Sewer expansion plug

Abstract

A sewer expansion plug for connecting a sewer house to a cleanout pipe that expands a grip ring by rotating a handle. The grip ring includes multiple diameters to accommodate various size blackwater cleanout pipes. The handle connects to a wedge plate, which converts rotational force from the handle into linear movement that expands the grip ring by lowering the wedge plate and pressing slides outward. As the wedge plate moves, it expands a grip ring around the pipe to interface with an interior circumference of the blackwater cleanout pipe. The wedge plate is connected to a base attached to the grip ring to secure the grip ring in place, allowing the pipe to be inserted into the blackwater disposal system.