Roof structure

Details Roof structure Roof structure

1988-10-17

1990-05-29

Yuen, Henry C.

Heating

Heating or heat retaining work chamber structure

432250, 432251, 432252, 110331, F27D 100

Patent

active

049291793

ABSTRACT:
A roof structure has a plurality of layers of heat resistant material, at least a first of the layers including a first brick layer, at least a second of the layers above the first of the layers including a heat resistant compound, and the heat resistant compound being unshaped when initially installed above the first of the layers. A method of forming a roof structure in an opening between side walls of a chamber includes the steps of installing at least one layer of bricks in the opening directly above the chamber, applying at least one layer of a first concrete in an unshaped form in the opening over the at least one layer of the bricks, tamping the at least one layer of the first concrete at at least a first predetermined temperature, and allowing the at least one layer of the first concrete to harden.

REFERENCES:
patent: 1132028 (1915-03-01), O'Donnell
patent: 2125192 (1938-07-01), Morlock
patent: 2137040 (1937-08-01), Woodson
patent: 2154414 (1938-03-01), Teeters
patent: 2236920 (1959-02-01), Robertson
patent: 3489401 (1968-06-01), Merdian et al.
patent: 4081236 (1978-03-01), Corbett
patent: 4213753 (1980-07-01), Negroni et al.
patent: 4325694 (1982-04-01), Bergman
patent: 4529178 (1985-07-01), Hosbein et al.
patent: 4666404 (1987-05-01), Suey

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