Douglas L Cheever

Title: Douglas L. Cheever: Innovator in Valve Technology

Introduction

Douglas L. Cheever is a notable inventor based in Dubuque, IA (US). He has made significant contributions to the field of valve technology, holding a total of 2 patents. His innovative designs focus on enhancing safety and efficiency in various applications.

Latest Patents

One of Cheever's latest patents is the Tamperproof Plug Valve. This invention features a spring-loaded, tamperproof design that ensures the valve plug is securely retained within the valve body. The unique mechanism utilizes two stacked, slit, frustoconical, transversely arched spring washers with teeth that create a one-way tight friction fit. This design prevents unauthorized removal and ensures that the valve remains operational unless the washer or valve is destroyed.

Another significant patent is the Vapor Recovery Nozzle, which is designed for filling vessels with liquid while recovering generated vapors. This nozzle includes a dual valve system, where the vapor valve is always open when the liquid valve is activated. It also features a common actuator and an automatic shutoff system that connects to the vapor line, ensuring efficient operation in vacuum-assisted vapor recovery systems.

Career Highlights

Douglas L. Cheever is currently employed at A.Y. McDonald Manufacturing Company, where he continues to innovate and develop new technologies. His work has contributed to advancements in safety and efficiency in fluid management systems.

Collaborations

Cheever has collaborated with notable coworkers, including Robert H. Barr and Thomas A. Lyons. Their combined expertise has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Douglas L. Cheever's contributions to valve technology through his patents demonstrate his commitment to innovation and safety. His work continues to impact the industry positively, showcasing the importance of inventive solutions in modern engineering.