A surface cleaning apparatus has a fluid distribution system for storing and delivering fluid to a surface to be cleaned, and includes a supply tank defining a chamber with a fill opening and a fill cap pivotable between an open position and a closed position to selectively cover the fill opening and which includes a funnel for filling the supply tank.

A foldable funnel includes a bowl having a continuous outer wall having a top edge defining an opening to an interior space. The continuous outer wall includes a plurality of spaced apart bowl living hinges and a first flange extending from the top edge, where the first flange having a width and a length. The foldable funnel includes a stem extending from the bowl, the stem having a through bore in fluid communication with the interior space wherein a cross-sectional area of the through bore is less than a cross-sectional area of the opening. The bowl is configured to be positioned into a first position wherein the bowl is configured to transfer a fluid from the bowl through the opening and the interior space and into the through bore in the stem. The bowl is also configured to be positioned into a second position wherein the bowl is folded about the plurality of living hinges into a compact configuration wherein the first flange having the length and the width is positioned over the opening of the bowl in the compact configuration to minimize the accumulation of dirt and grime in the bowl after use.

The present disclosure relates to improved metering hoppers for dispensing solid materials, particularly in the context of metered dispensation of solid pellets to feed reactors, in addition to associated methods, systems, and apparatuses. The disclosure relates, in various embodiments, to shielded metering hoppers configured to control the flow of solid material to a feed slot. In some cases, the disclosure relates to pressurized metering hoppers suitable for dispensing solid fuel into gas-generating reactors. Accordingly, the disclosure also relates to pressurized metering hoppers for solid materials, according to some embodiments.