Electric motor

Details Electric motor Electric motor

1989-08-30

1991-11-26

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

310112, 310126, H02K 4100

Patent

active

050685546

ABSTRACT:
An electric motor suitable for incorporation in pipestacks for drilling and pumping applications has a drive shaft (4) carrying spaced rotor discs (6) driven by annular stator windings (7) carried by the motor housing wall. The windings (7) are organized as linear motors operating on a circular path and provision can be made for energization of the windings so as to cause axial movement of the shaft, for hammering or braking action. The shaft (4) can be tubular to provide a passage for drilling mud, or for a fluid being pumped.

REFERENCES:
patent: 3048723 (1962-08-01), Watson
patent: 4607197 (1986-08-01), Conrad
patent: 4844180 (1989-07-01), Zijsling

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