Colin Arthur Longfield

Title: Colin Arthur Longfield: Innovator in Mechanical Control Systems

Introduction

Colin Arthur Longfield is a notable inventor based in Clamart, France. He has made significant contributions to the field of mechanical control systems, holding a total of 2 patents. His work focuses on enhancing the functionality and efficiency of directional valves and actuation control systems.

Latest Patents

Colin's latest patents include the "Indexer Controlled Directional Valve System" and the "Actuation Control System Using Pilot Control Circuit." The indexer controlled directional valve system introduces a technique that enables mechanical control of a directional valve. This system comprises a directional valve that can be mechanically actuated between multiple flow positions, coupled with an indexer mechanism that can shift to various desired positions defined by a cam track. As the indexer mechanism shifts, it mechanically adjusts the directional valve to selected flow positions.

The actuation control system facilitates the mechanical operation of components, such as valves, without the need for electronics. This fully mechanical system is designed to shift to different control positions via pressure input, such as that supplied along a wellbore annulus. It utilizes a spool valve coupled with a pilot control circuit that establishes a reference pressure for shifting the spool valve to various operational positions.

Career Highlights

Colin Longfield is currently employed at Schlumberger Technology Corporation, where he continues to innovate in the field of mechanical systems. His expertise and inventions have contributed to advancements in the industry, showcasing his commitment to improving mechanical control technologies.

Collaborations

Colin has collaborated with talented individuals such as Edgar Jose Montiel and Abbigail Ullrich. These collaborations have further enriched his work and contributed to the development of innovative solutions in mechanical control systems.

Conclusion

Colin Arthur Longfield is a distinguished inventor whose work in mechanical control systems has led to significant advancements in the field. His patents reflect his innovative spirit and dedication to enhancing technology.