Air duct and air flow system
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United States of America Patent
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Feb 21, 2017
Grant Date -
Nov 3, 2016
app pub date -
Sep 28, 2015
filing date -
May 1, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An air duct of this disclosure includes: a tubular duct body formed from a non-air-permeable material; and a tubular opening end member formed from an air-permeable material. The opening end member is integrated with an end portion of the duct body so as to extend a duct wall of the duct body. D representing a diameter of the opening end member and L representing a length thereof satisfy a relationship 0.1D≦L≦1.5D. An air permeability of the air-permeable material is in a range of 0.3 to 100 sec/300 cc.
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