Simplified drain plug with overflow release

An overflow drain assembly, comprising:

• a housing configured to be installed at a bottom of a basin, the housing having a top portion opposite a bottom portion, wherein a top side water inlet is disposed at the top portion of the housing and is configured to be exposed to contents of the basin and a bottom side water outlet is disposed at the bottom portion of the housing and is configured to be connectable to a drainage leading away from the basin;
• a plug assembly configured to be disposed within the housing, the plug assembly comprising:
• an upper plug body;
• a lower plug body, wherein the upper plug body is translatable with respect to the lower plug body and wherein the upper plug body is not rotatable with respect to the lower plug body, wherein a guide channel is disposed in either the upper or lower plug body and a slide is disposed in the other of the upper or lower plug body, wherein the slide is configured to translate within the guide channel and prevent rotation between the upper and lower plug body;
• a fluidic seal attached to the upper plug body and configured to removably engage in a water tight manner with the top side water inlet of the housing;
• a compression spring disposed between the upper plug body and the lower plug body, wherein the compression spring biases the upper plug body to translate away from the lower plug body, and wherein the compression spring is the only spring in the overflow drain assembly;
• a first permanent magnet attached to the lower plug body;
• a second permanent magnet attached to the upper plug body;
• wherein the first permanent magnet is magnetically attracted to the second permanent magnet;
• wherein the first magnet is disposed at least partially above the second magnet;
• wherein the upper plug body comprises a variable position stepped track configured for a toothed plate to engage therein, the toothed plate disposed between the compression spring and the variable position stepped track, and further including a cam surface attached to the upper plug body, wherein the cam surface is configured to abut the toothed plate disengaging the toothed plate from the variable position stepped track thereby allowing the toothed plate to advance to a different position along the stepped track, and wherein the toothed plate is rotatable and translatable with respect to the upper and lower plug body;
• and
• wherein the upper plug body is configured to be manually pushed downward a first time by a user to automatically lock into an open position where the fluidic seal remains below the top side water inlet and wherein the upper plug body is configured to be manually pushed downward a second time by the user to automatically raise and lock into a closed position where the fluidic seal engages with the top side water inlet in the water tight manner;
• and
• a threaded shaft disposed below the lower plug body, wherein the threaded shaft is threadably engaged with the bottom portion of the housing.