US 11,965,624 B2
Compression apparatus and filling station comprising such an apparatus
Guillaume Petitpas, Jouy-en-Josas (FR); and Cyril Benistand-Hector, Sassenage (FR)
Assigned to L'Air Liquide, Societe Anonyme Pour l'Etude Et l'Exploitation des Procedes Georges Claude, Paris (FR)
Filed by L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Paris (FR)
Filed on Apr. 23, 2021, as Appl. No. 17/238,633.
Claims priority of application No. FR 2004039 (FR), filed on Apr. 23, 2020.
Prior Publication US 2021/0332950 A1, Oct. 28, 2021
Int. Cl. F17C 5/04 (2006.01); B67D 7/36 (2010.01); B67D 7/54 (2010.01); B67D 7/78 (2010.01); F04B 37/08 (2006.01); F04B 39/02 (2006.01)
CPC F17C 5/04 (2013.01) [B67D 7/36 (2013.01); B67D 7/54 (2013.01); B67D 7/78 (2013.01); F04B 37/08 (2013.01); F04B 39/0276 (2013.01); F17C 2221/012 (2013.01); F17C 2223/0161 (2013.01); F17C 2227/0164 (2013.01); F17C 2227/0337 (2013.01); F17C 2265/063 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for compressing cryogenic fluid in at least one compression stage comprising: at least one piston and at least one sleeve delimiting at least one compression chamber; a shaft that is able to move in translation along a longitudinal axis (A) . . . the shaft also comprising at least one linking element made of material that is less thermally conductive than a constituent material of the shaft,... characterized in that, in the portion of reduced cross section, the reduced cross section is reduced by 30 to 85% compared with a cross section of the rest of the shaft, wherein the at least one linking element comprises at least one cable.