Patent ID: 7287407
Filing Date: 2007-10-30
Classification: B21D

Abstract:
1. A device adapted to form a flanged ring including an elongated curved extension from an elongated straight flange with an elongated base and an elongated protrusion extending from the elongated base, the device comprising: a) a first wheel rotatable about a first rotational axis and a second wheel rotatable about a second rotational axis that is parallel to the first rotational axis, wherein corresponding outer peripheral surfaces of the first wheel and the second wheel form a first pair of opposed surfaces adapted to compress the elongated protrusion to increase a length of the elongated protrusion, the outer peripheral surface of the first wheel including a first peripheral surface portion having a first diameter and a second peripheral surface portion having a second diameter that is less than the first diameter, and the outer peripheral surface of the second wheel including a first peripheral surface portion having a first diameter and a second peripheral surface portion having a second diameter that is greater than the first diameter of the first peripheral surface of the second wheel, wherein the first and second peripheral surface portions of the first wheel are adapted to cooperate with the corresponding first and second surface portions of the second wheel to form an offset in the elongated protrusion; and b) a second pair of opposed surfaces adapted to compress an elongated base of the flange to increase the length of one portion of the elongated base relative to another portion of the elongated base.