Patent ID: 9190252
Filing Date: 2015-11-17
Classification: H01J,Y10T

Abstract:
1. A method of manufacturing a multipolar electrode device, in particular a multipole, for use in a mass spectrometer, wherein the electrode device comprises at least one main filter and at least one pre- and/or postfilter, wherein the electrode device comprises several electrode assemblies wherein each electrode assembly comprises one or more rod-shaped electrode blanks and the following steps are carried out for the creation of the electrode assembly: a) connecting each of the electrode blanks with holding means, b) separating each electrode blank into two sections, whereby said sections are axially spaced apart from each other by a gap and the sections are maintained in a constant relative position to each other during and after the separation by the holding means, whereby this separation step is carried out as often as it is the intended number of the pre- and/or postfilters and wherein several electrode assemblies are joined together to the electrode device by connecting the holding means, c) providing insulating means and a carrier element as part of the holding means, connecting the insulating means to said electrode blank and connecting the carrier element to at least one insulator of the insulating means, wherein the at least one insulator is connected to both sections, so that the at least one insulator maintains the sections in the constant relative position to each other, and d) providing a recess or recesses in the electrode blank and/or the at least one insulator, whereby the recess or the recesses is or are arranged in such a way that the recess or the recesses is or are positioned between the at least one insulator and the gap and the gap is connected to the recess or the recesses.