Alternate forms of, side drive drilling
Angle drive for a surgical power tool
Apparatus for fastening misaligned structural members
Apparatus for handling a drilling equipment
Apparatus for rotating and reciprocating well pipe
Apparatus for stringing well pipe or casing
Brake control for rotary electric tools
Chuck and wrench assembly for raise drill apparatus
Compliant rotary powered tool
Continuously engaged tangential driving tool
Cordless power driven tool
Drill rod opening device for sectional-rod drilling equipment
Drill stem for drilling upwardly
Drill string element
Drive connector with load compensator
Electric hand tool
Electrical hand tool
Flexible coupling for downhole motor
Forward and reverse rotary tool
Hand-held electric tool