Pre-stressed steel sheet

US12220770B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-12220770-B2
Application numberUS-202017783709-A
CountryUS
Kind codeB2
Filing dateDec 10, 2020
Priority dateDec 11, 2019
Publication dateFeb 11, 2025
Grant dateFeb 11, 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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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

The present disclosure provides a pre-stressed steel sheet comprising: a base material; and a plurality of weld lines formed on the base materials, wherein the average spacing between each pair of the weld lines is equal to or greater than five times the width of the weld lines and equal to or less than half the width of the steel sheet.

First claim

Opening claim text (preview).

The invention claimed is: 1. A pre-stressed steel sheet, comprising: a base material; and a plurality of weld lines formed on the base material, wherein an average spacing between a weld line and an adjacent weld line among the plurality of weld lines is equal to or greater than five times a width of the weld lines and equal to or less than ½ times a width of the steel sheet, and wherein a number of the plurality of weld lines is 2×(L/W) or more, where L is a length of the steel sheet and W is the width of the steel sheet. 2. The pre-stressed steel sheet according to claim 1 , wherein the plurality of weld lines have higher strength than the base material. 3. The pre-stressed steel sheet according to claim 1 , wherein the base material has a thickness of 6 to 60 mm. 4. The pre-stressed steel sheet according to claim 1 , wherein the plurality of weld lines have a thickness of up to ¼ t from the surface of the base material, where t is a thickness of the steel sheet. 5. The pre-stressed steel sheet according to claim 1 , wherein the plurality of weld lines have a straight shape, a curved shape or a winding shape. 6. The pre-stressed steel sheet according to claim 1 , wherein the base material has a thickness of 8 to 40 mm. 7. The pre-stressed steel sheet according to claim 1 , wherein the base material has a thickness of 10 to 30 mm. 8. The pre-stressed steel sheet according to claim 1 , wherein the base material has a thickness of 12 to 25 mm. 9. The pre-stressed steel sheet according to claim 1 , wherein the plurality of weld lines have a curved shape. 10. The pre-stressed steel sheet according to claim 1 , wherein the plurality of weld lines have a winding shape.

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What does patent US12220770B2 cover?
The present disclosure provides a pre-stressed steel sheet comprising: a base material; and a plurality of weld lines formed on the base materials, wherein the average spacing between each pair of the weld lines is equal to or greater than five times the width of the weld lines and equal to or less than half the width of the steel sheet.
Who is the assignee on this patent?
Posco
What technology area does this patent fall under?
Primary CPC classification B23K9/042. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue Feb 11 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).