US Patent 10112734 Collapsible material collection apparatus

A collapsible material collection apparatus for a container comprises a receiving funnel; a support frame; a left connection frame; a right connection frame; a connection means connecting the left connection frame to the left support frame and the right connection frame to the right support frame; a coupling means coupling the left connection frame with the right connection frame; wherein the left funnel wall is configured to be foldable inwardly with respect to the funnel floor; wherein the right funnel wall is configured to be foldable inwardly with respect to the funnel floor; and wherein the left support frame and the right support frame are configured so that the left support frame and the right support frame are retractable inwardly or expandable outwardly relative to each other.