US PATENT SUBCLASS 415 / 903
WELL BIT DRIVE TURBINE

Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

903WELL BIT DRIVE TURBINE

DEFINITION

Classification: 415/903

WELL BIT DRIVE TURBINE:

Rotary device which obtains mechanical power from kinetic or potential energy in a working fluid* (i.e., "motor"* device) to drive a boring cutter for drilling a well shaft, usually in the earth.

SEE OR SEARCH THIS CLASS, SUBCLASS:

904, for a motor device for driving a tool other than one for

drilling a well (e.g., dental drill, etc.).