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. 18, 2016
Filed:
Apr. 02, 2015
Applicant:
Thermo Finnigan Llc, San Jose, CA (US);
Inventors:
Assignee:
Thermo Finnigan LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/42 (2006.01); H01J 49/26 (2006.01); B01D 59/44 (2006.01); H01J 49/00 (2006.01); H01J 49/36 (2006.01); H01J 49/02 (2006.01);
U.S. Cl.
CPC ...
H01J 49/0031 (2013.01); H01J 49/022 (2013.01); H01J 49/36 (2013.01);
Abstract
The present invention provides a radio frequency (RF) power supply in a mass spectrometer. The power supply provides an RF signal to electrodes of a storage device to create a trapping field. The RF field is usually collapsed prior to ion ejection. In an illustrative embodiment the RF power supply includes a RF signal supply; a coil arranged to receive the signal provided by the RF signal supply and to provide an output RF signal for supply to electrodes of an ion storage device; and a shunt including a switch operative to switch between a first open position and a second closed position in which the shunt shorts the coil output.