THE FOLLOWING IS SOME INFORMATION FOR FUTURE DISCUSSIONS
Calibrated headform without headband and just the helmet 147.95 gs.
Forcefield headband placed inside helmet-forehead impact-108.89 gs
26.4% absorption of forces
A major competitor’s headband placed inside helmet-forehead impact-138.67
6.2% absorption of forces
(This result is no different than placing a Nike sweatband in the helmet) see below
This result refutes the manufacturer’s claim that it reduces the forces on impact when placed in a helmet.
At 2 feet drop, 3.54 meters/second velocity; headform only on a MEP pad,
Shore A durometer hardness-calibrated at 285.16 gs
ForceField headband 201.61gs 29% absorption of forces
A major competitor’s headband 227.05 20% absorption of forces
At 18” drop, 3.02 meters/second, ; headform only on a MEP pad,
Shore A durometer hardness-calibrated at 235.84 gs
ForceField headband 157.71 33% absorption of forces
A major competitor’s headband 181.15 23% absorption of forces
At 12” drop, 2.45 meters/second; headform only on a MEP pad,
Shore A durometer hardness-calibrated at 183.59gs
ForceField headband 108.89 40.7% absorption of forces
A major competitor’s headband 129.99 29% absorption of forces
Conclusions
1. The competitor’s headband does not absorb 50% of the impact forces
2. The competitor’s headband is useless in conjunction with a helmet.
The in the type of polymer in the Forcefield headband was the cause of the lowering of those values. The material we originally selected for the headbands was 1/4 inch thick 6 lb. density Vinyl Nitrile. The product is made by the DERTEX Corporation in Boston.
The tests documented above are more severe than what a young soccer player would experience in a soccer match. What it does prove is that no matter what level of force was applied, the competitor’s headband was significantly lower than the Forcefield headband in performance at all levels.
Therefore, if the test forces were low enough (McGill University testing) at the point that the Forcefield headband absorbed and dissipated 50+% of the forces.
At the same testing levels, the competitor’s headband would have values well below the 50% level. The competitor’s headband is a blatant infringement on all of our headband patents.
The tests performed at McGill University documented the 50-80% absorption and dissipation of forces for the Forcefield headband.
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