Universal chimney cap

Details Universal chimney cap Universal chimney cap

2005-07-19

2005-07-19

Joyce, Harold (Department: 3749)

Ventilation

Chimney or stack

Chimneytop or stacktop structure

C110S119000, C454S013000

Reexamination Certificate

active

06918827

ABSTRACT:
A chimney cap and a method for making the same are described. The chimney cap is more consistently and uniformly manufactured, which permits nesting. This is accomplished by forming the cap from single piece of expanded metal to create a substantially square or rectangular cage where each side of the cage has an integral flange that is bent substantially perpendicular to its respective side. The substantially square or rectangular cage is stretched to form a shaped trapezoidal cage, with a top portion of each side of the cage having a longer span that a bottom of portion of each side.

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patent: 23116 (1930-09-01), None
patent: 358167042 (1983-10-01), None

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