Orifice test device for protective mask testers

Details Orifice test device for protective mask testers Orifice test device for protective mask testers

2008-08-21

2010-06-29

Rogers, David A. (Department: 2856)

Measuring and testing

With fluid pressure

Leakage

C073S001160, C073S040000, C073S04050R, C138S089000, C138S092000, C138S118000

Reexamination Certificate

active

07743647

ABSTRACT:
An orifice test calibration device tests the functionality of protective mask testers. The orifice test calibration device has a semi-rigid tubular channel with one end for sealing the flow outlet port of the protective mask tester and a second end for sealing the vacuum inlet port of the protective mask tester. The device also includes a sealable opening within the tubular channel and an insertable orifice plug having a set diameter for insertion into the sealable opening in order to calibrate the protective mask tester.

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patent: 2004/0004010 (2004-01-01), Versluys
patent: 2004/0107964 (2004-06-01), Shaw

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