The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2026
Filed:
Oct. 12, 2022
Nuovo Pignone Tecnologie-s.r.l., Florence, IT;
Massimiliano Ortiz Neri, Florence, IT;
Francesco Cangioli, Florence, IT;
Davide Biliotti, Florence, IT;
Duccio Fioravanti, Florence, IT;
Nuovo Pignone Tecnologie—S.r.l., Florence, IT;
Abstract
An expander-compressor system comprising an expander, a compressor and a shaft located in a casing which mechanically couples the expander and the compressor; the expander-compressor system comprises further a magnetic bearing which is positioned inside the casing and is arranged to act on the shaft. The magnetic bearing is cooled by a cooling fluid circuit arranged in a closed-loop configuration in order to avoid the release of cooling fluid to the environment and reduce the amount of cooling fluid required for cooling the one magnetic bearing. The expander-compressor system comprises further at least one dry gas seal arranged at the casing around a first end of the shaft and/or a second end of the shaft in order to avoid leakage of process gas to the cooling fluid circuit at the shaft. The cooling fluid circuit comprises pump or a blower, that may be internal and/or external to the casing.