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In 2002, Riddell released a new helmet design called the Revolution or "Revo" for short [9] The newer design was released in response to a study on concussions. The design became popular in the NFL and NCAA , being used by notables such as Peyton Manning , Dwight Freeney , Casey Hampton , and Brady Quinn , as well as having been used by Eli ...
Revolution helmets are a line of football helmets produced by Riddell Sports Group. The helmet brand is the most popular model in use in the National Football League, used by 83% of the players in the league as of 2008. [1] The most recent model in the Revolution line is the Speedflex helmet.
In addition, Riddell has recently come out with a new design of helmets, the Riddell Speed Flex. This helmet came out in 2014. [7] This new helmet uses elements of Riddell's older helmets, the 360 and the Revolution, such as Side Impact Protection and All Points Quick Release face mask attachment system. [8]
These rocks reach the greenschist, amphibolite, or granulite facies and are the most common of metamorphic rocks produced by regional metamorphosis. The association of an outer high-pressure, low-temperature metamorphic zone with an inner zone of low-pressure, high-temperature metamorphic rocks is called a paired metamorphic belt. The main ...
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In 1971, Morgan, now chairman of the board of Riddell received a patent for "Energy Absorbing and Sizing Means for Helmets." The result were the new HA-91 and HA-92 energy-absorbing, "microfit" helmets. They had valves on their crown to allow air to be pumped into vinyl cushions that were crammed into every space inside the helmet.
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3579 S High St, Columbus, OH · Directions · (614) 409-0683