The wealth gap between the richest Americans and the typical family more than doubled over the past 50 years.In 1962, the top 1% had 125 times the net worth of the median household. That shot up to 288 times by 2010, according to a new report by the left-leaning Economic Policy Institute.That trend is happening for two reasons: Not only are the rich getting richer, but the middle class is also getting poorer.