Various hard hat fan systems are provided. In a certain embodiment, fan system includes an impact absorbing layer with a channel that defines a recessed surface which extends into the impact absorbing layer away from an inner surface of a shell of a hard hat. Together, the inner surface of the shell and the recessed surface define a duct configured to provide fluid communication between an inlet of the channel and an air vent positioned along the channel. In another embodiment, fan system includes a mounting bracket with first and second cam levers which may be actuated into a locked position, and first and second channels. When in the locked position, the first and second cam levers bias the edges of a mounting ridge of the shell against the first and second channels of the mounting bracket such that the mounting bracket is retained on the shell.

In accordance with the teachings of the present invention, an integrated fit and retention system is provided. In a particular embodiment of the present invention, the integrated fit and retention system includes a first rigid strap and a second rigid strap, each having a first end and a second end. The first end of each rigid strap is coupled to a helmet body proximate a front of the helmet body, and the second end of each rigid strap is coupled to the helmet body proximate a rear of the helmet body. The integrated fit and retention system also includes a chin strap operable to couple the first and second rigid straps beneath a chin of a wearer. In particular embodiments, the integrated fit and retention system may further include a fit strap coupling the first and second rigid straps, that may be configured to sit below an occipital lobe of the wearer.

A protective helmet includes a plurality of fluid filled bladders, impact sensors, valves, and pumps wherein the helmet absorbs energy from an impact to protect a person wearing the helmet from traumatic brain injury. The bladders expel fluid in response to a triggering event such as energy from an impact detected as a pressure spike event and/or detected as an acceleration event. A selected bladder may expel fluid to other bladders, to a reservoir, to the environment outside of the protective helmet, or combinations thereof. In embodiments where the bladders need additional fluid after an impact, one or more pumps may refill selected deflated bladders. When a bladder is underinflated, an indicator light may emit light on an outer surface of the protective helmet to warn that the bladder is not yet ready to be placed in operation to absorb another impact.

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

A helmet system includes: a helmet shell; right and left bottom guards; a head strap comprising a head band and a plurality of flexible tethers, including a main tether stem and a tether connector, including a connector stem and a connector blocking member, such that the flexible tethers protrude from an outer periphery of the head band and are connected to tether apertures in the helmet shell. The head band can optionally include an opening with a band lock, and right and left upward curved sections. The helmet system can optionally include shoulder pads.

The present invention relates to a headband including an adjustment band which is worn on a wearer's head and has the length adjusted; a support band which is connected to the adjustment band and is supported on the upper part of the wearer's head; and a length adjustment lever for adjusting the length of the adjustment band, wherein a cushion case of a flexible resilient material is integrally formed on the length adjustment lever.

A support pad for a headband disposed on a side of a headband that is worn on a side of the head of a worker to support the back of the worker's head, the support pad including: a coupler formed on a side of the headband; a first pad unit formed at a portion, which corresponds to the right part of the back of the worker's head, to be rotatable left and right; and a second pad unit formed at a portion, which corresponds to the left part of the back of the worker's head, to be rotatable left and right.

A headband for a mask capable of adjusting a position of a guard, connected to a side of a guard disposed at a position corresponding to the face of a worker and is worn on a side of the worker's head, the headband including: a band worn on a side of the worker's head, having a protrusion partially cut on a side and protruding outward, and having a plurality of grooves continuously formed at a side of the protrusion; a moving body coupled to a side corresponding to a side of the band where the protrusion is formed to be movable in the longitudinal direction of the band; and a rotary lever rotatably disposed at a side of the moving body and rotating such that another side is inserted into or separated out of any one of the plurality of grooves. -shaped inclined portion is formed between the grooves of the protrusion.

A cushion pad for head bands, installed at the rear part of a head band worn on a worker's head so as to support the back of the worker's head while adjusting the length of the head band. The cushion pad includes a pad unit having a concave spherical-shaped surface closely adhered to the back of the worker's head and provided with a first prop and second props to support the upper central region and both lower side regions of the back of the worker's head, and an adjustment unit formed at the rear of the center of the pad unit and provided with through holes formed at both sides thereof to receive both rear ends of the head band and a rotary lever between the through holes to pressurize and fix the head band, thus allowing a worker to more conveniently and stably wear a welding mask.

A safety helmet with a rotary impact buffering function comprises a shell and an elastic liner arranged in the shell, wherein a gap is formed between the shell and the elastic liner, and a rotary impact buffering device enabling the shell to rotate relative to the elastic liner is arranged between the shell and the elastic liner. When the safety helmet is impacted by external force, the shell has the tendency to rotate relative to the elastic liner under the effect of component force applied to the shell in the tangential direction; however, through tangential deformation of the rotary impact buffering device, the shell can rotate relative to the elastic liner by a certain angle on the premise of keeping the elastic liner unmoved, and thus the impact to users from external force is greatly reduced.