| 发明名称 |
A SELAING MEANS FOR A BALL VALVE |
| 摘要 |
A ball valve wherein a rotatable ball controls the rate of fluid flow therethrough and is engaged by a sealing means which includes annular members of different materials and rigidity adjacently spaced to each other and engaging the ball.
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| 申请公布号 |
US3649035(A) |
申请公布日期 |
1972.03.14 |
| 申请号 |
USD3649035 |
申请日期 |
1969.12.30 |
| 申请人 |
TEXACO INC. |
发明人 |
WILLIAM J. GRAHAM |
| 分类号 |
F16K5/06;(IPC1-7):F16J15/00 |
主分类号 |
F16K5/06 |
| 代理机构 |
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代理人 |
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