Abstract: An improved mechanism for securing a rotor is provided. The rotor may have an end portion with a first surface. The first surface may be threaded. The first surface of the end portion of the rotor may be different than the portion of the rotor not consisting of the end portion. A drive object may have a second surface formed on a face of the drive object to receive the first surface of the rotor. The second surface may be threaded to complement the first surface of the rotor. The drive object and the rotor may be removably affixed by threading the two surfaces together. In some embodiments, the threading on the two surfaces may follow the direction of rotation of the rotor. In some embodiments, the second surface may be made of a material that is softer than the first surface.

Abstract: A molded basin for use with a submersible sump, sewage or grinder pump. The molded construction of the basin permits design improvements to be incorporated into the basin including bolt down slots in a bottom flange of a bottom of the basin, a molded inner basin mounting surface for a float tree, a molded inner surface support mount to receive a bracket of a rail system used to raise and lower the pump within the basin, a disc that fits within the basin and is supported by a molded inner facing horizontal rib to create a wet/dry well and structural features present in a top surface of the basin and a cover for the basin to close said basin. Extension risers may be added to extend the height of the basin, wherein the extension risers contain many of the same structural features that are present in the basin.

Abstract: A molded basin for use with a submersible sump, sewage or grinder pump. The molded construction of the basin permits design improvements to be incorporated into the basin including bolt down slots in a bottom flange of a bottom of the basin, a molded inner basin mounting surface for a float tree, a molded inner surface support mount to receive a bracket of a rail system used to raise and lower the pump within the basin, a disc that fits within the basin and is supported by a molded inner facing horizontal rib to create a wet/dry well and structural features present in a top surface of the basin and a cover for the basin to close said basin. Extension risers may be added to extend the height of the basin, wherein the extension risers contain many of the same structural features that are present in the basin.