1. Screwdriver; 2.-3. Screw

Abstract

The characteristic features of the present designs reside in the shape as shown; designs No. 2 and 3 are identical in shape and differ only with regard to their quality and type of representation; they both show a design for a screw with its particularly designed screw head; design No. 1 is for a screwdriver designed to be complementary in shape, with the screwdriver having a positive form that fits precisely into the negative form of the screw head; this matching geometry allows the screwdriver to securely engage with the screw, enabling it to be tightened or loosened effectively; therefore, all three designs have the same concept of design.

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