Patent · US Expired

Tube pump

US6175173A · kind A · utility

17Cited by

19References

11Claims

0Family size

Assignee

Wilo AG · DE

Inventors

Waldemar Stephan · Dortmund, DE
Hansjurgen Kech · Herdecke, DE
Albert Genster · Marl, DE

Key dates

Filing date	Sep 14, 1999
Grant date	Jan 16, 2001
Priority date	—
Expiry date	Sep 14, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH02K9/19
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A centrifugal pump has a housing with intake and discharge fittings at axially opposite ends. The electronic motor is supported on ribs within the pump housing and the motor casing is closed by the electronic control circuit for the motor which seals the motor against the pump liquid. The coolant thus flows around the electric motor and its control circuit.

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