Electricity: circuit makers and breakers – Weight
Patent
1982-09-30
1984-11-20
Scott, J. R.
Electricity: circuit makers and breakers
Weight
200 86R, H01H 302
Patent
active
044840438
ABSTRACT:
An apparatus for monitoring the presence of a patient in a hospital bed including an elongated, thin, generally rectangular base member of insulating flexible material, such as high-density polyethylene foam, having a generally rectangular cutout opening therein, a rectangular, thin, electrically conductive member affixed to each surface of the base, the base serving to normally maintain the conductive elements spaced apart from each other, a plastic cover cemented to the exterior surface of each of the conductive elements, the edges of the plastic cover being sealed around the full periphery of the device, a cable having two conductors, one conductor being attached to each of the conductive members, the device being generally about 4 inches wide and 34 inches long so that it may be positioned under a patient in a hospital bed, the weight of the patient serving to distort the device so that the conductive members are in contact, providing a closed signal, and the device being sufficiently rigid so that in the absence of a patient the conductive members are not in contact, thereby the absence of a patient from a hospital bed can be indicated when the device is connected to suitable circuitry.
REFERENCES:
patent: 3478311 (1969-11-01), Czingula
patent: 4020482 (1977-04-01), Feldl
patent: 4086458 (1978-04-01), Dickey
patent: 4137116 (1979-01-01), Miller
patent: 4401896 (1983-08-01), Fowler et al.
Blaker Robert D.
Blaker, Jr. David G.
Musick Jeff L.
Bed-Check Corporation
Scott J. R.
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