Air duct made from sheet metal stamping
OwnerPatrick L. Beaudininventor
Life of this patent
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Abstract
A sheet metal stamping forming an air duct for use in heating and cooling systems and the like. The stamping has a generally rectangular shaped body portion and a protruding tongue portion extending from at least one side thereof. The stamping is foldable along its end edges and the tongue portion whereby two such stampings may be cooperatively engageable with a pair of side panels to form an air duct section having an inlet, outlet and a diverter or secondary outlet formed by the tongue portions. The tongue portions are adapted for connection to standard conventional take-off fittings.
Claims4
A sheet metal duct section having an inlet and outlet comprising in combination:
- a prestamped upper and lower spaced panel interconnected by spaced side panels, at least one side panel being shorter in length than said upper and lower panels and defining an opening through which at least a portion of flow through said inlet is diverted, said upper and lower panels having end edges and a central body portion extending the length and width of said duct section from said inlet to said outlet and formed tongue portions extending laterally beyond said shortened side, said stampings being folded along their end edges and cooperatively engaged with said side panels to form the air duct section, and said tongue portions cooperatively forming a diverter outlet to divert flow through said inlet from said outlet, said duct having a diminishing cross section from said inlet to said outlet.
Dependencies are inferred from the claim text.