Patent ID: 7536889
Filing Date: 2009-05-26
Classification: B21D

Abstract:
1. A rotary rolling machine comprising: a frame having a top arm; and a top roller arm housing pivotally attached with said frame; and said top roller arm housing having a top roller arm shaft having a top roller at or near a first end of said top roller arm shaft; and a bottom roller arm housing attached with said frame; and said bottom roller arm housing having a bottom roller arm shaft having a bottom roller at or near a first end of said bottom roller arm shaft; and said top roller arm shaft and said bottom roller arm shaft having a rotational coupling; and a rotational drive capable of driving one or more of said shafts; and an air spring having an ability to provide a force between two points without a necessity of maintaining a substantial alignment and positioned between said top arm of said frame and said top roller arm housing whereby said rollers substantially engage and a force is present between said rollers when said air spring is pressurized.