Cutlery – Cutting tools – Plural cooperating blades
Patent
1986-09-04
1988-04-05
Watts, Douglas D.
Cutlery
Cutting tools
Plural cooperating blades
30249, B26B 1500
Patent
active
047349832
ABSTRACT:
The invention is a high-power portable cutting tool which is particularly effective in cutting through sheet metal. The tool can thus be used for extricating accident victims from wreckage. The tool is operated by hydraulic power, and has one movable blade and one stationary blade. The movable blade is curved, and is mounted so as to close onto the stationary blade. The curvature of the movable blade is such that its initial contact with the stationary blade occurs at its free end. The stationary blade is formed on an anvil, anchored within the frame of the tool. The anvil is sufficiently long that its end extends beyond the end of the movable blade. The anvil is anchored within a slot formed in the cover portion of the frame, and is locked into position with a dowel. The mounting of the anvil within the slot is such that the forces exerted on the blade are directed against the heavy cover, and not against the dowel.
REFERENCES:
patent: 3039189 (1962-06-01), McBerty
patent: 3165780 (1965-01-01), Kellersman et al.
patent: 3533162 (1970-10-01), Pacitti
patent: 3819153 (1974-06-01), Hurst
patent: 3971131 (1976-07-01), Boyajian
patent: 4333330 (1982-06-01), Porter
patent: 4359821 (1982-11-01), Pellenc
patent: 4392263 (1983-07-01), Amoroso
patent: 4531289 (1985-07-01), Brick
Lukas American--Model 25b--Spreader and Cutter.
Eilberg William H.
Watts Douglas D.
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