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2. Buoyancy compensator (diving) - Wikipedia

   en.wikipedia.org/wiki/Buoyancy_compensator_(diving)

   A buoyancy compensator (BC), also called a buoyancy control device (BCD), stabilizer, stabilisor, stab jacket, wing or adjustable buoyancy life jacket (ABLJ), depending on design, is a type of diving equipment which is worn by divers to establish neutral buoyancy underwater and positive buoyancy at the surface, when needed.

3. Suzuki Burgman - Wikipedia

   en.wikipedia.org/wiki/Suzuki_Burgman

   It has a large underseat storage area that can fit two full-face helmets, as well as a glovebox and a 12-volt power outlet. The Burgman 400 is also equipped with a number of features that make it a safe and practical scooter, including ABS brakes, a center stand, and a large headlight.

4. Human factors in diving equipment design - Wikipedia

   en.wikipedia.org/wiki/Human_factors_in_diving...

   The exhaust valve should offer the minimum resistance to exhalation, including a minimum opening pressure difference, and low resistance to flow through the opening. It should not easily block or leak due to foreign matter such as vomit. Exhaust gas flow should not be too distracting or annoying to the diver in a normal diving posture.

5. Surface-supplied diving equipment - Wikipedia

   en.wikipedia.org/wiki/Surface-supplied_diving...

   The spring force is adjustable by the diver to prevent the suit from deflating completely or over-inflating and the diver being floated uncontrollably to the surface. Some helmets have an extra manual valve known as a spit-cock, which can be used to vent excess air when the diver is in a position where the main exhaust can not function correctly.

6. Diving helmet - Wikipedia

   en.wikipedia.org/wiki/Diving_helmet

   In a free-flow or constant flow helmet, gas is delivered at an approximately constant rate, set by the panel operator, independent of the diver's breathing, and flows out through an exhaust valve against a slight adjustable over-pressure. Free-flow helmets use much larger quantities of gas than demand helmets, which can cause logistical ...

7. Bell Sports - Wikipedia

   en.wikipedia.org/wiki/Bell_Sports

   In 1971, Bell produced the first full-face off-road motorcycle helmet. [5] Bell made its first production helmet in 1954. It was the result of months of research and development. Richter, with the help of veteran naval pilot Frank Heacox, reverse engineered numerous helmets, including some used in military aviation. Heacox played a key role in ...