Percussive tool

Details Percussive tool Percussive tool

B - Operations, Transporting

25

D

121/16

B25D 9/04 (2006.01)

Patent

CA 1056667

ABSTRACT An operation varying facility is provided for a percussive tool having a reciprocable piston driven on an impacting stroke of the tool by compressible fluid and, on a return stroke to compress that medium, by pressure fluid supplied via control valve gear responsive to low and/or high predetermined pressures of the compressible fluid. This facility is operative for the control valve gear relative to actual attainment of such control pressures, or one of them, by presetting to give a nominal tool operating rate and variation to increase or decrease the actual tool operating rate.

263043

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