Patent · US Expired

Method of producing a rotor for rotary slide-vane vacuum pumps, and a rotor produced by said method

US4561837A · kind A · utility

2Cited by

10References

11Claims

0Family size

Assignee

Leybold-Heraeus GmbH · DE

Inventors

Hanns-Peter Berges · Neunburg vorm Wald, DE
Hans-Peter Kabelitz · Cologne, DE

Key dates

Filing date	May 15, 1980
Grant date	Dec 31, 1985
Priority date	—
Expiry date	May 15, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49861
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A rotor for a rotary slide-vane vacuum pump and a method of producing same comprises providing two rotor sections, each having a shaft stub, a rotor portion and a plane or contact surface produced by lathing, forming axial slot portions for accommodate one or more slide vanes through the contact surfaces, assembling the two rotor sections by the use of an assembling jig and fixedly joining the sections together and finishing the external surfaces of the assembled rotor with respect to at least one of length and diameter while the rotor is held in one and the same fixture.

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