Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-10-30
1998-01-27
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340521, 340552, 340546, 340566, 364706, 3647081, 36470501, G08B 1300
Patent
active
057126232
ABSTRACT:
A small-sized alarm device is hung on a doorknob to emit an alarm sound upon detecting that a human body contacts or approaches the doorknob. The alarm device has data processor, such as a calculator and the like, in addition to an alarm and an electro-optic display for displaying data processed by the data processor and information related to the operation of the alarm. To the alarm device is rotatably mounted a hanging member for hanging the alarm device on a doorknob. The hanging member is fit into the case of the alarm device when in not use or is erected from the case when the alarm device is hung on the doorknob.
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Kumai Hisao
Niimi Masazumi
Sano Takashi
Casio Computer Co. Ltd.
Hofsass Jeffery
Lee Benjamin C.
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