DitchWitch Awarded Patent for Electric HDD Machine
On November 18th, 2014, patent number 8,890,361 was awarded to the Charles Machine Works for an electric horizontal directional drilling machine system.
The patent abstract describes the invention as:
An electric horizontal directional drilling machine. An electric horizontal directional drilling machine is powered by an electric power assembly. The power assembly is made up of a fuel cell and inverter, or multiple fuel cells with synchronized inverters. The electric motor operates hydraulic pumps or works independently to rotate, advance and retract a drill string and downhole tool through the earth and operate various machine functions. Mechanical functions of the drilling machine may also be satisfied through the use of electric rotary actuators (e.g., motors) and linear actuators (e.g., linear motors and solenoids).
It is not yet known when or if DitchWitch will start manufacturing an electric directional boring machine.