Patent ID: 9009876
Filing Date: 2015-04-21
Classification: E03F

Abstract:
1. A drain cover with a locking mechanism, comprising: a cylindrical body having a first end, a second end, an end wall at the first end and a peripheral sidewall that extends between the first end and the second end, the peripheral sidewall having an exterior surface and an interior surface which defines an interior bore; at least one rotatable fastener extending from the end wall to the second end; a cam member carried by and extending radially from each rotatable fastener such that the cam member rotates with the rotatable fastener, the cam member being movable from a release position to a locking position upon rotation of the at least one rotatable fastener such that in the release position the cam member is retracted from an interior wall of a pipe into which drain cover is inserted and in the locking position the cam member is rotated to extend outward relative to the release position such that the cam member engages the interior wall of the pipe, the cam member comprising a surface engaging portion for engaging the interior surface of a pipe wall in the locking position, the surface engaging portion being defined by an engagement surface that spirals outward as it extends around the rotatable fastener perpendicularly to an axis of rotation of the rotating fastener such that the engagement surface moves toward the interior wall of the pipe as the cam member rotates from the release position to the locking position.