Sealing arrangement for chimneys with an annular pressurized spa

Details Sealing arrangement for chimneys with an annular pressurized spa Sealing arrangement for chimneys with an annular pressurized spa

1978-03-23

1980-03-04

Yuen, Henry C.

Furnaces

With fuel treatment means

Preliminary refuse treatment means

110184, 126307R, F23L 1702

Patent

active

041910990

ABSTRACT:
A chimney having concentric tubular walls defining an annular pressurized space includes a sealing arrangement having a flexible boot with one edge connected to one of the walls. The top hood or cover supported on the inner wall of the chimney includes a lower annular surface which extends over the outer wall. Spring biased support members supported on the outer walls are connected to an annular seal ring to which a second flexible edge of the boot is connected and supports the same in sealing relation against the lower annular surface of the hood to seal the annular space and accomodate relative movement of the walls resulting from natural elements.

REFERENCES:
patent: 1759830 (1930-05-01), Blanchard
patent: 3368506 (1968-02-01), Lawrence
patent: 3537411 (1970-11-01), Roy
patent: 3669042 (1972-06-01), Lawrence
patent: 3727566 (1973-04-01), Roy
patent: 3780639 (1973-12-01), Wood
patent: 4111107 (1978-09-01), Engleke

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