OXYGEN MASKS CREW OXYGEN MASKS Crew oxygen masks are the quick donning type with a mask-mounted regulator. Flight crew selection of diluter demand, 100% demand, or pressure demand is available through the regulator. A lever labeled N-100% PUSH switches the oxygen content between Normal (N) and 100%. Designed for quick and easy use, the ISCBA SCBA provides superior IDLH-level respiratory protection in non-fire related environments. The ISCBA features a simple, dependable single stage pressure reducer combined with the 3M Scott E-Z Flo mask-mounted regulator with first breath activation. The EROS® crew oxygen mask range is a world leader in this field. Its latest version, the 40 series, includes the integrated SmartMike® microphone which helps reduce breathing related noise. Its 358 series is a reference product for military transport aircraft. Recent reported occurrences have shown that for harness hoses P/N 445952, installed on certain flight crew quick donning mask harnesses (also known as `comfort' harness) having P/N MXH21-1, suspected silicon batches may have been used during manufacture, which have shown an unusually high premature rupture rate. May 03, 2017.
- 3m N95 Mask Donning Instructions
- Mask Donning And Doffing Instructions
- Surgical Mask Donning
- Donning And Doffing A Mask
1. Fast donning breathing apparatus, comprising:
a mask provided with a regulator arranged for connection to a source of pressurized breathable gas; and
a harness having:
two stretchable straps forming Vs from common points of attachment on the mask and each including an inflatable element,
means connectable to a source of pressurized breathable gas and manually controllable to admit a pressurized breathable gas to the inflatable elements to extend said stretchable straps up to a large size and to discharge said pressurized breathable gas from said inflatable elements to decrease the size of said stretchable strap and to enable the straps to tighten and to bias the mask onto a face of a wearer,
Cs6 oil paint plugin for mac. a flexible hardly extensible additional strap having a fastener arranged for direct manual tightening by the wearer, said additional strap being located between said two stretchable straps, and
a plurality of bands connecting said additional strap to said stretchable straps at intervals.
2. Apparatus according to claim 1, wherein said flexible additional strap comprises at least two sections connected by said fastener which is so constructed as to be tightened upon a manual pulling on a free end of the additional strap.
3. Apparatus according to claim 2, wherein said additional strap is locally connected to at least one said stretchable strap, whereby said additional strap follows movements of said one of said stretchable straps.
4. Apparatus according to claim 1, further comprising a higher band for contact with a wearer's helmet, connected to said additional strap and provided with end means for engaging an edge of said helmet.
5. Apparatus according to claim 4, wherein said higher band has fastener means for manual adjustment of the length thereof.
6. Fast donning breathing apparatus for use by a wearer with and without a helmet, comprising:
3m N95 Mask Donning Instructions
a mask provided with a regulator arranged for connection to a source of pressurized breathable gas;
and a harness having:
a pair of stretchable straps having ends connected to said mask at connecting points to form Vs from said connecting points and including an element which is inflatable by a pressurized breathable gas to extend the strap up to a size which is sufficient to permit fitting of the harness over the helmet and is deflatable to enable the strap to tighten and to tightly seal the mask onto a wearer's face when located around the helmet,
cord means interconnecting said stretchable straps, and
a flexible additional strap of hardly extensible material having a fastener arranged for direct manual tightening by the wearer of the equipment, said additional strap being located between the two stretchable straps and passing through said cord means.
Mask Donning And Doffing Instructions
7. Apparatus according to claim 6, further comprising tensioning means located on at least one of the stretchable straps and manually actuatable to shorten or lengthen said one of the stretchable straps by a predetermined amount.Surgical Mask Donning
Donning And Doffing A Mask
