The present disclosure includes a retrofit sensor module for use with a protective head top with a helmet and a visor. The sensor module includes a sensor housing and an attachment mechanism. The sensor housing encloses a head presence sensor to sense when the protective head top is being worn. The sensor housing also encloses a position sensor to sense the position of the visor relative to the helmet. The retrofit sensor module further comprises an attachment mechanism secured to the housing. The attachment mechanism mates with a first hinge component of a hinge assembly in the protective head top to removably install the sensor module into the protective head top, wherein the hinge assembly allows the visor to move relative to the helmet.

A connecting apparatus detachably connects two assemblies. The connecting apparatus includes a fastener module securable to a first of the assemblies and including a negative-pressure element, and an attachment component of a second of the assemblies. The negative-pressure element is connectable in an attachment direction to the attachment component for connecting the assemblies with one another, wherein, in a connected position, the negative-pressure element interacts with the attachment component such that, in the event of a load acting in between the fastener module and the attachment component opposite to the attachment direction, the negative-pressure element and the attachment component are held against one another by a negative pressure acting between the negative-pressure element and the attachment component. The fastener module includes an adjustment element which is adjustable relative to the negative-pressure element and which is movable relative to the negative-pressure element.

A connecting apparatus detachably connects two assemblies. The connecting apparatus includes a fastener module securable to a first of the assemblies and including a negative-pressure element, and an attachment component of a second of the assemblies. The negative-pressure element is connectable in an attachment direction to the attachment component for connecting the assemblies with one another, wherein, in a connected position, the negative-pressure element interacts with the attachment component such that, in the event of a load acting in between the fastener module and the attachment component opposite to the attachment direction, the negative-pressure element and the attachment component are held against one another by a negative pressure acting between the negative-pressure element and the attachment component. The fastener module includes an adjustment element which is adjustable relative to the negative-pressure element and which is movable relative to the negative-pressure element.

A helmet-mounted marker system includes one or more coordinates of one or more danger zones in digital format and a mechanism for periodically determining a location of the helmet-mounted marker system. From the location, another mechanism determines if the location of the helmet-mounted marker system is within any of the one or more danger zones. If the location of the helmet-mounted marker system is within any of the one or more danger zones, there is a mechanism to notify a wearer of the helmet-mounted marker system.

A protective helmet, particularly a motorbike protective helmet, comprising an outer shell (1) for the distribution of impact forces, the outer shell (1) comprising a chin shell region (2) for covering a chin part of the person wearing the protective helmet, wherein the outer shell (1) comprises a viewing opening (3) arranged above the chin shell region (2), for the person wearing the protective helmet to see through, and the protective helmet has a slot (4a) with a slot shape for interlockingly receiving an electronic module (5a) corresponding to the slot shape, said slot (4a) comprising a slot opening substantially bordering an edge of the viewing opening (3). The protective helmet comprises another slot (4b) having another slot opening substantially bordering the edge of the viewing opening (3) and having the slot shape for interlockingly receiving another electronic module (5b) corresponding to the slot shape.

An apparatus is described to divert sweat away from a wearer's eyes or eyewear. The apparatus includes an elongate base member and a plurality of pliable ridges abutting the base member that, when pressed against the wearer's forehead, form channels. The channels collect and divert sweat away from the eyes so that the sweat drips down the side or back of the head, or down the nose, instead of flowing into the eyes or onto eyewear worn by the wearer.

An example disclosed method of receiving first blink data from a first tag, the first tag carried by a wearable location device associated with a monitored individual having a restricted region; determining tag location data based on the first blink data, the tag location data indicative of the monitored individual locations of the monitored individuals; determining if the monitored individual location is within the restricted region; and when the monitored individual location is within the restricted region: identifying a second tag associated with a security person in proximity to the monitored individual location; alerting the security personnel via the second tag as to the monitored individual being located in the restricted region.

A head-mounted device includes: an outer shell; a first flow channel that is a gap between a head of a wearer and the outer shell; a second flow channel provided in the outer shell and joining the first flow channel; a fan configured to blow air from one of the first flow channel and the second flow channel to the other of the first flow channel and the second flow channel; a first humidity sensor configured to measure an absolute humidity of intake air entering one of the first flow channel and the second flow channel; and a second humidity sensor configured to measure an absolute humidity of exhaust air exiting from the other of the first flow channel and the second flow channel.

An improved design for an athletic helmet incorporating non-Newtonian fluid shock absorbing structures.

An adaptive lighting system for even illumination is provided. In an embodiment, multiple lamps illuminate light in different areas or zones of the surroundings. These lamps modulate their light output in a known (but imperceptible) pattern. One or more light detectors detects light from the surroundings. Light sourced from each lamp is disambiguated and one or more light time-of-flight delays are calculated for each lamp-light detector pair. Based on these calculated delays, illumination levels of the lights are adjusted so as to produce even illumination.