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helmet

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A personal protective device of hardened plastic (or other materials) worn on the head to decrease the severity of injuries in the event of an accident
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

helmet

Public health A personal protective device of hardened plastic worn on the head to ↓ severity of injuries in the event of an accident. See Pro cap helmet.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
The drop test of the helmet shell was retained, but the impact locations were refined to target vulnerable areas, including the section covering the back of the head near the rim of the helmet.
How safe are cricket helmets? the level of protection provided by cricket helmets has been controversial and topical for several years, yet it has taken the recent tragic death of Australian cricketer Phillip Hughes to focus the world's attention on sporting headwear safety standards. Andy Pye reviews the evolution of the cricket helmet
These designs can be delivered as an additional kit to in-service helmets, or can be incorporated into the helmet shell architecture, depending on client needs.
Protection
Aside from the helmet shell, live giant clams (Tridacna gigas) are also abundant in Buntod's reefs, which are teeming with tropical marine life and clusters of soft and hard corals.
'Wild West' Masbate's pristine marine gems
Putting unauthorized stickers or self-adhesive items on the HGU-56/P shell or visor assembly will limit the ALSE tech's ability to inspect the helmet shell for cracks or soft spots.
... Authorized stickers only!
The connector assembly on the right side of the helmet shell is covered by a hinged dust cover.
AIHS helmet care
Remember, NO stickers or other self-adhesive items are authorized on the helmet shell or the visor assembly.
Heads up on helmet care
Take out the suspension pads from the helmet shell. Take off the helmet cover.
Battle rattle review
The mounting screw, NSN 8470-01531-4268, and the post, NSN 8470-01531-4284, fasten the attachment tab, NSN 8470-01-531-3897, to the helmet shell. Each NSN brings a box of 50.
Without a strap, you take it on the chin
Head/Shell Sizing Chart Head Head Head Length Width Circumference Medium Up to 7 3/4 inches Up to Up to 22 1/2 Helmet Shell (198 mm) 6 1/2 inches inches (573 mm) (162 mm) Large From 7 3/4 inches From 22 1/2 inches Helmet Shell (198 mm) (573 mm) up to up to 8 1/4 inches 23 1/2 inches (210 mm) (597 mm) Extra-Large From 8 1/4 inches 6 1/2 inches 23 1/2 inches Helmet Shell (210mm) (162 mm) (597 mm) and over and over and over
It's only fitting
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