FIT-CHECKING APPARATUS
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United States of America Patent
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Issued Date -
Jan 11, 2018
app pub date -
Jul 3, 2017
filing date -
Jul 8, 2016
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Abstract
A respirator fit-check apparatus has an air pressure sensor adapted, in use, to sense the air pressure within a sealed interior volume of a close-fitting respirator; an indicator adapted, in use, to indicate instructions and test results to a wearer of the respirator; and a CPU, the apparatus being configured to monitor the air pressure within the respirator and to determine and indicate whether or not the respirator seals to the face of a wearer based on a vacuum decay over a specified period of time. The apparatus may also be configured to monitor the breathing depth and/or rate of the wearer subsequent to a fit-check determination.
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