US Patent 10497291 Frame for a grain bin placard

A frame for displaying a placard on a grain bin is attached to the grain bin with conventional threaded fasteners having shank portions and head portions. The head portions of the fasteners attaching the frame to the bin do not interfere with the placard's insertion into the frame by way of ramp-like protuberances formed into the frame portions above where the fasteners are located. The protuberances deflect the placard over the fasteners' heads and allow the placard to be fully inserted into the frame with either a frictional, clearance or interference fit between the fastener and the frame.