Mark S Asher

Title: Mark S. Asher: Innovator in Cryogenic Technology

Introduction

Mark S. Asher is a notable inventor based in Woodbridge, VA (US), recognized for his contributions to cryogenic technology. He holds 2 patents that showcase his innovative approach to optimizing cooler systems. His work is primarily associated with the US Government as represented by the Secretary of the Army.

Latest Patents

One of his latest patents is titled "Means for producing an optimized cooler expander waveform." This invention focuses on a method for generating an optimized cooler expander waveform for a closed-loop cryogenic cooler. The design involves a cooler displacer driven by magnetic and spring biasing means, which operates through four repeated phases in each cycle. Each phase comprises a constant velocity in opposite directions and dwell times, ensuring smooth transitions between portions of the waveform. The control system utilizes a function generator to apply the desired waveform into a displacer control drive circuit, continuously comparing the actual and desired positions of the displacer.

Another significant patent is "Cryogenic cooler with annular regenerator and clearance seals." This invention describes a Stirling Cooler featuring a three-stage cold finger. The cold finger is designed with a sped displacer within a stepped cylinder, surrounded by an outer shell containing regenerator material. The configuration allows for three swept expansion spaces that communicate with the regenerator space, utilizing clearance seals to enhance efficiency.

Career Highlights

Mark S. Asher has made substantial contributions to the field of cryogenic technology through his innovative patents. His work has implications for various applications, particularly in military and aerospace sectors, where efficient cooling systems are crucial.

Collaborations

Throughout his career, Asher has collaborated with esteemed colleagues, including Stuart B. Horn and Richard A. Wright. These partnerships have furthered advancements in cryogenic technology and enhanced the impact of his inventions.

Conclusion

Mark S. Asher's innovative work in cryogenic technology, particularly through his patents, demonstrates his commitment to advancing this critical field. His contributions continue to influence the development of efficient cooling systems, showcasing the importance of innovation in technology.