Developers of the first

Pneumatic operated

​Submerged Vehicle Trainer

Jeff Hartjoy

Patrick O'Brien  has been a professional firefighter for 14 years serving with two different departments. With a steep background in technical rescue, Pat currently instructs rope and swiftwater rescue and is heavily involved in the development of both disciplines. Pat brings a unique set of skills to Knuckledragger including computer aided design, welding, and fabrication. Pat has invented and developed one of a kind fire service tools and props that continue to help our first responders in their service.

Jeff Hartjoy  brings over 26 years of experience in the welding & metal fabrication business.  Prior to becoming a professional firefighter, Jeff owned two welding and fabrication businesses in the Puget Sound area.  Jeff also drove sprint cars for 10 years and spent 2 seasons racing full time in the Midwest working with some of the best fabricators in the racing industry.  Jeff has an extensive background working with a vast array of different metals and alloys. Jeff is a Swiftwater and Rope Technician and currently serves his community dragging his knuckles around on a Truck.   

Patrick O'Brien

Tel: 253-350-5631

P.O. Box 1566  

Buckley, WA, 98321

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