US 12,247,705 B2
Device and method for filling cryogenic tanks
Logan Spencer, Woodstock, GA (US); and Erik Gustafson, Woodstock, GA (US)
Assigned to Chart Inc., Ball Ground, GA (US)
Filed by Chart Inc., Ball Ground, GA (US)
Filed on Jun. 5, 2023, as Appl. No. 18/328,884.
Application 18/328,884 is a continuation in part of application No. 17/524,458, filed on Nov. 11, 2021, granted, now 11,668,437.
Claims priority of provisional application 63/479,293, filed on Jan. 10, 2023.
Claims priority of provisional application 63/112,803, filed on Nov. 12, 2020.
Prior Publication US 2023/0324007 A1, Oct. 12, 2023
Int. Cl. F17C 5/02 (2006.01)
CPC F17C 5/02 (2013.01) [F17C 2205/0332 (2013.01); F17C 2205/0338 (2013.01); F17C 2223/0161 (2013.01); F17C 2227/0142 (2013.01); F17C 2250/043 (2013.01); F17C 2260/021 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A device for filling a cryogenic tank, comprising:
a body structure including:
an inlet port for receiving fluid from a delivery device;
a top-fill outlet port configured to connect to a top-fill line in communication with a cryogenic tank;
a bottom-fill outlet port configured to connect to a bottom-fill line in communication with a cryogenic tank;
a slider tube cylinder;
a cylinder housing connected to the body structure defining a pressure comparison cylinder having an upper volume and a lower volume, the lower volume in fluid communication with a cryogenic tank;
a piston slidably positioned in the pressure comparison cylinder;
an over-pressure member positioned in the upper volume of the pressure comparison cylinder, the piston contacting the over-pressure member as the piston slides upward in the pressure comparison cylinder;
a piston shaft connected to the piston;
a pressure regulator in fluid communication with the upper volume of the pressure comparison cylinder and the slider tube cylinder;
a slider tube connected to the piston shaft and slidably positioned within the slider tube cylinder, said slider tube cylinder configured to direct fluid to a top-fill line through the top-fill outlet port when a pressure in the lower volume exceeds a pressure setpoint and to direct fluid to a bottom-fill line through the bottom-fill port when the pressure in the lower volume is below a pressure setpoint.