Dust extraction for power tools
AssigneeBlack & Decker Inc.
InventorAndrew Walker
Life of this patent
Estimating the term…
Abstract
There is also provided a dust extraction module for use with a power tool, the dust extraction module having: a dust collection chamber (50) having an inlet (52) connectable in fluid communication with an outlet (44) of a dust-extracting duct (40) of the power tool, and having an outlet (54) in fluid communication with atmospheric air; and a filter (60) locatable in fluid flow between the outlet of the dust collection chamber and the atmospheric air; wherein the dust collection chamber (50) has a substantially circular cross section, the inlet (52) to the dust collection chamber is at the perimeter of the circle and the outlet (54) of the dust collection chamber is from the middle of the circle.
Claims45
A power tool comprising:
- a working head for holding a working element;
- a duct having an inlet locatable in proximity to a point of contact between the working element and a workpiece;
- a dust collection chamber having an inlet in fluid communication with an outlet from said duct and an outlet in fluid communication with atmospheric air;
- a fan operable to transport air from the inlet of said duct to the outlet from said duct;
- and
- a filter fluidly connected between the outlet of said dust collection chamber and atmospheric air;
- and,
- wherein the dust collection chamber has a substantially circular cross section, the inlet to said dust collection chamber is at a perimeter of said dust collection chamber and the outlet of said dust collection chamber is proximate a middle of said dust collection chamber,
- wherein the cross section of the outlet of the dust collection chamber is larger than the combined cross section of through-holes in the working head.
A dust extraction module for use with a power tool, said dust extraction module comprising:
- a dust collection chamber having an inlet connectable in fluid communication with an outlet of a dust-extracting duct of said power tool, and having an outlet in fluid communication with atmospheric air;
- and
- a filter locatable in fluid flow between the outlet of said dust collection chamber and said atmospheric air;
- wherein the dust collection chamber has a substantially circular cross section, the inlet to said dust collection chamber is at a perimeter of said dust collection chamber and the outlet of said dust collection chamber is from a center of said dust collection chamber,
- wherein the cross section of the outlet of the dust collection chamber is larger than the combined cross section of through-holes in a working head.
Dependencies are inferred from the claim text.