Apparatus and methods of making and using heater apparatus for heating an object having two-dimensional or three-dimensional curvature

摘要: The flexible insulated heater includes a mat surrounded by an insulation jacket. is preferably made of two layers fiberglass reinforced rubber sheets laminated together with resistive wires sandwiched between the sheets. formed curvature and size to fit snugly around peripheral surface pipe that be heated. A jacket thermally insulative material, such as polymer foam, molded over external mat. holds heat generated from escaping radially outward, it protects against burns persons who might touch heater. are configured so has interfacing opposite edges meet each other when mounted on pipe, but combination have sufficient resilient flexibility allow opening separating enough slip whereupon resumes its original inherent cylindrical shape released. Snaps, Velcro™ fastening material straps, or suitable fasteners can used secure heaters if desired, although biased resilience generally itself hold in place. power cord, control cavity, optional overmold provide electric heating elements system daisy-chained ganged insulate network pipes.