Ventilation – Having inlet airway – Including specific air distributor
Reexamination Certificate
2007-06-29
2011-12-13
McAllister, Steve (Department: 3749)
Ventilation
Having inlet airway
Including specific air distributor
C454S310000
Reexamination Certificate
active
08075375
ABSTRACT:
A method and apparatus for balancing an HVAC system. The method involves using a plate which is circular in shape and has four inner cut-out portions which are capable of being manually removed by an operating engineer. To reduce flow to a minimum, all four rings are left on the plate. To allow a progressively greater amount of air flow, more rings are removed from the circular plate. Such enables the equalization of the various rooms in an HVAC system without the addition of costly upstream dampers. The circular plate is attached to a duct via four small protruding ear elements.
REFERENCES:
patent: 3063356 (1962-11-01), Fitt
patent: 3087407 (1963-04-01), Averill et al.
patent: 5207615 (1993-05-01), Edmisten
Helena Kosanovic
McAllister Steve
O'Connor Daniel
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