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US 2006/0048778 A1Published application
Low pressure-drop respirator filter
AssigneeHoneywell International Inc.
InventorsRussell Johnson, Brian Krafthefer
Life of this patent
Estimating the term…
Abstract
A respirator filter removes toxic chemical threats by first heating an air stream, and then contacting it with a catalyst and adsorbent at conditions conducive to toxicity elimination by reaction. The air stream may then be cooled prior to being provided to a wearer of the respirator. A pump is included in various embodiments.
Claims21
A respirator comprising:
- a heater;
- a catalytic converter positioned proximate the heater to react with incoming air at an elevated temperature;
- and
- a cooler coupled to the converter to cool air received from the catalytic converter.
1 more element
A respirator comprising:
- a heater;
- a reactor positioned proximate the heater to react with incoming air at an elevated temperature;
- and
- a cooler coupled to the reactor to cool air received from the oxidizer.
1 more element
A respirator comprising:
- an air intake;
- a heater;
- a catalytic converter coupled to receive air from the air intake and positioned proximate the heater to react with incoming air at an elevated temperature;
- a pump coupled downstream from the catalytic converter to pump reacted air;
- a cooler coupled to the catalytic converter to cool air received from the converter;
- and
- an outlet to provide the air to a user of the respirator.
4 more elements
A method comprising:
- receiving incoming contaminated air;
- oxidizing the air at a temperature sufficient to remove chemical toxicity;
- cooling the air to a breathable temperature;
- and
- providing the air to a user for breathing.
2 more elements
Dependencies are inferred from the claim text.