CHICAGO -- Pro Football Hall of Famer and former Heisman Trophy winner Paul Hornung sued equipment manufacturer Riddell Inc. on Thursday, saying football helmets that he wore during his professional career in the 1950s and 60s failed to protect him from brain injury.Attorneys for the 80-year-old Hornung filed the civil lawsuit in Cook County Circuit Court in Chicago, naming the Rosemont-based company as the defendant. It seeks unspecified damages.Hornung suffered multiple concussions as a running back for the Green Bay Packers and has been diagnosed with dementia, the lawsuit says. It said that the neurodegenerative disease has been linked to repetitive head trauma.Concussion lawsuits from athletes have become more common in recent years amid growing awareness about the long-term consequences of repeated blows to the head and Riddell is also fighting litigation elsewhere. But suits from athletes whose playing days were as far back as the 1950s are rare.Riddell began producing helmets out of plastic in 1939, touting them as safer alternatives to ones -- more common at the time -- fashioned from leather, according to the eight-page filing. Hornung, it says, wore a leather helmet when he played for Notre Dame in college but switched to the Riddell-made plastic helmets in the NFL.Erin Griffin, a spokeswoman for Riddell, declined comment in an email, saying, Its our policy not to comment on pending litigation.Hornung won the Heisman in 1956 while at Notre Dame, where he played quarterback. The Packers selected him as the No. 1 overall draft pick a year later. He was the NFL MVP in 1962 and he played on four championship teams (1961, `62, `65 and `66).One of Hornungs lawyers said Riddell knew enough about the perils of concussions more than five decades ago to warn players.Studies dating back to the 19th century linked head trauma to permanent brain damage, but Riddell failed to communicate the danger to Mr. Hornung, the attorney, William T. Gibbs, said in a written statement.Hornungs wife, Angela Hornung, is also named as a plaintiff in the suit, which says she suffered and will continue to suffer the loss of her husbands affection and companionship as a result of his injuries.Riddell has successfully fought some litigation. A Los Angeles jury in 2014 found that Riddell wasnt liable for the severe brain injury of a high school football player who suffered a helmet-to-helmet hit during a game.Riddell, which provides helmets to every level of football -- from the pros to Pop Warner -- has said publicly previously that it has devoted enormous resources to developing equipment that can reduce the risk of a devastating head injury.---Follow Michael Tarm on Twitter at http://twitter.com/mtarmAdidas Ultra Boost 19 Rebajas . Galatasaray said in a statement on its website Monday that Mancini signed a three-year contract and will be paid 3.5 million euros for the upcoming season, with his salary upped to 4. Adidas NMD R2 Hombre . All of the scoring came in the final 20:04. Lucic scored on a power play at 15:46 of the third period, when he tipped a shot over Stars goalie Kari Lehtonen for a 3-1 lead. http://www.baratasnmd.com/adidas-gsg-baratas.html .Y. -- Injured Buffalo Sabres forward Marcus Foligno did not practice with the team Monday and head coach Ron Rolston said its unlikely hell play in Wednesdays season opener in Detroit. Adidas NMD R2 Baratas .Y. -- Buffalo Bills coach Doug Marrone has drawn on his Syracuse connections once again by hiring Rob Moore to take over as receivers coach. Adidas Prophere España . Barcelona also left injured defenders Carles Puyol, Javier Mascherano and Jordi Alba out of its squad for the trip to Glasgow. That means that Marc Bartra will probably start again in the centre of the defence alongside Gerard Pique. ' ' '