Ventilation – Chimney or stack – Chimneytop or stacktop structure
Reexamination Certificate
2006-04-11
2006-04-11
Joyce, Harold (Department: 3749)
Ventilation
Chimney or stack
Chimneytop or stacktop structure
C454S018000
Reexamination Certificate
active
07025670
ABSTRACT:
A wind powered rotatable vent includes an annular rotatable louvered panel axially rotatable about a shaft and an impeller disposed in spaced underlying relationship with respect to the rotatable louvered panel and rotatably secured to the shaft. A fixed collar underlies at least a portion of the rotatable louvered panel and a brace which is rotatably secured to the shaft has first arms secured to an upper portion of the rotatable louvered panel and second arms secured to a lower portion thereof. The collar and rotatable louvered panel define a passageway for flow of air therethrough. The rotatable louvered panel is structured to rotate responsive to wind impinging thereon and responsive to air flowing upwardly through the impeller in the passageway.
REFERENCES:
patent: 535276 (1895-03-01), Doerge
patent: 2013244 (1935-09-01), La Vergne
patent: 3066596 (1962-12-01), Gray et al.
patent: 4641571 (1987-02-01), Anderson et al.
patent: 5779539 (1998-07-01), Kolt
patent: 6352473 (2002-03-01), Clark
patent: 6582291 (2003-06-01), Clark
patent: 6189 (1905-01-01), None
patent: 236001 (1925-07-01), None
Eckert Seamans Cherin & Mellott , LLC
Joyce Harold
Silverman Arnold B.
Solar Group, Inc.
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