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.:

US 7371991 B1

PDF
Full Text
Expired
Date of Patent:
May. 13, 2008

Filed:

Aug. 17, 2005
Applicants:

Etsuo Takeuchi, Tokyo, JP;

Akira Hatakeyama, Tokyo, JP;

Inventors:

Etsuo Takeuchi, Tokyo, JP;

Akira Hatakeyama, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 10/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Disclosed is a structure aimed to reduce the frequency of replacement of an insulating spacer arranged between grids of an ion beam irradiation device. More specifically, disclosed is a so-called insulating spacer arranged in order to maintain insulation between the grids, the insulating spacer having an annular groove in a portion composed of an annular, substantially plane portion opposed to a grid and a cylindrical portion being raised from the central portion of the annular, substantially plane portion and abutting the grid, with the annular groove being perpendicular to the plane and separating the peripheral portion of the annular portion from the cylindrical portion.


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Takeuchi, Etsuo. (2008). Iron beam irradiation device and insulating spacer for the device (U.S. Patent No. 7371991). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7371991

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