Importance

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Abstract

The saw blade for an electric compass- or keyhole-saw has a saw part with a tooth arrangement and a clamping part with which the saw blade is clamped between two clamping pieces of a clamping device of the compass- or keyhole-saw with a clamping screw to hold parts together in clamped relationship. The clamping part has a centering opening and a plug or insert opening for the tensioning or clamping screw. The plug or insert opening is delimited or bounded by two clamping tongues laterally thereof. The relationship or ratio of the width of the clamping part measured transverse to the longitudinal axis of the saw blade with respect to the length lies in a range of approximately 1:1.4. The relationship or ratio of the length of the plug or insert opening to the width thereof lies in a range between approximately 1:0.7 to approximately 1:1.1. The clamping tongues are constructed respectively having approximately square or rectangular shape. Because of this construction and arrangement, the saw blade can be clamped in the clamping device without gap formation. The reaction forces arising or encountered during saw operation and sawing are taken up by the clamping tongues without danger of any damage occurring and these reaction forces are conveyed into the clamping device.

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First Claim