Back to results
US 2009/0014002 A1Published application
Air filter assembly
AssigneeHoneywell International Inc.
InventorsBrian C. Krafthefer, Stephen F. Yates
Life of this patent
Estimating the term…
Abstract
A respirator is disclosed that includes a respirator housing, a filtration media element disposed adjacent the respirator housing, and a respiration assist pump adjacent the filtration media element. The respiration assist pump assists the flow of gas through the filtration media element. In addition, a filtration module is disclosed and includes a filtration media element having a photocatalytic agent and a photon source and a gas pump coupled to the filtration media element to assist the flow of gas through the filtration media element. Methods of providing a respirator air stream are also disclosed.
Claims32
A respirator comprising:
- a respirator housing having an interior region and an exterior region, wherein when worn by a user, the interior region is exposed to air breathable by the user and the exterior region is exposed to ambient air, the respirator housing further having an air passageway passing from the interior region to the exterior region;
- a filtration media element in fluid communication with the air passageway of the respirator housing;
- and
- a respiration assist pump disposed in fluid communication with the filtration media element, wherein the respiration assist pump is an electrostatically actuated diaphragm pump having a pump inlet and a pump outlet with the pump outlet in fluid communication with interior region of the respirator housing, and when electrostatically actuated, assists the flow of gas from the exterior region to the interior region of the respirator housing through the filtration media element, thereby assisting with respiration of the user through the filtration media element.
1 more element
3-4. (canceled)
A filtration module comprising:
- a filtration media element comprising a photocatalytic agent and a photon source;
- and
- an electrostatically actuated diaphragm pump coupled to the filtration media element, wherein the electrostatically actuated diaphragm pump, when electrostatically actuated, assists the flow of gas through the filtration media element.
12-13. (canceled)
A method of providing a respirator air stream comprising steps of:
- providing a respirator housing having an interior region and an exterior region when worn by a user, wherein when worn by a user the interior region is exposed to air breathable by the user and the exterior region is exposed to ambient air, the respirator housing further having an air passageway passing from the interior region to the exterior region, the respirator housing further having a filtration media element in fluid communication with the air passageway of the respirator housing, and a respiration assist pump fluidly coupled to the filtration media element and adjacent the filtration media element, wherein the respiration assist pump is an electrostatically actuated diaphragm pump having a pump inlet and a pump outlet with the pump outlet in fluid communication with interior region of the respirator housing;
- and
- electrostatically actuating the electrostatically actuated diaphragm pump to pump respiration air from the exterior region to the interior region of the respirator through the filtration media element, thereby assisting with respiration of the user through the filtration media.
A filtration module comprising:
- a filtration media element comprising a photocatalytic agent and a plurality of photon sources disposed on or in the filtration media element and illuminating the photocatalytic agent;
- and
- a plurality of electrostatically actuated gas pumps coupled to and spaced from the filtration media element, wherein the gas pump, when electrostatically actuated assists the flow of gas through the filtration media element.
A respirator comprising:
- a respirator housing, wherein the respirator housing has an interior region and an exterior region, wherein when worn by a user the interior region is exposed to air breathable by the user and the exterior region is exposed to ambient air;
- a filtration media element disposed adjacent the respirator housing;
- and
- a respiration assist pump disposed between the filtration media element and the respirator housing interior region, wherein the respiration assist pump assists the flow of gas from the exterior region to the interior region of the respirator through the filtration media element, thereby assisting with respiration of the user through the filtration media element;
- wherein the filtration media element has an upstream face and an opposing downstream face, with a side extending between the upstream face and the downstream face;
- and
- the filtration media element further having a plurality of spaced Light Emitting Diodes (LEDs) disposed along at least part of the side of the filtration media element that extends between the upstream face and the downstream face, the plurality of LEDs, when activated, shine light into the filtration media element.
4 more elements
A respirator comprising:
- a respirator housing having an interior region and an exterior region, wherein when worn by a user, the interior region is exposed to air breathable by the user and the exterior region is exposed to ambient air;
- a filtration media element;
- and
- an electrostatically actuated respiration assist pump disposed in fluid communication with the filtration media element, wherein the electrostatically actuated respiration assist pump assists the flow of gas from the exterior region to the interior region of the respirator through the filtration media element, thereby assisting with respiration of the user through the filtration media element.
1 more element
(canceled)
Dependencies are inferred from the claim text.