Patent ID: 9297193
Filing Date: 2016-03-29
CPC Classification: E05D,E05F,E05Y

Claim Text:
1. A method of urging a door into the open position comprising: a) providing a door frame comprising a plurality of sides and a door opening located between the plurality of sides; b) providing a door comprising a plurality of sides, the door configured to pivot along a pivot axis from a closed position in which the door covers the door opening to an open position in which the door does not cover the door opening; c) providing a door hinge comprising a door plate attached to a side of the door, a frame plate attached to a side of the frame adjacent to the door plate when the door is in the closed position, a pivot pin aperture located between the door plate and the frame plate, and a pivot pin removably inserted through the pivot pin aperture, the pivot pin and pivot pin aperture generally parallel to the pivot axis; d) removing the pivot pin from the pivot pin aperture; e) providing a torsion spring comprising a proximal leg comprising a proximal segment and a distal segment, a distal leg comprising a proximal segment and a distal segment, and a coil located between the proximal segment of the distal leg and the distal segment of the proximal leg, the coil comprising a plurality of runs, the plurality of runs creating an aperture, the proximal segment of the proximal leg forming approximately a 90 degree angle with the respect to the distal segment of the proximal leg, the distal segment of the distal leg forming approximately a 90 degree angle with respect to the proximal segment of the distal leg, the torsion spring having a relaxed state and a compressed state; f) inserting the pivot pin through the aperture created by the plurality of runs and into the pivot pin aperture; and g) forcing the distal segment of the distal leg into the door adjacent to the door plate and forcing the proximal segment of the proximal leg into the door frame adjacent to the frame plate.