Patent ID: 6338693
Filing Date: 2002-01-15
Classification: E05F,E05Y,Y10T

Abstract:
A pivot-hung door drive system with an electro-mechanical or electro-hydraulic 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 sensor, all operatively interconnected together; said at least one memory being configured and disposed to store at least one characteristic of operation of said drive system; said at least one microprocessor being configured and disposed to control said drive system; said at least one sensor being configured and disposed to indicate at least one operating status of a connected door panel to said at least one microprocessor; a motor arrangement configured and disposed to operatively drive a door panel; a drive arrangement connected to said motor arrangement, said drive arrangement being configured and disposed to be driven by said motor arrangement; a transmission arrangement connected to said drive arrangement, said transmission arrangement being configured and disposed to be driven by said drive arrangement; a linkage configured and disposed to move a door panel, said linkage being connected to said transmission arrangement and said linkage being configured and disposed 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; and said transmission arrangement comprising at least one gear wheel being configured and disposed to change 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.