| 摘要 |
A cover for a power operated tool has visual warning indicia to indicate rotation of the tool to protect users from contact with rotating cutting elements of the tool. The cover may be a disc having a pair of opposite surfaces, each including brightly colored, spaced indicia. The cover is centrally apertured for mounting on the tool spindle to rotate with the cutting elements. A threaded fastener holds the cover in place. When the spindle is at rest, the spaced indicia are visible to observers. When the spindle is rotated the indicia also rotate to form the appearance of a bright, solid color on the cover thereby warning observers that the tool is in use. The indicia may also be positioned between the aperture and an outer margin of the cover to form the appearance of an annular stripe when the cover is rotated.
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