US 12,405,037 B2
Magnetic failsafe valve for cryogen flow control
Ian M. Dayton, Arlington, VA (US); and Mark Edward Nowakowski, Arlington, VA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Arlington, VA (US)
Filed on May 4, 2023, as Appl. No. 18/311,944.
Prior Publication US 2024/0369269 A1, Nov. 7, 2024
Int. Cl. F25B 19/00 (2006.01); F25B 41/20 (2021.01); F16K 31/06 (2006.01); G01N 25/14 (2006.01)
CPC F25B 19/005 (2013.01) [F25B 41/20 (2021.01); F16K 31/0644 (2013.01); F16K 31/0679 (2013.01); G01N 25/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for controlling cryogen flow comprising:
a magnetic valve positioned between a cryogen source and a cryogen bath; and
a parallel solenoid circuit having a superconducting solenoid wound in a first direction and a non-superconducting solenoid wound in a second direction,
wherein the parallel solenoid circuit is coupled in parallel to a current source, and
wherein the parallel solenoid circuit generates a magnetic field that controls a position of the magnetic valve based on a temperature at the parallel solenoid circuit and a supply of current from the current source.