A head unit system (24) for a head (22) of a user (20), including a headpiece (26) for being worn over the head (22) with a support structure (28) shaped to be worn over the head (22). A shield mount (30) attached to the support structure (28) is arranged for supporting a face shield (32) adjacent to the head (22). A headpiece connector (34) is attached to the support structure (28) and has a headpiece contact (36) configured for electrical connection. First and second peripheral devices are provided for being secured to the headpiece (26) for concurrent movement, and each respectively has a device connector (40) with a device contact (42) configured for electrical connection. The device connectors (40) and the headpiece connector (34) cooperate to releasably attach one of the respective peripheral devices to the headpiece (26) in a secured configuration (44) with the respective headpiece contact (36) and the device contact (42) abutting in the secured configuration (44) so as to facilitate electrical connection between the headpiece (26) and the secured peripheral device.

A headband for a protective helmet comprises a front portion configured to be secured to the protective helmet; a left rear portion that is selectively connected to the front portion; a right rear portion that is selectively connected to the front portion and is configured to overlap the left rear portion; and a means for securing a position of the left rear portion relative to the right rear portion, such as a ratchet mechanism. A headband kit includes multiple left rear portions, each of which can be selectively connected to the front portion, and multiple right rear portions, each of which can be selectively connected to the front portion.

A ratchet assembly for a head protection device is provided. The ratchet assembly comprises a first cover and a ratchet gear. The first cover defines an aperture and has a locking element disposed along the aperture. The ratchet gear comprises a plurality of ratchet gear teeth, and the locking element is engaged with a ratchet gear tooth of the plurality of ratchet gear teeth of the ratchet gear to restrict rotation of the ratchet gear in a direction. The ratchet assembly also comprises a knob and a second cover. The knob comprises a plurality of knob gears disposed on the interior of the knob, and the second cover has a protrusion. The knob is coupled to the protrusion of the second cover.

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.

The present application discloses a helmet retention system for securing a helmet to the head of a user. In certain versions, the helmet retention system comprises a rear portion connected the rear of the helmet, a chin portion configured to receive the chin of the user, a first side upper strap extending from the rear portion to the front of the helmet, a second side upper strap extending from the rear portion to the front of the helmet, a first side lower strap extending from the rear portion to the chin portion, a second side lower strap extending from the rear portion to the chin portion, and an adjustment device operably attached to the rear portion. The adjustment device is configured to selectively and simultaneously adjust the length of the first side upper strap and the second side upper strap between the rear portion and the front of the helmet and simultaneously adjust the length of the first side lower strap and the second side lower strap between the rear portion and the chin portion.

The disclosed invention relates to a head lamp including a front main band and a rear main band present along the sagittal suture, wherein a front surface of the rear main band in contact with the back head of the user is concave. The head lamp has improved wearing comfort and reduced failure rate.

Helmet retention systems including a dial adjustment mechanism for adjusting the effective length of a head band are described. The dial adjustment mechanisms include a separator to separate portions of the head band during adjustment.

The present technology relates generally to protective helmets with non-linearly deforming members. Helmets configured in accordance with embodiments of the present technology can comprise, for example, an inner layer, an outer layer, a space between the inner layer and the outer layer, and an interface layer disposed in the space. The interface layer comprises a plurality of filaments, each having a height, a longitudinal axis along the height, a first end proximal to the inner layer, and a second end proximal to the outer layer. The filaments are sized and shaped to span the space between the inner layer and the outer layer. The filaments are configured to deform non-linearly in response to an external incident force on the helmet.

The present technology relates generally to protective helmets with non-linearly deforming members. Helmets configured in accordance with embodiments of the present technology can comprise, for example, an inner layer, an outer layer, a space between the inner layer and the outer layer, and an interface layer disposed in the space. The interface layer comprises a plurality of filaments, each having a height, a longitudinal axis along the height, a first end proximal to the inner layer, and a second end proximal to the outer layer. The filaments are sized and shaped to span the space between the inner layer and the outer layer. The filaments are configured to deform non-linearly in response to an external incident force on the helmet.

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.