Electric horizontal directional drilling machine system

Details Electric horizontal directional drilling machine system Electric horizontal directional drilling machine system

2006-07-11

2008-12-09

Bomar, Shane (Department: 3676)

Boring or penetrating the earth

With tool drive prime mover or above-ground mechanical...

C175S113000, C175S026000, C175S062000, C429S010000, C429S006000

Reexamination Certificate

active

07461707

ABSTRACT:
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, are used to power an electric motor controller and electric motor. The electric motor operates hydraulic pumps used to advance 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).

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Nuvera, “PowerFlow™ Fuel Cell Power Module”, Flyer, handed out at conference May 2005.

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