Dust extraction shroud for a power tool

A dust extraction apparatus for a power tool having a working member adapted to penetrate a surface of a workpiece, the apparatus comprising:

• a housing;
• a suction means provided in the housing;
• and
• a dust extraction shroud including:
• a body portion defining a first inlet adapted to engage the surface of the workpiece and to surround a location at which said working member penetrates the surface, and including a protruding portion defining a second inlet between said protruding portion and said body portion adjacent thereto, and on a side of said protruding portion remote from said first inlet;
• a first outlet adapted to be connected to the suction means;
• a third inlet for allowing said working member to pass through said body portion and said first inlet;
• and
• a first sealing means arranged in said third inlet for surrounding said working member and resisting the flow of air through said third inlet;
• wherein the suction means is operable to draw air into said body portion via the second inlet, then pull the air past said working member and out of the shroud body portion via the first outlet.

A power tool comprising:

• a tool housing;
• an electric motor provided in the tool housing;
• an output shaft adapted to be caused by said motor to actuate a working member of the power tool;
• a dust extractor housing;
• a suction means provided in the dust extractor housing;
• and
• a dust extraction shroud including:
• a body portion defining a first inlet adapted to engage the surface of the workpiece and to surround a location at which said working member penetrates the surface, and including a protruding portion defining a second inlet between said protruding portion and said body portion adjacent thereto, and on a side of said protruding portion remote from said first inlet;
• a first outlet adapted to be connected to the suction means;
• a third inlet for allowing said working member to pass through said body portion and said first inlet;
• and
• a first sealing means arranged in said third inlet for surrounding said working member and resisting the flow of air through said third inlet;
• wherein the suction means is operable to draw air into said body portion via the second inlet, then pull the air past said working member and out of the shroud body portion into the dust extractor body via the first outlet.