The present disclosure can be embodied by a detachable assembly, for example a helmet and headphone assembly. A locking assembly can be configured to removably attach the headphones to the helmet in a locked position. In the locked position, the headphones can be locked horizontally onto the helmet, and a portion of ear cups of the headphones may be received at least partially through a pair of ear cup receiving apertures that extend through a shell of the helmet.

A plastic football helmet has a shell with a left earflap in a left side region and a right earflap in a right side region, each ear flap having a non-circular ear hole, and an offset area defined on a top edge by a top banked portion and on a bottom edge by a bottom banked portion, the offset area extending continuously from the right ear flap, across the rear region, to the left ear flap. The non-circular ear holes are in the offset area. Both the top edge and the bottom edge of the offset area curve upward from the right ear flap to the rear region and curve upward from the left ear flap to the rear region. The top edge and bottom edge do not meet at any point such that offset area begins at an open right end in the right earflap and ends at an open left end in the left earflap. Cheek support are attached to the earflaps to improve retention of the helmet and provide protection to the cheek area against blows.

A plastic football helmet has a shell with a left earflap in a left side region and a right earflap in a right side region, each ear flap having a non-circular ear hole, and an offset area defined on a top edge by a top banked portion and on a bottom edge by a bottom banked portion, the offset area extending continuously from the right ear flap, across the rear region, to the left ear flap. The non-circular ear holes are in the offset area. Both the top edge and the bottom edge of the offset area curve upward from the right ear flap to the rear region and curve upward from the left ear flap to the rear region. The top edge and bottom edge do not meet at any point such that offset area begins at an open right end in the right earflap and ends at an open left end in the left earflap. Cheek support are attached to the earflaps to improve retention of the helmet and provide protection to the cheek area against blows.

A headset includes two earcups that overlie and seal around the wearer's ears. The headset includes a system for suspension of the earcups on a helmet, as well as a speaker enclosure that provides increased structural strength without taking up additional space on the board.

A headset includes two earcups that overlie and seal around the wearer's ears. The headset includes a system for suspension of the earcups on a helmet, as well as a speaker enclosure that provides increased structural strength without taking up additional space on the board.

Pliable draping apparatus or systems for use with a safety helmet for protecting a user's face, neck and/or ears. The pliable draping material includes a helmet engaging portion and a protection portion coupled to the helmet engaging portion. The protection portion protects at least one of a user's mouth, neck, and ears. The protection apparatus also includes a helmet engaging portion with features allowing easy removing coupling to preexisting clips on various types of safety helmets. In one illustrative embodiment, the helmet engaging portion may be formed as a band of elastic material having reinforced slits for connection to attachment clips on different safety helmets. In some embodiments, the pliable draping system may include a removable and adjustable face mask portion for protection of a user's face. The system may include a sleeve allowing the face mask portion to be stored when not in use.

Pliable draping apparatus or systems for use with a safety helmet for protecting a user's face, neck and/or ears. The pliable draping material includes a helmet engaging portion and a protection portion coupled to the helmet engaging portion. The protection portion protects at least one of a user's mouth, neck, and ears. The protection apparatus also includes a helmet engaging portion with features allowing easy removing coupling to preexisting clips on various types of safety helmets. In one illustrative embodiment, the helmet engaging portion may be formed as a band of elastic material having reinforced slits for connection to attachment clips on different safety helmets. In some embodiments, the pliable draping system may include a removable and adjustable face mask portion for protection of a user's face. The system may include a sleeve allowing the face mask portion to be stored when not in use.

In some examples, a system (1900) includes a hearing protector (1920); at least one position sensor; at least one sound monitoring sensor; at least one computing device configured to: receive, from the at least one sound monitoring sensor and over a time duration, indications of sound levels to which a worker is exposed; determine, from the at least one position sensor and during the time duration, that the hearing protector is not positioned at one or more ears of the worker to attenuate the sound levels; and generate, in response to the determination that at least one of the sound levels satisfies an exposure threshold during the time duration and the hearing protector is not positioned at one or more ears of the worker to attenuate the sound levels, an indication for output.

In some examples, a system includes a head-mounted device, a visor that includes a reflective object that is substantially transparent in a visible light spectrum and embodied at a physical surface of the visor, at least one visor attachment assembly that couples the visor to the head-mounted device; at least one optical sensor; and at least one computing device communicatively coupled to the at least one optical sensor, the at least one computing device comprising a memory and one or more computer processors that: receive, from the optical sensor, an indication of light outside of a visible light spectrum that is reflected from the reflective object; determine, based at least in part on the light outside of a visible light spectrum that is reflected from the reflective object, a position of the visor; and perform, based at least in part on the position of the visor, at least one operation.

A modular helmet system comprises a helmet and a chin bar detachably mountable to the helmet. The helmet comprises two receiving-brackets. The chin bar may be inserted into the receiving-brackets of the helmet with its two ends in front in a substantially straight line, wherein the chin bar is lockable in the receiving-brackets in an end position. Each of the two receiving-brackets comprises two insertion flanks which extend towards each other along the direction of insertion at an acute centering angle, wherein the insertion flanks are configured to center the chin bar in the vertical direction when being inserted and to form a stop for the chin bar in the end position of the chin bar.