Instrument for measuring pressure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Aug 24, 1987
filing date -
Aug 24, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An instrument for measuring the pressure exerted upon a portion of the body of a bedridden individual lying on a mattress by that section of the mattress which is engaged by this body portion. A small flexible hollow member has a first air inlet and is adapted to be positioned for use between the body portion and the mattress section. A switch is disposed in the member with connecting leads extending out of the member. The switch is open when the air pressure in the member is at least equal to the exerted pressure and is closed when the air pressure in the member is less than the exerted pressure. A circuit including a lamp and an electric power source is connected to the switch to cause the lamp to be energized and lit when the switch is closed, the lamp being deenergized and dark when the switch is open. An air pressure meter has a second air inlet. A manually operated air pump is connected to both air inlets. When the member is positioned for use with the switch closed and the lamp energized, the pump is actuated and the pressure in the member is increased until the lamp is deenergized. The meter at the instant the lamp is deenergized displays the exerted pressure.
First Claim
Family
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Cited Art Landscape
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