Wall bushing

US12374474B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-12374474-B2
Application numberUS-202118020964-A
CountryUS
Kind codeB2
Filing dateJun 3, 2021
Priority dateAug 12, 2020
Publication dateJul 29, 2025
Grant dateJul 29, 2025

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A wall bushing for high voltage application is presented. The wall bushing includes a grounded shield. The grounded shield includes a grading ring in a distal end thereof. The grading ring has an elliptic cross section with conjugate diameters, wherein a major diameter of the conjugate diameters is arranged in an axial direction of the grounded shield and a minor diameter of the conjugate diameters is arranged in a radial direction of the grounded shield. The major diameter is larger than the minor diameter.

First claim

Opening claim text (preview).

The invention claimed is: 1. A wall bushing for high voltage application, the wall bushing comprising a grounded shield, the grounded shield comprising a grading ring in a distal end thereof, the grading ring having an elliptic cross section with conjugate diameters, wherein a major diameter of the conjugate diameters is arranged in an axial direction of the grounded shield and a minor diameter of the conjugate diameters is arranged in a radial direction of the grounded shield, whe…

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What does patent US12374474B2 cover?
A wall bushing for high voltage application is presented. The wall bushing includes a grounded shield. The grounded shield includes a grading ring in a distal end thereof. The grading ring has an elliptic cross section with conjugate diameters, wherein a major diameter of the conjugate diameters is arranged in an axial direction of the grounded shield and a minor diameter of the conjugate diame…
Who is the assignee on this patent?
Hitachi Energy Ltd
What technology area does this patent fall under?
Primary CPC classification H01B17/44. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Jul 29 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).