Patent · US Expired

Low-noise vacuum pump

US5145335A · kind A · utility

21Cited by

5References

7Claims

0Family size

Assignee

Leybold GmBH · DE

Inventors

Thomas Abelen · Cologne, DE
Hans-Peter Berges · Cologne, DE
Gustav Boley · Cologne, DE
Winfried Kaiser · Cologne, DE

Key dates

Filing date	May 24, 1991
Grant date	Sep 8, 1992
Priority date	—
Expiry date	May 24, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C23/008
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A vacuum pump includes a first pump housing defining a pumping chamber; a pump rotor received in the pumping chamber; a drive motor operatively connected to the pump rotor; an oil casing receiving the first pump housing; and a second pump housing surrounding the first pump housing and the drive motor.

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