Patent · US Expired

Multi-channel regenerative pump

US6190119A · kind A · utility

5Cited by

16References

13Claims

0Family size

Assignee

Roy E. Roth Company · US

Inventors

Peter Roth · Immenstadt im Allgäu, DE
Bruce C. Wright · Davenport, US
Paul E. Roth · South Lyon, US

Key dates

Filing date	Jul 29, 1999
Grant date	Feb 20, 2001
Priority date	—
Expiry date	Jul 29, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D5/006
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A turbine impeller pump assembly includes a rotating shaft and inboard and outboard casing members coupled together with each having cavity channels, and an annular recess, and an axial opening to receive the rotating shaft. Inboard and outboard liner members are structurally arranged to be received by the annular recesses in the casing members and an impeller member is positioned between the liner members and keyed for rotation with the shaft. The inboard and outboard liner members each have at least two flow channels structurally arranged to cooperate with the cavity channels to provide equal and opposite pressures on the impeller to maintain the impeller in alignment with respect to the liner members.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.