Protective helmet system with cam for attaching first and second face shields thereto

A protective helmet system, comprising:

• a helmet;
• a first face shield pivotable between an open position and a closed position;
• and
• an attaching assembly comprising a helmet cam having first helmet cam surfaces extending radially outward from the helmet cam configured to releasably attach the first face shield to the protective helmet system and second helmet cam surfaces extending axially from the helmet cam configured to releasably attach an optional second face shield to the protective helmet, the attaching assembly generating a first biasing force to bias the first face shield seal downward when the first face shield is in the closed position and a second biasing force to bias the first face shield upward when in the open position.

A modular protective helmet system kit for multiple protection classification, comprising:

• a helmet;
• a first face shield optionally attachable to the helmet, the first face shield being pivotable between an open position and a closed position extending across a viewing window when attached to the helmet;
• a second face shield optionally attachable to the helmet, the second face shield being configured to extend over the first face shield and substantially across the viewing window when attached to the helmet;
• and
• an attaching assembly comprising a helmet cam having first helmet cam surfaces configured to releasably attach the first face shield to the protective helmet system and second helmet cam surfaces configured to releasably attach the second face shield to the protective helmet, the attaching assembly generating a downward biasing force when the first face shield is in the closed position and an upward biasing force when the face shield is in the open position.