# US 8,782,977 B2 · Interior wall cap for use with an exterior wall of a building structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,782,977 B2 - Document ID: US8782977B2 - Status: Granted - Kind: B2 - Application number: 13/711,030 - Filed: 2012-12-11 - Published: 2013-04-25 - Granted: 2014-07-22 - Earliest claimed: 2011-01-18 - Assignees: Mull-It-Over Products - Applicants: Mull-It-Over Products - Inventors: Bruce Harold Burgess - Web page: https://patentgrep.com/patent/US8782977B2 ## CPC - E04B 2/00: Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls (connections for building structures in general E04B1/38; insulation for buildings in general E04B1/62; building elements of relatively thin form for parts of buildings E04C2/00) - E04B 1/84: Sound-absorbing elements - E04B 1/94: against fire ({fire protection of partitions E04B2/7403, E04B2/7409; supporting constructions for ceilings having the capability of expansion in case of fire E04B9/08}; fire-fighting A62C, {e.g. fire prevention or containment A62C2/00}; impregnation of wood or similar materials B27K; {fireproof paints C09D5/18; fireproofing materials C09K21/00; flame-resistant papers D21H5/0002; coverings or linings, e.g. for walls or ceilings, in general E04F13/00}; fireproof doors E06B5/16; {firebreak devices for pipes or the like passing through walls F16L5/04; protection of pipes by means of non-inflammable material F16L57/04}) - E04B 2/7409: {special measures for sound or thermal insulation, including fire protection} - E04B 2/82: characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions {as far as related to the connection with other parts of the building} - E04B 2/88: Curtain walls {(fixing of glass panes E06B3/54)} - 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 A wall cap for an interior wall of a building structure, the building structure comprising at least one exterior wall and at least one interior wall and a gap formed between the at least one interior wall and the at least one exterior wall. The wall cap comprises at least one material for abating an undesirable physical property of the gap. ## Claims ### Claim 1 A wall cap for an interior partition wall of a building structure, the building structure comprising at least one room having a first side defined at least partially by at least one exterior wall and a second side defined at least partially by at least one interior partition wall, and a gap formed between the at least one interior partition wall and the at least one exterior wall, the wall cap comprising: at least one elongated member having a first end configured for attachment to the at least one interior partition wall and a second distal end in juxtaposition with the at least one exterior wall and being spaced from the at least one exterior wall, and having an outer surface extending substantially across the gap, an underside of the elongated member defining a chamber with at least a portion of the interior partition wall; and at least one material disposed within the chamber having at least one characteristic which abates at least one undesirable physical property of the gap; wherein, when the at least one elongated member is mounted in cantilever fashion to a portion of the interior partition wall, such that the elongated member is allowed to move relative to the exterior wall, and substantially fills the gap between the interior partition wall and the corresponding exterior wall, the at least one material abates the at least one undesirable physical property of the gap. ### Claim 2 (depends on 1) The wall cap of claim 1 wherein the at least one material comprises at least one width of fire-rated material configured to abate the transmission of at least one of flame, heat or hot gases across the gap. ### Claim 3 (depends on 2) The wall cap of claim 2 wherein the at least one width of fire-rated material has a fire rating of at least 1 hour. ### Claim 4 (depends on 2) The wall cap of claim 2 wherein the at least one width of fire-rated material comprises a material that increases in volume when exposed to temperatures of about 300° F. and above. ### Claim 5 (depends on 1) The wall cap of claim 1 wherein the at least one material comprises at least one width of sound-damping material configured to abate at least one of transmission or amplification of vibration across the gap. ### Claim 6 (depends on 5) The wall cap of claim 5 wherein the sound-damping material comprises at least one of an open cell foam, a melamine-based foam, mass loaded vinyl, intumescent foam or combinations thereof. ### Claim 7 (depends on 1) The wall cap of claim 1 wherein the at least one material is adhesively secured to the underside of the elongated member, and the elongated member is mounted to the at least one interior partition wall by at least one fastener. ### Claim 8 (depends on 1) The wall cap of claim 1 wherein the at least one material comprises at least one first width of fire-rated material configured to abate the transmission of at least one of flame, heat or hot gases across the gap and at least one second width of sound-damping material configured to abate at least one of transmission or amplification of vibration across the gap. ### Claim 9 (depends on 8) The wall cap of claim 8 wherein the at least one first width of fire-rated material further comprises a backing plate having an offset flange mounted to the at least one interior partition wall. ### Claim 10 (depends on 9) The wall cap of claim 9 wherein the backing plate comprises a continuous web of material extending generally along a longitudinal length of the elongated member and receiving the first width of fire-rated material. ### Claim 11 (depends on 9) The wall cap of claim 9 wherein the backing plate comprises a plurality of brackets which retain the first width of fire-rated material to the at least one interior partition wall. ### Claim 12 (depends on 9) The wall cap of claim 9 wherein the second width of sound-damping material is mounted to the underside of the elongated member. ### Claim 13 (depends on 12) The wall cap of claim 12 wherein, when the elongated member is mounted to the at least one interior partition wall, the elongated member covers the at least one first width of fire-rated material, whereby the wall cap then provides both fire and vibration abating characteristics to the gap. ### Claim 14 (depends on 1) The wall cap of claim 1 wherein the second distal end of the elongated member comprises a distal outer surface in juxtaposition with the at least one exterior wall, and being spaced a distance from the at least one exterior wall, and further comprising at least one gasket disposed within the spaced distance between the distal outer surface of the elongated member and the at least one exterior wall, whereby the at least one gasket provides a seal between the elongated member and the at least one exterior wall. ### Claim 15 (depends on 1) The wall cap of claim 1 wherein the at least one characteristic of the at least one material abates a fire transmission property of the gap. ### Claim 16 (depends on 1) The wall cap of claim 1 wherein the at least one characteristic of the at least one material abates at least one of a vibration transmission or vibration amplification property of the gap. ### Claim 17 A wall cap for an interior partition wall of a building structure, the building structure comprising at least one exterior wall having at least a portion formed from glass and at least one interior partition wall, and a gap formed between an end of the at least one interior partition wall and the glass portion of the exterior wall, the wall cap comprising: at least one elongated member having a first end configured for attachment to the at least one interior partition wall and a second distal end in juxtaposition with the glass portion of the exterior wall and being spaced a distance from the glass portion of the exterior wall, and having an outer surface extending substantially across the gap, an underside of the elongated member defining a chamber with at least a portion of the interior partition wall; and wherein, the at least one elongated member is mounted in cantilever fashion to a portion of the interior partition wall, such that the elongated member is allowed to move relative to the glass portion of the exterior wall, and substantially fills the gap between the end of the interior partition wall and the corresponding glass portion of the exterior wall. ### Claim 18 (depends on 17) The wall cap of claim 17 and further including at least one material disposed within the chamber having at least one characteristic which abates at least one undesirable physical property of the gap. ### Claim 19 (depends on 18) The wall cap of claim 18 wherein the at least one material comprises at least one width of fire-rated material configured to abate the transmission of at least one of flame, heat or hot gases across the gap. ### Claim 20 (depends on 18) The wall cap of claim 18 wherein the at least one material comprises at least one width of sound-damping material configured to abate at least one of transmission or amplification of vibration across the gap. ### Claim 21 (depends on 18) The wall cap of claim 18 wherein the at least one material comprises at least one first width of fire-rated material configured to abate the transmission of at least one of flame, heat or hot gases across the gap and at least one second width of sound-damping material configured to abate at least one of transmission or amplification of vibration across the gap. ### Claim 22 (depends on 17) The wall cap of claim 17 wherein the second distal end of the elongated member comprises a distal outer surface in juxtaposition with the glass portion of the exterior wall, and being spaced a distance from the glass portion of the exterior wall, and further comprising at least one gasket disposed within the spaced distance between the distal outer surface of the elongated member and the glass portion of the exterior wall, whereby the at least one gasket provides a seal between the elongated member and the glass portion of the exterior wall. ### Claim 23 A wall cap for an interior partition wall of a building structure, the building structure comprising at least one room defined by at least one exterior wall separating the room from an exterior of the building structure and at least one interior partition wall, and a gap formed between the at least one interior partition wall and the at least one exterior wall, the wall cap comprising: at least one elongated member having a first end configured for attachment to the at least one interior partition wall and a second distal end in juxtaposition with the at least one exterior wall and being spaced from the at least one exterior wall, and having an outer surface extending substantially across the gap, an underside of the elongated member defining a chamber with at least a portion of the interior partition wall; and at least one material disposed within the chamber having at least one characteristic which abates at least one undesirable physical property of the gap; wherein, when the at least one elongated member is mounted in cantilever fashion to a portion of the interior partition wall, such that the elongated member is allowed to move relative to the exterior wall, and substantially fills the gap between the interior partition wall and the corresponding exterior wall, the at least one material abates the at least one undesirable physical property of the gap. ### Claim 24 (depends on 23) The wall cap of claim 23 wherein the at least one material comprises at least one width of fire-rated material configured to abate the transmission of at least one of flame, heat or hot gases across the gap. ### Claim 25 (depends on 24) The wall cap of claim 24 wherein the at least one width of fire-rated material has a fire rating of at least 1 hour. ### Claim 26 (depends on 24) The wall cap of claim 24 wherein the at least one width of fire-rated material comprises a material that increases in volume when exposed to temperatures of about 300° F. and above. ### Claim 27 (depends on 23) The wall cap of claim 23 wherein the at least one material comprises at least one width of sound-damping material configured to abate at least one of transmission or amplification of vibration across the gap. ### Claim 28 (depends on 27) The wall cap of claim 27 wherein the sound-damping material comprises at least one of an open cell foam, a melamine-based foam, mass loaded vinyl, intumescent foam or combinations thereof. ### Claim 29 (depends on 23) The wall cap of claim 23 wherein the at least one material is adhesively secured to the underside of the elongated member, and the elongated member is mounted to the at least one interior partition wall by at least one fastener. ### Claim 30 (depends on 23) The wall cap of claim 23 wherein the at least one material comprises at least one first width of fire-rated material configured to abate the transmission of at least one of flame, heat or hot gases across the gap and at least one second width of sound-damping material configured to abate at least one of transmission or amplification of vibration across the gap. ### Claim 31 (depends on 30) The wall cap of claim 30 wherein the at least one first width of fire-rated material further comprises a backing plate having an offset flange mounted to the at least one interior partition wall. ### Claim 32 (depends on 31) The wall cap of claim 31 wherein the backing plate comprises a continuous web of material extending generally along a longitudinal length of the elongated member and receiving the first width of fire-rated material. ### Claim 33 (depends on 31) The wall cap of claim 31 wherein the backing plate comprises a plurality of brackets which retain the first width of fire-rated material to the at least one interior partition wall. ### Claim 34 (depends on 31) The wall cap of claim 31 wherein the second width of sound-damping material is mounted to the underside of the elongated member. ### Claim 35 (depends on 34) The wall cap of claim 34 wherein, when the elongated member is mounted to the at least one interior partition wall, the elongated member covers the at least one first width of fire-rated material, whereby the wall cap then provides both fire and vibration abating characteristics to the gap. ### Claim 36 (depends on 23) The wall cap of claim 23 wherein the second distal end of the elongated member comprises a distal outer surface in juxtaposition with the at least one exterior wall, and being spaced a distance from the at least one exterior wall, and further comprising at least one gasket disposed within the spaced distance between the distal outer surface of the elongated member and the at least one exterior wall, whereby the at least one gasket provides a seal between the elongated member and the at least one exterior wall. ### Claim 37 (depends on 23) The wall cap of claim 23 wherein the at least one characteristic of the at least one material abates a fire transmission property of the gap. ### Claim 38 (depends on 23) The wall cap of claim 23 wherein the at least one characteristic of the at least one material abates at least one of a vibration transmission or vibration amplification property of the gap.