# US 2016/0258174 A1 · Method and apparatus to fill & fire proof holes in concrete floors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0258174 A1 - Document ID: US20160258174A1 - Status: Published application - Kind: A1 - Application number: 15/153,669 - Filed: 2016-05-12 - Published: 2016-09-08 - Earliest claimed: 2012-05-22 - Inventors: Gerald R. Gray; Robert W. Johnson - Web page: https://patentgrep.com/patent/US20160258174A1 ## CPC - E04G 23/0288: {Repairing or restoring floor slabs (floors E04B5/00)} - B28B 1/14: by simple casting, the material being neither forcibly fed nor positively compacted (for molten material B28B1/54) - B28B 11/0863: {for profiling, e.g. making grooves} - B28B 23/0062: {forcing the elements into the cast material, e.g. hooks into cast concrete} - E04B 1/947: {by closing openings in walls or the like in the case of fire (fire-proof doors E06B5/16)} - E04G 23/0203: {Arrangements for filling cracks or cavities in building constructions} - E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS - B28B: SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) ## Abstract The present apparatus and method relates in general to sealing a hole in a floor with a precast plug. A precast plug is created by pouring a wet aggregate mix into a form mold and thereafter inserting a pre formed rod into the uncured mixture, positioning it such that the center of the rod rests in the center of the form mold and the ends of the rod extend outward near the top of the form mold. The mix is then cured. The precast plug may then be transported to the hole that it is destined to fix. Grooves may be carved on either side of the hole to accommodate the rod's ends. The interior of the hole and the exterior of the plug may then be covered with a sealant, after which the plug may be inserted into the hole. Once the sealant cures, the hole is fully repaired. ## Claims ### Claim 1 An apparatus for sealing a hole, comprising: a concrete housing configured to substantially seal a hole in the floor of a building; a rod situated within the concrete housing, the rod including a first and second portions protruding from the concrete housing, wherein the first and second portions are configured to register with one or more grooves on the surface of the floor and adjacent to the hole; and a support component coupled to the rod, the support component embedded within the concrete housing. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the support component is coupled to a bent middle portion of the rod. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the support component is coupled substantially perpendicular to the rod. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the support component includes a top portion configured to wrap around a bent middle portion of the rod. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the support component includes an elongated body with a top portion wrapped around the rod situated within the concrete housing. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the support component is a second rod with a smaller diameter than the rod, the second rod forming a plurality of curves situated and aligned along a single plane. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the concrete housing includes a top planar surface, an outer wall, and a bottom planar surface that are integral to and unitarily form the concrete housing. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein, the top planar surface of the concrete housing is parallel to the bottom planar surface of the concrete housing. ### Claim 9 (depends on 7) The apparatus of claim 7, further comprising a sealant between the outer wall of the concrete housing and the interior surface of the hole. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein the first and second portions of the rod situated external to the concrete housing are substantially flush with the top planar surface of the concrete housing and the surface of the floor. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the height of the concrete housing is the minimum height of the hole. ### Claim 12 (depends on 7) The apparatus of claim 7, wherein the concrete housing is cylindrically shaped and tapers inward. ### Claim 13 (depends on 1) The apparatus of claim 1, further comprising a batch control number embossed on the concrete housing. ### Claim 14 (depends on 1) The apparatus of claim 1, further comprising a batch control number stamped on the concrete housing. ### Claim 15 (depends on 1) The apparatus of claim 1, further comprising a date of manufacture embossed on the concrete housing. ### Claim 16 An apparatus for sealing a hole, comprising: a concrete housing configured to substantially seal a hole in the floor of a building; a first rod situated partially within the concrete housing, the rod including a first and second portion protruding from the concrete housing, wherein the first and second portions are configured to register with one or more grooves on the surface of the floor and adjacent to the hole; and a second rod situated partially within the concrete housing and above a middle bent portion of the first rod, the second rod including a distal end and a proximal end protruding from the concrete housing, wherein the distal and a proximal ends are configured to register with the one or more grooves on the surface of the floor and adjacent to the hole. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the concrete housing includes a top planar surface, an outer wall, and a bottom planar surface that are integral to and unitarily form the concrete housing. ### Claim 18 (depends on 16) The apparatus of claim 16, wherein the first and second portions of the first rod, and the distal end and proximal end of the second rod, are substantially flush with the top planar surface of the concrete housing and the surface of the floor whenever the apparatus is inserted into the hole. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the second rod and first rod form a right angle along a horizontal plane parallel to a top planar surface of the concrete housing. ### Claim 20 (depends on 16) The apparatus of claim 16, wherein the second rod and first rod form an acute angle along a horizontal plane parallel to a top planar surface of the concrete housing.