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| Number | Title | Issue Date |
| 7351012 | Rotational drive apparatus for screw pilings A rotational drive apparatus for screw pilings is described. The apparatus comprises a housing having a cylindrical pipe coupling adapted to receive a shaft of a screw piling therethrough. A detachable connecting element secures the coupling to the shaft at differen... | 04/01/2008 |
| 7211972 | Power tool with remote stop The present invention is directed to a power tool including a wireless remote stop for terminating the flow of electricity to an electric motor. The electric motor is configured for operating a working element assembly of a power tool, such as an arbor/circular saw ... | 05/01/2007 |
| 7064502 | Power tool with remote stop The present invention is directed to a power tool including a wireless remote stop for terminating the flow of electricity to an electric motor. The electric motor is configured for operating a working element assembly of a power tool, such as an arbor/circular saw ... | 06/20/2006 |
| 5090488 | Power tool A power tool comprises a chuck, a first shaft driving the chuck and having an axis, a driving motor, a second shaft extending from the driving motor substantially parallel to the first shaft, means for transmitting a rotation of the second shaft to the fi... | 02/25/1992 |
| 4875529 | Alternate forms of, side drive drilling Disclosed is a method and apparatus comprising a side drive system with a drive shaft (24, 24a) driven from the platform level (10) and powering a drilling unit (16) for rotating drill pipe (14). Except for the tethering of the drive shaft at the top of t... | 10/24/1989 |
| 4871036 | Compliant rotary powered tool A compliant rotary powered tool that has been designed with the ability to be gripped by a mechanical arm yet which allows the power tool to be operated against a three dimensional surface as effectively as if operated in the hands of a human operator. To... | 10/03/1989 |
| 4683962 | Spinner for use in connecting pipe joints A spinner for rotating a pipe, such as a spinner mandrel, including a chambered frame having aligned openings through which the pipe can be inserted, drive assembly, such as a sprocket, rotatably mounted in the chamber, endless flexible spinning member, s... | 08/04/1987 |
| 4148367 | Well drilling apparatus This invention is a Well Drilling Apparatus primarily intended for drilling water wells, but also adaptable for other well, or hole drilling activities. The apparatus is particularly characterized by an independent driving arrangement for the drill, accom... | 04/10/1979 |
