Coping saw with multi-directional cutting blade
OwnerNorbert Kirkinventor
Life of this patent
Estimating the term…
Abstract
A thin saw blade with four cutting surfaces of fixed lengths in line, each cutting surface rotated with respect to the preceding cutting surface to enable a user to change cutting directions of the blade without rotating the material to be cut. A preferred embodiment uses the blade in a coping saw with each rotation being 90 degrees enabling rapid smooth cuts of thin materials for handicraft projects. Rubber O-rings secure the blade in anchor bolt slots to secure the blade while cutting in different directions. The blade could also be used in electric saber saws or bench jig saws which would require adjustment of the work support surface to change cutting directions.
Claims10
A thin saw blade having means for support at least at a first end for connecting the saw blade to a reciprocating mover, the saw blade having an axis with a first cutting surface of a fixed length ending in a short axial transition from the first cutting surface to another orientation axially in line with the first cutting surface that is angularly rotated from the first cutting surface to a second cutting surface of a fixed length.
A saw blade mounted in a coping saw frame, the blade having four straight cutting surfaces each approximately one-fourth the length of the blade in series each angularly rotated 90 degrees around an axis from the first cutting surface to the second cutting surface to the third cutting surface to the fourth cutting surface to a final 90 degree rotation with the blade ends having pins extending perpendicularly from each end and the pins anchoring the blade in slots in anchor bolts in the coping saw U-frame.
Dependencies are inferred from the claim text.