Douglas A Keehn, Jr

Title: Innovations by Douglas A. Keehn, Jr. on Merritt Island, FL

Introduction

Douglas A. Keehn, Jr. is an inventive mind based in Merritt Island, Florida, who has made significant contributions to marine engineering through his innovative patents. With a total of four patents to his name, Keehn continues to drive advancements in boat hull design and marine exhaust systems.

Latest Patents

Keehn's latest patents showcase his dedication to enhancing marine technology. One notable invention is the "Non-ventilating aft thruster tunnel design," which features a modified boat hull designed for dual, non-ventilating aft thruster tunnels. These tunnels include a tubular section that fluidly communicates with the transom outlet orifice and a converging transition section that connects to a strategically positioned water inlet orifice beneath the boat’s chine and waterline. This innovative design also incorporates an inboard offset and a chine step to optimize hydrodynamic performance, particularly at plane speed.

Another remarkable patent by Keehn is the "Submerged marine exhaust system," which presents an improved marine engine exhaust device. This device efficiently discharges exhaust below the water's surface in a turbulent zone, maintaining gas for a specific period until the low-pressure area following the vessel has passed. The system also integrates a water intake that provides cooling to the marine engine's cooling system and accommodates a sensing transducer.

Career Highlights

Throughout his career, Douglas A. Keehn, Jr. has worked with prominent companies in the marine industry, including Ray Industries, Inc. and Brunswick Corporation. His work in these organizations has allowed him to develop and refine his inventive ideas, leading to his successful patent applications.

Collaborations

Keehn has collaborated with notable colleagues such as Frank B. Ousley, II and William W. Powell. These partnerships have likely contributed to his innovative thinking and success in creating impactful marine technologies.

Conclusion

Douglas A. Keehn, Jr. exemplifies the spirit of innovation within the marine engineering field. His latest patents regarding buoy hull structures and exhaust systems highlight his commitment to advancing technology for greater efficiency and performance in marine vessels. As he continues to innovate, his contributions will undoubtedly influence the industry for years to come.