Sealing device
US-11187325-B2 · Nov 30, 2021 · US
Sealing apparatus
US11530748B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11530748-B2 |
| Application number | US-201916705369-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2019 |
| Priority date | Jan 23, 2019 |
| Publication date | Dec 20, 2022 |
| Grant date | Dec 20, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
The shape of a back-up ring is a V-shaped sectional shape. In the back-up ring, an annular concave surface part having a V-shaped sectional shape serving as a valley toward a high-pressure side is formed on a surface part on a side that faces a seal ring, and an annular convex surface part having a V-shaped sectional shape serving as a peak toward a low-pressure side is formed on a surface part opposite to the side that faces the seal ring. When a high pressure is applied from a high-pressure side, the back-up ring is deformed such that V-shaped angles of an annular concave surface part and an annular convex surface part are increased as the annular concave surface part is pressed against the seal ring, and is brought into close contact with a housing and a shaft.
First claim
Opening claim text (preview).
What is claimed is: 1. A high-pressure sealing apparatus that is mounted on an annular groove provided in at least one of two members of an outer member and an inner member to seal an annular gap between the two members, the sealing apparatus comprising: a seal ring that is mounted on a high-pressure side within the annular groove; and a back-up ring that is mounted closer to a low-pressure side than the seal ring within the annular groove and is made of a material harder than t…
Assignees
Inventors
Classifications
- F16J15/181Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F16J15/166Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US11530748B2 cover?
- The shape of a back-up ring is a V-shaped sectional shape. In the back-up ring, an annular concave surface part having a V-shaped sectional shape serving as a valley toward a high-pressure side is formed on a surface part on a side that faces a seal ring, and an annular convex surface part having a V-shaped sectional shape serving as a peak toward a low-pressure side is formed on a surface part…
- Who is the assignee on this patent?
- Arai Seisakusho Co Ltd, Keihin Corp, Hitachi Astemo Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16J15/181. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 20 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 10 related publications on this page (citations in our corpus or others sharing the same primary CPC).