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.

Date of Patent:
Nov. 30, 2021

Filed:

Feb. 07, 2018
Applicant:

Shimadzu Corporation, Kyoto, JP;

Inventors:

Manabu Ueda, Kyoto, JP;

Kota Nagasao, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/42 (2006.01); H01J 49/40 (2006.01); H01J 49/24 (2006.01); H01J 49/10 (2006.01);
U.S. Cl.
CPC ...
H01J 49/4215 (2013.01); H01J 49/10 (2013.01); H01J 49/24 (2013.01); H01J 49/4225 (2013.01);
Abstract

Four rod electrodes (to) for separating ions according to a mass-to-charge ratio are held by a rod holder (). The rod holder () is placed on a metal holder sustaining stand () provided on a bottom surface of a vacuum housing (), and is fixed while being pressed by a fixation band () fixed to the holder sustaining stand () with screws (). The fixation band () has a coating film layer () formed by a black nickel plating process on the entire surface of a main member () made from phosphor bronze. The coating film layer () has high emissivity, and thus heat transferred from the rod holder () to the fixation band () is efficiently radiated into the vacuum housing (). Therefore, heat generated in the rod holder () due to dielectric loss is efficiently dissipated, and deformation of the rod holder can be reduced.


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