Abstract: An apparatus to move and aerate liquid is disclosed. The apparatus includes a frustoconical base forming a gas chamber. The gas chamber includes one or more inner apertures to allow gas flow into a mixing chamber to aerate and, subsequently, move liquid into a liquid riser for subsequent movement back into the liquid supply. The gas chamber further includes one or more outer apertures to allow gas flow directly into liquid of the liquid supply surrounding the liquid riser. Preferably, the liquid exiting the liquid riser aids in dispersing the liquid aerated by the one or more outer apertures.

Abstract: An aerator for adding oxygen to a body of water. A pair of tubes is mounted to a plate, in turn, connected to a pair of floats suspending the aerator in the body of water. A source of pressurized air directs air flow through the tubes forcing water flow into the tubes and out vertical risers whereat the oxygenated water then falls back onto the body of water.

Abstract: An apparatus to lift liquid from a reservoir of liquid and aerate the liquid. A downwardly opening enclosure has an inlet for liquid to flow from a reservoir into the enclosure. The enclosure includes a channel for the liquid to flow upward. An inner cone within an outer cone forms a gas chamber connected to an external gas compressor. Holes in the gas chamber walls allow the gas to flow into the channel and aerate the liquid which is returned to the reservoir.

Abstract: An aerator for adding oxygen to a body of water. A pair of tubes is mounted to a plate, in turn, connected to a pair of floats suspending the aerator in the body of water. A source of pressurized air directs air flow through the tubes forcing water flow into the tubes and out vertical risers whereat the oxygenated water then falls back onto the body of water.

Abstract: An apparatus to lift liquid from a reservoir of liquid and aerate the liquid. A downwardly opening enclosure has an inlet for liquid to flow from a reservoir into the enclosure. The enclosure includes a channel for the liquid to flow upward. An inner cone within an outer cone forms a gas chamber connected to an external gas compressor. Holes in the gas chamber walls allow the gas to flow into the channel and aerate the liquid which is returned to the reservoir.

Abstract: An apparatus to remove sludge from a reservoir of liquid. A downwardly opening enclosure is positioned atop the floor of a reservoir with the enclosure having inlets for sludge and liquid to flow into the cavity. The cavity includes a channel for the sludge and liquid to flow upward in the channel which increases in size. Gas emitters on the edge portions of the enclosure assist the flow of sludge and liquid into the cavity.

Abstract: An apparatus for removing sludge from a reservoir of liquid. A downwardly opening enclosure is positioned atop the floor of a reservoir with the enclosure having inlets for sludge and liquid to flow into the cavity of the enclosure. Gas emitters on the opposite edge portions of the enclosure assist the flow of sludge and liquid into the cavity which is slanted upwardly towards an outlet having a lift pump for pulling the sludge and liquid from the enclosure. An optional additional passage leading from the cavity to a holder beneath the enclosure receives heavy sludge falling there through.

Abstract: An apparatus to remove sludge from a reservoir of liquid. A downwardly opening enclosure is positioned atop the floor of a reservoir with the enclosure having inlets for sludge and liquid to flow into the cavity. The cavity includes a channel for the sludge and liquid to flow upward in the channel which increases in size. Gas emitters on the edge portions of the enclosure assist the flow of sludge and liquid into the cavity.

Abstract: An apparatus for removing sludge from a reservoir of liquid. A downwardly opening enclosure is positioned atop the floor of a reservoir with the enclosure having inlets for sludge and liquid to flow into the cavity of the enclosure. Gas emitters on the opposite edge portions of the enclosure assist the flow of sludge and liquid into the cavity which is slanted upwardly towards an outlet having a lift pump for pulling the sludge and liquid from the enclosure. An optional additional passage leading from the cavity to a holder beneath the enclosure receives heavy sludge falling there through.

Abstract: A backer-rod installation tool for forcing a backer rod to a predetermined depth. A first rotatable wheel is rotatably mounted to a frame and is extendible into a building slot to contact a backer-rod. A pair of outer wheels are rotatably mounted on either side of the first wheel contacting the outer building surface and limiting the extension of the first wheel into the building slot. The outer wheels are adjustably mounted to the frame to adjustably control the extension of the first wheel. In an alternate embodiment, the outer wheels are replaced by a single outer wheel. In one embodiment, the wheels are mounted by means of rods having flat surfaces contacting fasteners limiting rotational movement of the rods relative to the frame of the tool.

Abstract: A tool for forcing a backer-rod to a predetermined depth. A first rotatable wheel is rotatably mounted between the arms of a handle being extendable into a building slot to contact a backer-rod. A pair of outer wheels are rotatably mounted on either side of the first wheel contacting the outer building surface and limiting the extension of the first wheel into the building slot. The outer wheels are adjustably mounted to the handle to adjustably control the extension of the first wheel. In an alternate embodiment, the outer wheels are replaced by a single outer wheel.