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A resuscitator is a device using positive pressure to inflate the lungs of an unconscious person who is not breathing, in order to keep them oxygenated and alive. [citation needed] There are three basic types: a manual version (also known as a bag valve mask) consisting of a mask and a large hand-squeezed plastic bulb using ambient air, or with supplemental oxygen from a high-pressure tank.
Example of measurement of efficiency of the respirator (in the workplace). Description: (1) personal sampling pump, (2) the cassette and the filter for determining the concentration (in the breathing zone), (3) the sampling line (from the breathing zone), (4) the cassette and the filter to determine the concentration (under a mask), and (5) the sampling line (from the mask).
The European respirator standards refer to the filtering classification by EN 149, EN 14683, and EN 143, all European standards of testing and marking requirements for respirators. [1] FFP standard masks (where FFP stands for filtering facepiece) [2] cover the nose, mouth and chin and may have inhalation and/or exhalation valves. [1]
The Service Respirator No. 6 (S6), also known as Respirator NBC S6 No. 1 Mark 1 was a protective gas mask issued to the British Armed Forces. It was developed in the 1950s and issued for general service from 1966 to 1986, when it was replaced by the S10. Currently, the S6 is not used by the British military.
Most stock airsoft guns have 6.03–6.05 mm (0.237–0.238 in) bore barrels, but best performance [27] is usually seen with "tightbore" barrels, which are 6.01–6.05 mm (0.237–0.238 in) in diameter. However, the tighter the bore, the more likely the chance of a pellet jam, and subsequently, tightbores need to be cleaned and lubricated regularly.
Airsoft is safe when played with proper protective gear. Most airsoft guns on the market are usually below 350 ft/s (110 m/s), but projectiles expelled from any type of airsoft gun can travel as slow as 65 ft/s (20 m/s) to more than 700 ft/s (210 m/s) and are capable of breaking skin at 350–400 ft/s (110–120 m/s).
The Bell Huey family of helicopters includes a wide range of civil and military aircraft produced since 1956 by Bell Helicopter.This H-1 family of aircraft includes the utility UH-1 Iroquois and the derivative AH-1 Cobra attack helicopter series and ranges from the XH-40 prototype, first flown in October 1956, to the 21st-century UH-1Y Venom and AH-1Z Viper.
Agusta-Bell 206A License-built in Italy. Bell 206A-1 OH-58A aircraft that are modified for FAA civil certification. [32] Agusta-Bell 206A-1 License-built in Italy. Bell 206B Upgraded Allison 250-C20 engine. [33] Agusta-Bell 206B License-built in Italy. Bell 206B-2 Bell 206B models upgraded with Bell 206B-3 improvements. [33] Bell 206B JetRanger ...