Machines and machine tools; motors and engines (not for land vehicles); machine coupling and transmission components (not for land vehicles); agricultural implements other than hand-operated; impellers; air impellers for waste water treatment units; pumps (machines); pumps for use in agriculture or horticulture (machines); water pumps for aerating ponds; water pumps; aerating pumps; aeration pumps for bodies of water; engine driven water pumps; circulating pumps; machines for making automotive water pumps; liquid aerators (apparatus); water wheels for pumping water or for generating power; water submersible pumps; attachments and accessories for pumps in this class; floating frames for pumps and separators; shore mounted frames for pumps and separators; effluent treatment machines to separate water from contaminants; separators for separating solids from liquids; separators for liquids; disc shaped rotating aeration apparatus.