06854133 is referenced by 34 patents and cites 83 patents.

Protective headgear configured for protection of a portion of a wearer's head, including a resilient outer shell, a layered composite liner including a multiplicity of deformable layers, each layer having a different stiffness than adjacent layers, and wherein a layer has a higher stiffness than that of adjacent layers on either side, and a retention system configured to resist upward/rearward rotation of the headgear with respect to the wearer's head to expose the forehead, due to hydrodynamic or aerodynamic forces.

Title
Protective headgear for whitewater use
Application Number
10/438754
Publication Number
6854133 (B2)
Application Date
May 14, 2003
Publication Date
February 15, 2005
Inventor
Andrew F Conn
Baltimore
MD, US
Michael C Cordeiro
Baltimore
MD, US
Chang Lee
Lawrenceville
GA, US
Agent
Thorpe North & Western
Assignee
Whitewater Research and Safety Institute
UT, US
IPC
A42B 007/00
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