Electromagnetic percussion implement

Details Electromagnetic percussion implement Electromagnetic percussion implement

1982-09-24

1984-08-28

Rubinson, G. Z.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318125, 318126, 318127, 318128, 310 30, 310 23, 173 91, H02P 3300

Patent

active

044685947

ABSTRACT:
A two-directional percussion implement selectively adaptable both for driving in and for extracting, e.g. piles, from the ground, includes two coaxial electromagnetic coils whose movable armatures are represented by extremities of a reciprocable ram. Opposite anvils, one of which is adapted to be coupled with a driven element, are interlinked by a non-magnetic shaft traversing the ram. When the implement is intended for drilling operations, a rotary drive imparts rotation to one of the anvils via a connection permitting independent rotation and reciprocation. The shaft in this case has a central channel for taking samples or for conducting drilling fluids. When adapted only for axial percussions, the implement is vertically suspended on a cable via a shock absorber.

REFERENCES:
patent: 1753454 (1930-04-01), Weyandt
patent: 2241364 (1941-05-01), Hulbert
patent: 2803761 (1957-08-01), Young
patent: 3681629 (1972-08-01), Drye
patent: 4215297 (1980-07-01), Jacquemet

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