Patent · US Expired

Ejector pump

US6619927B1 · kind B1 · utility

4Cited by

5References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Becker · Bad Hersfeld, DE
Johannes Dichmann · Rottenburg am Neckar, DE
Peter Marx · Hooksett, US

Key dates

Filing date	Dec 13, 2001
Grant date	Sep 16, 2003
Priority date	—
Expiry date	Jan 13, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M37/025
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An ejector pump for a delivery unit provided in a fuel tank of a motor vehicle has a nozzle produced integrally with a mixing tube. The mixing tube is shaped in the form of a tubular cylinder, so that virtually the entire ejector pump may be produced from plastic in a mold allowing axial demolding. The nozzle is therefore aligned,exactly with respect to the mixing tube. The ejector pump consequently has a particularly high efficiency.

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