Jet-type direct-fired preheating system
US-2026085374-A1 · Mar 26, 2026 · US
Sealing device
US2020040425A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020040425-A1 |
| Application number | US-201816603905-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 29, 2018 |
| Priority date | Apr 13, 2017 |
| Publication date | Feb 6, 2020 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A sealing device is installed in heating treatment equipment through which a steel strip passes, the device including a rotary damper which is placed above the steel strip so as to be in contact with the steel strip, and a roll which is placed below the steel strip so that the roll opposes the rotary damper to form a pair consisting of the rotary damper and the roll opposing each other, the steel strip passing through a gap, which is formed between the rotary damper and the roll opposing each other, in which two pairs each of which is the pair consisting of the rotary damper and the roll opposing each other are arranged in tandem in a moving direction of the steel strip in the heating treatment equipment, and an inert gas is fed into a space defined by the two pairs arranged in tandem.
First claim
Opening claim text (preview).
1 - 5 . (canceled) 6 . A sealing device installed in heating treatment equipment through which a steel strip passes, the device comprising: a rotary damper placed above the steel strip to be in contact with the steel strip; and a roll placed below the steel strip so that the roll opposes the rotary damper to form a pair consisting of the rotary damper and the roll opposing each other, the steel strip passing through a gap formed between the rotary damper and the roll opposing each other, wherein two pairs each of which is the pair consisting of the rotary damper and the roll opposing each other are arranged in tandem in a moving direction of the steel strip in the heating treatment equipment, and an inert gas is fed into a space defined by the two pairs arranged in tandem. 7 . The sealing device according to claim 6 , wherein the rotary damper has holes arranged in a width direction of the steel strip and through which the inert gas is sprayed onto the steel strip. 8 . The sealing device according to claim 6 , wherein a pressure of the inert gas in the space is 5 mmH 2 O to 100 mmH 2 O. 9 . The sealing device according to claim 6 , wherein the sealing device is placed in a CVD treatment furnace in the heating treatment equipment. 10 . The sealing device according to claim 6 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 11 . The sealing device according to claim 7 , wherein a pressure of the inert gas in the space is 5 mmH 2 O to 100 mmH 2 O. 12 . The sealing device according to claim 7 , wherein the sealing device is placed in a CVD treatment furnace in the heating treatment equipment. 13 . The sealing device according to claim 8 , wherein the sealing device is placed in a CVD treatment furnace in the heating treatment equipment. 14 . The sealing device according to claim 11 , wherein the sealing device is placed in a CVD treatment furnace in the heating treatment equipment. 15 . The sealing device according to claim 7 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 16 . The sealing device according to claim 8 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 17 . The sealing device according to claim 9 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 18 . The sealing device according to claim 11 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 19 . The sealing device according to claim 12 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 20 . The sealing device according to claim 13 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment. 21 . The sealing device according to claim 14 , wherein the sealing device is placed on each of an upstream side and a downstream side in the moving direction of the steel strip in the heating treatment equipment.
Assignees
Inventors
Classifications
for sheet metals · CPC title
the charge moving in a substantially straight path · CPC title
characterised by sealing means · CPC title
Diffusion of reactive gas to substrate · CPC title
Continuous furnaces for strip or wire · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2020040425A1 cover?
- A sealing device is installed in heating treatment equipment through which a steel strip passes, the device including a rotary damper which is placed above the steel strip so as to be in contact with the steel strip, and a roll which is placed below the steel strip so that the roll opposes the rotary damper to form a pair consisting of the rotary damper and the roll opposing each other, the ste…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C21D9/565. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Feb 06 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).