Thread patterns for sampler cone
AssigneePerkinElmer Scientific Canada ULC
InventorHamid Badiei
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a thread pattern of a sampler cone preferably used to seal an interface region of an ICP-MS instrument. The thread design seeks to provide a thread pattern with a smaller total threaded area on the outer sidewall of the sampler cone to decrease the amount of engagement between the threads and the system. The thread pattern may comprise unthreaded regions circumferentially arranged around the shaft of the sampler cone. The thread pattern may also comprise varying thread heights to allow fewer wear surfaces on the sampler cone to decrease the likelihood of galling.
Claims20
A sampler cone for a mass spectrometry instrument comprising:
- a flange defining a first side and a second side opposite the first side;
- a cone-shaped tip disposed at the first side of the flange and defining an orifice configured to permit passage of at least a portion of an ion sample;
- a threaded shaft disposed at the second side of the flange and defining an outer surface, wherein the threaded shaft comprises:
- a plurality of threaded regions circumferentially disposed on an outer surface of the threaded shaft;
- and
- at least one unthreaded region disposed on the outer surface of the threaded shaft between individual threaded regions of the plurality of threaded regions.
A sampler cone for a mass spectrometry instrument comprising a threaded shaft comprising alternating threaded regions and unthreaded regions circumferentially disposed around an outer surface of the threaded shaft.
A sampler cone for a mass spectrometry instrument comprising:
- a flange defining a first side and a second side opposite the first side;
- a cone-shaped tip disposed at the first side of the flange and defining an orifice configured to permit passage of at least a portion of an ion sample;
- a threaded shaft disposed at the second side of the flange and defining an outer surface, wherein the threaded shaft comprises:
- a plurality of threaded regions circumferentially disposed on an outer surface of the threaded shaft, wherein each threaded region of the plurality of thread regions comprise a plurality of threads each having a thread height that increases from a first thread height to a second thread height between a first circumferential position of the threaded shaft and second circumferential position of the threaded shaft;
- a plurality of unthreaded regions disposed on the outer surface of the threaded shaft between individual threaded regions of the plurality of threaded regions;
- and
- at least one continuous thread circumferentially disposed around the outer surface of the threaded shaft;
- wherein the plurality of threaded regions are axially disposed between the at least one continuous thread and the flange;
- and
- wherein a first unthreaded region of the plurality of unthreaded regions is disposed between a first threaded region of the plurality of threaded regions and a second threaded region of the plurality of threaded regions and a second unthreaded region of the plurality of unthreaded regions is disposed between the second threaded region and a third threaded region of the plurality of threaded regions.
Dependencies are inferred from the claim text.