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US 2006/0048783 A1Published application
Personal mask test system
AssigneeMSP Corporation
InventorsBenjamin Liu, Daryl Roberts
Life of this patent
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Abstract
A personal mask testing system (PMTS) is of a size of a human hand. The PMTS has several energy efficient features that permit running the PMTS from a battery source within the housing. The PMTS also includes a replaceable vapor source.
Claims20
A personal mask testing device for measuring efficacy of a seal of a respiratory face mask on a person, the device comprising:
- a housing of a size of a human hand;
- a condensation nucleus counter positioned within the housing, and
- the housing made of a material that provides electromagnetic shielding to and is in thermal conductive relationship with the condensation nucleus counter.
A personal mask testing device for measuring fit of a respiratory face mask on a person, the device comprising:
- a housing;
- a condensation nucleus counter positioned within the housing;
- a liquid vapor source in fluid communication with the condensation nucleus counter;
- and
- a mechanism that indicates the amount of liquid remaining in said liquid vapor source.
2 more elements
A condensation nucleus counter comprising:
- a housing;
- a vaporizer, a condenser and an optical particle counter positioned within the housing;
- a sampling tube, a sampling pump and an ejector pump in fluid communication with the vaporizer, the condenser and the optical particle counter;
- wherein said sampling pump providing an aerosol flow in the sampling tube, and said ejector pump providing additional flow to the aerosol in the sampling tube.
1 more element
A condensation nucleus counter comprising:
- a condenser;
- a droplet counter, and
- a thermoelectric cooler in thermal contact with said condenser and said droplet counter wherein the droplet counter is isolated from the condenser such that a selected temperature difference between the condenser and the droplet counter is maintained.
Dependencies are inferred from the claim text.