Hatch cover for a railroad hopper car

摘要

A hatch cover adapted to be positioned over and close a hatch opening on a railroad hopper car. The hatch cover includes a rigid panel sized to cover the hopper car hatch opening. The panel for the hatch cover includes an inner skin, an outer skin, and a core material sandwiched between and adhered to the inner and outer skins. Edge structure is secured to the panel for protecting edges of the panel.