Abstract: Disclosed are helmet and adjustable chin strap assemblies that include an adjustable chin strap retention system that solve some or all of the problems of the prior art. Specifically, disclosed are helmets and adjustable chin strap assemblies that include a helmet shell and a chin strap retention system, where the chin strap retention system includes a chin strap and an actuator that can be manipulated by the wearer using one hand to selective shorten or lengthen the chin strap in real time while the wearer is wearing the helmet and engaging in an activity. The chin strap can be configured to cleanly and simply connect to the helmet shell, with two opposing ends of the chin strap being attached to an inner component, an outer component, or between the inner and outer components of the helmet shell.

Abstract: Disclosed are adjustable helmet retention systems and helmet and adjustable retention assemblies that solve problems in the prior art. Specifically, disclosed are helmets and adjustable retention assemblies, including a helmet shell and an adjustable retention system that includes one or more retention straps or cables and one or more actuators. The adjustable retention system may comprise a single retention strap or cable having a chin strap subcomponent configured to engage a wearer's chin, a fit strap subcomponent configured to engage a wearer's head, including the occipital portion, and one or more actuators configured to selectively shorten or lengthen the retention strap or cable relative to the wearer's head. The adjustable retention system may alternatively comprise a separate chin strap and chin strap actuator and a separate fit strap and fit strap actuator.

Abstract: The present invention provides a lightweight protective helmet having an improved ventilation system therein. The protective helmet comprises an outer shell and an inner liner that are joined together to form a shell/liner composite. The ventilation system interacts with one or more ventilation ports in the protective helmet to control the flow of ambient air in and out of the interior of the protective helmet. The ventilation system may be integrated or encased within the shell/liner composite, or it may be adapted to be used on the exterior of the helmet. In addition, the ventilation system may include one of several types of interchangeable insert members to allow active or passive control of ambient air into the interior of the helmet.

Abstract: The present invention provides a lightweight protective helmet having an improved ventilation system therein. The protective helmet comprises an outer shell and an inner liner that are joined together to form a shell/liner composite. The ventilation system interacts with one or more ventilation ports in the protective helmet to control the flow of ambient air in and out of the interior of the protective helmet. The ventilation system may be integrated or encased within the shell/liner composite, or it may be adapted to be used on the exterior of the helmet. In addition, the ventilation system may include one of several types of interchangeable insert members to allow active or passive control of ambient air into the interior of the helmet.

Abstract: The present invention provides a lightweight protective helmet having an improved ventilation system therein. The protective helmet comprises an outer shell and an inner liner that are joined together to form a shell/liner composite. The ventilation system interacts with one or more ventilation ports in the protective helmet to control the flow of ambient air in and out of the interior of the protective helmet. The ventilation system may be integrated or encased within the shell/liner composite, or it may be adapted to be used on the exterior of the helmet. In addition, the ventilation system may include one of several types of interchangeable insert members to allow active or passive control of ambient air into the interior of the helmet.