Hydraulic percussion apparatus

Details Hydraulic percussion apparatus Hydraulic percussion apparatus

1977-11-07

1979-08-28

Staab, Lawrence J.

Tool driving or impacting

Drive controlled by relative axial movement of tool

Drive motor controlled

173134, 173DIG4, 91303, 91319, 91321, B23Q 500, B25D 900

Patent

active

041657888

ABSTRACT:
A hydraulic percussion or an impact apparatus for driving rock-breaking tools, drill bits and ramming or tamping tools comprises a body in which an end of the tool is received and a reciprocating mass formed as a piston which is axially displaceable in a cylinder. The cylinder is provided with a distributor member slidable above the piston and of the same diameter as the latter, the distributor being formed as a sleeve having a central portion engaging a collar of a plunger which extends into a piston and forms therewith a suction chamber. The plunger has an extension which is slidable in a bore of the body and is acted upon by the high-pressure fluid.

REFERENCES:
patent: 1846804 (1932-02-01), Hansen
patent: 2781026 (1957-02-01), Schlatter et al.
patent: 3411592 (1968-11-01), Montabert
patent: 3664435 (1972-05-01), Klessig
patent: 3691907 (1972-09-01), Paschke
patent: 3766830 (1973-10-01), Montabert
patent: 3796271 (1974-03-01), Amtsberg
patent: 3803983 (1974-04-01), Amtsberg

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