B - Operations – Transporting – 27 – F
Patent
B - Operations, Transporting
27
F
1/24
B27F 7/02 (2006.01)
Patent
CA 1052951
"ELECTRIC IMPACT TOOL" ABSTRACT OF THE INVENTION This invention relates to an electric impact tool characterized by a pair of electric motor-driven counter- rotating flywheels, at least one of which is movable relative to the other from a retracted inoperative position into an extended operative one closely adjacent the other flywheel whereby a ram is squeezed therebetween and impelled forward at high speed against a workpiece. The nosepiece of the tool frame is retractable although normally extended due to the spring bias urging it and the movable flywheel to which is it mechani- cally linked into disengaged position. These elements co- operate with one another and with a manually-actuated trigger such that the latter must be depressed and the nosepiece re- tracted in order to engage the high energy friction clutch defined by the flywheels so as to operate the ram. A flywheel speed control is provided for matching the ram impact to the workload. The nosepiece also includes an energy absorbing cushion effective to dissipate the excess energy carried by the ram at the end of its work stroke so as to prevent damage to the structure against which the nosepiece is pressed.
278966
Cunningham James D.
Smith James E.
Cunningham James D.
Smith James E.
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