Abstract: The present invention relates to an aeration device for use in a liquid medium. The device includes a housing adapted to float within the medium such that a top portion thereof remains above a top surface of the medium. The housing has a bottom portion and an open side portion. The device further includes a hose affixed to the bottom portion of the housing substantially parallel to the surface of the liquid medium. The hose has a wall with a plurality of pores formed therein. The device further includes a gas-supplying pipe affixed to the hose and means for supplying a gas to the pipe such that the gas passes through the pipe and into the hose.

Abstract: The present invention relates to an aeration device for use in a liquid medium. The device includes a housing adapted to float within the medium such that a top portion thereof remains above a top surface of the medium. The housing has a bottom portion and an open side portion. The device further includes a hose affixed to the bottom portion of the housing substantially parallel to the surface of the liquid medium. The hose has a wall with a plurality of pores formed therein. The device further includes a gas-supplying pipe affixed to the hose and means for supplying a gas to the pipe such that the gas passes through the pipe and into the hose.

Abstract: An aeration device or diffuser is disclosed. The diffuser preferably includes a porous hose adapted to allow gas to escape therefrom, a rigid element disposed within the hose, the rigid element being constructed of material denser than water and a fitting suitable for attaching the hose to an air supply, the fitting disposed within the hose at one end of the hose. Methods of use of the diffuser and of assembling the diffuser are also disclosed.

Abstract: A two-compartment container has a lid portion and a base portion hingedly connected to one another and openable and closable in the manner of a clamshell. Both the lid portion and the base portion have partitions, which extend from the hinge and which are aligned with one another. When the container is closed, the partitions abut against one another, effectively isolating the two compartments formed in the base portion by its partition from one another. The base portion includes a locking flap which fits into a gap between the partition in the lid portion and its face and seals it to further isolate the two compartments from one another.

Abstract: A multi-layered hose comprising, in cross section, a) a plurality of layers defining b) a channel, said hose having a density less than that of water at the same temperature. The hose is particularly suitable for use in connection with substantially nonvolatile fluid transfer, for example pool cleaning and the like since it is capable of floating on a water surface.

Abstract: A two-compartment container has a lid portion and a base portion hingedly connected to one another and openable and closable in the manner of a clamshell. Both the lid portion and the base portion have partitions, which extend from the hinge and which are aligned with one another. When the container is closed, the partitions abut against one another, effectively isolating the two compartments formed in the base portion by its partition from one another. The base portion includes a locking flap which fits into a gap between the partition in the lid portion and its face and seals it to further isolate the two compartments from one another.

Abstract: A packaging container is integrally formed from plastic foam material, such as extruded polystyrene foam. The packaging container has a base, four sidewalls extending from the base, and four corners, each extending between a pair of adjacent sidewalls. The sidewalls have substantially rectangular protrusions extending from the base to a top edge to strengthen the sidewalls against lateral forces. The sidewalls may also have rounded ribs which protrude into the interior of the packaging container for further reinforcement.

Abstract: A packing tray is provided for use in both cell pack and tray pack arrangements. The packing tray is unitarily formed from polystyrene foam to have a cellular structure. Cells are arranged in longitudinal rows of alternating odd and even numbers, and the cells are partially separated by cell dividers, which have at least major portions recessed within the tray.