Vermeer Manufacturing Company, Inc.

Duane E Norby

Scott Alan Rempe

Gregg Alan Austin

Brian John Bischel

Steven C Erickson

A lubrication system and method for dispensing a lubricant to threads of a drill rod and/or a spindle of a horizontal directional drilling (HDD) machine during a rod loading or unloading operation employs a pumping system having a lubricant reservoir, a pump, an applicator, and a lubricant supply conduit coupled between the pump and applicator. A heating unit is coupled to the pumping station and heats lubricant contained within the pumping system. A control unit coupled to the pumping system activates the pumping system to dispense a volume of lubricant from the applicator to the threads of the drill rod and/or spindle in response to an operator signal or an HDD machine control signal. A lubricant may be sprayed onto the spindle/drill rod threads. Alternatively, the lubricant may be communicated through a passageway defined within the spindle to one or more apertures defined within the threads of the spindle and/or the drill rod. The rate of lubrication application is preferably proportional to a rate of spindle rotation.

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Otley, IA, United States of America

Duane E Norby