Impactor

Details Impactor Impactor

B - Operations, Transporting

25

D

138/40.1

B25D 9/12 (2006.01) B25D 9/14 (2006.01) F01L 25/04 (2006.01)

Patent

CA 1146443

ABSTRACT An impactor assembly in which a hammer piston is reciprocably moveable through alternate work strokes and return strokes is provided. The impactor assembly has a body with an elongated bore. The hammer piston is axially slidable within this bore. A closed fluid pressure drive system is provided which continously biases the hammer piston in one axial direction within the bore. A fluid flow path, which includes a valve, is formed within the body for selectively controlling the flow of hyraulic fluid to intermittently bias the hammer piston in a second axial direction which is opposite the first axial direction thereby effecting alternate strokes of the hammer piston within the bore. The valve includes an integral actuator which is capable of cycling the valve to intermittently bias the hammer piston against the drive system. The actutator is in continuous cooperation with the drive system to provide the impetus for cycling the valve.

360109

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