Patent ID: 9748871
Date: 2017-08-29
CPC Classifications: E05B,E05D,E06B,H01L,H02N

Claim:
1. An electrical generation system for a door positioned in a doorway, the system comprising: a hinge arranged to support the door for rotational movement with respect to the doorway between a closed position and an open position; a cam that is one of coupled to the door for movement with the door, and fixed with respect to the doorway; and a piezo-electric generator that is the other of coupled to the door for movement with the door, and fixed with respect to the doorway, the piezo-electric generator and the cam cooperating such that rotation of the cam with respect to the piezo-electric generator is operable to produce an electrical current in response to rotation of the door, 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.