Cutlery – Cutting tools – Saw
Patent
1991-09-26
1992-04-14
Phan, Hien H.
Cutlery
Cutting tools
Saw
83697, 279 76, 403317, 409287, B23D 5110
Patent
active
051035650
ABSTRACT:
In the first embodiment, the distal end of a reciprocating plunger of a power saw includes a longitudinally extending cavity receiving a block-like wedge member. A planar wall of the cavity and a planar face of the wedge member are arranged for substantial coextensive engagement with respective opposed faces of the saw blade. A spring in the cavity engages the wedge member for urging the same outwardly of the cavity. A pin extends through the wedge and has its opposite ends received in slots in opposed walls of the plunger. These slots are inclined with respect to the longitudinal axis of the plunger and cooperate with the pin to form a cam to urge the planar surfaces into clamping engagement with the blade under the influence of the spring. The blade may be released by forcing the wedge inwardly of the cavity under finger pressure. In a second embodiment, a similar block-like wedge member cooperates with a U-shaped member mounted on the plunger. An exterior planar wall of the plunger and a planar face on the inside of the bight portion of the U-shaped member are arranged for respective coextensive engagement with opposed faces of a saw blade for holding the same in place under the influence of a spring which cooperates with cam constituted by a pin and an inclined slot in the block-like wedge member.
REFERENCES:
patent: 2101362 (1937-12-01), Davidson
patent: 2107581 (1938-02-01), Parsons et al.
patent: 2468195 (1949-04-01), Hanes
patent: 4106181 (1978-08-01), Mattchen
patent: 4601477 (1986-07-01), Barrett et al.
Phan Hien H.
Skil Corporation
Woods Raymond D.
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