In one embodiment, a protective helmet includes an outer shell made of a polyethylene material, wherein the shell is locally deformable when impacted with a strong force and an inner liner provided within the outer shell. A protective helmet comprising: an outer shell made of a polyethylene material, wherein the shell is locally deformable when impacted with a strong force; and an inner liner provided within the outer shell.

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.

A helmet may include an outer liner and an inner liner disposed inward from the outer liner, the inner liner comprising an inner surface with at least one hole. A fit belt may comprise at least one pin coupled to an inner surface of the inner liner with the at least one hole mateably coupled with the at least one pin. An elastomeric strap may comprise an inner end and an outer end opposite the inner end. The outer end of the elastomeric strap may be coupled to an inner surface of the outer liner. The outer end of the elastomeric strap may comprise a recess and a fastener that extends through the recess of the outer end of the elastomeric strap to couple the elastomeric strap to the outer liner. The inner end of the elastomeric strap may be coupled to the fit belt.

A connector (50) for connecting an inner shell (3) and an outer shell (2) of a helmet (1) so as to allow the inner shell and the outer shell to slide relative to each other, the connector (50) comprising: a first attachment part (51) for attaching to one of the inner shell and the outer shell; a second attachment part (52) for attaching to the other of the inner shell and the outer shell; and one or more resilient structures (53) extending between the first attachment part and the second attachment part and configured to connect the first attachment part and the second attachment part so as to allow the first attachment part to move relative to the second attachment part as the resilient structures deform; wherein the resilient structures comprise at least one angular portion between the first attachment part and the second attachment part, an angle of said angular portion being configured to change to allow relative movement between the first attachment part and the second attachment part.

An impact attenuating helmet including an outer liner having an inner mating surface, an inner liner positioned under the outer liner and having an outer mating surface configured to be received by the inner mating surface of the outer liner, the inner liner and the outer liner being configured to move relative to each other along a slip plane between outer mating surface of the inner liner and the inner mating surface of the outer liner, and one or more securing attachments, each securing attachment being coupled to the outer liner and being configured to secure the outer liner to the inner liner, each securing attachment comprising a slack element configured to permit a range of movement between the outer liner and the inner liner.

A suspension band assembly to be used to support a hard hat on a head of a user. The suspension band assembly includes a primary support loop to receive the head of the user therein. An electronic peripheral is fixedly secured to the primary support loop. An attachment strap extends out from the primary support loop to a strap distal end. An anchor is fixedly secured to the strap distal end for securing the attachment strap to the hard hat. An electrical anchor contact is fixedly secured to the anchor to provide an electrical connection between the hard hat and the electronic peripheral located on the primary support loop.

A helmet includes a helmet shell and an impact absorber arranged at an inner side of the helmet shell. The impact absorber includes a hemispherical main body and an inserted member. The main body includes an insertion recess in an outer surface of the main body, the insertion recess defines an insertion space between the outer surface of the main body and an inner surface of the helmet shell, and the insertion space is open toward a fitting opening of the helmet shell. The inserted member is press-fitted into the insertion space.

The present disclosure provides an auxiliary device for sleeping on a seat. The auxiliary device for sleeping on a seat includes a pillow. The pillow can be stably connected to a seat headrest through assembly parts. An eye mask is arranged on the side, away from the seat headrest, of the pillow. The eye mask has the function of isolating external light. Therefore, the rest quality of people is improved, and accidents can also be prevented. In addition, the eye mask is detachably connected with the pillow through the hook-and-loop fasteners, and the assembly parts can be quickly disassembled and assembled by using binding bands and connecting buckles, so that the using efficiency of the device is improved.

The present application provides a headband arrangement for a welding helmet, comprising: a fixed attachment structure; and a helmet mounting structure cooperating with the attachment structure, wherein at least two stopping positions are defined longitudinally between the attachment structure and the helmet mounting structure, the helmet mounting structure is selectively switchable between an unlocking state and a locking state, wherein in the unlocking state, the helmet mounting structure is slidable between the stopping positions relative to the attachment structure, and wherein in the locking state, the helmet mounting structure can be locked to one of the stopping positions relative to the attachment structure and can be kept there by a magnetic force generated between a pair of magnetic parts.

A helmet with an inner liner and an outer liner that slidably move in relation to each other. At least one flexible connector is positioned at the ovoid surface between the inner and outer liner that directly connects at least three of a plurality of liner ribs of the first liner segment to the second liner segment across a gap at a center portion of a second liner segment and at left and right sides of the second liner segment. The at least one flexible connector is in-molded with the first and second liner segments so that they move relative to each other when the inner liner slidably moves in relation to the outer liner by flexing the at least one flexible connector. Elastomeric anchors coupled to the outer liner and to the at least one flexible connector may be included, and a fit system may be used.