Patent Number: 6,250,896

Title: Pump for a cryogenic liquid and pump unit and distillation column which are equipped with such a pump

Abstract: A pump for a cryogenic liquid, in particular liquid oxygen, includes a hydraulic motor which is supplied with a motor liquid under pressure and drives a wheel for pumping the cryogenic liquid, and relative sealing device preventing contamination of the cryogenic liquid by the motor liquid.

Inventors: Lehman; Jean Yves (Maisons Alfort, FR)

Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

International Classification: F04D 13/04 (20060101); F04D 13/02 (20060101); F04D 29/08 (20060101); F04D 29/10 (20060101); F25J 3/04 (20060101); F04B 001/04 ()

Expiration Date: 06/26/2018