Patent ID: 9290363
Filing Date: 2016-03-22
CPC Classification: B66C

Claim Text:
1. A method of making a beam comprising: a) providing a first side panel; b) providing a second side panel; c) providing a top panel; d) providing a bottom panel, the bottom panel being made using a high energy-density welding process to weld at least three pieces of steel together to make the bottom panel; and e) using a high energy-density welding process to weld the first side panel to the top panel and the bottom panel to form a top corner and a bottom corners of the beam, and to weld the second side panel to the top panel and to the bottom panel to form another top corner and another bottom corner of the beam to form a four panel beam, with each top corner being made from an edge surface of the top panel butting up against an inside surface of one of the first side panel and the second side panel, wherein a plane defined by said inside surface of one of the first side panel and the second side panel is parallel to an outside surface of one of the first side panel and the second side panel, with the welds occurring at the top corner where the edge surface of the top panel butts up against the inside surface of one of the first side panel and second side panel, and with each bottom corner being made from an edge surface of one of the first side panel and the second side panel butting up against an upper surface of the bottom panel, with the welds occurring at the bottom corners where the edge surface of one of the first side panel and the second side panel butts up against the upper surface of the bottom panel.