发明名称 |
Sensors for detecting and locating fluids |
摘要 |
Devices for detecting and obtaining information about an event, for example the presence of a liquid, which comprise (1) a swellable member which swells upon occurrence of the event and (2) a restraining member which, when the swellable member swells, restricts movement of the swellable member and thus causes the impedance of the device to change. In a preferred embodiment the device comprises two elongate conductors helically wrapped around a support core, a swellable, conductive polymer member surrounding the conductors. Occurrence of an event causes the swellable material to swell and form a conductive bridge between the conductors.
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申请公布号 |
US5101657(A) |
申请公布日期 |
1992.04.07 |
申请号 |
US19900519975 |
申请日期 |
1990.05.07 |
申请人 |
RAYCHEM CORPORATION |
发明人 |
LAHLOUH, JOHN;STEWART, RAY F.;WASLEY, ROBERT S.;HAUPTLY, PAUL D.;WELSH, LAURENCE M. |
分类号 |
G01M3/04;G01M3/16;G08B23/00 |
主分类号 |
G01M3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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