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A method of fabricating sheet metal panels and the article produced thereby. According to one form, the method of fabrication includes the steps of providing a panel of sheet metal, perforating the panel to provide a plurality of holes, forming the panel into a preselected curve about a longitudinal

A method of fabricating sheet metal panels and the article produced thereby. According to one form, the method of fabrication includes the steps of providing a panel of sheet metal, perforating the panel to provide a plurality of holes, forming the panel into a preselected curve about a longitudinal centerline, forming the leading edge portion of the panel into a front flange, forming a shoulder in the panel centered on the holes and extending perpendicularly from a surface thereof, bending an outer portion of the shoulder into a lip, and bonding the portions of the panel comprising the shoulder and lip.

대표청구항 ▼

A fabricated sheet metal panel comprising: a plate member having first and second oppositely facing surfaces bounded by a leading edge, a trailing edge and first and second opposing side edges; said plate member further comprising an integral shoulder spaced from and extending substantially parallel

A fabricated sheet metal panel comprising: a plate member having first and second oppositely facing surfaces bounded by a leading edge, a trailing edge and first and second opposing side edges; said plate member further comprising an integral shoulder spaced from and extending substantially parallel to said trailing edge thereof; said shoulder comprising substantially abutting, folded sections of said plate member and including a base extending from said first surface and a lip extending from an outer end of said base portion, said folded sections having abutting surfaces which comprise portions of said second surface of said plate member.