Butterfly Valve
US-2017370491-A1 · Dec 28, 2017 · US
Exhaust gas recirculation valve
US8944407B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8944407-B2 |
| Application number | US-200913320658-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 7, 2009 |
| Priority date | Jul 7, 2009 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
Official abstract text for this publication.
A rotation axis O 2 of a shaft 3 is attached thereto with double-offset in the X and Y directions with respect to a center line O 1 of a valve seat 2 . A bevel process is implemented on the outer peripheral surface of a valve 1 such that the valve 1 and the valve seat 2 is line-sealed, and the sign of the angles of inclination is switched between plus and minus at two places of the outer peripheral surface of the valve 1 deviated from the center of the axis. Further, a section where the angle of inclination is constant is prepared in each of the sections connecting the two places, while the other sections are smoothly connected to each other.
First claim
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The invention claimed is: 1. An exhaust gas recirculation valve including: a circular valve; a valve seat in which a circular opening that abuts against the outer peripheral surface of the valve is formed; and a shaft that rotates integrally with the valve to open and close the circular opening, wherein the valve is formed to be smoothly inclined such that the sign of the angles of inclination of outer peripheral surfaces switches between plus and minus at two places deviate…
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- What does patent US8944407B2 cover?
- A rotation axis O 2 of a shaft 3 is attached thereto with double-offset in the X and Y directions with respect to a center line O 1 of a valve seat 2 . A bevel process is implemented on the outer peripheral surface of a valve 1 such that the valve 1 and the valve seat 2 is line-sealed, and the sign of the angles of inclination is switched between plus and minus at two places of the o…
- Who is the assignee on this patent?
- Kurihara Akihiro, Zui Takuro, Hasegawa Satoru, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F16K1/222. 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).