发明名称 |
Silverware detector |
摘要 |
A device that easily fits on a refuse container and will sound an audible alarm when silverware that has been magnetized and likely hidden within other refuse falls through a sensing cavity on its way to the refuse container. This device will not trigger on any other metallic or non-metallic material due to its sensing of only passing magnetic fields. Silverware material conducive to magnetization can be easily magnetized and will retain such characteristics for a long period of time making it a practical way to differentiate silverware from other metallic refuse. The device also uses a sensing switch that activates the same audible alarm when an attempt is made to bypass the unit by removing it from the refuse container. A key switch provides security that enables alarm reset only by authorized personnel. A low battery indicator is provided by the pulsing of the audible alarm. The unit is portable, low maintenance, and requires no adjustments.
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申请公布号 |
US6667689(B1) |
申请公布日期 |
2003.12.23 |
申请号 |
US20010961486 |
申请日期 |
2001.09.24 |
申请人 |
STEFFEN RONALD W;NELSON MICHAEL G. |
发明人 |
STEFFEN RONALD W;NELSON MICHAEL G. |
分类号 |
B07C99/00;B65F1/16;(IPC1-7):G08B13/14 |
主分类号 |
B07C99/00 |
代理机构 |
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代理人 |
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地址 |
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