Philadelphia resident Marvin Cohen claimed a sudden drop tore an artery leading to his brain during a 1998 visit.
The verdict Monday marked a rare instance in which a ride safety lawsuit against the theme park giant actually went to a jury. Most are settled or dismissed before trial.
Jurors deliberated three hours before determining the ride wasn't dangerous and Disney bore no negligence.
An attorney for Cohen said the now-80-year-old man may appeal.
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Information from: Orlando Sentinel, http://www.orlandosentinel.com