Method of making a waste flue heat recovery device

Details Method of making a waste flue heat recovery device Method of making a waste flue heat recovery device

1975-11-11

1977-08-23

Sprague, Kenneth W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

122 20B, F22D 102, B21D 5302

Patent

active

040430146

ABSTRACT:
A novel and easy method of construction and assembly which enables a tubular coil to be inserted in an open flue pipe so the flue pipe can be joined; water passing through the coil will recover waste flue heat from furnaces and boilers.

REFERENCES:
patent: 685835 (1901-11-01), Groh
patent: 1065837 (1913-06-01), Reichard
patent: 1934021 (1933-11-01), Wafter
patent: 2143287 (1939-01-01), Smith
patent: 2252046 (1941-08-01), Steele
patent: 3083447 (1963-04-01), Andersen et al.
patent: 3566502 (1971-03-01), Pasqualini
patent: 3639963 (1972-02-01), Maher

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