Blade reciprocating saws

Details Blade reciprocating saws Blade reciprocating saws

1980-01-22

1982-07-20

Godici, Nicholas P.

Cutting

Tool or tool with support

Toothed blade or tooth therefor

83851, 145 31R, 145 33R, B23D 5700, B27B 3302

Patent

active

043399770

ABSTRACT:
A blade for a reciprocating saw having a cutting edge comprising a plurality of longitudinally aligned teeth, the improvement comprising the teeth having a negative rake angle near the leading end of the blade for reducing needed force for cutting at the beginning of a stroke, and a positive rake angle near the trailing end of the blade for increasing the force necessary for cutting to decelerate the saw during or at the of the stroke, whereby cutting actions are related to expected blade speed at any given point on the saw and relatively constant muscular effort is required over the length of a stroke.

REFERENCES:
patent: Re3566 (1869-07-01), Boynton
patent: 85417 (1868-12-01), Andrews
patent: 295967 (1884-04-01), Abbott
patent: 566865 (1896-09-01), Morrish
patent: 1497577 (1924-06-01), Morzsa
patent: 2682098 (1954-06-01), Wilcox

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