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:
Jul. 15, 2025
Filed:
Dec. 01, 2022
Meidensha Corporation, Tokyo, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
An arc shield with which a tubular body of a vacuum container is provided includes a tubular arc-shield body portion interposed between a fixed-side insulating portion and a movable-side insulating portion; a tubular arc shield fixed-side extension portion extending from the arc-shield body portion on the axially fixed side along the inner peripheral side of the fixed-side insulating portion; and a tubular arc shield movable-side extension portion extending from the arc-shield body portion on the axially movable side along the inner peripheral side of the movable-side insulating portion. Further, at least one of the arc shield fixed-side extension portion and the arc shield movable-side extension portion is shaped such that the portion becomes smaller in diameter in a stepped manner in the direction of extension thereof.