Dust extractor
OwnerOwen Lewis Richardsoninventor
Life of this patent
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Abstract
A dust extraction housing for a rotary drill has a rear collar 10 which attaches to a stationary boss 14 of the drill and a concertina tube 18 extending forward to enclose the drill bit 22. A forward end piece 24 of the housing has an outlet 26 for attachment of a vacuum source and an air inlet 34 fitted with a removable filter 36.
Claims9
A dust extraction housing for a rotary tool, comprising a collar for removable attachment to a stationary part of the tool, a tubular enclosure extending forwardly of the collar for enclosing a rotary portion of the tool, the tubular enclosure being concertinaed to allow compression when the tool is moved forward to engage and penetrate a workpiece, means for connection of an external vacuum source for removing particles formed by action of the tool on the workpiece, air inlet means to allow ingress of air to said housing, and a filter fitted to said air inlet means.
Dependencies are inferred from the claim text.