Abstract: A curved saw having a saw blade 1 curved from the back end to the front end. A multitude of saw teeth 2 are formed on the concave edge of the curved saw blade 1 in such a way that angles ? of tooth flanks 3 near the back end of the saw blade 1 with respect to the edge line 5, which connects the tooth tips 4 of the saw teeth, are relatively larger than angles ? of tooth flanks 3 near the front end of the saw blade 1 with respect to the edge line 5.

Abstract: A protective cover (4) for a folding saw in which the edge (1a) of the blade (1) can be nestled in place inside the housing groove (3) of the handle (2) having a semi-U-shaped cross section for housing the blade (1) in such a way that it is pivotally movable around the top end of the handle. A pivotal control lever (5) disposed at the bottom end of the handle (2) has a portion engaged with the tip of the protective cover (4). The protective cover (4) can be inserted into, and retracted from, the housing groove (3) of the handle (2) by the pivotal operation of the control lever (5). In this way, the protective cover (4) covers the edge (1a) of the blade (1) that is exposed from the housing groove (3).

Abstract: A folding saw in which either the edge of the blade, the handle or both are curved, to prevent the edge of the blade from being exposed when blade is folded so that the saw can be handled safely. The protective cover in which the edge of the blade can be nestled is placed inside the housing groove of the handle having a semi-U-shaped cross section for housing the blade. The protective cover is retractable with respect to the housing groove, and when the blade is folded, projects out of the housing groove and covers the edge, which may be exposed. The protective cover is preferably energized by a spring so that it covers the edge whenever the blade is folded.

Abstract: A protective cover (4) for a folding saw in which the edge (1a) of the blade (1) can be nestled in place inside the housing groove (3) of the handle (2) having a semi-U-shaped cross section for housing the blade (1) in such a way that it is pivotally movable around the top end of the handle. A pivotal control lever (5 ) disposed at the bottom end of the handle (2) has a portion engaged with the tip of the protective cover (4). The protective cover (4) can be inserted into, and retracted from, the housing groove (3) of the handle (2) by the pivotal operation of the control lever (5). In this way, the protective cover (4) covers the edge (1a) of the blade (1) that is exposed from the housing groove (3).