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  2. Self-contained self-rescue device - Wikipedia

    en.wikipedia.org/wiki/Self-contained_self-rescue...

    Test bench for a miner's closed circuit self-rescuers. A self-contained self-rescue device, SCSR, self-contained self-rescuer, or air pack is a type of closed-circuit SCBA [1] with a portable oxygen source for providing breathable air when the surrounding atmosphere lacks oxygen or is contaminated with toxic gases, e.g. carbon monoxide.

  3. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    Throughout the 1800s, other SCBA-like devices were developed by various people [failed verification] including a closed-circuit rebreather designed by Bernhard Draeger. The closed circuit system developed by him would not only be used by many fire departments, but also was one of the first working SCUBA systems.

  4. craigslist - Wikipedia

    en.wikipedia.org/wiki/Craigslist

    Craigslist headquarters in the Inner Sunset District of San Francisco prior to 2010. The site serves more than 20 billion [17] page views per month, putting it in 72nd place overall among websites worldwide and 11th place overall among websites in the United States (per Alexa.com on June 28, 2016), with more than 49.4 million unique monthly visitors in the United States alone (per Compete.com ...

  5. Cascade filling system - Wikipedia

    en.wikipedia.org/wiki/Cascade_filling_system

    A cascade filling system is a high-pressure gas cylinder storage system that is used for the refilling of smaller compressed gas cylinders. [ 1 ] [ 2 ] In some applications, each of the large cylinders is filled by a compressor , otherwise they may be filled remotely and replaced when the pressure is too low for effective transfer.

  6. Supplied-air respirator - Wikipedia

    en.wikipedia.org/wiki/Supplied-air_respirator

    SARs without an auxiliary SCBA may also be used in conditions where an air-purifying respirator may be used, and have the benefit of a higher range of assigned protection factors (APF). Air-purifying respirators have APFs in the range 5–50 while SARs are in the range 25–2000, and full-facepiece pressure-demand SARs with an auxiliary ...

  7. Second Chance (body armor) - Wikipedia

    en.wikipedia.org/wiki/Second_Chance_(body_armor)

    Second Chance is an American body armor manufacturing company. The company was founded in the early 1970s by U.S. Marine and pizza delivery owner/driver Richard Davis. Davis developed the idea of a bulletproof vest after shooting three armed robbers in self-defense during a delivery.

  8. Escape breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Escape_breathing_apparatus

    Both systems were based on oxygen supply from a high-pressure cylinder with simultaneous absorption of carbon dioxide by an inserted cartridge filled with sodium hydroxide. 1916: The Draeger model DM 2 became standard equipment of the German Navy. 1926: Draeger displayed a rescue breathing apparatus that the wearer could swim with.

  9. Scott Air-Pak SCBA - Wikipedia

    en.wikipedia.org/wiki/Scott_Air-Pak_SCBA

    The Scott Air-Pak SCBA is an open-circuit, self-contained breathing apparatus designed to meet the National Fire Protection Association (NFPA) Standard 1981. All components, excluding the air cylinder, were designed and manufactured by Scott Safety .