Preheating insert for heavy wall pipe

Details Preheating insert for heavy wall pipe Preheating insert for heavy wall pipe

1982-04-08

1985-03-26

Yuen, Henry C.

Heating

Inserted emitter type of hollow article interior heater

166 58, 432225, 432241, 228241, F24J 300

Patent

active

045070822

ABSTRACT:
A preheating insert is disclosed. The preferred and illustrated embodiment incorporates an encircling bottom support having a centralized hollow tube. It is made of a frangible material to be easily broken should it fall into the pipe. It supports a hollow, cylindrical, combustible heating element. The heating element is made of thermite as an example. It includes a top located deflector plate to deflect hot gases flowing upwardly from combustion against the wall of a pipe to be heated. The apparatus is concentrically located within the pipe in the vicinity of the pipe section to be heated.

REFERENCES:
patent: 896070 (1908-08-01), Williams
patent: 1544015 (1925-06-01), Lamy
patent: 2286075 (1942-06-01), Evans
patent: 2569956 (1951-10-01), Schiltkrecht
patent: 2650539 (1953-09-01), Greene
patent: 4001152 (1977-01-01), Leonhardt

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