Copper alloy containing tin, method for producing same, and use of same
US-2019062876-A1 · Feb 28, 2019 · US
Copper alloy fastener element and slide fastener
US11246382B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11246382-B2 |
| Application number | US-202017085256-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 30, 2020 |
| Priority date | Jul 26, 2016 |
| Publication date | Feb 15, 2022 |
| Grant date | Feb 15, 2022 |
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- Title
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Abstract
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Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a β phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a β phase at a ratio of 10% or less.
First claim
Opening claim text (preview).
What is claimed is: 1. A copper alloy fastener element comprising a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38% by mass; a dendrite structure; and a β phase at a ratio of 10% or less. 2. The copper alloy fastener element according to claim 1 , wherein the base material contains from 34 to 38% by mass of Zn. 3. The copper alloy fastener element according to claim 1 , wherein the copper alloy fastener comprises: a pair of leg portions for being fixed by sandwiching to a core cord portion provided on one side edge of a fastener tape; a crotch portion for connecting the leg portions; and a head portion provided from the crotch portion in a direction opposite to the leg portions, the head portion comprising an engaging concave portion and an engaging convex portion, and wherein the base material on an inner side surface of the crotch portion to be in contact with the core cord portion has at least the dendrite structure. 4. The copper alloy fastener element according to claim 1 , wherein the ratio of the β phase in the base material is from 2 to 10%. 5. The copper alloy fastener element according to claim 1 , wherein the base material has been produced through an annealing step under heating conditions where a diffusion distance of copper is from 0.5 to 3.0 nm, after casting. 6. A fastener chain comprising at least one copper alloy fastener element according to claim 1 . 7. A slide fastener comprising the fastener chain according to claim 6 . 8. An article comprising the slide fastener according to claim 7 . 9. The copper alloy fastener element according to claim 1 , wherein the ratio of the β phase in the base material is 8% or less.
Assignees
Inventors
Classifications
Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums · CPC title
- A44B19/06Primary
with substantially rectangular members having interlocking projections and pieces · CPC title
of copper or alloys based thereon · CPC title
Details · CPC title
of devices for fastening or securing purposes · CPC title
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- What does patent US11246382B2 cover?
- Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a β phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a β phase at a ratio of 10% or less.
- Who is the assignee on this patent?
- Ykk Corp
- What technology area does this patent fall under?
- Primary CPC classification A44B19/06. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 15 2022 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).