Football helmet
The present invention is a football helmet designed to reduce the occurrence of concussions and subconcussive impacts to the brain through use of a novel exterior shape and sandwich of materials. The present invention also reduces the occurrence of neck injuries through the use of a flexible neck support that provides protection against frontal impacts without restricting a player's range of motion.
1. A helmet comprising:
a rigid layer capable of being worn over a user's head;
an inner layer fixed to an inside surface of the rigid layer and capable of absorbing impact energy; and
an outer layer fixed to an outside surface of the rigid layer and capable of absorbing impact energy, and
wherein each of said inner and outer layers comprises a plurality of grooves for allowing flexure of the helmet in a vicinity of a neck of the user, and wherein said rigid layer ends at a point above said plurality of grooves and said inner and outer layers extend below said point.
2. The helmet of claim 1 , wherein said inner layer has a density between 15 and 50 pounds per cubic foot.
3. The helmet of claim 2 , wherein said outer layer has a density between two and 15 pounds per cubic foot.
4. The helmet of claim 1 , wherein said inner layer comprises a viscoelastic foam.
5. The helmet of claim 4 , wherein said outer layer comprises a viscoelastic foam.
6. The helmet of claim 5 , wherein the viscoelastic foam of said inner layer has an open-cell structure and is capable of molding to the contour of the head of the user wearing said helmet.
7. The helmet of claim 6 , wherein the viscoelastic foam of said outer layer has an open-cell structure and is capable of absorbing high impact energy.
8. The helmet of claim 7 , wherein said inner layer has a density between 15 and 50 pounds per cubic foot.
9. The helmet of claim 8 , wherein said outer layer has a density between two and 15 pounds per cubic foot.
10. The helmet of claim 9 , wherein said inner layer further comprises an additional layer of viscoelastic foam with a density between two and 15 pounds per cubic inch.
11. The helmet of claim 10 , wherein said helmet further comprises a layer of abrasion resistant material fixed to an outer surface of said outer layer.
12. The helmet of claim 11 , wherein said abrasion resistant material comprises a polyester material.
13. The helmet of claim 11 , wherein said abrasion resistant material comprises carbon fiber cloth.
14. The helmet of claim 11 , wherein said rigid layer further comprises carbon fiber.
15. The helmet of claim 14 , wherein said outer layer has a cone shaped peak with a rounded apex.
16. The helmet of claim 15 , wherein said apex is located on top of a centerline of the helmet when viewed from a front of the helmet.
17. The helmet of claim 16 , further comprising two ear holes, each ear hole located substantially over a respective ear of the user when the user is wearing said helmet;
wherein said apex is located at rear of a vertical line drawn from the center of one ear hole when said helmet is upright and viewed from a side of the helmet.
18. The helmet of claim 17 , wherein when said helmet is upright and viewed from the side, when a line is drawn between one ear hole and said apex, the angle between the line drawn and the vertical line of claim 17 is between zero and 35 degrees.
19. The helmet of claim 1 , wherein one or more of said grooves have a curved profile.