| 发明名称 |
Pressure relief valve operation signal |
| 摘要 |
An indicator to show that a pressure relief device has operated. The indicator of the invention comprises a flexed spring which is released to move to an upright position when the pressure relief valve is caused to operate.
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| 申请公布号 |
US4074696(A) |
申请公布日期 |
1978.02.21 |
| 申请号 |
US19760735422 |
申请日期 |
1976.10.26 |
| 申请人 |
QUALITROL CORPORATION |
发明人 |
ROMANOWSKI, ROBERT F. |
| 分类号 |
F16K37/00;(IPC1-7):F16K37/00 |
主分类号 |
F16K37/00 |
| 代理机构 |
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