Back-up ring system for elastomeric sealing elements
US-2024060386-A1 · Feb 22, 2024 · US
Sealing device
US9388705B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9388705-B2 |
| Application number | US-201314384504-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2013 |
| Priority date | Mar 12, 2012 |
| Publication date | Jul 12, 2016 |
| Grant date | Jul 12, 2016 |
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Abstract
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The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ring 2000 and a groove bottom surface of the annular groove 4100 , respectively. The outer peripheral ring 2000 is formed on its outer peripheral surface with a concave portion 2220 which extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sealing device which is fitted into an annular groove formed in an outer periphery of a shaft so as to seal an annular gap between said shaft and a housing which rotate relative to each other, thereby to hold a fluid pressure in a region to be sealed which is constructed such that the fluid pressure therein changes, comprising: an outer peripheral ring made of resin that is in intimate contact with a side wall surface of said annular groove at a low…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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 US9388705B2 cover?
- The sealing device includes: an outer peripheral ring 2000 that is in contact with a side wall surface of an annular groove 4100 at a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housing 5000 through which a shaft 4000 is inserted. An inner peripheral ring 3000 made of a rubber-like elastic body that is in contact with an inner per…
- Who is the assignee on this patent?
- Nok Corp
- What technology area does this patent fall under?
- Primary CPC classification F16J15/18. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jul 12 2016 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).