Sliding component
US-9777840-B2 · Oct 3, 2017 · US
Seal ring
US11530749B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11530749-B2 |
| Application number | US-201917047369-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 16, 2019 |
| Priority date | May 17, 2018 |
| Publication date | Dec 20, 2022 |
| Grant date | Dec 20, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring for sealing a clearance between a rotary shaft and a housing includes multiple static pressure grooves provided at a sliding surface of the seal ring and arranged in a circumferential direction, the static pressure grooves being opened on a sealed fluid side and closed on an outer diameter side, a circumferential length of each of the static pressure grooves being shorter than a radial length of each of the static pressure grooves.
First claim
Opening claim text (preview).
The invention claimed is: 1. A seal ring for sealing a clearance between a rotary shaft and housing, comprising: multiple static pressure grooves provided at a sliding surface of the seal ring and arranged in a circumferential direction, the static pressure grooves being opened on a sealed fluid side and closed on an outer diameter side, a circumferential length of each of the static pressure grooves being shorter than a radial length of each of the static pressure grooves; multiple communication grooves each extending in the circumferential direction on the outer diameter side, each of the communication grooves respectively being in communication with two of the static pressure grooves adjoining each other in the circumferential direction; and multiple dynamic pressure grooves each opened on the sealed fluid side, each of the dynamic pressure groove respectively being provided between two of the static pressure grooves adjoining each other in the circumferential direction, wherein the static pressure grooves each has a depth which is in a range from 100 μm to 1 mm. 2. The seal ring according to claim 1 , wherein each of the static pressure grooves is formed linearly in a radiation direction. 3. The seal ring according to claim 1 , wherein the communication grooves together form a continuous annular path. 4. The seal ring according to claim 1 , wherein each of the static pressure grooves is formed deeper on an inner diameter side than on the outer diameter side. 5. The seal ring according to claim 2 , wherein each of the static pressure grooves is formed deeper on an inner diameter side than on the outer diameter side.
Assignees
Inventors
Classifications
with slip-ring pressed against a more or less radial face on one member · CPC title
- F16J15/3412Primary
with cavities (F16J15/3424 takes precedence) · CPC title
of sliding-contact bearings · CPC title
Grooves on a bearing surface for distributing or collecting the liquid · CPC title
Grooves for generating pressure · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11530749B2 cover?
- Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring for sealing a clearance between a rotary shaft and a housing includes multiple static pressure grooves provided at a sliding surface of the seal ring and arranged in a circumferential direction, the static pressure grooves being opened on a sealed fluid si…
- Who is the assignee on this patent?
- Eagle Ind Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16J15/3412. 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).