Method for controlling opening/closing operation of automatic door in its accidental condition
Patent 4775823 Issued on October 4, 1988. Estimated Expiration Date: 
December 29, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 29, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3891909 Apparatus for automatically controlling the operation of automatic door Control apparatus for an automatic door with a minimum error in a detected door position Multiposition controller Patent #: 4565954 InventorsAssigneeApplicationNo. 06/947394 filed on 12/29/1986US Classes:318/266, At limit-of-travel of motor or driven device318/272, With automatic starting and/or stopping318/277With automatic starting and/or stoppingExaminersPrimary: Ro, BentsuAttorney, Agent or FirmInternational ClassesE05F 15/00 (20060101)E05F 15/14 (20060101) G05B 19/04 (20060101) Foreign Application Priority Data1985-12-28 JPAbstractAccording to a method for controlling an automatic door of the present invention, even when an accidental condition occurs due to some obstacle clogging a traveling lane of the door, the door can move at a high speed to its deceleration point so as to immediately enable a man to go through the door opening, while the door is prevented from colliding at a high speed against the obstacle repeatedly to make it possible to increase both the durability and safety of the door.Field of SearchMotor-reversingWith running-speed control With automatic starting and/or stopping Stopping upon predetermined movement of or position of motor or driven device At limit-of-travel of motor or driven device MOTOR-REVERSING Periodic- or intermittent-reversing In response to movement or position (e.g., limit of travel) of motor or driven device Movement or position of motor or driven device Speed or rate-of-movement Movement, position, or limit-of-travel Plural sensing means for determining plural positions or plural limits-of travel Limit-of-travel control means Magnitude of movement or revolutions With automatic starting and/or stopping | |
