2 Patent LiabilityData Collection : Accelerometers mounted inside the football helmet measure impacts.Data Recording : Data from the accelerometers are stored on a mass memory device.Notification : Officials are notified upon a possible injury.
4 Riddell Inc. HITS Helmet US Patent:Riddell Inc. HITS HelmetSystem and method for measuring the linear and rotational acceleration of a body part.Filled October 10, 2001Patent covers the position of accelerometers around the head.Patent covers algorithm used to calculate impact levels from single axis-accelerometers.
5 Riddell Inc. HITS Helmet US Patent:Riddell Inc. HITS HelmetAccelerometer placement for best accuracy (spaced 120o°apart).Each accelerometer’s data is fed into an equation that generates a cosine wave and compares them to known data. One is chosen as a best fit using least squares regression techniques.Impact location, direction, and magnitude is found from this algorithm.
6 Riddell Inc. HITS Helmet Patent Liability: ( )Riddell Inc. HITS HelmetPossible literal infringement.We have 3 accelerometers placed throughout the helmet at the 0o, 120o, -120o locations.We do not use a cosine best fit method.We do not use single-axis accelerometers.Solution:Keep 3 accelerometers but place them at different locations. Maybe 0o, 140o, -140o.Increase the number of accelerometers.
7 Head Acceleration-monitoring Technology (HAT) US Patent:Head Acceleration-monitoring Technology (HAT)Helmet system including at least three accelerometers and mass memory and method for recording in real-time orthogonal acceleration.Filled June 11, 1997Recording head movement during a sport or other activity into mass memory for later study.Memory can be local or sent wirelessly to another device’s storage medium.
8 Head Acceleration-monitoring Technology (HAT) Patent Liability: ( )Head Acceleration-monitoring Technology (HAT)Possible literal infringement.We do record all significant head movement onto a removable memory card. Data is time stamped for future reference and study.Solution:Remove the ‘record threshold’ and only record impacts that trigger a sideline alert.Limit the user from setting the trigger threshold too low.Do not store raw data, only calculated results.
9 Helmet-mounted Injury Notification System US Patent:Helmet-mounted Injury Notification SystemA signaling device is installed in headwear and includes sensing devices for detecting linearly and rotationally directed impacts above a selected magnitude.Filled December 20, 1995Uses LEDs mounted on helmet to notify officials, players, coach or other supervisor when a player is potentially injured.
10 Helmet-mounted Injury Notification System Patent Liability ( ):Helmet-mounted Injury Notification SystemPossible infringement under doctrine of equivalence.The Instrumented Football Helmet impact notification feature does not use any perceivable light or audio signals.Solution:Possible licensing or royalty fees.