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US 2003/0224707 A1Published application
Dust director portable vacuum guard
OwnerTheodore R. Segiel JR.inventor
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OwnerTheodore R. Segiel JR.inventor
Estimating the term…
A dust director portable vacuum guard for mounting onto a portable angle grinder bore to both protect an operator from contact with the angle grinder turning blade and provide for an efficient vacuum removal of dust and debris off from a work surface. The dust director includes a housing consisting of parallel inner and outer walls joined at forward edges by a web and with the inner and outer walls connected, at upper edges, to a barrel. The barrel connects to a vacuum source and is slotted from a forward dust colleting end to the web, and the slot is stepped a selected distance apart from the inner wall upper edge to function as a baffle for increasing vacuum efficiency. An attachment ring is pivotally mounted in an opening in the housing inner wall that is to receive and couple to an angle grinder bore and can be released, with it and the connected angle grinder bore, to pivot in the inner wall opening by operation of a spring loaded thumb screw, allowing for pivoting of the vacuum guard for sawing through a wall corner. With, for sawing through a wall corner, the invention includes an extension cover that is pivotally connected across the inner and outer walls lower ends to be released to expose both sides of the angle grinder blade so as to allow an operator to observe the blade as it saws through a wall inside corner.
A dust director portable vacuum guard comprising, a housing formed from a stiff material to include a hollow straight tube, a pair of thin flat inner and outer walls that are spaced apart, are essentially parallel to one another, and connect at right angles to a back wall and each said inner and outer wall is connected along a straight edge to said straight tube, with said inner wall connection to said straight tube spaced a distance apart from an edge of a longitudinal slot formed in said straight tube that extends from a forward end to said back wall, providing an air baffle to a vacuum flow that is pulled through said barrel;
12 The dust director portable vacuum guard as recited in claim 1, wherein the leading or forward edge of the outer wall is approximately aligned with the rear edge of the attachment ring hole, and the junction of the outer wall lower edge and said leading or forward edge is rounded.
Dependencies are inferred from the claim text.