Patent ID: 6560926
Filing Date: 2003-05-13
Classification: E06B

Abstract:
A remotely controlled pet door unit for mounting in a structure, which comprises:(a) an opening mechanism having a threaded shaft and a motor having a drive shaft connected to the threaded shaft wherein the drive shaft of the motor is coaxial with the threaded shaft; (b) a door having a connection means for movably connecting the door to the threaded shaft for movement of the door in a vertical direction only between an open and a closed position along a length of the threaded shaft wherein the door is positioned in the open position so as to open an opening in the unit and the closed position so as to close the opening in the unit; (c) a control system for activating the opening mechanism to move the door, the control system having a receiver electrically connected to the opening mechanism and a portable transmitter spaced apart from the opening in the unit and configured to be selectively operated by a person wherein in response to a signal from the transmitter, the receiver activates the opening mechanism to move the door; and (d) detectors connected to the opening mechanism to prevent the door from moving into the closed position when the detectors detect an object adjacent the door.