Apparatus in medicine for the monitoring and or recording of the

Details Apparatus in medicine for the monitoring and or recording of the Apparatus in medicine for the monitoring and or recording of the

1980-03-10

1982-03-23

Michell, Robert W.

Surgery

Truss

Pad

128714, 128722, 128782, 340562, A61B 510

Patent

active

043207669

ABSTRACT:
A capacitive motion sensor placed under a mattress or the like for monitoring the movements of a person. The sensor uses an active layer consisting of two courses of dielectric material placed in contact with one another. Movements of a person on top of the mattress cause the courses to move relative to one another, thereby generating an electric change in the active layer which is detected by a pair of spaced elements which form a capacitive antenna means.

REFERENCES:
patent: 3572316 (1971-03-01), Vogelman et al.
patent: 3821491 (1974-06-01), Whetstone et al.
patent: 3875481 (1975-04-01), Miller et al.
patent: 3926177 (1975-12-01), Handway et al.
patent: 3991746 (1976-11-01), Hanna
patent: 3996922 (1976-12-01), Basham
patent: 4152748 (1979-05-01), Arkans

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