Patent ID: 7832057
Filing Date: 2010-11-16
Classification: E05D,E05Y,Y10T

Abstract:
1. A hinge comprising: a first leaf; a second leaf; a third leaf; and a lift hub hinge, the first leaf pivotally coupled to the second leaf, and the second leaf pivotally coupled to the third leaf, the lift hub hinge coupled to the third leaf, the first leaf comprising a first leaf first end, a first leaf second end opposite the first leaf first end, a first leaf first side, and a first leaf second side opposite the first leaf first side, a plurality of first leaf knuckles depending from the first leaf second side adjacent the first leaf second end, the first leaf knuckles have a generally cylindrical shape including a bore therethrough having an axis substantially parallel to the first leaf second end; the second leaf comprising a second leaf first end, a second leaf second end opposite the second leaf first end, a second leaf first side, a second leaf second side opposite the second leaf first side, a second leaf first edge, and a second leaf second edge opposite the second leaf first edge, a plurality of spaced-apart second leaf first knuckles depend from the second leaf first side adjacent the second leaf first end defining one or more second leaf notches therebetween, the second leaf first knuckles having a generally cylindrical shape, each with a bore therethrough having an axis substantially coaxial and substantially parallel to the second leaf first end, the first leaf knuckles of the first leaf operable to be interleaved within the second notches of the second leaf with the axes of the bores in substantially coaxial alignment therewith; a first pivot pin extending through the respective bores pivotally coupling the first leaf with the second leaf, a plurality of second leaf second knuckles depending from the second leaf second side and adjacent to the second leaf second end, the second leaf second knuckles having a generally cylindrical shape with a bore therethrough having an axis substantially parallel with the second leaf second end, the second leaf second knuckles of the second leaf operable to be interleaved within one or more third leaf notches of the third leaf with the axes of the bores in substantially coaxial alignment; the third leaf comprising a third leaf first end, a third leaf second end opposite the third leaf first end, a third leaf first side, a third leaf second side opposite the third leaf first side, a third leaf first edge, and a third leaf second edge opposite the third leaf first edge, a plurality of spaced-apart third leaf first knuckles depend from the third leaf first side adjacent the third leaf first end defining one or more third leaf notches therebetween, the third leaf first knuckles having a generally cylindrical shape, each with a bore therethrough having an axis substantially coaxial and substantially parallel to the third leaf first end, the second leaf knuckles of the second leaf operable to be interleaved within the third leaf notches of the third leaf with the axes of the bores in substantially coaxial alignment therewith, a second pivot pin extending through the respective bores pivotally coupling the second leaf with the third leaf, the lift hub hinge coupled to the third leaf about the second end, the lift hub hinge operable to provide rotation about an axis that is orthogonal to the pivot axes of pivot pins, the hinge further comprising a first gear; a second gear; and a third gear, the first gear pivotally coupled with the second pivot pin, the first gear rigidly coupled to the third leaf, the third gear pivotally coupled with the first pivot pin, the third gear rigidly coupled to the first leaf, the second gear in operative engagement with the first gear and the third gear such that when the first gear rotates, the third gear rotates in the same direction, and wherein the first leaf is moved away from the second leaf, the first gear drives the second gear which drives the third gear so as to move the third leaf away from the second leaf.