Dust extraction shroud for a power tool

Details Dust extraction shroud for a power tool Dust extraction shroud for a power tool

2005-05-03

2005-05-03

Joyce, Harold (Department: 3749)

Ventilation

Workstation ventilator

Having inlet airway

C144S252100, C408S067000, C454S049000

Reexamination Certificate

active

06887146

ABSTRACT:
A dust extraction shroud for a drill, which surrounds a drill bit and which lies adjacent the work surface, comprises a body portion defining a first inlet adapted to engage the work surface and to surround the location at which said bit penetrates the surface. The shroud body further defines a first outlet connected to a source of suction and a third inlet for allowing the bit to pass through said body portion. A first sealing means is arranged in said third inlet for surrounding said bit and resisting the flow of air. Wherein said body portion includes at least one protruding portion defining a second inlet between said protruding portion and an adjacent part of said body, and on a side of said protruding portion remote from the first inlet. The second inlet admits air to enter said body portion and travel to the first outlet.

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Hilti; TE 5 Dust Removal System Module; Hilti USA; located @ http://www.us.hilti.com/holus/modules/pract/prca_navigation.jsp?OID=-12011.

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