Air-operated reversible percussive action machine

Details Air-operated reversible percussive action machine Air-operated reversible percussive action machine

1984-10-11

1987-08-04

Kazenske, E. R.

Tool driving or impacting

Impacting devices

Selective axial direction of impact

173134, B25D 900

Patent

active

046839607

ABSTRACT:
An air-operated reversible percussive action machine comprises a housing in which there is disposed for axial reciprocations a hammer, defining therewith a front working chamber and having a through radial passage. In the axial interior of the hammer on the side of its tail end there is provided a cylindrical stepped tube including coaxially arranged first and second steps of large and small diameters, respectively, these steps having through radial passages. The first step of the tube defines with the hammer a rear working chamber, and with the second step defines an annular cavity in which a spring sleeve capable of axial displacements is disposed. The outer diameter of the sleeve is substantially less than the inner diameter of the first step of the tube to form an annular passage there between. The machine is further provided with a means for pressure-sealing the annular cavity and a means for controlling the displacements of the sleeve.

REFERENCES:
patent: 3744576 (1973-07-01), Sudnishnikov

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