Patent · US Expired

Pump with drive motor

US5088899A · kind A · utility

19Cited by

1References

4Claims

0Family size

Assignee

Arthur Pfeiffer Vakummtechnik Wetzlar GmbH · US

Inventors

Armin Blecker · Aßlar, DE
Heinrich Lotz · Wetzlar, DE
Helmut OCHS · Löhnberg, DE
Horst Reuschling · Neu-Ulm, DE

Key dates

Filing date	Nov 9, 1990
Grant date	Feb 18, 1992
Priority date	—
Expiry date	Nov 9, 2010

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/14
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A pump for conveying liquids and gases is formed by a drive motor having a stator (1) and a rotor (2). Helically shaped conveying grooves (3) are formed in the rotor (2) so that the rotor also serves as the shaft for the pump.

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