Patent ID: 7542680
Filing Date: 2009-06-02
Classification: B66C

Abstract:
1. A control system for remotely operating an apparatus upon loss of main power, the control system comprising: an auxiliary power source to provide power to the apparatus; a first light-emitting source positioned remote of the apparatus; a first photoelectric sensor positioned proximate the apparatus and interconnected with the apparatus and the auxiliary power source, wherein the first photoelectric sensor selectively receives light from the first light-emitting source and the first photoelectric sensor enables power to flow from the auxiliary power source to the apparatus; a second light-emitting source positioned remote of the apparatus; and at least one second photoelectric sensor positioned proximate the apparatus and interconnected with a component of the apparatus and the auxiliary power source, wherein the second photoelectric sensor selectively receives light from the second light-emitting source and enables power to flow from the auxiliary power source to the respective component to activate movement of the component.