US Patent No: 5,913,307
Number of patents in Portfolio can not be more than 2000
Breathing protection equipment with operating mode indication
Stats
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Jun 22, 1999
Issued date -
Aug 11, 1997
filing date -
08/907,967
serial no -
In Force
status
Importance
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Abstract
The breathing protection equipment includes a mask having an inflatable harness and a demand regulator with three operating modes which are manually selectable. The operating mode is indicated to the wearer of the mask by a repeater. The repeater has a mode sensor carried by the mask and a mode indicator located in the field of view of the wearer and driven by the mode sensor. The mode sensor may detect the position of the switch actuated by the user for changing the mode. The mode indicator may be a display on a mask storage box or on the mask.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,423,723 Closed cycle respirator with emergency oxygen supply | 23 | 1982 | |
| 4,440,166 Electrically and mechanically controllable closed cycle respirator | 11 | 1982 | |
| 5,601,078 Breathing apparatus with a display unit | 21 | 1995 | |
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| 4,870,960 Backup breathing gas supply for an oxygen concentrator system | 56 | 1987 | |
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| 4,201,832 Non melt-drip flame retardant polycarbonate composition | 8 | 1978 | |
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| 5,097,826 Pressure monitoring device for self-contained breathing apparatus | 23 | 1989 | |
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| 4,418,020 2,2-Dichloroacetoacetyl chloride | 1 | 1981 | |
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| 4,827,964 System for metering of breathing gas for accommodation of breathing demand | 28 | 1987 | |
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| 4,425,262 Electroconductive resin composition | 22 | 1982 | |
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| 5,460,175 Air-oxygen mixture controllers for breathing demand regulators | 13 | 1993 | |
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| 5,111,809 Breathing system | 13 | 1988 | |
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| 5,022,393 Apparatus for warning a pilot of life-support system failures | 7 | 1988 | |
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| 4,651,728 Breathing system for high altitude aircraft | 41 | 1984 | |
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| 5,540,218 Respiratory system particularly suited for aircrew use | 8 | 1994 | |