Company Filing History:
1 out of 125 
1 out of 703 Years Active: 1986
Title: John Clarke: Innovator in Linear Beam Tube Technology
Introduction
John Clarke is a notable inventor based in Malvern Link, GB. He is recognized for his innovative contributions to the field of electronics, particularly in the design of linear beam tubes. His work has had a significant impact on the technology used in electron guns.
Latest Patents
Clarke holds a patent for his invention of linear beam tubes. This invention provides a linear beam tube that is protected against high voltage arcs between the cathode and anode of its electron gun. The design includes a limiting impedance connected to ground in a series path from the anode. The anode is mounted on a ceramic cylinder, which is co-axially positioned within a conical metallic member. The ceramic cylinder's end, opposite the anode, is attached to one end of the conical metallic member, while the other end features a flange that passes through the tube envelope for external grounding. Additionally, resistive material is deposited in a groove on the inner surface of the ceramic cylinder, forming a deposited impedance that extends from the anode to the conical metallic member, constituting the limiting impedance.
Career Highlights
Throughout his career, John Clarke has worked with prominent organizations, including English Electric Valve Company Limited and the Secretary of State for Defence in Her Britannic Majesty's Government. His experience in these companies has contributed to his expertise in electronic engineering and innovation.
Collaborations
Clarke has collaborated with notable individuals in his field, including Robin C. King and Maurice Esterson. These collaborations have likely enriched his work and contributed to advancements in technology.
Conclusion
John Clarke's contributions to the field of linear beam tube technology demonstrate his innovative spirit and dedication to advancing electronic engineering. His patent and career achievements reflect his significant role in the development of essential technologies.