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:
Jan. 06, 2026
Filed:
Feb. 24, 2023
Sulzer Management Ag, Winterthur, CH;
Sulzer Management AG, Winterthur, CH;
Abstract
A multi-stage centrifugal liquid pump includes a housing, impellers, and an assembly to compensate axial forces in the multi-stage centrifugal liquid pump. The assembly includes a shaft arranged rotatably to the housing, a balancing drum arranged to the shaft inside the housing, the balancing drum having a first axial end surface and a second axial end surface, the first axial end surface in flow communication with a stage of the pump adjacent to the balancing drum, the balancing drum being a multistage balancing drum, including at least two drum sections, and a circumferential axial space arranged between the at least two drum sections, the drum sections having a first radius.