Abstract: A personal respiratory protection device comprising an upper panel, a central panel, and a lower panel, the central panel being separated from each of the upper and lower panels by a first and second fold, seam, weld or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold, seam, weld or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the upper panel has a graspable upper tab, the upper tab being graspable in use to open the device.

Abstract: A personal respiratory protection device comprising a main body (12) carrying an exhalation valve (28), the valve (28) having a grip region (29) which is grippable in use by the user, the grip region (29) being configured to indicate to the user that the valve (28) is to be gripped during opening, donning and doffing of the device.

Abstract: A personal respiratory protection device (10) comprising an upper panel (18), a central panel (16), and a lower panel (20), the central panel being separated from each of the upper and lower panels by a first and second fold, seam, weld or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold, seam, weld or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the upper panel has a graspable upper tab, the upper tab (41) being graspable in use to open the device.

Abstract: An exhaust apparatus for connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation, the apparatus comprising a blower in fluid connection with the at least one exhalation valve, the blower being responsive to the wearer's respiratory cycle to draw a substantial portion of the wearer's exhaled breath through the at least one exhalation valve wherein, in response to the wearer's respiratory cycle, the blower operates throughout the wearer's exhale breath, or a substantial period thereof, and does not operate throughout the wearer's inhale breath, or a substantial period thereof

Abstract: A personal respiratory protection device comprising an upper panel, a central panel, and a lower panel, the central panel being separated from each of the upper and lower panels by a first and second fold, seam, weld or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold, seam, weld or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the lower panel includes a stiffening sheet which has a longitudinal crease line, wherein the stiffening sheet is folded about the longitudinal crease line when the device is in use.

Abstract: Various embodiments of a filter cartridge are disclosed. The filter cartridge includes a first filter media layer having first and second major surfaces, a second filter media layer having first and second major surfaces, and a plenum disposed between the first and second filter media layers. The filter cartridge further includes functional material disposed on the first major surface of each of the first and second filter media layers within a filter region of the filter cartridge, where the functional material includes active particles disposed on an adhesive layer; and a perimeter seal region that defines at least a portion of a perimeter of the filter cartridge, where at least the first and second filter media layers are connected together in the perimeter seal region. The functional material is not disposed in at least a portion of the perimeter seal region.

Abstract: Various embodiments of a personal respiratory protection device (10) are disclosed. The personal respiratory protection device (10) includes an upper panel (18), a central panel (16), and a lower panel (20), the central panel (16) being separated from each of the upper and lower panels (18) by a first and second fold (36), seam, weld (76) or bond, respectively, such that the device is capable of being folded flat for storage along the first and second fold (36), seam, weld (76) or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use. The lower panel (20) includes a stiffening sheet (40) that has a longitudinal crease line, where the stiffening sheet (40) is folded about the longitudinal crease line when the device is in use.

Abstract: An exhaust apparatus for connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation, the apparatus comprising a blower in fluid connection with the at least one exhalation valve, the blower being responsive to the wearer's respiratory cycle to draw a substantial portion of the wearer's exhaled breath through the at least one exhalation valve wherein, in response to the wearer's respiratory cycle, the blower operates throughout the wearer's exhale breath, or a substantial period thereof, and does not operate throughout the wearer's inhale breath, or a substantial period thereof.

Abstract: A personal respiratory protection device (10) comprising an upper panel (18), a central panel (16), and a lower panel (20), the central panel being separated from each of the upper and lower panels by a first and second fold, seam, weld or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold, seam, weld or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the upper panel has a graspable upper tab, the upper tab (41) being graspable in use to open the device.

Abstract: A personal respiratory protection device comprising a main body (12) carrying an exhalation valve (28), the valve (28) having a grip region (29) which is grippable in use by the user, the grip region (29) being configured to indicate to the user that the valve (28) is to be gripped during opening, donning and doffing of the device.

Abstract: A personal respiratory protection device comprising an upper panel, a central panel, and a lower panel, the central panel being separated from the upper and lower panels by a first and second fold, seam, weld or bond, respectively, such that device is capable of being folded flat for storage along first and second fold, seam, weld or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the upper panel has a nose conforming element for conforming at least part of the upper panel to the nose of a wearer when in use, the nose conforming element having a resiliently flexible central portion and first and second rigid outer portions extending outwardly from the central portion, the central portion deforming upon donning of the respirator so that the central and outer portions conform to the profile of the nose.

Abstract: A personal respiratory protection device comprising an upper panel (18), a central panel (16), and a lower panel (20), the central panel (16) being separated from each of the upper and lower panels (18) by a first and second fold (36), seam, weld (76) or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold (36), seam, weld (76) or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the lower panel (20) has a graspable tab (32) attached to an interior portion of an external surface of the lower panel (20), the tab (32) being graspable in use to open the device.

Abstract: A personal respiratory protection device (10) comprising an upper panel (18), a central panel (16), and a lower panel (20), the central panel (16) being separated from each of the upper and lower panels (18) by a first and second fold (36), seam, weld (76) or bond, respectively, such that device is capable of being folded flat for storage along the first and second fold (36), seam, weld (76) or bond and opened to form a cup-shaped air chamber over the nose and mouth of the wearer when in use, wherein the lower panel (20) includes a stiffening sheet (40) which has a longitudinal crease line, wherein the stiffening sheet (40) is folded about the longitudinal crease line when the device is in use.