Abstract: A powered gate valve wrench having a motor, a belt drive assembly coupled to the motor, a chain drive assembly coupled to the belt drive assembly and an output shaft attached to the chain drive assembly. The output shaft has two splined ends capable of receiving a socket attached thereon, which couples to a gate valve to transmit the rotational force of the motor to the gate valve. When coupled to the gate valve, each end of the shaft provides rotation in opposite directions. The entire assembly is mounted to a lightweight, compact housing for portability.

Abstract: A open-framed and lightweight inverter power source rack made from aluminum that offers the versatility of providing varying amounts of power sources from a single branch circuit external power supply. A first rack can act as a stand-alone power supply for up to four power sources. A second or slave rack detachably connects with the first rack as the need for power sources increases on a job site. The slave rack is fed from the same external power supply as the first rack. As the need for power sources on the job site decreases, the slave rack may be disconnected from the first rack and connected to another rack where additional power sources are required. Moreover, inverter power racks are adapted to be shipped and transported in knock-down, disassembled state for final partial assembly by the user to reduce shipping and manufacturing costs.