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Threaded rebar manufacturing process and system
US9010165B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9010165-B2 |
| Application number | US-201113008751-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 18, 2011 |
| Priority date | Jan 18, 2011 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
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Embodiments of the invention comprise forming a billet from molten steel and hot rolling the billet to reduce the cross sectional area of the billet. Thereafter, the billet is hot rolled into a lead pass bar having a cross-sectional area comprising a reduced width dimension located adjacent to the center longitudinal axis of the bar. In one embodiment of the invention, the billet can be formed into a lead pass bar having a cross-sectional area in the shape of an hourglass or peanut by feeding the billet through a first set of rolls. After the lead pass bar is formed, it is passed through a second set of rolls in order to form the substantially continuous threaded rebar without longitudinal ribs. The cross-sectional area of the lead pass bar helps to produce a substantially continuous threaded rebar product without longitudinal ribs using standard rebar manufacturing tooling and equipment.
First claim
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What is claimed is: 1. A method of manufacturing threaded rebar comprising: providing a lead pass bar comprising a body extending along a longitudinal axis, wherein at least one portion of the body has a cross-section defining a plane that intersects the longitudinal axis, wherein a first part of the plane has a first width, a second part of the plane has a second width, and a third part of the plane has a third width, wherein the first width is less than the second width and the…
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Frequently asked questions
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- What does patent US9010165B2 cover?
- Embodiments of the invention comprise forming a billet from molten steel and hot rolling the billet to reduce the cross sectional area of the billet. Thereafter, the billet is hot rolled into a lead pass bar having a cross-sectional area comprising a reduced width dimension located adjacent to the center longitudinal axis of the bar. In one embodiment of the invention, the billet can be formed …
- Who is the assignee on this patent?
- Griggs Francis W, Dollar James R, Morris Brent Michael, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification E04C5/03. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Apr 21 2015 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).