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:
Aug. 12, 2014
Filed:
Mar. 10, 2010
Laurent Ducimetiere, Annecy, FR;
Cyrille Nomine, Annecy, FR;
Jean-eric Larcher, Delle, FR;
Adixen Vacuum Products, Annecy, FR;
Abstract
An ionization cell for a mass spectrometer () includes: an ionization housing () having a first and a second electron input groove () and one side () of which has an output groove () for passing ionized particles () therethrough, a first working filament () placed opposite the first electron input groove () and intended to be supplied to produce an electron beam (), and a second backup filament () placed opposite the second electron input groove () and intended to be supplied in the event the first working filament () fails so as to produce the electron beam, the input groove () being placed outside a front region (F) located opposite the first input groove (). The invention also relates to a leak detector with a mass spectrometer, which includes such an above-described ionization cell.