An adjustment mechanism for allowing a user to adjust a length of a headband includes a stationary case, a clutch, and a knob. The stationary case defines an opening and a circular recess. The clutch includes a cam arranged within the circular recess and a pinion extending axially from the cam such that the pinion is positioned outside the case via the opening to engage with the headband. The clutch also includes a roller located adjacent to a first cam portion of the cam. The knob has an actuating element arranged between the roller and a tab of the cam. The knob is rotatable in a first direction for allowing the user to shorten the length of the headband. The knob is rotatable in a second direction allowing the user to increase the length of the headband.

A mask includes a shield portion, wherein the shield portion is a transparent material configured to protect a face of a user, wherein the shield portion includes at least a top edge, a first hole, and a second hole, and a band portion, wherein the band portion includes a first end and a second end, wherein the band portion includes a plurality of male tabs proximate to the first end and a plurality of female portions configured to receive the male tabs to secure the band portion to a head of the user, wherein the band portion further includes a front rib portion extending away from a front surface of the band portion and in contact with the shield portion, wherein the band portion includes a first and second tab extending away from the front surface, wherein the first tab and second tab are configured to enter the first hole and second hole and secure the shield portion to the band portion.

A helmet/hood assembly includes a housing, a support ring subassembly configured to hold the assembly on a human head, a face shield, and a flexible hood attached to the housing and to the face shield, with the assembly being received, stored, used, and disposed as a single unit. The support ring subassembly pivots on the housing between a position suitable for shipping and storing the assembly and a position in which the assembly is worn. An accessory light powered by a battery may be held in place on the housing by magnetic attraction through the hood.

A ratchet mechanism for a headband of a protective helmet controls movement of overlapping rear portions of the headband with respect to one another includes a housing defining an internal cavity. The ratchet mechanism further includes an adjustment element with a pinion configured to engage respective rack gears of the overlapping rear portions of the headband within the internal cavity defined by the housing, along with a spring, which provides a torque that biases the adjustment element to a home position. The ratchet mechanism further includes a knob that is configured for movement between a first position in which it engages the pinion and controls rotation of the adjustment element, and a second position in which it disengages from the pinion, such that the spring will return the adjustment element to the home position.

A helmet/hood assembly includes a housing, a headband support assembly configured to hold the assembly on a human head, a face shield, and a flexible hood attached to the housing and to the face shield, with the assembly being received, stored, used, and disposed as a single unit. The headband support assembly pivots on the housing between a configuration suitable for shipping and storing the assembly and a configuration in which the assembly is worn. An accessory light powered by a battery may be held in place on the housing by magnetic attraction through the hood.

A safety helmet (100) includes an arched helmet shell (1), a bearing structure (3, 4.l, 4.r, 5, 6, 8, 10), an inner lining and a plurality of connection units. The inner lining comes into contact with the head of a user of the safety helmet. The bearing structure is attached on the inside to the helmet shell. Each connection unit is capable of detachably connecting the inner lining to the bearing structure. Each connection unit comprises a bearing structure-side component and an inner lining-side component. Each component is configured as exactly one connection type. A bearing structure-side component is connectable to an inner lining-side component if the two components are configured as the same connection type. The two components cannot otherwise be connected to one another or are incapable of establishing a connection between the bearing structure and the inner lining.

A safety helmet with a helmet shell, with a bearing ring, with a rotatable actuating element (14) and with a transmission unit (15.1, 15.2). The transmission unit (15.1, 15.2) transmits a rotation of the actuating element to the bearing ring, so that the head size provided is changed. A helmet shell-side transmission piece (15.1) is non-rotatably connected to the actuating element (14) such that they rotate in unison, and a bearing ring-side transmission piece (15.2) is connected mechanically to the bearing ring. The helmet shell-side transmission piece (15.1) can move both relative to the actuating element (14) and relative to the bearing ring-side transmission piece (15.2) linearly in two opposite directions. The distance between the actuating element (14) and the bearing ring can be changed thereby.

A ratchet mechanism for a hard hat and method of assembling the same are provided. The ratchet mechanism includes a knob with knob protrusions. The ratchet mechanism also includes a ratchet gear. The ratchet gear includes teeth engagement mechanisms. Each teeth engagement mechanism includes a hooking mechanism and a tooth protrusion. Each hooking mechanism is configured to engage with the knob protrusions. The ratchet mechanism also includes a band housing configured to allow a band to ratchetably move within the housing. The band housing also includes a knob engagement protrusion and a ratchet gear aperture configured with one or more teeth defining a ramped surface. The ratchet gear is disposed on the knob engagement protrusion and includes one or more ratchet gear teeth configured to engage with a set of band teeth on the band, such that the rotation of the ratchet gear tightens or loosens the band during operation.

Provided is a head band including a band main body, a supporting band, and an adjusting band, wherein the supporting band may stably support a head of a wearer by contacting and supporting the head at two or more points, and the length of the head band may be adjusted for improved wearing convenience.

A closure system for a boot or other footwear includes a tension member that is disposed within the boot and routed or guided about a path within the boot via one or more guides. The closure system also includes an adjustment member that is disposed within the boot and operably coupled with the tension member. The closure system further includes a reel based closure device having a knob that is operable to tension the tension member and to release tension from the tension member. Tensioning of the tension member adjusts a fit of the adjustment member about a foot within the boot to secure the foot within the boot and loosening of the tension member adjusts the fit of the adjustment member about the foot to allow the foot to be more easily removed from the boot.