US Patent 6951323 Gutter hanger

A new half round gutter hanger provides a stronger product and maintains circles that are interchangeable with existing shanks installed on structures. A double thickness center section has four precise holes located on an engagement surface that is more than two times larger than the prior plate. Extrusions extending from around the through-holes in the circles fit tightly in holes in the double thickness mounting extensions of the plates. A fastener inserted through a single one of the holes holds the circle supported on the plate. Engaging the rolled lip with both end hooks of a U-shaped wire spring extending from the closed slot in the opposite end completes the installation.