Patent ID: 7438498

Claim:
A security system for sewage, aqueduct, telephone and energy system manhole cover comprising: an electromechanical cover, and an electromagnetic crane to be disposed adjacent the electromechanical cover, the electromagnetic crane providing means for enabling the crane to open, close, lift or loosen the electromechanical cover, the enabling means of the electromagnetic crane including a handle, an emitting coil, a battery for providing power to the other elements, an electronic card and control panel, and within a waterproof space at least partially enclosed by the electromechanical cover are disposed a receiving coil, an electronic card for controlling the opening and closing of a mechanical cover locking pin, and two motors that move the mechanical cover locking pin, the mechanical cover locking pin having a bellows and being connected to the electronic card, the battery and the emitting coil being capable of transferring electromagnetic energy from the emitting coil to the receiving coil, and thereby producing sufficient electricity to energize the electronic card and the two electric motors to operate the mechanical pin and thereby to open or lock the electromechanical cover.