Andrew D Dumas

Title: Innovations by Andrew D Dumas

Introduction

Andrew D Dumas is a notable inventor based in Jericho, Vermont, who has made significant contributions to the automotive industry. He holds a total of six patents, showcasing his expertise in transmission technology and design. His innovative work has led to advancements that improve the efficiency and performance of automotive systems.

Latest Patents

Among his latest patents is the "Transmission Shifting Assembly and Method." This invention describes a transmission servo assembly featuring a dual piston assembly designed for use in automobiles. The dual piston assembly consists of a primary and a secondary piston that work together within an assembly housing. This design allows for the application of a high apply force to the servo pin while reducing the pressure of both the apply fluid and the release fluid, ultimately conserving power used by an external fluid pump. Additionally, this assembly significantly reduces band drag by balancing the pressure applied to the dual piston system and incorporating a biasing member that provides suitable initial and ending forces.

Another significant patent is the "Universal Multiplate Torque Converter Clutch System and Method of Use." This system is adaptable for installation in torque converters of various automatic transmission manufacturers, including Borg Warner, Allison, Ford, General Motors, and Chrysler. The multiplate torque converter clutch system is provided in a kit format, which includes a hybrid lock-up piston/damper plate subassembly, multiple clutch plates with friction rings, and sets of outer and inner damper springs. This innovative system allows for tuning to match peak engine torque values by adjusting the number of damper springs, and it can be easily disassembled for modifications.

Career Highlights

Andrew D Dumas is currently employed at Sonnax Industries, Inc., where he continues to develop and refine automotive technologies. His work at Sonnax has allowed him to collaborate with industry leaders and contribute to the advancement of transmission systems.

Collaborations

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Conclusion

Andrew D Dumas is a prominent inventor whose work in transmission technology has led to significant advancements in the automotive industry. His innovative patents reflect his commitment to improving vehicle performance and efficiency.