Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 14, 2015
Patent Application Number
14225862
Date Filed
March 26, 2014
Patent Citations Received
Patent Primary Examiner
Patent abstract
An automatic pet door for large pets is installed in a hinged door and is actuated by a magnet worn by a pet. Unintended openings of the automatic pet door caused by the Earth's ambient magnetic field when the hinged door is moved are prevented by a system that includes a microelectromechanical systems gyro. A counterweight system allows the use of a relatively small and inexpensive electric motor to actuate the automatic pet door.
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