Abstract: A sports helmet kit has a shell, attachable face guard, composite helmet liner, and fit pods to improve and customize the fit of the helmet to the wearer. The composite liner consists of a base liner and a selected group of fit elements, for example, fit pods, removably attached to the inner surface of the base liner (i.e., the surface of the base liner facing the wearer's head). The fit pods are selected from a set of fit pods having different properties, for example, different sizes, thicknesses, densities, and cross-sections. The selection of fit pods from the set may be aided by taking anatomical measurements of the wearer's head and analyzing the measurements with respect to the geometry of the helmet to produce a pressure map. The measurements may be taken by physical contact or by non-contact means. The fit pods may be selected to optimize a pressure map, and thus optimize the fit, for a given wearer of the helmet.

Abstract: A sports helmet kit has a shell, attachable face guard, composite helmet liner, and fit pods to improve and customize the fit of the helmet to the wearer. The composite liner consists of a base liner and a selected group of fit elements, for example, fit pods, removably attached to the inner surface of the base liner (i.e., the surface of the base liner facing the wearer's head). The fit pods are selected from a set of fit pods having different properties, for example, different sizes, thicknesses, densities, and cross-sections. The selection of fit pods from the set may be aided by taking anatomical measurements of the wearer's head and analyzing the measurements with respect to the geometry of the helmet to produce a pressure map. The measurements may be taken by physical contact or by non-contact means. The fit pods may be selected to optimize a pressure map, and thus optimize the fit, for a given wearer of the helmet.

Abstract: A sports helmet has composite helmet liner to improve and customize the fit of the helmet to the wearer. The composite liner consists of a base liner and a selected group of fit elements, for example, fit pods, removably attached to the inner surface of the base liner (i.e., the surface of the base liner facing the wearer's head). The fit pods are selected from a set of fit pods having different properties, for example, different sizes, thicknesses, densities, and cross-sections. The selection of fit pods from the set may be aided by taking anatomical measurements of the wearer's head and analyzing the measurements with respect to the geometry of the helmet to produce a pressure map. The measurements may be taken by physical contact or by non-contact means. The fit pods may be selected to optimize a pressure map, and thus optimize the fit, for a given wearer of the helmet.

Abstract: A NOCSAE-certified football helmet having a shell, internal padding attached to an inner surface of the shell, and a face guard attachable to the shell, is configured and designed to have a Predictive Concussion Incidence below 1.90, or 0.75 plus or minus 0.25, or in the range of 0.50 to 1.90, as measured by the 2018 Adult Football STAR Methodology. The face guard is attached to the shell at a plurality of attachment points below a line constructed through the midpoint of the height of the helmet and has an upper portion which contacts the shell above the face opening, without being attached to the shell at that point. The internal padding includes a front pad attached within the shell above the face opening, defining a first zone of a first stiffness and, adjacent to and above the first zone, a second zone of a second stiffness lower than the first stiffness. The internal padding also includes helmet liners which are not inflatable, and which contain slow response microcellular polyurethane pads.

Abstract: A NOCSAE-certified football helmet having a plastic shell, internal padding attached to an inner surface of the shell, and a face guard attached to the shell, is configured and designed to have a Predictive Concussion Incidence below 1.90, or 0.75 plus or minus 0.25, or in the range of 0.50 to 1.90, as measured by the 2018 Adult Football STAR Methodology. The face guard is attached to the shell at a plurality of attachment points below a line constructed through the midpoint of the height of the helmet and has an upper portion which contacts the shell above the face opening, without being attached to the shell at that point. The internal padding includes a front pad attached within the shell above the face opening, defining a first zone of a first stiffness and, adjacent to and above the first zone, a second zone of a second stiffness lower than the first stiffness. The internal padding also includes helmet liners which are not inflatable, and which contain slow response microcellular polyurethane pads.

Abstract: A sports helmet has composite helmet liner to improve and customize the fit of the helmet to the wearer. The composite liner consists of a base liner and a selected group of fit elements, for example, fit pods, removably attached to the inner surface of the base liner (i.e., the surface of the base liner facing the wearer's head). The fit pods are selected from a set of fit pods having different properties, for example, different sizes, thicknesses, densities, and cross-sections. The selection of fit pods from the set may be aided by taking anatomical measurements of the wearer's head and analyzing the measurements with respect to the geometry of the helmet to produce a pressure map. The measurements may be taken by physical contact or by non-contact means. The fit pods may be selected to optimize a pressure map, and thus optimize the fit, for a given wearer of the helmet.

Abstract: A NOCSAE-certified football helmet having a plastic shell, internal padding attached to an inner surface of the shell, and a face guard attached to the shell, is configured and designed to have a Predictive Concussion Incidence below 1.90, or 0.75 plus or minus 0.25, or in the range of 0.50 to 1.90, as measured by the 2018 Adult Football STAR Methodology. The face guard is attached to the shell at a plurality of attachment points below a line constructed through the midpoint of the height of the helmet and has an upper portion which contacts the shell above the face opening, without being attached to the shell at that point. The internal padding includes a front pad attached within the shell above the face opening, defining a first zone of a first stiffness and, adjacent to and above the first zone, a second zone of a second stiffness lower than the first stiffness. The internal padding also includes helmet liners which are not inflatable, and which contain Poron pads.

Abstract: A fabricated nano-structure includes a substrate, a supporting stalk, a node, and at least two spatular plate portions. The supporting stalk has a first end opposite a second end. The first end of the supporting stalk is connected to the substrate. The supporting stalk has a diameter range of about 50 nanometers to about 2 microns. A node is disposed at the second end of the supporting stalk. At least two spatular plate portions are connected to the node. The at least two spatular plate portions have planar geometries and are radially distributed about the node. The at least two spatular plate portions has a ratio of a maximum plate thickness to a maximum plate length of at most about 1:20. The maximum plate length is measured along a line from a boundary of the spatular plate portion to a centroid of the node. The maximum plate length is at least about 100 nanometers.

Abstract: Described herein is a microstructure having a substrate and a plurality of nano-fibers attached to the substrate. Each nano-fiber moves between the first and second states without an external mechanical load being applied to the nano-fibers. Each nano-fiber is configured to move between a first state and a second state in response to applied electricity, magnetism, chemical solution, heat, or light. Each nano-fiber is straight in the first state and curved in the second state, and when the nano-fibers are in the second state and in contact with a contact surface, the nano-fibers adhere to the contact surface.

Abstract: Described herein are fabricated microstructures to adhere in shear to a contact surface. A fabricated microstructure comprises a substrate and a plurality of nano-fibers attached to the substrate. The nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle ?o relative to the substrate. The length L of the nano-fibers is greater than 0.627?oR2(E/w)1/2 with ?o in radians. Also described herein is a method of forming a fabricated microstructure to adhere in shear to a contact surface and a method of adhering in shear a fabricated microstructure to a contact surface.

Abstract: A fabricated nano-structure includes a substrate, a supporting stalk, a node, and at least two spatular plate portions. The supporting stalk has a first end opposite a second end. The first end of the supporting stalk is connected to the substrate. The supporting stalk has a diameter range of about 50 nanometers to about 2 microns. A node is disposed at the second end of the supporting stalk. At least two spatular plate portions are connected to the node. The at least two spatular plate portions have planar geometries and are radially distributed about the node. The at least two spatular plate portions has a ratio of a maximum plate thickness to a maximum plate length of at most about 1:20. The maximum plate length is measured along a line from a boundary of the spatular plate portion to a centroid of the node. The maximum plate length is at least about 100 nanometers.

Abstract: Described herein is a microstructure having a substrate and a plurality of nano-fibers attached to the substrate. Each nano-fiber moves between the first and second states without an external mechanical load being applied to the nano-fibers. Each nano-fiber is configured to move between a first state and a second state in response to applied electricity, magnetism, chemical solution, heat, or light. Each nano-fiber is straight in the first state and curved in the second state, and when the nano-fibers are in the second state and in contact with a contact surface, the nano-fibers adhere to the contact surface.

Abstract: Described herein are fabricated microstructures to adhere in shear to a contact surface. A fabricated microstructure comprises a substrate and a plurality of nano-fibers attached to the substrate. The nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle ?o relative to the substrate. The length L of the nano-fibers is greater than 0.627?o R2(E/w)1/2 with ?o in radians. Also described herein is a method of forming a fabricated microstructure to adhere in shear to a contact surface and a method of adhering in shear a fabricated microstructure to a contact surface.