John H Hallman

Title: Innovations of John H Hallman

Introduction

John H Hallman is a notable inventor based in Rockford, IL (US). He has made significant contributions to the field of engineering, particularly in the development of advanced pump systems. With a total of 2 patents, Hallman's work showcases his innovative approach to solving complex engineering challenges.

Latest Patents

One of Hallman's latest patents is a centrifugal liquid pump with cavitation surge suppression. This invention features an impeller and a hub that effectively separates gases entrained in the liquid, allowing them to collect near the hub through centripetal action. The design includes a shaft connected to the hub for rotating the impeller, with a passageway extending axially through the shaft. An air pump is positioned at the opposite end of the shaft to evacuate the separated gases, ensuring efficient operation independent of the impeller.

Another significant patent is a lubrication scavenge system designed for engine bearing compartments. This system utilizes a gear pump with multiple independent inlets and separate flow paths. The innovative design maintains the separation of fluids through the use of inlet and discharge seal arcs, allowing the pump to operate effectively with different fluids, whether gas, liquid, or a mixture of both. This adaptability is crucial for maintaining performance under varying gravity forces.

Career Highlights

John H Hallman is associated with Sundstrand Corporation, where he has applied his expertise in engineering and innovation. His work has contributed to the advancement of pump technology, enhancing the efficiency and reliability of various systems.

Collaborations

Hallman has collaborated with notable coworkers, including John Edward Cygnor and Theodore C Powers. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

John H Hallman's contributions to engineering through his patents and collaborations highlight his role as an influential inventor. His innovative designs continue to impact the field, showcasing the importance of creativity and technical expertise in engineering advancements.