Helmets Helmet covers; Other protective head coverings

AHUMAN NECESSITIES A42Headwear A42BHATS HEAD COVERINGS

A42B3/00Helmets Helmet covers; Other protective head coverings

A42B3/003Helmet covers A42B3/006Means for transporting or storing helmets A42B3/04Parts, details or accessories of helmets A42B3/0406Accessories for helmets A42B3/0413Anti-theft arrangements A42B3/042Optical devices A42B3/0426Rear view devices or the like A42B3/0433Detecting, signalling or lighting devices A42B3/044Lighting devices A42B3/0446intended to light the way ahead A42B3/0453Signalling devices A42B3/046Means for detecting hazards or accidents A42B3/0466Means for detecting that the user is wearing a helmet A42B3/0473Neck restraints A42B3/048Hydration systems A42B3/0486Airbags A42B3/0493Aerodynamic helmets; Air guiding means therefor A42B3/06Impact-absorbing shells A42B3/061External coatings A42B3/062with reinforcing means A42B3/063using layered structures A42B3/064with relative movement between layers A42B3/065Corrugated or ribbed shells A42B3/066specially adapted for cycling helmets A42B3/067with damage indication means A42B3/068with preferential fracture zones A42B3/069with soft external layer A42B3/08Chin straps or similar retention devices A42B3/085Occipital retention systems A42B3/10Linings A42B3/105with additional protection for the neck A42B3/12Cushioning devices A42B3/121with at least one layer or pad containing a fluid A42B3/122inflatable A42B3/124with at least one corrugated or ribbed layer A42B3/125with a padded structure A42B3/127with removable or adjustable pads A42B3/128with zones of different density A42B3/14Suspension devices A42B3/142with restraining or stabilizing means A42B3/145Size adjustment devices A42B3/147Anchoring means A42B3/16Ear protection devices A42B3/163Wind or noise deflectors A42B3/166Integral hearing protection A42B3/18Face protection devices A42B3/185Securing goggles or spectacles on helmet shells A42B3/20Face guards A42B3/205Chin protectors A42B3/22Visors A42B3/221Attaching visors to helmet shells A42B3/222in an articulated manner A42B3/223with means for locking the visor in a fully open, intermediate or closed position A42B3/224with electrical actuation means A42B3/225with full face protection A42B3/226with sunscreens A42B3/227with sun visors A42B3/228for military or aviation applications A42B3/24with means for avoiding fogging or misting A42B3/245using means for heating A42B3/26with cleaning means A42B3/28Ventilating arrangements A42B3/281Air ducting systems A42B3/283Air inlets or outlets, with or without closure shutters A42B3/285with additional heating or cooling means A42B3/286with forced flow A42B3/288with means for attaching respirators or breathing masks A42B3/30Mounting radio sets or communication systems A42B3/303Communication between riders or passengers A42B3/306Audio entertainment systems A42B3/32Collapsible helmets Helmets made of separable parts; Helmets with movable parts A42B3/322Collapsible helmets A42B3/324Adjustable helmets A42B3/326Helmets with movable or separable chin or jaw guard A42B3/328with means to facilitate removal