Patents Represented by Attorney C. Douglas McDonald

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  • Apparatus for reducing energy consumption within an unoccupied room
    Patent number: 7784677
    Abstract: An apparatus for managing energy consumption in an unoccupied room having a keycard actuated card and a plurality of appliance control units interposed between electrical appliances and their power sources such that the card reader wirelessly transmits signals to the appliance control units upon insertion and removal of the keycard and the appliance control units energize the appliances only when the keycard is present in the card reader.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 31, 2010
    Assignee: Smart Light Tech, LLC
    Inventors: Thierry Riahi, Lawrence Egle, Aaron Dickey
  • Wind driven apparatus for power generation
    Patent number: 4251040
    Abstract: Wind driven apparatus for the production of power at a ground location includes an aerodynamic lift generating vehicle capable of maintaining a stable airborne orientation, a tether linking the vehicle to a ground location, mechanical power generating equipment carried by the vehicle and responsive to relative motion between the air and the vehicle, apparatus for converting the generated power to reciprocating motion and structure for transmitting the reciprocating motion along the tether to the ground.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: February 17, 1981
    Inventor: Miles L. Loyd
  • Manually operated press
    Patent number: 3988981
    Abstract: A manually operated press comprising a base, a movable platen opposed to the base and a frame attached to the base and carrying a movable platen includes a novel platen supporting and actuating structure which provides for adjustment of the pressure to be exerted by the press upon an object placed between the base and the platen and for adjustment to compensate for the thickness of the object to be placed between the platen and the base.
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: November 2, 1976
    Inventor: Charles Douglas McDonald
  • Crossbow stock
    Patent number: D590907
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: April 21, 2009
    Assignee: Barnett Outdoors, LLC
    Inventor: David A. Barnett