Nonrotary piston for jackhammer and removable splined nut theref

Tool driving or impacting – Impacting devices – Hammer head moves in arcuate path or rotates

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Details

173111, B25D 1600

Patent

active

053058356

ABSTRACT:
A fluid-activated, percussive impact tool has a piston therein that reciprocates longitudinally but not rotationally. The piston activates a wrap spring clutch to rotate the drill steel. A removable splined nut in combination with the tool's housing restrains rotation of the piston, while permitting longitudinal reciprocation of the piston.

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