Patent ID: 6262548
Filing Date: 2001-07-17
Classification: E05F,E05Y,Y10T

Abstract:
A pivot-hung door drive system with an electro-mechanical drive device that is configured to supply the opening and closing moment required to open and close a connected pivot-hung door panel, said drive system, comprising:an electronic control system comprising at least one memory, at least one microprocessor, and at least one senor, all operatively interconnected together;said at least one memory being configured and connected to store at least one characteristic of operation of said drive system;said at least one microprocessor being connected to said drive system and configured to control said drive system;said at least one senor being configured to indicate at least one operating status of a connected door panel to said at least one microprocessor;a motor arrangement being operatively connectable to a door panel to drive a door panel;a drive arrangement connected to said motor arrangement, said drive arrangement being configured to be driven by said motor arrangement;a transmission arrangement connected to said drive arrangement, said transmission arrangement being configured to be driven by said drive arrangement;a linkage configured to move a door panel, said linkage being connected to said transmission arrangement and said linkage being configured to be driven by said transmission arrangement;said transmission arrangement comprising an input arrangement and an output arrangement;said input arrangement being connected to said drive arrangement;said output arrangement being connected to said linkage; andsaid transmission arrangement comprising means of changing the relationship between the movement of said input arrangement and said output arrangement dependent upon the position and angle of rotation of one of said input arrangement and said output arrangement to provide differences in the opening and closing moments of said output arrangement over rotation of a door panel dependent upon the position of said output arrangement and the angle of rotation of said output arrangement to minimize force provided by said drive arrangement to close a door.