Dust cup
AssigneeThe Black and Decker Manufacturing Company
InventorsWilliam D. Sauerwein, Daniel Harrison Sides
Life of this patent
Estimating the term…
Abstract
A dust cap particularly for use with an overhead rotary hammer. The dust collector is a cup-like member with a bellows side wall, integrally formed in one piece. It has a thickened neck to fit on the tool shank below the chuck, thereby encompassing the chuck and the lower end of the anchor. Dust is efficiently caught in that the bulk of the dust passes through the anchor and chuck, and then directly into the dust collector cup, plus most of the dust outside the anchor is also caught as it falls around the anchor. The bellows side wall facilitates changing tools and removing anchor ends.
Claims7
In combination with a self-drilling anchor, a chuck for holding said anchor, an adaptor shank for holding said chuck, and a power tool to drive said shank and chuck and anchor;
- the improvement comprising a cooperating portion on the adaptor shank located below said chuck and opposite said anchor mounted in said chuck, a dust cup operatively cooperable with said formed portion to hold said dust cup on said formed portion, said dust cup consisting of resilient material and comprising a neck portion adapted to be engaged with said cooperating portion of said shank, an annular wall at the rear end of said neck portion and extending radially outwardly therefrom, a plurality of sidewall portions extending forwardly from the outside of said annular wall and overlying said neck portion and said chuck, and each of said sidewall portions being alternately radially inwardly forwardly and radially outwardly forwardly disposed, whereby the side of said dust cup is of a bellows-like configuration.
Dependencies are inferred from the claim text.