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US 6,441,370 B1Granted
Linear multipole rod assembly for mass spectrometers
AssigneeThermo Finnigan LLC
InventorsMukul Khosla, Berg Tehlirian
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Abstract
A multiple-pole electrode assembly is disclosed for use in mass spectrometers or other applications such as ion traps or ion guides. The disclosed apparatus provides a rod mounting and connection assembly in which equally spaced rectangular rods are embedded in spaced, dimensionally stable insulating materials. This structure is more conveniently and inexpensively manufactured than previously available multiple pole electrode assemblies.
Claims9
A multipole rod assembly for use in mass spectrometers comprising:
- a plurality of elongated rectangular aligned spaced rods having facing surfaces, and
- at least one molded rod support member embedding and supporting said rod assembly in spaced aligned relationship, said support member comprising an insulating material having a coefficient of thermal expansion substantially equal to that of the spaced rods.
Dependencies are inferred from the claim text.