Patent · US Expired

Flow pump, especially for supplying fuel from a fuel tank of a motor vehicle

US5904468A · kind A · utility

11Cited by

6References

23Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Dobler · Gerlingen, DE
Michael Huebel · Gerlingen, DE
Willi Strohl · Beilstein, DE
Jochen Rose · Hemmingen, DE

Key dates

Filing date	Jul 11, 1997
Grant date	May 18, 1999
Priority date	—
Expiry date	Jul 11, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/188
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The flow pump for supplying a fuel in a motor vehicle includes a pump housing (10) provided with a pump chamber (11) bounded by two radially-extending side walls (12,13) axially spaced from each other and connected with each other by a peripheral wall (14) and a rotatable impeller (24) arranged in the pump chamber (11) coaxial to a pump axis (22). The impeller (24) includes circumferentially spaced radial impeller blades (29) bounding axially open impeller chambers (31) and an outer ring (30) connecting the impeller blades (29) with each other. The two radially-extending side walls (12,13) are provided with respective groove-like side channels (20,21) concentric to the pump axis (22) and open to the pump chamber (11). Each radially-extending side wall (12,13) has an intervening portion (23) between a channel end (212) and a channel beginning (211). The outer ring (30) and the peripheral wall (14) bound a radial space (32,32') between them and the outer ring (30) includes a circumferential radial gap (34) or a plurality of throughgoing passages (37) for providing a fluid flow between a number, advantageously all, of the impeller chambers (31) and the radial space (32,32').

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