AUTOMATIC DOOR OPENER
First Claim
1. A door opener for opening a door having an external surface comprising:
- a screw mounted for rotary motion and a carriage mounted on the screw such that rotation of the screw causes motion of the carriage along the screw;
a motor for rotating the screw;
an actuator arm having a first end and a second end, said actuator arm being operatively connected to the carriage such that movement of the carriage causes the actuator arm to move between a retracted position where the door is closed and an extended position where the door is open, said first end of the actuator arm being in contact with but not connected to the external surface of the door such that the first end of the actuator arm rides over the external surface of the door.
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Accused Products
Abstract
A door opener for opening a door having an external surface comprises a screw mounted for rotary motion and a carriage mounted on the screw such that rotation of the screw causes motion of the carriage along the screw. A motor rotates the screw. An actuator arm has a first end and a second end, where the actuator arm is operatively connected to the carriage such that movement of the carriage causes the actuator arm to move between a retracted position where the door is closed and an extended position where the door is open. The first end of the actuator arm is in contact with but not connected to the external surface of the door such that the first end of the actuator arm rides over the external surface of the door.
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Citations
20 Claims
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1. A door opener for opening a door having an external surface comprising:
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a screw mounted for rotary motion and a carriage mounted on the screw such that rotation of the screw causes motion of the carriage along the screw; a motor for rotating the screw; an actuator arm having a first end and a second end, said actuator arm being operatively connected to the carriage such that movement of the carriage causes the actuator arm to move between a retracted position where the door is closed and an extended position where the door is open, said first end of the actuator arm being in contact with but not connected to the external surface of the door such that the first end of the actuator arm rides over the external surface of the door. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A door opener and a door comprising:
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a door having an external surface; a door opener mounted adjacent the door comprising a screw mounted for rotary motion and a carriage mounted on the screw such that rotation of the screw causes motion of the carriage along the screw;
a motor for rotating the screw;
an actuator arm having a first end and a second end operatively connected to the carriage such that movement of the screw causes the actuator arm to move between a retracted position where the door is closed and an extended position where the door is open, said first end of the actuator arm being in contact with but not connected to the external surface of the door such that the first end of the actuator arm rides over the external surface of the door. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification