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MSA went on to produce a lighter and more streamlined helmet known as the "Topgard" in the 1960s. MSA brand firefighting helmets were notably used by the Los Angeles County Fire Department and were seen regularly on 1970s TV shows. MSA continues to manufacture firefighting protective helmets and in 2000 acquired competitor, Cairns Helmets.
Easily shaped with heat, it is cost-effective to manufacture. In 1952, MSA offered the Shockgard Helmet to protect linemen from electrical shock of up to 10,000 volts. In 1961, MSA released the Topgard Helmet, the first polycarbonate hard hat. 1962 brought the V-Gard Helmet, which today is the most widely used hard hat in the United States.
A 2008 systematic study showed that helmets reduce the risk of head injury by around 69% and the risk of death by around 42%. [10]Although it was once speculated that wearing a motorcycle helmet increased neck and spinal injuries in a crash, recent evidence has shown the opposite to be the case: helmets protect against cervical spine injury.
When activated by a sudden impact, the helmet performs like an instant ice pack that immediately initiates a cooling effect. [2] This cooling process lasts approximately 30 to 45 minutes and helps to control swelling, extending protection of vital neurological function during the Golden hour prior to hospital arrival.
1. HANS device, 2. Tether (one per side), 3. Helmet anchor (one per side), and 4. Shoulder support. Primarily made of carbon fiber reinforced polymer, the HANS device is shaped like a "U", with the back of the "U" set behind the nape of the neck and the two arms lying flat along the top of the chest over the pectoral muscles.
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]