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The no-bolt helmet used a spring-loaded clamp to secure the helmet to corselet over the suit gasket, and many helmets were sealed to the breastplate by a 1/8 turn interrupted screw thread. Swedish helmets were distinctive for using a neck ring instead of a corselet, a precursor of more modern diving equipment, but cumbersome and uncomfortable ...
A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]
Corselet showing interrupted thread for helmet connection and brailes clamping it to the suit. 12-bolt in background, 6-bolt in foreground. The corselet, also known as a breastplate or gorget , is an oval or rectangular collar-piece resting on the shoulders, chest and back, to support the helmet and seal it to the suit, usually made from copper ...
Advanced Diving Equipment Company – American manufacturer of surface supplied diving helmets – Swindell free-flow open circuit air helmets. [1]Aeris (dive gear) – American brand of scuba equipment Originally a brand of American Underwater Products, founded in 1998, and merged into a sister-brand, Oceanic, in 2014.
The backpack supports and stabilises the scuba cylinder on the diver's back. backplate. Main article: Backplate and wing. A plate, normally made from metal, which rests against the diver’s back, and to which the primary scuba cylinders are attached. Held to the body by harness straps over the shoulders and round the waist.
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The helmet is a close fit to the head and moves with the head, allowing the diver to aim the viewport using head movement to compensate for the restricted field of vision. [40] Free-flow helmets compensate for a potentially large dead space by a high gas flow rate, so that exhaled gas is flushed away before it can be rebreathed. [41]:
A prescription mask, or glasses which can be mounted inside the mask or helmet to provide clear vision underwater, enhancing the experience and safety for those with vision problems. A prescription mask contains lenses mounted in the scuba mask frame or bonded to the original viewports. Diving helmets are often used for surface-supplied diving ...