A collapsible aerodynamic helmet for a rider of a bicycle or vehicle is provided. The collapsible aerodynamic helmet includes a body member wearable by the rider. The collapsible aerodynamic helmet also includes a tail support member outwardly extending laterally towards the back of the body member. The tail support member incudes a cut-out side portion on each side of the body member that extends in a specified shape to accommodate the shoulders of the rider. The tail support member also includes a back support member coupled to the cut-out side portion to complement the shape of the rider's shoulders and back. The collapsible aerodynamic helmet further includes a securing means for compactly securing the tail member for coupling with conventional helmets.

A helmet is disclosed having a padding element removably constrained to the shell and provided with a first seat so that a first protrusion integral with the shell is reversibly engaged, reversible male-female coupling members to reversibly couple the shell and the padding element, which are adapted to define a hinge point for the relative rotation between the shell and the padding element. The helmet has restraining members to selectively restrain and release the first protrusion in and from the first seat. The restraining members are movable between a first restraint position to restrain the first protrusion in the first seat, so that the relative rotation between the shell and the padding element is prevented. A second disengagement position of the first protrusion from the first seat is also provided so that the relative rotation between the shell and the padding element is allowed.

A helmet for receiving the head of a hockey or lacrosse player, the helmet having an outer shell and an inner lining covering at least partially the inner surface of the outer shell. In one embodiment, the helmet comprises a skeleton at least partially covered by the inner lining, a movable occipital pad and movable temple pads. The inner lining can be made of an absorptive material such as foam, expanded polypropylene or expanded polyethylene and can be overmolded onto the skeleton. The occipital pad and the temple pads may be arranged with an inward bias so as to help the helmet self-adjust to provide an advantageous fit on the player's head. In some embodiments, the outer shell and skeleton, or the outer shell and the inner lining, cooperate to define a ventilation system.

A personal protection system for providing a sterile barrier around medical/surgical personnel. The system includes a helmet over which a hood or a toga suspended. A microphone, an amplifier and a speaker are mounted to the helmet. Speech of the individual wearing the personal protection system is picked up by the microphone and amplified speech is broadcast by the speaker. The speaker is outwardly directed so as to broadcast the speech out through the hood or toga covering the helmet.

A helmet that includes vents in the shell and removable plugs that may be positioned in the vents to provide an airtight seal while maintaining the aerodynamic shape of the helmet. The vent has an outer vent opening in the outer wall surface of the shell and an inner vent opening in the inner wall surface of the shell. The plug includes a resilient lower surface and an upper surface opposite the resilient lower surface. The resilient lower surface has a lower peripheral lip that compresses when the plug is pushed through the outer vent opening and the inner vent opening and that subsequently expands after the lower peripheral lip passes through the inner vent opening so that the lower peripheral lip engages a portion of the inner wall surface of the shell. The upper surface has an upper peripheral lip configured to conform to a portion of the outer wall surface of the shell when the plug is inserted in the vent.

A helmet that includes vents in the shell and removable plugs that may be positioned in the vents to provide an airtight seal while maintaining the aerodynamic shape of the helmet. The vent has an outer vent opening in the outer wall surface of the shell and an inner vent opening in the inner wall surface of the shell. The plug includes a resilient lower surface and an upper surface opposite the resilient lower surface. The resilient lower surface has a lower peripheral lip that compresses when the plug is pushed through the outer vent opening and the inner vent opening and that subsequently expands after the lower peripheral lip passes through the inner vent opening so that the lower peripheral lip engages a portion of the inner wall surface of the shell. The upper surface has an upper peripheral lip configured to conform to a portion of the outer wall surface of the shell when the plug is inserted in the vent.

Aspects of the subject disclosure may include, for example, a helmet suspension system including a number of levers, wherein a first lever of the number of levers rotates about a fulcrum in response to an impact force of a collision between a helmet shell and a foreign object to obtain a lever response. The system includes a sacrificial assembly including a first deformable member, wherein the sacrificial assembly is in communication with a group of levers of the number of levers. A first strain applied to the first deformable member according to the lever response to obtain a first stress response of the first deformable member based on a first stress-strain relationship including a non-linear response. The first stress response of the first deformable member includes the non-linear response, wherein the first stress response reduces a portion of the impact force transmitted to a body of a user. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a helmet suspension system including a number of levers, wherein a first lever of the number of levers rotates about a fulcrum in response to an impact force of a collision between a helmet shell and a foreign object to obtain a lever response. The system includes a sacrificial assembly including a first deformable member, wherein the sacrificial assembly is in communication with a group of levers of the number of levers. A first strain applied to the first deformable member according to the lever response to obtain a first stress response of the first deformable member based on a first stress-strain relationship including a non-linear response. The first stress response of the first deformable member includes the non-linear response, wherein the first stress response reduces a portion of the impact force transmitted to a body of a user. Other embodiments are disclosed.

Embodiments of the present disclosure provide for a modular helmet apparatus and system comprised of a removable outer shell disposed on an inner frame. The disclosed football helmet provides for enhanced energy diffusion through the use of one or more energy diffusion areas disposed on an outer shell of the helmet, the one or more energy diffusion areas being configured to align with the energy diffusion zones of the frame. Embodiments of the present disclosure enables a user to quickly and easily replace or swap the outer shell of the helmet with a second or replacement shell by selectively coupling the desired outer shell with the frame.

Embodiments of the present disclosure provide for a modular helmet apparatus and system comprised of a removable outer shell disposed on an inner frame. The disclosed football helmet provides for enhanced energy diffusion through the use of one or more energy diffusion areas disposed on an outer shell of the helmet, the one or more energy diffusion areas being configured to align with the energy diffusion zones of the frame. Embodiments of the present disclosure enables a user to quickly and easily replace or swap the outer shell of the helmet with a second or replacement shell by selectively coupling the desired outer shell with the frame.