Patents Represented by Attorney Kenneth R. Graham
  • Patent number: 6891479
    Abstract: A remotely controllable door operator apparatus is mountable to a doorframe structure and a movable door to control door movement between a closed position and an opened position. The operator apparatus includes a motor assembly, a linkage device, a slip clutch assembly, and a controller unit. The motor assembly has an output shaft, and the motor is mountable to one of the door and the door frame structure. The slip clutch assembly is coupled between the output shaft and the linkage device to transfer torque therebetween, and can slip to enable manual and remote operation of the door. The controller unit is coupled to the motor assembly to activate the operator apparatus to close the door in manual operation, and to open and to close the door in response to at least one remote signal. A method of using the remotely controllable automatic door operator and closer is also disclosed.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: May 10, 2005
    Inventor: Jon E. Eccleston