provided with a voice coil having a vane directly connected to the coil. The vane and coil assembly is attached to a spring and resiliently supported by the spring for movement relative a nozzle outlet in response to dc input signals applied to the coil.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: April 18, 1989
    Assignee: The Babcock & Wilcox Company
    Inventors: Christine B. Barnes, Thomas E. Martin, Frank E. Nardis
  • Pneumatic servo assembly for an electro-pneumatic converter
    Patent number: 4630631
    Abstract: A pneumatic servo assembly including a back pressure nozzle and an electric motor operating a flat spiral cam variably restricting the nozzle. A nozzle clamp exerts a drag on the cam so that a constant pneumatic output is maintained if an electrical failure occurs.
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: December 23, 1986
    Assignee: The Babcock & Wilcox Company
    Inventor: Christine B. Barnes
  • Pneumatic servo assembly for an electro pneumatic converter
    Patent number: 4610263
    Abstract: A pneumatic servo assembly (20) is provided for an electro-pneumatic control system (10) having closed loop control of a D.C. motor (12) operated from an error signal (56) developed from an electrical set point signal (4) and a pneumatic feedback signal (44). The feedback signal (44) is made compatible by a pressure transducer (26) monitoring the pressure output signal (22) of the pneumatic servo assembly (20) and establishing an electrical signal indicative thereof which is scaled, zeroed, and amplified by an amplifier unit (46).
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: September 9, 1986
    Assignee: The Babcock & Wilcox Company
    Inventor: Christine B. Barnes