Mark A Stira

Title: Innovations by Mark A. Stira: Pioneering Cryogenic Technologies

Introduction

Mark A. Stira, an accomplished inventor based in Wilmington, MA, has made significant contributions to the field of cryogenics with a total of six patents to his name. His innovations reflect a dedication to improving refrigeration technologies, particularly through the development of advanced systems for cryogenic applications.

Latest Patents

Among Mark’s notable inventions is the Pneumatic Drive Cryocooler. This innovative device is a Gifford-McMahon cryogenic refrigerator that features a reciprocating displacer inside a refrigeration volume. The displacer is pneumatically driven by a drive piston contained within a pneumatic drive volume. The pressure in this volume is meticulously regulated by a series of valves that allow the drive piston to adhere to a programmed displacement profile throughout its stroke. Notably, the drive systems may incorporate a proportional valve that ensures a continuously variable supply and exhaust of drive fluid, optimizing performance. In a sophisticated feedback system, the valve dynamically adjusts to minimize discrepancies between the displacement signal and the intended profile, enhancing efficiency. Additional proportional valving can also be applied to the warmer end of the refrigeration unit, ensuring comprehensive thermal management. The implementation of passive force generators, including mechanical springs or magnets, further complements the driving force supplied by the fluid, resulting in a robust and effective cooling solution.

Career Highlights

Throughout his career, Mark A. Stira has worked with renowned companies, specifically Edwards Vacuum LLC and Helix Technology Corporation. His roles in these organizations have allowed him to advance his expertise and apply his inventive principles in real-world technologies, benefiting both industries and researchers alike.

Collaborations

Mark has collaborated with distinguished coworkers, including Allen J. Bartlett and Sergei Syssoev, further enhancing the breadth of his work and fostering a collaborative spirit in the pursuit of innovative solutions in cryogenics.

Conclusion

Mark A. Stira stands out as a key figure in the realm of cryogenic technologies. His contributions, particularly through his latest patent on the Pneumatic Drive Cryocooler, exemplify his commitment to advancing refrigeration methods. With a strong foundation built on collaboration and a history of successful roles in leading companies, Stira's work continues to influence the future of cryogenics and refrigeration technology.