You could... but why? It makes your helmet pretty much useless since it could come off at any second. Also, most leagues have rules that require your helmet to be properly attached.
The x-cargo I have has straps that attach to the luggage rack.
Chin straps come in handy by securing a helmet to the head. The are used for baseball helmets, football helmets, combat helmets, hockey helmets, and motorcycle helmets.
Yes. Sometime when getting checked, your helmet will pop up over your chin. The strap will help keep your helmet down. If you don't, the bottom of the mask can pop up and break your nose.
expand the straps
You find one that fits well, adjust the straps and keep them closed when you wear the helmet.
I don't know of any that are specifically for the helmet, but there are some great accessories for iPod shuffle that are straps that use Velcro. You can use the strap to attach it to your arm, or perhaps a helmet. I would check Amazon.com, which will have the strap accessories both new and used.
You don't. You mount the pack on a frame--if you can find one--and attach the Y straps to the frame.
During training, many commanding officers required their soldiers to wear the helmets with the chin straps attached under their chins. Veterans at the front learned to wear the helmets without the chin straps. If an explosion went off next to them, the helmet would catch the concusion and try to fly off. If the chin strap was attached, they felt that it would break your neck.
The weights attach with relative ease. There are Velcro straps that wrap around the ankle.
They were called "Helmets". The US Helmet was a steel helmet and a separate liner and was referred to as Model M-1. The liner was molded from fiber board and it had the straps riveted into it. The straps were adjustable to allow it to fit many sizes. The Liner had a thin chin strap. The helmet had a larger cloth strap.
The definition of the word harness is simple a set of straps that attach to the body of an animal and its vehicle or rider to allow that person to have control. It can also mean the straps to attach a parachute or safety harness to a person when climbing.
Field hockey players don't wear helmets unless they are goalkeepers; most of these know how to maintain their equipment. For any other player: why are you wearing a helmet? It's "only slightly" against the rules and doesn't gain you any advantage. This also assumes the helmet is the right size for you; check that it is, and if not, get a new one that is more appropriate. First, check all the straps are still attached where they should be. This includes the chinstrap and the chinpiece for some helmets, and any webbing around the back or top and sides. Second, make sure they are tightened enough to actually work, not hanging loosely. Third, ensure any buckles and clasps are done up or clipped together, so the straps are actually used properly.