Patent ID: 11898801
Assignee: ALCOR LIFE EXTENSION FOUNDATION, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  A  B | IPC B  F

Claim 0:
1. A method for passively maintaining the temperature in a cryogenic chamber within a predetermined temperature range between a low temperature threshold and a high temperature threshold, said method comprising the steps of:
a. sealing the chamber to contain biological material and a working gas;
b. thermo-coupling an evaporator of an inner heat pipe to the chamber;
c. further thermo-coupling a condenser of the inner heat pipe to a heat sink;
d. secondarily thermo-coupling a condenser of an outer heat pipe to the chamber;
e. further secondarily thermo-coupling on evaporator of an outer heat pipe to as cool sink;
f. whereby the inner heat pipe causes energy transfer out of the chamber when the temperature of the thermo-coupled inner heat pipe evaporator exceeds the low temperature threshold, and the outer heat pipe causes energy transfer into the chamber when the temperature of the thermo-coupled outer heat pipe condenser drops below a high temperature threshold.