Heating apparatus for installation on rooftop end of sewer...

Details Heating apparatus for installation on rooftop end of sewer... Heating apparatus for installation on rooftop end of sewer...

E - Fixed Constructions

03

C

E03C 1/122 (2006.01) E03B 7/12 (2006.01) E03F 5/08 (2006.01)

Patent

CA 2656973

A heating apparatus for installation on a top end of a sewer vent pipe features a body having an internal passage with a stop defined at a position therealong between open top and bottom ends. A cross-sectional area of the internal passage is less at this position than at the open bottom end, which is sized for snug receipt of the top end of the sewer vent pipe. The cross-sectional area of the internal passage, at all positions therealong, is no less than a cross sectional area bound by an inner diameter of the sewer vent pipe. The heater body can be seated atop the vent pipe with no external fasteners and does not restrict the vent pipe opening. A heating element loops around the interior passage proximate the open top and depends downward toward the open bottom inside the vent pipe, heating from both outside and inside the pipe.

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