Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-02-16
1995-10-17
Hofsass, Jeffrey A.
Communications: electrical
Condition responsive indicating system
Specific condition
340573, 128886, 604361, G08B 2100
Patent
active
054594529
ABSTRACT:
A monitoring system for detecting urine includes an electric circuit for activating an indicator, having a break in continuity bordered by a pair of electrodes, a sheet of material for absorbing and retaining urine to permit the urine to provide a conductive path to complete the circuit and activate the indicator, two lead members attached to the sheet of material, the lead members being in a spaced apart relationship from each other, and a mechanism for snap fastening or magnetically fastening each electrode to one lead member. The mechanism for snap fastening includes a male or female snap fastener half attached to one electrode and a female or male snap fastener half attached to the sheet of material and in electrical contact with one lead member, wherein the male snap fastener half can be removably inserted into the female snap fastener half to establish electrical contact between the electrode and the lead member. A monitoring system for detecting the presence of a person in a bed includes an electric circuit for activating an indicator, two spaced apart heat sensors connected to the electric circuit to measure the temperature differential between two different points on the bed, one sensor being positioned at a location on the bed against which a person lying on the bed would recline, and the other the sensor being positioned at a location remote from the heat generated by the person, to indicate by the magnitude of the temperature differential whether a person is occupying the bed.
REFERENCES:
patent: 3971371 (1976-07-01), Bloom
patent: 4191950 (1980-03-01), Levin et al.
patent: 5036859 (1991-08-01), Brown
patent: 5137033 (1992-08-01), Norton
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