The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2010
Filed:
Jun. 09, 2005
Martin Nicholas Stuart, Shoreham-By-Sea, GB;
David John Goodwin, Crawley, GB;
Ian Olsen, Crawley, GB;
Martin Nicholas Stuart, Shoreham-By-Sea, GB;
David John Goodwin, Crawley, GB;
Ian Olsen, Crawley, GB;
Edwards Limited, Crawley, West Sussex, GB;
Abstract
A differentially pumped mass spectrometer system comprises a mass spectrometer having first and second pressure chambers through which, during use, ions are conveyed along a path. A pump assembly () for differentially evacuating the chambers () is attached to the mass spectrometer. The pump assembly comprises a housing () attached to the mass spectrometer and a cartridge () inserted into the housing. The cartridge has a plurality of inlets () each for receiving fluid from a respective pressure chamber () and a pumping mechanism () for differentially pumping fluid from the chambers. The cartridge is inserted into the housing such that the pumping mechanism () is inclined relative to the ion path (), but with the cartridge protruding into the mass spectrometer to such an extent that at least one of the inlets () at least partially protrudes into its respective chamber () without crossing the ion path.