07328462 is referenced by 56 patents and cites 26 patents.

A protective helmet of the type used in football has an external soft elastomer layer to absorb/dissipate some of the energy of an impact. Other features include a quick disconnect face guard, carbon fiber face guard with Kevlar wrap at junction points, a soft foam inner shell inside the intermediate hardened shell, and a head fitting structure including a plurality of pads, visco-elastic cells and at least one inflatable bladder. In addition, the hardened shell may be formed as a lattice frame of strips having a plurality of fibers impregnated with resin. The resin may have a dye added that will indicate if and where an impact exceeding a predetermined value is incurred by the helmet to assist a physician in diagnosing a possible head trauma injury.

Protective helmet
Application Number
Publication Number
7328462 (B1)
Application Date
February 17, 2005
Publication Date
February 12, 2008
Albert E Straus
Timonium, 21093
Richard K Thomson
A42B 3/06
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