Patent 11974703 was granted and assigned to Kohler Co. on May, 2024 by the United States Patent and Trademark Office.
An apparatus for a portable toilet includes a film storage compartment and a plurality of transport wheels. The film storage compartment is configured to store a liner having a tubular shape. The plurality of transport wheels is configured to transport the liner through a serpentine space. At least one of the plurality of transport wheels includes a high friction area and a hollow area.