Sanding disks
AssigneeNorton Company
InventorAnthony Alfred Van Osenbruggen
Life of this patent
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Abstract
Accessories for an angle grinder include a disposable rotary sanding disk having quite large shaped ventilating/viewing apertures, for use with a resilient backing plate also having shaped ventilating apertures. The apertures of one or both parts are shaped so that snagging of the apertures on projections from the work surface is minimized and to facilitate air flow across the work surface during use. This air flow helps in cooling the work and ejecting detritus, so minimising clogging effects. The ventilating apertures also facilitate viewing the work to be sanded through the spinning disk during the abrasion process, so that operator feedback is immediate. The holes also give the sanding disk more resilience so that a greater area comes in contact with the work and the disk wears more evenly over its abrasive surface.
Claims9
A circular abrasive disk having a mounting aperture and an abrasive bearing surface, said disk also having at least one non-concentric viewing aperture through the disk in which the shape of the disk is modified by the removal of a peripheral portion at least three spaced locations around the periphery of the disk and wherein the points on the disk between which portions have been removed are connected by a curved edge.
Dependencies are inferred from the claim text.