Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-09-10
1995-04-18
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
340573, 340539, 455344, G08B 2100
Patent
active
054082226
ABSTRACT:
A device for warning when a person is submerged beneath water, comprising a timing circuit having first and second terminals and being responsive to a voltage applied to the first terminal for connecting the second terminal to the first terminal after a predetermined time interval and an alarm unit connected to the second terminal of the timing circuit. A normally open water-sensitive switch is provided for attaching to a part of the person's body which is normally above water and is coupled to the first terminal of the timing circuit. An electrical supply is coupled to the water-sensitive switch for applying the required voltage to the first terminal of the timing circuit when the water-sensitive switch is submerged beneath water. A normally deflated float may be worn by the person so as to be automatically inflated in response to the alarm signal.
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Yaffe Yacob
Zur Amos
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