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2016 - May, Simpson forms Motorcycle Safety Unit to meet demand for Simpson Motorcycle Helmets. 2015 - December, Simpson acquires Stilo S.r.l., a leading manufacturer and designer of premier racing helmets and helmet communications for Global motorsports - February, Simpson Granted a U.S. Patent for multi-tether system for head restraint devices
Full-face helmets offer much more protection than open-face helmets. [16] Several manufacturers have introduced full-face helmets with a flip-up front, combining the protection of a full-face with the ease of communication and donning or doffing that an open-face gives. [15]: 50 Studies have consistently shown that wearing a helmet: [17] [18]
An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness.
There are two main types of respirators. One type of respirator functions by filtering out chemicals and gases, or airborne particles, from the air breathed by the user. [5] The filtration may be either passive or active (powered). Gas masks and particulate respirators (like N95 masks) [6] are examples of this type of respirator. A second type ...
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An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.
The study [26] showed that the three models of full face masks had a significant leakage of unfiltered air through the gaps between the mask and the face. The minimum values of the workplace protection factors (WPF) of each of the three negative pressure full face mask models were 11, 17 and 26.
The masks' affordable price points and branding of professional-grade technology to fight signs of aging and reduce acne contributed to its popularity over the years.
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