Heating structure

Claim 1

A HEATING STRUCTURE FOR EMBEDDING IN PAVEMENT AND THE LIKE, WHERE THE STRUCTURE ENCOUNTERS WATER AND MOISTURE AND WHICH IS SUBJECTED TO ABUSE AND STRAIN DURING INSTALLATION AND USE, SAID STRUCTURE COMPRISING A MESH OF FIBERGLASS MATERIAL OF OPEN TYPE CONSTRUCTION HAVING LONGITUDINALLY AND TRANSVERSELY ARRANGED STRANDS BETWEEN WHICH THE PAVING MATERIAL WILL READILY PASS, AN ELECTRICAL HEATING WIRE SECURED TO SUCH MESH IN A SINUOUS PATH, SAID HEATING WIRE HAVING AN ELECTRICAL RESISTANCE WIRE, AN INNER INSULATING LAYER OF PLASTIC MATERIAL ON SAID WIRE, A BRAIDED WIRE FORMING A PROTECTIVE SHIELD AND AN ELECTRIC GROUND LAYER AROUND SAID INNER INSULATING LAYER EXTENDING SUBSTANTIALLY THE FULL LENGTH THEREOF, AND AN OUTER INSULATING LAYER OF THERMOPLASTIC MATERIAL AROUND SAID BRAIDED WIRE, SAID OUTER LAYER BEING RELATIVELY THICK AND EMBRACING THE STRANDS ENGAGED THEREBY AND FORMING BOND THEREWITH SECURING SAID HEATING WIRE TO SAID MESH CARRIER.