Electronic Expansion Valve
US-2024410495-A1 · Dec 12, 2024 · US
Decompression valve
US8944097B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8944097-B2 |
| Application number | US-201013257853-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 10, 2010 |
| Priority date | Mar 30, 2009 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
In a decompression valve, a valve mechanism housed in a body has a valve body that can be seated on a valve seat facing a valve chamber into which high pressure fluid is introduced, and a valve shaft that has one end linked to a pressure receiving member operable in association with pressure of a decompression chamber communicating with a valve hole surrounded by the valve seat and that extends through the valve hole while having the other end facing a back pressure chamber communicating with the decompression chamber, and the valve body is fitted around the outer periphery of the valve shaft. The valve body ( 36 ) is fitted around the outer periphery of the valve shaft ( 35 ) while allowing circulation of fluid between the valve chamber ( 32 ) and the back pressure chamber ( 65 ) via a space between the valve body ( 36 ) and the valve shaft ( 35 ), and an annular seal member ( 46 ) present between the valve chamber ( 32 ) and the back pressure chamber ( 65 ) is disposed between the outer periphery of the valve body ( 36 ) and a guide member ( 30 ) fixed to the body ( 16 ) so as to guide axial movement of the valve shaft ( 35 ). Accordingly, it is possible to reduce a number of seal members for providing sealing between a valve chamber and a decompression chamber and thus to reduce the cost.
First claim
Opening claim text (preview).
The invention claimed is: 1. A decompression valve in which a valve mechanism housed in a body comprises a valve body that can be seated on a valve seat facing a valve chamber into which high pressure fluid is introduced, and a valve shaft that has one end linked to a pressure receiving member operable in association with pressure of a decompression chamber communicating with a valve hole surrounded by the valve seat and that extends through the valve hole while having the other en…
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Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8944097B2 cover?
- In a decompression valve, a valve mechanism housed in a body has a valve body that can be seated on a valve seat facing a valve chamber into which high pressure fluid is introduced, and a valve shaft that has one end linked to a pressure receiving member operable in association with pressure of a decompression chamber communicating with a valve hole surrounded by the valve seat and that extends…
- Who is the assignee on this patent?
- Yamamoto Hiroaki, Keihin Corp
- What technology area does this patent fall under?
- Primary CPC classification F16K1/36. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 03 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).