Heat reclaiming flue pipe

Claim 1

A heat reclaiming flue pipe comprising: a cylindrically shaped sheet metal flue pipe section of standard diameter and length, said sheet metal flue pipe section being comprised of a substantially flat piece of sheet metal rolled into cylindrical form and including means adjacent the edges of said piece for maintaining the same in cylindrical form; a first end of said flue pipe section having a diameter substantially equal to the major portion of said section and the second end thereof being of reduced diameter adapted to fit within the first end of a similarly constructed flue pipe section; a plurality of substantially circular holes formed in said flat piece of sheet metal, said holes being arranged such that for each hole there is a complementary hole in axial alignment therewith but located one hundred eighty degrees therefrom, and a plurality of cylindrically shaped metal pipes, each of said metal pipes being located between one of said holes and one of said complementary holes and being in substantial alignment with the others of said pipes, said metal pipes being substantially hollow and being open at each end but otherwise having solid cylindrical walls with no openings therein, the outer diameter of each of said pipes being substantially equal to the diameter of said holes so that said pipes may be force fit into said holes and securely held by said sheet metal around said holes, the length of said pipes being greater than the diameter of said flue pipe section so that the ends of said pipes extend outside of said flue pipe section, whereby hot gases and smoke passing through the flue pipe heats the metal pipes which in turn heats the air within the metal pipes which passes therefrom to heat the room wherein the flue is located.