Patent ID: 9431927
Filing Date: 2016-08-30
CPC Classification: E05B,E05D,E06B,H01L,H02N

Claim Text:
1. An electrical generation system for a doorway including a door, the system comprising: a lock mechanism movable between an engaged position and a disengaged position to allow the door to move between a closed position and an open position; a cam coupled to the door; and a piezo-electric generator coupled to the cam, wherein the cam is rotatable with respect to the piezo-electric generator, wherein the piezo-electric generator is operable to produce an electrical current in response to rotation of the cam with respect to the piezo-electric generator, and wherein the electrical current has a frequency that is greater than the number of revolutions made by the cam with respect to the piezo-electric generator, wherein the cam includes a first surface and a plurality of bumps positioned on the surface, each of the bumps cooperating with an adjacent bump to define a recess therebetween, and wherein the piezo-electric generator includes a roller that engages the first surface and the bumps to move in a cyclic fashion in response to movement of the cam with respect to the piezo-electric generator.