Debris collection device for a powered hand drill

摘要

A debris collection attachment for a powered hand drill comprises an outer tube 3 having a ring collar 6 which fits onto the collar of a standard drill body. An inner tube (4 fig 1) is slidable within the outer tube. The two tubes are biassed apart by means of a compression spring (2 fig 1) and prevented from separation by means of lugs (7 fig 2) on the inner tube cooperating with an annular surface (8 fig 2) on the outer tube. The outer tube acts as a hand grip for a user. In use an outer collar (1 fig 1) at the free end of the inner tube contacts a material surface surrounding the point of drilling. As the drill penetrates the material the assembly telescopes inwards and any debris created by the drilling process is held within the inner tube. A scale 5 marked on the inner tube enables the user to determine the depth of drilling. Both tubes may be made from clear material.