Patent application number | Description | Published |
20090140495 | Shaft Seal - A shaft seal which is in particular suitable for vacuum pumps, such as screw pumps, comprises an inner sealing ring ( | 06-04-2009 |
20090148284 | Vacuum Pump - A vacuum pump for producing a vacuum in a space which is to be evacuated comprises a housing ( | 06-11-2009 |
20100086883 | METHOD FOR REACTING SELF-IGNITING DUSTS IN A VACUUM PUMP DEVICE - Into a vacuum pump device arranged for suctional intake of a process gas ( | 04-08-2010 |
20120034110 | VACUUM PUMP HOUSING AND SET OF COOLING ELEMENTS FOR A VACCUM PUMP HOUSING - A vacuum pump housing comprises a pump housing formed in a pumping chamber. In the pumping chamber, pumping elements are arranged. On a planar outer side of the pump housing, a cooling element is arranged. The cooling element comprises at least one cooling channel which is open towards the outer side of the pump housing. The disclosure further relates to a set of cooling elements comprising a plurality of cooling elements having different outer dimensions. | 02-09-2012 |
20120189478 | VACUUM PUMP SYSTEM - A vacuum pump system comprises two vacuum pumps which are connected to each other. In order to create vacuum pump system of a more compact size, the connection between the two vacuum pumps is performed via connection elements directly attached to the pump housing and forming connection sites, and the outlet flange of the upper pump is placed directly on the inlet flange of the lower pump without thereby causing a transmission of larger forces or moments. | 07-26-2012 |
20120315165 | VACUUM PUMP - A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter. | 12-13-2012 |
20140205483 | ROOTS PUMP - A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages. | 07-24-2014 |