US2664739A - Tile covered, fireproofed structural element - Google Patents

Tile covered, fireproofed structural element Download PDF

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US2664739A
US2664739A US318A US31848A US2664739A US 2664739 A US2664739 A US 2664739A US 318 A US318 A US 318A US 31848 A US31848 A US 31848A US 2664739 A US2664739 A US 2664739A
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key
blocks
section
sections
grooves
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John P Marcy
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/943—Building elements specially adapted therefor elongated
    • E04B1/944—Building elements specially adapted therefor elongated covered with fire-proofing material

Definitions

  • This invention relates to the field of building and construction and more speoiiically to fire-l proong of steel structures and buildings, particularly the load-bearing structural steel thereof.
  • the primary object of this invention is the provision of reproong structure taking the form of pre-cast blocks disposed in end-to-end relationship along the particular member to be fireproofed and having interlocking structure for holding the blocks in place that is quickly and easily positioned for use and is eicient in its function of holding the blocks together.
  • the most important object of this invention is to provide reprooing blocks having interconnecting means either in the inherent contour of the blocks themselves or through use oi a specially formed key that will prevent separation of the blocks and the sections thereof once the same are positioned on the member to be protected.
  • Fig. 1 is a side elevational view of a vertical structural steel column showing the same reproofed using one form of my present invention, parts being broken away for clearness.
  • Fig. 2 is a cross sectional View taken on line II-II oi Fig. l.
  • Fig. 3 is a fragmentary cross sectional view taken on line Ill-III of Fig. l.
  • Fig. l is a cross sectional view taken on irregular line IV-IV of Fig. 3.
  • Fig. 5 is a cross sectional View similar to that shown in Fig. 2 showing a modied form ofkey.
  • Fig. 6 is a cross sectional View similar to that shown in Fig. 5 showing another modied form of key.
  • the reproong means about to be described contemplates the use oi pre-cast blocks made from red clay such as is commonly used in hard red brick, concrete or other stucturally suitable material capable of being formed into blocks and having iire and weather resistant characteristics.
  • the form of fireproong illustrated in the drawing is shown on a vertical H-shaped structural steel frame member l0 that is conventionally connected to a base plate i2.
  • a sectional base block l 4 has a recess i ii formed therein to clear the plate l2 and its fastening means.
  • This base block M is made from any material capable of casting or molding into the shape desired and having fire and weather resistant characteristics as well as being suiiciently durable to be structurally suitable.
  • Such material v may be red clay such as is commonly used in hard red brick, concrete or the like.
  • the blocks which circumscribe the member lil upwardly from 4base block i4 are broadly designated by the numeral It and are positioned in end-to-end relative abutting relationslnp to coinpletely cover the member lil.
  • These blocks I6 are sectional, there being a pair of sections i3 and 2t in the embodiment shown of identical character. As shown most clearly in Fig. 2, each of the sections I3 and 29 is U-shaped in cross section and formed to embrace substantially onehalf of the member lil when positioned thereon.
  • One leg of the section It has a longitudinal, internal groove 22 formed therein to receive a longitudinal rib 2t of the opposed leg of section 2).
  • the opposite leg of section It has an eX- ternal, longitudinal groove 25 to receive an exn ternal rib 28 on the opposed leg of section 2t. .lt is clear that a lap joint is thus formed between the sections i8 and Z at each of their opposed legs.
  • lap joints s@ are also formed between the blocks It by providing each section i8 and 2@ with an external groove along one edge oi' the bight thereof and an internal groove along the opposite edge of its bight.
  • each section i3 and 2l] have longitudinal grooves 32 formed therein that extend from one end of the sections to a point intermediate the ends thereof. These grooves 32 receive the legs or a lJ-shaped key Srl that is also provided with a centrally disposed projection 36 extending oppositely from the said legs of key 34.
  • the base block it is also provided with vertical grooves such as at 32 for receiving keys 3d and is formed to cooperate with sections I8 and 20 to present a lap joint 58 with the first block l.
  • the first block I6 is then slipped into place with all lap joints interlocking and with that portion of the keys 3e above block i4 received lby the respective grooves 32.
  • the next step is to insert another set of keys 34 into grooves 32 from the uppermost edge of the rst block i6. These keys Sli will rest upon the innermost ends of their respective grooves and extend outwardly therefrom for receiving the next block i6.
  • the keys Sii which are formed from the same material as blocks iii and l@ serve not only to hold sections it and 29 together but prevent any possible displacement thereof in any direction.
  • a cap di takes much the same form of the keys 34 as shown in Figs. 3 and 4 and is sectional to close the iireproong wall either at a desired point along the member le or at its end.
  • This cap 11.0 is also formed to cooperate with the block it next adjacent thereto to form a lap joint on all sides as at :i2 and completely nlls in the entire space surrounding the member i.
  • a modified forni of key 56 is shown to hold together the sections 52 and 5d of a block 56 of identical character as block it just above described.
  • This key 5t is preferably formed from asbestos cement and is substantially U-shaped in cross section.
  • the legs of this key 5b have inturned ears e@ formed thereon which are received by grooves El@ within the inner faces of the legs of U-shaped sections 52 and es.
  • rIhe two legs of key 5e rest flatly along the two inner faces of the respective side walls of H-shaped member G2 While the bight thereof is wedged tightly against the center cross bar of member 52.
  • rShe length of grooves E@ and of keys 50 and the manner of assembling is the saine as above described with respect to the modification of Figs. l to 3 inclusive.
  • a metallic key l@ of U-shaped cross section is shown placed in a block l2 in the identical manner as key 5e of Fig. 5.
  • the legs of key 70 extend directly into grooves 74 formed in block l2 to hold the sections thereof in place.
  • Fireproong structure for a preeformed, metallic, elongated H-beam, said structure cornprisng a plurality of pre-formed, fire-resistant the.
  • each block including a pair of opposed, U-shaped sections with the remote edges of opposed leg portions thereof in abutting relationship, the abutting edges of the leg portions of the sections being in shiplapped relationship; and means holding the sections against lateral displacement relative to the beam, said means comprising a pair of opposed, pre-formed keys interposed between the beam and the blocks and each directly engaging the beam and both sections of the blocks and holding the blocks against movement in one direction relative to the-beam,- each section having a pair oi grooves therein receiving portions of the keys, whereby the. keys hold the sections against separation.
  • each section is on the inner surface o one leg portion of the section
  • the other of said grooves of each section is on the inner surface of the other leg portion of the section
  • each key is provided with a U-.shaped portion presenting a pair of spaced legs on the key, the legs of each key being respectively disposed within and in engagement with a groove of each of the sections.
  • each section is on the inner surface of one leg portion of the section
  • the other of said grooves of each section is on the inner surface of the other leg portion of the section
  • each key is provided with a U-shaped portion presenting a pair of spaced legs on the key, the legs of each key being respectively disposed within and engagement with a groove of each of the sections, said U-shaped portion of each of the keys being wedged between opposed parts of said beam.
  • each key is provided with a U-shaped portion presenting a pair of spaced legs on the key, the legs or each key being revspectively disposed within and in engagement with a groove of each of the sections, and each key is provided with a projection extending from the bight of the U-shaped portion of the key in a direction oppositely to said legs thereof, projection of each key bearing against the beam, said bight of the U-shaped portion of each key bearing against the blocks.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Description

Jan. 5, 1954 J. P. MARcY TILE COVERED, FIREPROOF'ED STRUCTURAL ELEMENT Filed Jan. 2, 1948 AA w Patented Jan. v5, 1954 PATENT OFFICE TILE COVERED, FIREPROOFED STRUCTURAL ELEMENT John P. Marcy, Alhambra, Calif.
Application January 2, 1948, Serial N o. 318
(Cl. 'Z2-'73) 4 Claims.
This invention relates to the field of building and construction and more speoiiically to lire-l proong of steel structures and buildings, particularly the load-bearing structural steel thereof.
The primary object of this invention is the provision of reproong structure taking the form of pre-cast blocks disposed in end-to-end relationship along the particular member to be fireproofed and having interlocking structure for holding the blocks in place that is quickly and easily positioned for use and is eicient in its function of holding the blocks together.
The most important object of this invention is to provide reprooing blocks having interconnecting means either in the inherent contour of the blocks themselves or through use oi a specially formed key that will prevent separation of the blocks and the sections thereof once the same are positioned on the member to be protected.
Many additional objects will be made clear during the course of the following specification, reference being had to the accompanying drawing, wherein:
Fig. 1 is a side elevational view of a vertical structural steel column showing the same reproofed using one form of my present invention, parts being broken away for clearness.
Fig. 2 is a cross sectional View taken on line II-II oi Fig. l.
Fig. 3 is a fragmentary cross sectional view taken on line Ill-III of Fig. l.
Fig. l is a cross sectional view taken on irregular line IV-IV of Fig. 3.
Fig. 5 is a cross sectional View similar to that shown in Fig. 2 showing a modied form ofkey.
Fig. 6 is a cross sectional View similar to that shown in Fig. 5 showing another modied form of key.
Primarily the nreproong structure about to be described is for use on load-bearing structural steel such as used in oil renery and chemical plants, although buildings generally may Well have the framework thereof so reproofed. In oil refineries particularly, steel framework subjected to res creates an extremely hazardous condition unless adequately protected against possible re.
4Many buildings, although capable of opposing the access of fire from Without, but having combustible contents, are far from deserving the name of reproof, though they may resist a certain amount of scorching. Thus it has been the practice to separately reproof load-bearing structural steel but the methods used have been expensive. This expense has been recently enhanced by high cost of lumber and construction labor. Such reproofing by poured concrete or 2 like methods has therefore become almost prohibitive.
The reproong means about to be described contemplates the use oi pre-cast blocks made from red clay such as is commonly used in hard red brick, concrete or other stucturally suitable material capable of being formed into blocks and having iire and weather resistant characteristics.
The embodiment of my invention shown in the accompanying drawing includes the use of separate fastening means for holding the block sections and the blocks themselves together,
The form of fireproong illustrated in the drawing is shown on a vertical H-shaped structural steel frame member l0 that is conventionally connected to a base plate i2. A sectional base block l 4 has a recess i ii formed therein to clear the plate l2 and its fastening means. This base block M, as well as the sectional blocks about to be described, is made from any material capable of casting or molding into the shape desired and having fire and weather resistant characteristics as well as being suiiciently durable to be structurally suitable. Such material vmay be red clay such as is commonly used in hard red brick, concrete or the like.
The blocks which circumscribe the member lil upwardly from 4base block i4 are broadly designated by the numeral It and are positioned in end-to-end relative abutting relationslnp to coinpletely cover the member lil. These blocks I6 are sectional, there being a pair of sections i3 and 2t in the embodiment shown of identical character. As shown most clearly in Fig. 2, each of the sections I3 and 29 is U-shaped in cross section and formed to embrace substantially onehalf of the member lil when positioned thereon.
One leg of the section It has a longitudinal, internal groove 22 formed therein to receive a longitudinal rib 2t of the opposed leg of section 2). The opposite leg of section It has an eX- ternal, longitudinal groove 25 to receive an exn ternal rib 28 on the opposed leg of section 2t. .lt is clear that a lap joint is thus formed between the sections i8 and Z at each of their opposed legs.
As shown in Fig. l, lap joints s@ are also formed between the blocks It by providing each section i8 and 2@ with an external groove along one edge oi' the bight thereof and an internal groove along the opposite edge of its bight.
The internal faces of the legs of each section i3 and 2l] have longitudinal grooves 32 formed therein that extend from one end of the sections to a point intermediate the ends thereof. These grooves 32 receive the legs or a lJ-shaped key Srl that is also provided with a centrally disposed projection 36 extending oppositely from the said legs of key 34.
The base block it is also provided with vertical grooves such as at 32 for receiving keys 3d and is formed to cooperate with sections I8 and 20 to present a lap joint 58 with the first block l.
After base block Ill is positioned over plate l2 and around a portion of member i, a pair of keys 34 are inserted within the grooves of block Id. These keys 35i have a length sufficient to.
extend a distance above block Hl and are disposed in opposed relation on each side ofY member i with the projections 3c thereof wedged tightly against the center cross plate of member IG.
The first block I6 is then slipped into place with all lap joints interlocking and with that portion of the keys 3e above block i4 received lby the respective grooves 32.
The next step is to insert another set of keys 34 into grooves 32 from the uppermost edge of the rst block i6. These keys Sli will rest upon the innermost ends of their respective grooves and extend outwardly therefrom for receiving the next block i6.
It is to be noted that the keys Sii, which are formed from the same material as blocks iii and l@ serve not only to hold sections it and 29 together but prevent any possible displacement thereof in any direction. The manner in which keys Sil overlap the lap joints 3S and bring together the sections i8 and 2t at their point of interlocking adds to the durability and strength of the nreproofing structure.
A cap di) takes much the same form of the keys 34 as shown in Figs. 3 and 4 and is sectional to close the iireproong wall either at a desired point along the member le or at its end. This cap 11.0 is also formed to cooperate with the block it next adjacent thereto to form a lap joint on all sides as at :i2 and completely nlls in the entire space surrounding the member i.
In Fig. a modified forni of key 56 is shown to hold together the sections 52 and 5d of a block 56 of identical character as block it just above described. This key 5t is preferably formed from asbestos cement and is substantially U-shaped in cross section. The legs of this key 5b have inturned ears e@ formed thereon which are received by grooves El@ within the inner faces of the legs of U-shaped sections 52 and es. rIhe two legs of key 5e rest flatly along the two inner faces of the respective side walls of H-shaped member G2 While the bight thereof is wedged tightly against the center cross bar of member 52. rShe length of grooves E@ and of keys 50 and the manner of assembling is the saine as above described with respect to the modification of Figs. l to 3 inclusive.
In Fig. b' a metallic key l@ of U-shaped cross section is shown placed in a block l2 in the identical manner as key 5e of Fig. 5. In this case, however, the legs of key 70 extend directly into grooves 74 formed in block l2 to hold the sections thereof in place.
It is to be noted that the form shown in Figs. l to 6 inclusive is illustrated on a vertical column, but the blocks and keys thereof may well be used en horizontal beams.
Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is:
l. Fireproong structure for a preeformed, metallic, elongated H-beam, said structure cornprisng a plurality of pre-formed, fire-resistant the.
blocks disposed in end-to-end and abutting relationship throughout the length of and in complete circumscribing arrangement to said beam, the abutting edges of the blocks being in shiplapped relationship, each block including a pair of opposed, U-shaped sections with the remote edges of opposed leg portions thereof in abutting relationship, the abutting edges of the leg portions of the sections being in shiplapped relationship; and means holding the sections against lateral displacement relative to the beam, said means comprising a pair of opposed, pre-formed keys interposed between the beam and the blocks and each directly engaging the beam and both sections of the blocks and holding the blocks against movement in one direction relative to the-beam,- each section having a pair oi grooves therein receiving portions of the keys, whereby the. keys hold the sections against separation.
2. Fireproong structure as set forth in claim 1, wherein one of said pair of grooves of each section is on the inner surface o one leg portion of the section, the other of said grooves of each section is on the inner surface of the other leg portion of the section, and each key is provided with a U-.shaped portion presenting a pair of spaced legs on the key, the legs of each key being respectively disposed within and in engagement with a groove of each of the sections.
3. Fireproonng structure as set forth in claim l, wherein one of said pair of grooves of each section is on the inner surface of one leg portion of the section, the other of said grooves of each section is on the inner surface of the other leg portion of the section, and each key is provided with a U-shaped portion presenting a pair of spaced legs on the key, the legs of each key being respectively disposed within and engagement with a groove of each of the sections, said U-shaped portion of each of the keys being wedged between opposed parts of said beam.
4. Fireproong structure as set forth in claim l, wherein one of said pair of grooves of each section is on the inner surface of one leg portion of the section, the other of said'grooves of section is on the inner surface of the other leg portion of the section, each key is provided with a U-shaped portion presenting a pair of spaced legs on the key, the legs or each key being revspectively disposed within and in engagement with a groove of each of the sections, and each key is provided with a projection extending from the bight of the U-shaped portion of the key in a direction oppositely to said legs thereof, projection of each key bearing against the beam, said bight of the U-shaped portion of each key bearing against the blocks.
JOHN P. MARCY.
References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,136,874 Hayde Api'. 2Q, 1915 1,617,762 Kiefer Feb. l5, 1,779,721 Yeager Oct. 28, i930 2,556,878 Kohlhaas June 12, 1951 FOREIGN PATENTS Number Country Date 325,505 France of i902 25,140 Great Britain of 1912 299,903 Italy of i932 553,655 Great Britain of 1943
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590547A (en) * 1967-10-25 1971-07-06 George Molyneux Casings for joists, columns and other structural members
US20080236075A1 (en) * 2005-03-16 2008-10-02 Densit A/S Tower Foundation System And Method For Providing Such System
US7779588B1 (en) * 2009-03-24 2010-08-24 Bruning William E Concrete foundation for supporting a pole thereon
US20110030299A1 (en) * 2009-08-04 2011-02-10 Raynor Brice C Sectioned precast deck footings/ piers
WO2011135322A1 (en) * 2010-04-30 2011-11-03 David Woolstencroft Fire protection for buildings
US20130055660A1 (en) * 2011-09-02 2013-03-07 Keimyung University Academic Coorperation Foundation Structure for strengthening of building column structures
US10954670B2 (en) 2018-03-15 2021-03-23 California Expanded Metal Products Company Multi-layer fire-rated joint component
US11041306B2 (en) 2007-08-06 2021-06-22 California Expanded Metal Products Company Two-piece track system
US11060283B2 (en) 2010-04-08 2021-07-13 California Expanded Metal Products Company Fire-rated wall construction product
US11111666B2 (en) 2018-08-16 2021-09-07 California Expanded Metal Products Company Fire or sound blocking components and wall assemblies with fire or sound blocking components
US11141613B2 (en) * 2009-09-21 2021-10-12 California Expanded Metal Products Company Wall gap fire block device, system and method
US11162259B2 (en) 2018-04-30 2021-11-02 California Expanded Metal Products Company Mechanically fastened firestop flute plug
US11268274B2 (en) 2019-03-04 2022-03-08 California Expanded Metal Products Company Two-piece deflection drift angle
US11280084B2 (en) 2019-01-24 2022-03-22 California Expanded Metal Prod ucts Company Wall joint or sound block component and wall assemblies
US11421417B2 (en) 2018-03-15 2022-08-23 California Expanded Metal Products Company Fire-rated joint component and wall assembly
US11466449B2 (en) 2007-08-22 2022-10-11 California Expanded Metal Products Company Fire-rated wall and ceiling system
US11898346B2 (en) 2012-01-20 2024-02-13 Cemco, Llc Fire-rated joint system
US11920343B2 (en) 2019-12-02 2024-03-05 Cemco, Llc Fire-rated wall joint component and related assemblies

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR325505A (en) * 1902-10-21 1903-05-01 Cancalon Francois Unalterable coating for protection against humidity and fire of joists, beams or structural members
GB191225140A (en) * 1912-11-02 1913-11-03 John Richard Gwyther Improvements in and relating to the Construction of Reinforced Concrete Columns, Struts, Beams and other Concrete Structures, Applicable also for Fireproofing Structural Steel or Cast Iron Stanchions and the like.
US1136874A (en) * 1915-04-20 Stephen J Hayde Fireproof construction.
US1617762A (en) * 1923-06-30 1927-02-15 William G Kiefer Column and guard
US1779721A (en) * 1928-02-07 1930-10-28 Roy V Yeager Apparatus for fireproofing structural metal
GB553655A (en) * 1942-07-20 1943-05-31 Alfred Sam Bythway Improvements in or relating to fire resistant casings for structural steelwork
US2556878A (en) * 1944-04-11 1951-06-12 John V Kohlhaas Fireproofed flanged structural member and a precast shoe therefor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1136874A (en) * 1915-04-20 Stephen J Hayde Fireproof construction.
FR325505A (en) * 1902-10-21 1903-05-01 Cancalon Francois Unalterable coating for protection against humidity and fire of joists, beams or structural members
GB191225140A (en) * 1912-11-02 1913-11-03 John Richard Gwyther Improvements in and relating to the Construction of Reinforced Concrete Columns, Struts, Beams and other Concrete Structures, Applicable also for Fireproofing Structural Steel or Cast Iron Stanchions and the like.
US1617762A (en) * 1923-06-30 1927-02-15 William G Kiefer Column and guard
US1779721A (en) * 1928-02-07 1930-10-28 Roy V Yeager Apparatus for fireproofing structural metal
GB553655A (en) * 1942-07-20 1943-05-31 Alfred Sam Bythway Improvements in or relating to fire resistant casings for structural steelwork
US2556878A (en) * 1944-04-11 1951-06-12 John V Kohlhaas Fireproofed flanged structural member and a precast shoe therefor

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590547A (en) * 1967-10-25 1971-07-06 George Molyneux Casings for joists, columns and other structural members
US20080236075A1 (en) * 2005-03-16 2008-10-02 Densit A/S Tower Foundation System And Method For Providing Such System
US8261502B2 (en) * 2005-03-16 2012-09-11 Illinois Tool Works, Inc. Tower foundation system
US8745942B2 (en) 2005-03-16 2014-06-10 Illinois Tool Work, Inc. Tower foundation system and method for providing such system
US11041306B2 (en) 2007-08-06 2021-06-22 California Expanded Metal Products Company Two-piece track system
US11773587B2 (en) 2007-08-06 2023-10-03 Cemco, Llc Two-piece track system
US11560712B2 (en) 2007-08-06 2023-01-24 Cemco, Llc Two-piece track system
US11802404B2 (en) 2007-08-22 2023-10-31 Cemco, Llc Fire-rated wall and ceiling system
US11466449B2 (en) 2007-08-22 2022-10-11 California Expanded Metal Products Company Fire-rated wall and ceiling system
US7779588B1 (en) * 2009-03-24 2010-08-24 Bruning William E Concrete foundation for supporting a pole thereon
US8464482B2 (en) * 2009-08-04 2013-06-18 Brice C. Raynor Sectioned precast deck footings/ piers
US20110030299A1 (en) * 2009-08-04 2011-02-10 Raynor Brice C Sectioned precast deck footings/ piers
US11896859B2 (en) 2009-09-21 2024-02-13 Cemco, Llc Wall gap fire block device, system and method
US11141613B2 (en) * 2009-09-21 2021-10-12 California Expanded Metal Products Company Wall gap fire block device, system and method
US11905705B2 (en) 2010-04-08 2024-02-20 Cemco, Llc Fire-rated wall construction product
US11060283B2 (en) 2010-04-08 2021-07-13 California Expanded Metal Products Company Fire-rated wall construction product
WO2011135322A1 (en) * 2010-04-30 2011-11-03 David Woolstencroft Fire protection for buildings
US20130055660A1 (en) * 2011-09-02 2013-03-07 Keimyung University Academic Coorperation Foundation Structure for strengthening of building column structures
US11898346B2 (en) 2012-01-20 2024-02-13 Cemco, Llc Fire-rated joint system
US11421417B2 (en) 2018-03-15 2022-08-23 California Expanded Metal Products Company Fire-rated joint component and wall assembly
US11866932B2 (en) 2018-03-15 2024-01-09 Cemco, Llc Fire-rated joint component and wall assembly
US10954670B2 (en) 2018-03-15 2021-03-23 California Expanded Metal Products Company Multi-layer fire-rated joint component
US11162259B2 (en) 2018-04-30 2021-11-02 California Expanded Metal Products Company Mechanically fastened firestop flute plug
US11933042B2 (en) 2018-04-30 2024-03-19 Cemco, Llc Mechanically fastened firestop flute plug
US11873636B2 (en) 2018-08-16 2024-01-16 Cemco, Llc Fire or sound blocking components and wall assemblies with fire or sound blocking components
US11111666B2 (en) 2018-08-16 2021-09-07 California Expanded Metal Products Company Fire or sound blocking components and wall assemblies with fire or sound blocking components
US11891800B2 (en) 2019-01-24 2024-02-06 Cemco, Llc Wall joint or sound block component and wall assemblies
US11280084B2 (en) 2019-01-24 2022-03-22 California Expanded Metal Prod ucts Company Wall joint or sound block component and wall assemblies
US11268274B2 (en) 2019-03-04 2022-03-08 California Expanded Metal Products Company Two-piece deflection drift angle
US11920344B2 (en) 2019-03-04 2024-03-05 Cemco, Llc Two-piece deflection drift angle
US11920343B2 (en) 2019-12-02 2024-03-05 Cemco, Llc Fire-rated wall joint component and related assemblies

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