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公开(公告)号：EP0789604A1
公开(公告)日：1997-08-20
申请号：EP95931803.0
申请日：1995-09-11
发明人： DEBE, Mark, K. , YUSCHAK, Gregory , PARSONAGE, Edward, E. , POIRIER, Richard, J. , MILLER, Lowell, R.
CPC分类号： A62B18/088
摘要： An exposure indicating apparatus for monitoring air flowing along a flow-through path extending from the external environment, through an air purifying respirator cartridge and into a face mask. A reversible sensor is releasably attached to the flow-through path so that it can be removed without interrupting the flow of air along the flow-through path. A processing device generates a concentration signal responsive to at least one property of the reversible sensor. The processing device provides and active indication, such as audio, visual, or tactile response to the concentration signal. A flow-through housing may form a portion of the flow-through path. The flow-through housing is preferably interposed between the air purifying cartridge and the face mask. A processor housing containing the processing device and indicator is attached to the flow-through housing or the air purifying respirator cartridge. The reversible sensor is located in the processor housing, the air purifying respirator cartridge or the flow-through housing. The sensor is coupled to the processing device by an optical, electrical, or general electromagnetic coupler covering the frequency range, for example, from DC to RF to microwave.
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公开(公告)号：EP0789604B1
公开(公告)日：2000-11-22
申请号：EP95931803.1
申请日：1995-09-11
发明人： DEBE, Mark, K. , YUSCHAK, Gregory , PARSONAGE, Edward, E. , POIRIER, Richard, J. , MILLER, Lowell, R.
IPC分类号： A62B18/08
CPC分类号： A62B18/088
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公开(公告)号：EP0804263A1
公开(公告)日：1997-11-05
申请号：EP95944233.0
申请日：1995-12-22
IPC分类号： A62B23
CPC分类号： A62B23/02
摘要： A respirator (10) that includes a face piece (14) and a cartridge receiving structure (22) located on the face piece (14). The face piece (14) is sized to fit snugly over the nose and mouth of a person, and the filter cartridge (12) is capable of being manually snapped into engagement with the cartridge receiving structure (22). The snap-fit can be instantaneously obtained without rotational movement of the filter cartrdige (12), simply by pressing the filter cartridge (12) against the receiving structure (22).
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公开(公告)号：EP0788393A1
公开(公告)日：1997-08-13
申请号：EP95931792.0
申请日：1995-09-11
发明人： DEBE, Mark, K. , MILLER, Lowell, R. , PARSONAGE, Edward, E. , POIRIER, Richard, J. , YUSCHAK, Gregory
CPC分类号： A62B18/088
摘要： An exposure indicating apparatus having a sensor with at least one property responsive to a concentration of a target species within an environment. A processing device generates a concentration signal as a function of the at least one property. The exposure signaling rate varies as a function of the concentration signal. Alternatively, the processing device may provide a threshold detector for generating a threshold signal in response to the concentration signal when a predetermined threshold concentration is attained. The exposure signaling rate may then vary thereafter as a function of the concentration signal. The processing device drives the indicator at a ready signaling rate indicative of an exposure indicating apparatus operating within predefined design parameters and a fault signaling rate different from the ready signaling rate indicative of the exposure indicating apparatus operating outside of the predefined desing parameters. The indicator operates at a signaling rate in the frequency range of 0.001 to 30 Hz.
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公开(公告)号：EP0788393B1
公开(公告)日：2004-06-09
申请号：EP95931792.6
申请日：1995-09-11
发明人： DEBE, Mark, K. , MILLER, Lowell, R. , PARSONAGE, Edward, E. , POIRIER, Richard, J. , YUSCHAK, Gregory
IPC分类号： A62B18/08
CPC分类号： A62B18/088
摘要： An exposure indicating apparatus having a sensor with at least one property responsive to a concentration of a target species within an environment. A processing device generates a concentration signal as a function of the at least one property. The exposure signaling rate varies as a function of the concentration signal. Alternatively, the processing device may provide a threshold detector for generating a threshold signal in response to the concentration signal when a predetermined threshold concentration is attained. The exposure signaling rate may then vary thereafter as a function of the concentration signal. The processing device drives the indicator at a ready signaling rate indicative of an exposure indicating apparatus operating within predefined design parameters and a fault signaling rate different from the ready signaling rate indicative of the exposure indicating apparatus operating outside of the predefined desing parameters. The indicator operates at a signaling rate in the frequency range of 0.001 to 30 Hz.
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公开(公告)号：EP0804263B1
公开(公告)日：2002-03-27
申请号：EP95944233.6
申请日：1995-12-22
IPC分类号： A62B23/02
CPC分类号： A62B23/02
摘要： A respirator (10) that includes a face piece (14) and a cartridge receiving structure (22) located on the face piece (14). The face piece (14) is sized to fit snugly over the nose and mouth of a person, and the filter cartridge (12) is capable of being manually snapped into engagement with the cartridge receiving structure (22). The snap-fit can be instantaneously obtained without rotational movement of the filter cartrdige (12), simply by pressing the filter cartridge (12) against the receiving structure (22).
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