Patent ID: 7641805

Claim:
A grease trap for separating solids that are heavier than water and F.O.G. waste from waste water comprising: a container having a bottom and an inlet to receive waste water substantially above the bottom and an outlet substantially above the bottom, so that solids in the waste water that are heavier than water have residence time in the container long enough to gravitationally separate towards the bottom as waste water at least partially depleted of solids that are heavier than water discharge from the container through the outlet; a tank having a downwardly sloped bottom; an inlet invert in the tank connected to the outlet of the container for receiving incoming waste water at least partially depleted of solids into the tank; an upwardly sloped divider dividing the tank into an upper chamber and a lower chamber, with a hole near or at an upper part of the divider, for allowing waste into the upper chamber; an outlet invert for removing water from the tank; a lid covering the tank; and a pipe extending towards the lower chamber for enabling sucking of solid waste out of the lower chamber.