US Patent 7247180 Silencer for dust collection system
Patent 7247180 was granted and assigned to Oneida Air Systems Inc. on July, 2007 by the United States Patent and Trademark Office.
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An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. A cyclonic separator is connected by a flexible hose to the tool and by another hose to the vacuum source. The cone of the separator is mounted onto the lid of a drum into which the dust precipitates. For a tool that has its own blower, the vacuum source can be omitted, and the air leaving the outlet duct of the separator can be filtered and returned to the ambient. A drop in silencer formed of a sleeve or tube of acoustic foam can be positioned into the inlet side of a filter cartridge following a cyclonic separator. The silencer absorbs a significant fraction of the process noise. The acoustic foam can have a textured surface on the sound-facing side.
US Patent 07247180 Silencer for dust collection system US Patent 7247180 Silencer for dust collection system
US Patent 07247180 Silencer for dust collection system
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