Hydraulic jackhammer

Details Hydraulic jackhammer Hydraulic jackhammer

1989-12-19

1992-06-02

Watts, Douglas D.

Tool driving or impacting

Impacting devices

With means for rotating tool

173 73, 173 80, 173122, 173128, 173DIG4, 173210, B25D 912, B25D 1722

Patent

active

051179237

ABSTRACT:
The hydraulic jackhammer is provided with a rotor turbine which is driven by a liquid stream in order to activate the tup for driving against a jumper rod. After passing by the turbine rotor, the liquid stream is mixed with air and passed through a nozzle into a guide channel under pressure in order to cool the casing. Some of the liquid-air mixture is passed through the hollow jumper rod for spraying onto a jumper bit and sprayed onto the rock being drilled.

REFERENCES:
patent: Re20365 (1937-05-01), Baker
patent: 2145760 (1939-01-01), Fetherston
patent: 2251224 (1941-07-01), Curtis
patent: 3133600 (1964-05-01), Hochreuter
patent: 3685593 (1972-08-01), Amtsberg et al.
patent: 3695367 (1972-10-01), Catterfeld et al.
patent: 3865194 (1975-02-01), Chatfield, Jr.

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