1983-08-22
1987-01-27
Joyce, Harold
98 67, 98 78, 98 81, F23L 1712
Patent
active
046387277
ABSTRACT:
A device for clamping in position to a chimney outlet, a chimney cowl having a vertically-spaced series of three annular vanes centered on a common vertical axis, the device comprising a clamping ring formed by an annular surround spaced below the lowermost vane and being fixed to the lowermost vane. The surround has provided therein tapped bores engaged by screw-threaded elements for urging inwardly against the sides of a chimney outlet.
REFERENCES:
patent: 417415 (1889-12-01), Esperson
patent: 1623659 (1927-04-01), Comerford
patent: 2830526 (1958-04-01), Breidert
patent: 4335648 (1982-06-01), Mitchell
"Aerocowl", Aerocowl Marketing LTD., Belfast 731611/3.
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