| 发明名称 |
DIFFERENTIAL PRESSURE SIGNAL DEVICE |
| 摘要 |
<p>Case 3519 DIFFERENTIAL PRESSURE SIGNAL DEVICE A differential pressure signal device employing an audible vibratory reed assembly having the property of being activated automatically upon being subjected to a predetermined energy level. The assembly is preferably all plastic and includes a unique rockable flapper valve that is automatically activated when the differential in pressure between two chambers reaches a predetermined level. The opening of said valve provides a large inrush of air that activates and operates the audible vibration of said reed until the differential in pressure is lowered below said predetermined level.</p> |
| 申请公布号 |
CA1158930(A) |
申请公布日期 |
1983.12.20 |
| 申请号 |
CA19810385581 |
申请日期 |
1981.09.10 |
| 申请人 |
ILLINOIS TOOL WORKS INC. |
发明人 |
BOYER, DAVID C.;RUEHL, WILLIAM E. |
| 分类号 |
D06F58/28;B01D46/42;D06F58/22;G01L13/00;G01L19/12;G10K7/00;(IPC1-7):G01L19/12 |
主分类号 |
D06F58/28 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
