By Marie List, Executrix

Title: By Marie List, Executrix: Innovator in Rail Car Technology

Introduction: By Marie List, Executrix, is a notable inventor based in Yardley, PA (US). He has made significant contributions to the field of rail car technology, particularly with his innovative patent that addresses critical issues in rail car design and functionality. His work has implications for improving the safety and efficiency of rail transport.

Latest Patents: By Marie List holds a patent for "Constant contact side bearings with spring biased sliding wedges." This invention provides a support system for a rail car body on a multi-axle rail car truck. The design aims to restrain truck hunting and control car rocking. The patent describes a bearing receiver or cage mounted on the truck bolster, which supports wedge-shaped bearing blocks on inclined surfaces. The use of biasing means, such as a long travel coil spring, ensures a consistent normal bearing force on the car body throughout the wear life of the bearings. This innovative approach enhances the reliability and performance of rail cars.

Career Highlights: Throughout his career, By Marie List has been associated with Railway Engineering Associates, Inc., where he has applied his expertise in rail technology. His work has contributed to advancements in the design and functionality of rail systems, making them safer and more efficient.

Collaborations: By Marie List has collaborated with various professionals in the field, including his coworker Harold A List, who is now deceased. Their combined efforts have led to significant developments in rail engineering.

Conclusion: By Marie List, Executrix, is a distinguished inventor whose contributions to rail car technology have made a lasting impact on the industry. His innovative patent demonstrates his commitment to enhancing rail safety and performance.