Boring or penetrating the earth – With means to feed drive
Reexamination Certificate
2009-02-25
2011-11-01
Neuder, William P (Department: 3672)
Boring or penetrating the earth
With means to feed drive
C175S195000
Reexamination Certificate
active
08047306
ABSTRACT:
A low speed alternating current motor having motor shaft speeds of about 300 is provided, and such motor has application in numerous industries and devices, such as, for example, in top drive drilling systems. Because of the low shaft speed, mechanical speed reduction equipment may not be necessary. In addition, the motor shaft may be hollow to facilitate the flow of fluid, such as, for example, drilling mud.
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Canadian Office Action, Dec. 4, 2009.
Bradley Richard
Harris Rudy
Howard, Jr. Alvie E.
McNease Daniel F.
Williams Kevin R
Akin Gump Strauss Hauer & Feld & LLP
LeTourneau Technologies Drilling Systems, Inc.
Neuder William P
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