Patent ID: 8375519
Filing Date: 2013-02-19
Classification: E05F,E05Y,Y10T

Abstract:
1. In a signal activated door hinge for remotely closing a door by a low voltage electric signal, said signal activated door hinge comprising: (a) an internal mechanical activation mechanism, (b) a left hinge plate connected to said internal mechanical activation mechanism and affixed to a stationary door frame; (c) a right hinge plate connected to said internal mechanical activation mechanism and affixed to a movable door; (d) a cylindrical cover tube surrounding and connected to said internal mechanical activation mechanism; and (e) external low voltage electrical wiring attached to said cover tube and further connected to said internal mechanical activation mechanism; whereby an external low voltage electrical charge applied to said external low voltage electrical wiring maintains said internal mechanical activation mechanism in a readiness mode, and a subsequent low voltage electric activation signal applied to said external low voltage electrical wiring interrupts said electrical charge, thereby converting said readiness mode to an activation mode whereby said internal mechanical activation mechanism moves said right hinge plate to close said movable door: The internal mechanical activation mechanism comprising: