Helmet with front end fit system elastic connectors
A helmet may include an outer liner and an inner liner disposed inward from the outer liner, the inner liner comprising an inner surface with at least one hole. A fit belt may comprise at least one pin coupled to an inner surface of the inner liner with the at least one hole mateably coupled with the at least one pin. An elastomeric strap may comprise an inner end and an outer end opposite the inner end. The outer end of the elastomeric strap may be coupled to an inner surface of the outer liner. The outer end of the elastomeric strap may comprise a recess and a fastener that extends through the recess of the outer end of the elastomeric strap to couple the elastomeric strap to the outer liner. The inner end of the elastomeric strap may be coupled to the fit belt.
1. A helmet comprising:
an outer liner comprising crushable foam;
an inner liner disposed inward from and nested within the outer liner such that the outer liner is stacked on top of the inner liner, the inner liner rotatable with respect to the outer liner, the inner liner comprising crushable foam and defining an inner surface with at least one hole;
a fit belt comprising a first end and a second end opposite the first end and at least one pin between the first and second end, the pin coupled to the inner surface of the inner liner at a lower edge of a front portion of the helmet with the at least one hole of the inner liner mateably coupled with the at least one pin; and
an elastomeric strap comprising an inner end and an outer end opposite the inner end between the outer liner and the inner liner, wherein:
the outer end of the elastomeric strap is coupled to an inner surface of the outer liner, the outer end of the elastomeric strap comprising a recess and a fastener that extends through the recess of the outer end of the elastomeric strap to couple the elastomeric strap to the outer liner at a lower edge thereof at the front portion of the helmet, and the inner end of the elastomeric strap is coupled to the fit belt at the lower edge of the front portion of the helmet, such that the elastomeric strap is disposed around a lower edge of the inner liner.
2. The helmet of claim 1 , further comprising:
a slip plane disposed between the inner surface of the outer liner and an outer surface of the inner liner, wherein the slip plane comprises mating surfaces of the inner liner and the outer liner and further comprises a low friction thermoplastic material.
3. The helmet of claim 1 , further comprising one or more of the inner liner and the outer liner formed of expanded polystyrene (EPS), expanded polypropylene (EPP), or expanded polyolefin (EPO).
4. The helmet of claim 1 , wherein the inner liner and the outer liner comprise mating spherical surfaces which aid in allowing the mating spherical surfaces of the inner liner and of the outer liner to rotate in relation to each other in any direction.
5. The helmet of claim 1 , wherein the elastomeric strap provides relative movement between the outer liner and the inner liner in a range of 0-30 millimeters.
6. The helmet of claim 1 , the fit belt having ends, wherein the ends of the fit belt are inserted into a fit system that adjusts a perimeter of the fit belt by drawing in or letting out the ends of the fit belt.
7. The helmet of claim 1 , wherein the elastomeric strap is coupled to the inner liner and the outer liner at points located along a lower edge of the helmet.
8. A helmet comprising:
an outer liner comprising crushable foam;
an inner liner disposed inward from and nested within the outlet liner, the inner liner rotatable with respect to the outer liner, and comprising crushable foam;
a fit belt coupled to an inner surface of the inner liner at a lower edge of a front portion of the helmet; and
an elastomeric strap comprising an inner end and an outer end opposite the inner end wherein:
the outer end of the elastomeric strap is coupled to an inner surface of the outer liner at a lower edge thereof at a front portion of the helmet, and
the inner end of the elastomeric strap is coupled to the fit belt at the lower edge of the front portion of the helmet, such that the elastomeric strap is curled around the lower edge of the inner liner and the fit belt, such that the elastomeric strap is curled around the lower edge of the inner liner and the fit belt.
9. The helmet of claim 8 , wherein the inner liner and the outer liner comprise mating surfaces comprising a spheroid, ovoid, or ellipsoid contour which aids in allowing the mating surfaces of the inner liner and of the outer liner to rotate in relation to each other in at least one desired direction.
10. The helmet of claim 8 , wherein the inner liner and the outer liner comprise mating surfaces comprising a low friction material.
11. The helmet of claim 8 , further comprising:
the outer end of the elastomeric strap comprises a recess; and
a fastener that extends through the recess of the outer end of the elastomeric strap to couple the elastomeric strap to the outer liner.
12. The helmet of claim 8 , wherein the elastomeric strap provides relative movement between the outer liner and the inner liner in a range of 0-30 millimeters.
13. The helmet of claim 8 , wherein the elastomeric strap is coupled to the inner liner and the outer liner at points located along a lower edge of the helmet.