Patent · US Expired

Connection between a rotor hub and a shaft of an electric motor of an electrically driven air pump

US6039536A · kind A · utility

8Cited by

5References

3Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Gunter Van De Venne · Mönchengladbach, DE
Frank Kemmerling · Grevenbroich, DE
Michael Bonse · Düsseldorf, DE
Klaus Muckelmann · Hilden, DE
Rainer Peters · Goch, DE

Key dates

Filing date	Sep 30, 1998
Grant date	Mar 21, 2000
Priority date	—
Expiry date	Sep 30, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/263
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An improvement in an electrical air pump having a housing with a pump mechanism at one end and an electric motor at the other end. The pump mechanism has at least one lightweight pump impeller made of plastic whose hub is press-fit on a shaft of the electric motor. The hub is provided with a plurality of grooves distributed around a bore in the hub which receives the motor shaft. The grooves form spaces between an inner surface of the hub and an outer surface of the shaft and the spaces are filled with an adhesive to bond the hub to the shaft. The grooves extend longitudinally or spirally along the entire length of the hub. The grooves are relatively shallow and have a depth of approximately 0.05 mm.

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