Patent · US Expired

Cooling water pump

US6450786B1 · kind B1 · utility

7Cited by

14References

16Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Koch · Mainz, DE
Stefan Kotthaus · Baden-Baden, DE
Joerg Wolf · Karlsruhe, DE

Key dates

Filing date	Nov 14, 2000
Grant date	Sep 17, 2002
Priority date	—
Expiry date	Nov 14, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/3493
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a pump, particularly for cooling water, with an impeller wheel (2) that is supported so that it can rotate in a pump chamber (6), an excitation device (12) for driving the impeller wheel (12) to rotate, and a control circuit (19) for the excitation device (12), the control circuit (19) and the excitation device (12) are thermally separated from one another by the pump chamber (6). The waste heat of the excitation device (12) is removed by the fluid circulating in the pump chamber (6) to the extent that the control circuit (19) is prevented from overheating.

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