Patent ID: 8572913

Claim:
A core hole plug, comprising: a top compression plate having a top surface and a bottom compression plate wherein said top compression plate and said bottom compression plate are separated by a rubber expansion ring and wherein said top compression plate, bottom compression plate and rubber expansion ring have a diameter smaller than a core hole that they will be installed into; at least one beveled screw hole and receiver formed in said top compression plate wherein said at least one beveled screw hole and receiver matches a tapered angle of a bottom surface of a head of at least one flat head screw to ensure that said at least one flat head screw remains flush with the top surface of said top compression plate; a threaded nut integrated with said bottom compression plate; said at least one flat head screw screwed into said threaded nut through the beveled screw receiver wherein said at least one flat head screw connects said top compression plate and said bottom compression plate of said core hole plug and wherein said at least one flat head screw, said top compression plate and said bottom compression plate squeeze said rubber expansion ring there between and against side walls of the core hole as the at least one flat head screw is adjusted to move said top compression plate and said bottom compression plate together; a flat installation tool having a top and a bottom surface, said installation tool temporarily attached to the top surface of said top compression plate wherein said installation tool comes in contact with an existing floor surface when said core hole plug is inserted into the core hole and the top surface of said top compression plate is kept flush with the existing floor surface; and at least one thumb screw receiver for temporarily attaching said installation tool on said top compression plate of said core hole plug.