US 11,672,937 B2
Cooling element, control system, freezing holding device and process for controlling a closed-circuit respirator
Henning Gerder, Lübeck (DE)
Assigned to Dräger Safety AG & Co. KGaA, Lübeck (DE)
Filed by Dräger Safety AG & Co. KGaA, Lübeck (DE)
Filed on Dec. 17, 2019, as Appl. No. 16/717,098.
Claims priority of application No. 10 2018 009 805.3 (DE), filed on Dec. 18, 2018.
Prior Publication US 2020/0188626 A1, Jun. 18, 2020
Int. Cl. A61M 16/10 (2006.01); A61M 16/00 (2006.01); A61M 16/08 (2006.01); A62B 9/00 (2006.01)
CPC A61M 16/1075 (2013.01) [A61M 16/0003 (2014.02); A61M 16/022 (2017.08); A61M 16/0891 (2014.02); A62B 9/003 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3382 (2013.01); A61M 2205/3386 (2013.01); A61M 2205/366 (2013.01); A61M 2205/3606 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A closed-circuit respirator cooling device cooling element comprising:
an element housing with a liquid-tight cap;
a coolant at least partially filling the element housing, wherein the coolant has a melting point below 50° C.; and
a sensor element arranged in contact with the coolant within the element housing such that the sensor element is movable in a direction of gravity acting on the sensor element in a liquid state of the coolant during the use of closed-circuit respirator by a user of the closed-circuit respirator.