Apparatus for controlling the feed drive of a boring mechanism f

Details Apparatus for controlling the feed drive of a boring mechanism f Apparatus for controlling the feed drive of a boring mechanism f

1997-04-21

1999-06-22

Melius, Terry Lee

Boring or penetrating the earth

Automatic control

Of advance or applied tool weight

175 24, 173 4, 173177, E21B 306, E21B 4400, B23Q 500

Patent

active

059133716

ABSTRACT:
In a preferably hydraulic control for a preferably hydraulically-driven earth boring mechanism, whereby a boring rod equipped with a boring tool is fed into and out of the earth with simultaneous rotation, the feed speed of the rod is regulated automatically in dependence on the rotational movement applied to the boring rod and/or on the feed force applied to the boring rod to optimize the speed of the boring process and to prevent overload damage to the boring rod, boring tool and other parts of the boring mechanism.

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patent: 5465798 (1995-11-01), Edlund et al.
patent: 5563482 (1996-10-01), Shaw et al.
patent: 5637968 (1997-06-01), Kainec et al.
patent: 5771981 (1998-06-01), Briggs et al.

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