发明授权
- 专利标题： Devices for detecting levels
- 专利标题（中）： 用于检测电平的装置
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申请号： US124225申请日： 1980-02-25
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公开(公告)号： US4312225A公开(公告)日： 1982-01-26
- 发明人: David M. Williams
- 申请人： David M. Williams
- 专利权人： Williams David M
- 当前专利权人： Williams David M
- 优先权： GBX07552/79 19790303
- 主分类号： H01H17/12
- IPC分类号： H01H17/12 ; H01H35/18 ; G01F23/10
摘要：
A device is described for detecting the level of the material within a container such as a hopper comprising a cord (18) for suspending a thimble (38) from a balance arm (22) which in turn is suspended through the intermediary of an inclination sensitive switch (26).Modifications are illustrated in which the cord is suspended through a sealed aperture in a lid (40).Another embodiment of the invention comprises a cord (66) for suspending a thimble (38) from a balance arm (62) which is balanced by means of an adjustable tension spring (68) and when pivoted so as to actuate a switch (76).
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