Cutlery – Cutting tools – Plural cooperating blades
Patent
1981-05-22
1983-01-25
Kunin, Stephen G.
Cutlery
Cutting tools
Plural cooperating blades
91216R, 92111, 92117A, B26B 1500
Patent
active
043695760
ABSTRACT:
A portable hand-held hydraulically-operated cable cutter for severing electric and communication cables has a pair of cutter jaws, one fixed and one movable. The movable jaw is driven positively in both the closing and opening directions by a piston-cylinder assembly under the control of the lineman. The piston is fixed; the cylinder is movable. The movable cutter jaw is connected pivotally to the movable cylinder. The lineman holds the tool in one hand, using a fixed grip handle, and with the other hand controls operation of the movable cutter jaw by rotating a cylindrical control handle in one direction or the other. As a safety lock, the tool has an offset trigger which must be pressed to unlock the control handle before it can be rotated. When the control handle is released, it is automatically returned to its neutral position by a torsion spring, thereby instantly stopping any motion of the cutter jaws in either the opening or closing directions. The speed at which the cutter jaws open or close may be regulated by means of the control handle. The tool is operated from the hydraulic system of the line truck or from any other suitable open hydraulic system.
REFERENCES:
patent: 3561117 (1971-02-01), Murbach
Electrical World, "Hydraulic Cutters", H. K. Porter, Inc., Mar. 9, 1964, p. 70.
Kunin Stephen G.
Meislin Debra S.
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