Leybold Aktiengesellschaft

Leybold Vakuum Gmbh

Thomas Abelen

Peter Muller

Lutz Arndt

Winfried Kaiser

Rudi Widt

Dieter Vorberg

Gustav Boley

Hans-Peter Berges

The invention relates to a chamber for the detection of leaks on foils (). Said chamber comprises two frames () which are connected together in an articulated manner, foils () which are mounted on said frames, a test chamber () composed of the foils, a seal () arranged between the frames and at least one bore hole (), preferably several bore holes, in at least one of the two frames (), which can be connected to the inlet of a vacuum pump (). In order to improve the chamber's closing features, said chamber comprises an edge zone () wherein a vacuum can be created independently of the test chamber () and into which said bore holes () open out.

Foil leak detection chamber

Oil-sealed vane-type rotary vacuum pump with an oil pump

Oil-sealed vane-type rotary vacuum pump with oil feed

Vacuum pump with a gas ballast device

Integrated oil pump rotor and coupling piece for an oil-sealed vacuum

A two-stage rotary vane vacuum pump includes a pre-vacuum stage having a pre-vacuum pumping chamber and an outlet valve; a main oil sump; and a first oil conduit having a first opening communicating with the main oil sump and a second opening communicating with the pre-vacuum pumping chamber. The first opening is located at a level below an operational oil level in the main oil sump. There is further provided an intermediate oil sump situated at a level above the outlet valve and being arranged for receiving oil from the pre-vacuum pumping chamber; and a second oil conduit leading from the intermediate oil sump to components of the vacuum pump to be supplied with oil. All such components are situated at a level below the intermediate oil sump.

Method and apparatus for supplying oil to a vacuum pump

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.

Low-noise vacuum pump

Growing community of inventors

Cologne, Germany

Thomas Abelen