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Samantha Cristoforetti demonstrating the use of the Valsalva device in the Sokol space suit. The Valsalva device is a device used in spacesuits, some full face diving masks, and diving helmets to allow astronauts and commercial divers to equalize the pressure in their ears by performing the Valsalva maneuver inside the suit without using their hands to block their nose.
Bascinet with a bretache (nose protection) and aventail (chainmail neck protection). This illustration shows a bascinet with a type of detachable nasal (nose protector) called the bretache or bretèche made of sheet metal. [10] The bretache was attached to the aventail at the chin, and it fastened to a hook or clamp on the brow of the helmet. [10]
11th century Moravian nasal helmet, Vienna. One of the few remaining examples of such helmets. The nasal helmet was a type of combat helmet characterised by the possession of a projecting bar covering the nose and thus protecting the centre of the face; it was of Western European origins and was used from the late 9th century to at least c. 1250.
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]
Depending on style and how it is worn, only the eyes, mouth and nose, or just the front of the face are unprotected. Versions with enough of a full face opening may be rolled into a hat to cover the crown of the head or folded down as a collar around the neck. It is commonly used in alpine skiing and snowboarding.
Sovereign: a gold barred-face (tournament) helm placed affronté; Peer's helmet: silver barred-face (tournament) helm placed in profile; Knight's or baronet's helmet: steel helm (earlier jousting helm, later close helm) placed affronté with visor open; Esquire's helmet: steel helm placed in profile with visor closed
The German sallet may have been the product of the melding of influences from the Italian sallet and the deep-skulled "German war-hat," a type of brimmed chapel de fer helmet. [3] Later Italian sallets (by c. 1460) lost their integral face protection and became open-faced helmets with gracefully curved surfaces.
Full face helmet with its visor raised. A full face helmet covers the entire head, with a rear that covers the base of the skull, and a protective section over the front of the chin. Such helmets have an open cutout in a band across the eyes and nose, and often include a clear or tinted transparent plastic face shield, known as a visor, that ...
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