Patent ID: 8646304
Filing Date: 2014-02-11
Classification: B21D,B65D,Y10T

Abstract:
1. A method of forming a grain bin floor panel comprising: a) providing a unitary piece of sheet metal; b) providing a roll former comprising a plurality of rollers and at least one joining tool arranged to progressively form the unitary piece of sheet metal into a floor panel structure; c) using the rollers of the roll former, forming a central support leg of the floor panel structure to extend in a longitudinal direction between opposing ends of the floor panel structure by: d) using said at least one joining tool, joining the first and second upright portions to one another in proximity to the upper ends; e) using the rollers of the roll former, folding the sheet metal to define a first floor surface, a second floor surface, a first side support leg and a second side support leg of the floor panel structure wherein: f) providing ventilating perforations in the first floor surface and the second floor surface; wherein the lower portion of the central support leg is bent to be concave prior to defining at least one of the first floor surface, the second floor surface, the first side support leg and the second side support leg of the floor panel structure.