Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A helmet having an outer liner with an inward-facing surface, an inner liner with an outward-facing surface that interfaces with the inward-facing surface of the outer liner, and a flexible tether coupling the outer liner to the inner. The inner liner is slidably coupled to the outer liner via a plurality of return springs, the plurality of return springs biasing the inner liner to a first position with respect to the outer liner.

Abstract: A helmet having an outer liner and an inner liner is disclosed. The inner liner is positioned at least partially inside the outer liner. The helmet includes at least one chin strap anchored to the outer liner and passing through an opening in the inner liner. The helmet further includes a plurality of return springs, each having a first end coupled to the outer liner, and a second end distal to the first end and coupled to the inner liner. The return springs bias the inner liner to a first position with respect to the outer liner. The inner liner is slidably coupled to the outer liner through the plurality of return springs and slidably movable relative to the outer liner between the first position and a second position where the inner liner and outer liner are rotated away from the first position.

Abstract: A helmet can include a protective shell and a layer of energy management material coupled to an inner surface of the protective shell to form a cavity for receiving a head of a user. An earpad can be coupled to the inner surface of the protective shell that comprises an inner surface that further defines a space for an ear of a user. The earpad can further include a leading edge at a front of the helmet, the leading edge extending between the outer surface of the protective shell and the inner surface of the earpad. An air intake opening can be formed at the leading edge of the earpad. An air exhaust opening can be formed at a trailing edge of the earpad. An airflow channel can extend through the earpad between the air intake opening and the air exhaust opening.

Abstract: 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.

Abstract: 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.

Abstract: A helmet having an outer liner and an inner liner is disclosed. The inner liner is positioned at least partially inside the outer liner. The helmet includes at least one chin strap anchored to the outer liner and passing through an opening in the inner liner. The helmet further includes a plurality of return springs, each having a first end coupled to the outer liner, and a second end distal to the first end and coupled to the inner liner. The return springs bias the inner liner to a first position with respect to the outer liner. The inner liner is slidably coupled to the outer liner through the plurality of return springs and slidably movable relative to the outer liner between the first position and a second position where the inner liner and outer liner are rotated away from the first position.

Abstract: A helmet comprising a helmet body and a chin bar is disclosed. The helmet body comprises an opening and two attachment anchors located opposite each other proximate a leading edge of the opening. Each attachment anchor comprises a pivot socket and a lock support. The chin bar comprises two opposing ends, each releasably coupled to a different attachment anchor. Each end of the chin bar comprises a locking mechanism engaged with a lock support of a different attachment anchor, and a pivot arm releasably and pivotally coupled to the pivot socket of the different attachment anchor. The chin bar is pivotable between a first angle and a second angle with respect to the helmet body, and the pivot arms are releasable from the pivot sockets of the helmet body while the locking mechanisms of the chin bar are disengaged from the lock supports of the helmet body.

Abstract: A helmet can include a protective shell and a layer of energy management material coupled to an inner surface of the protective shell to form a cavity for receiving a head of a user. An earpad can be coupled to the inner surface of the protective shell that comprises an inner surface that further defines a space for an ear of a user. The earpad can further include a leading edge at a front of the helmet, the leading edge extending between the outer surface of the protective shell and the inner surface of the earpad. An air intake opening can be formed at the leading edge of the earpad. An air exhaust opening can be formed at a trailing edge of the earpad. An airflow channel can extend through the earpad between the air intake opening and the air exhaust opening.

Abstract: A helmet can include a protective shell and a layer of energy management material coupled to an inner surface of the protective shell to form a cavity for receiving a head of a user. An earpad can be coupled to the inner surface of the protective shell that comprises an inner surface that further defines a space for an ear of a user. The earpad can further include a leading edge at a front of the helmet, the leading edge extending between the outer surface of the protective shell and the inner surface of the earpad. An air intake opening can be formed at the leading edge of the earpad. An air exhaust opening can be formed at a trailing edge of the earpad. An airflow channel can extend through the earpad between the air intake opening and the air exhaust opening.

Abstract: A helmet can include a protective shell and a layer of energy management material coupled to an inner surface of the protective shell to form a cavity for receiving a head of a user. An earpad can be coupled to the inner surface of the protective shell that comprises an inner surface that further defines a space for an ear of a user. The earpad can further include a leading edge at a front of the helmet, the leading edge extending between the outer surface of the protective shell and the inner surface of the earpad. An air intake opening can be formed at the leading edge of the earpad. An air exhaust opening can be formed at a trailing edge of the earpad. An airflow channel can extend through the earpad between the air intake opening and the air exhaust opening.