Patent ID: 8893321

Claim:
A drain system comprising: a basin having a hole, and a drain having a rim for mating with a portion of the basin proximate the hole of the basin, at least one of the basin portion and the drain rim comprising at least two protrusions, one end of each of the protrusions being fixed directly to a surface of one of the basin portion and drain rim facing the other of the basin portion and drain rim, the protrusions being substantially inflexible with respect to the respective facing surface to which the protrusions are directly fixed; at least one of the basin portion and the drain rim forming at least two recesses configured for receiving the protrusions; and a basket lock nut for rotationally securing the drain with the basin, the recesses and protrusions preventing rotation of the drain when rotational force is applied to the basket lock nut about a threaded portion of the drain to secure the drain with the basin.