Remote control door operating device

A door operating device opening and closing a door in an opening in a wall, said device comprising in combination:

• a first arm having a first and second end, said first end of said first arm pivotally attached to said wall for movement about a first axis,
• a second arm having a first and a second end, said first end of said second arm pivotally attached to said door for movement about a second axis,
• said second end of said first arm pivotally attached to said second end of said first arm,
• electric motor means for drivingly rotating one of said arms in a first direction about one of said first and said second axis,
• electrically operated clutch means for connecting and disconnecting said motor means from engagement with said one of said arms,
• start means,
• door open sensor means for detecting that said door is in an open condition,
• door closed sensor means for detecting that said door is in a closed condition,
• means for detecting an excessive current drawn by said motor, and
• control means connected to said motor means and said clutch means and responsive to said door open sensor means, said door closed sensor means, said means for detecting an excessive current and said start means, for directing electric power to said motor means and said clutch means upon actuation of said start means and for terminating electric power to said motor means and said clutch means and clutch mean upon receipt of a signal from one of said door open sensor means, said door closed sensor means, and said means for detecting an excessive current.

A door operating device for opening and closing a door in an opening in a wall, said device comprising in combination:

• a first arm having a first and a second end, said first end of said first arm pivotally attachable to said wall for movement about a first axis,
• a second arm having a first and a second end, said first end of said second arm pivotally attachable to said door for movement about a second axis,
• said second end of said first arm pivotally attached to said second end of said second arm,
• electric motor means for drivingly rotating one of said arms in a first direction about one of said first and said second axis,
• clutch means for connecting and disconnecting said motor means from engagement with said one of said arms,
• start means,
• door open sensor means for detecting when said door is opened,
• door closed sensor means for detecting when said door is closed,
• an over-center spring for urging said first and second arms out of substantial parallel alignment with each other, and
• control means connected to said motor means and responsive to said door open sensor means, said door closed sensor means and said start means, for directing electric power to said motor means upon actuation of said start means and for terminating electric power to said motor means upon receipt of a signal from one of said door open sensor means, and said door closed sensor means.

A door operating device opening and closing a door in an opening in a wall, said device comprising in combination:

• a first arm having a first and a second end, said first end of said first arm pivotally attached to said wall for movement about a first axis,
• a second arm having a first and a second end, said first end of said second arm pivotally attached to said door for movement about a second axis,
• said second end of said first arm pivotally attached to said second end of said first arm,
• electric motor means for drivingly rotating one of said arms in a first direction about one of said first and said second axis,
• electrically operated clutch means for connecting and disconnecting said motor means from engagement with said one of said arms,
• start means,
• door open sensor means for detecting that said door is in an open condition,
• door closed sensor means for detecting that said door is in a closed condition,
• means for interrupting electric power to said motor means and said clutch means in response to an excessive current drawn by said motor means, and
• control means connected to said motor means and said clutch means and responsive to said door open sensor means, said door closed sensor means, and said start means, for directing electric power to said motor means and said clutch means upon actuation of said start means and for terminating electric power to said motor means in said clutch means upon receipt of a signal from one of said door open sensor means, and said door closed sensor means.

A door operating device for opening and closing a door in an opening in a wall, said device comprising in combination:

• a first arm having a first and a second end, said first end of said first arm pivotally attachable to said wall for movement about a first axis,
• a second arm having a first and a second end, said first end of said second arm pivotally attachable to said door for movement about a second axis,
• said second end of said first arm pivotally attached to said second end of said second arm,
• electric motor means for drivingly rotating one of said arms in a first direction about one of said first and said second axis,
• clutch means for connecting and disconnecting said motor means from engagement with said one of said arms,
• start means,
• angle sensor means positioned around said one of said first and second axis for sensing the angle of said one of said first and second arms,
• switch means responsive to said angle sensor means, and,
• control means connected to said motor means for selectively directing electric power to said motor means, said control means responsive to said start means and said switch means.