US 12,276,210 B2
Hydrogen expansion system for fuel cell use
Robert Gulliver Lynn, Auckland (NZ); and Jeffrey Allen Lotterman, Los Angeles, CA (US)
Assigned to Joby Aero, Inc., Santa Cruz, CA (US)
Filed by Joby Aero, Inc., Santa Cruz, CA (US)
Filed on Dec. 28, 2023, as Appl. No. 18/398,795.
Claims priority of provisional application 63/477,491, filed on Dec. 28, 2022.
Prior Publication US 2024/0218814 A1, Jul. 4, 2024
Int. Cl. F01K 25/08 (2006.01); H01M 8/04014 (2016.01); H01M 8/04082 (2016.01)
CPC F01K 25/08 (2013.01) [H01M 8/04014 (2013.01); H01M 8/04201 (2013.01); H01M 2250/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fuel cell system, comprising:
a supply of hydrogen; and
a hydrogen expansion system comprising:
an aeolipile comprising a plurality of arms coupled to a shaft, each arm having a nozzle at an end thereof for expelling hydrogen to cause rotation of the shaft; and
a heat exchanger for receiving and expanding hydrogen from the supply of hydrogen, for provision to the plurality of arms of the aeolipile.