Low cost replaceable type sound dampening unit for vacuum cleaning machine

A physical shape-conformable, disposable, self-sustaining sound dampening unit adapted to attach to the air exhaust of a pair of electric motors to dampen the noise produced by the same, which comprises: a body member formed of a thin imperforate film outer layer and a polymer foam inner layer linin...

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Bibliographische Detailangaben
Hauptverfasser:	WILLIAMS, WILLIAM H, JACOBS, PAUL G
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COFFEE MILLS DOMESTIC ARTICLES OR APPLIANCES DOMESTIC WASHING OR CLEANING ENGINE PLANTS IN GENERAL FURNITURE GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HUMAN NECESSITIES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING SPICE MILLS STEAM ENGINES SUCTION CLEANERS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A physical shape-conformable, disposable, self-sustaining sound dampening unit adapted to attach to the air exhaust of a pair of electric motors to dampen the noise produced by the same, which comprises: a body member formed of a thin imperforate film outer layer and a polymer foam inner layer lining the interior of said body member and having two inlet ports and at least one outlet port, the body having an interior pathway between the inlet ports and the outlet port, said inlet and outlet ports being disposed so that the incoming airstream impinges on an interior closed foam covered wall of said body and is made to turn at a right angle before reaching said outlet port.