AU1868002A - Ceiling grid system - Google Patents
Ceiling grid system Download PDFInfo
- Publication number
- AU1868002A AU1868002A AU18680/02A AU1868002A AU1868002A AU 1868002 A AU1868002 A AU 1868002A AU 18680/02 A AU18680/02 A AU 18680/02A AU 1868002 A AU1868002 A AU 1868002A AU 1868002 A AU1868002 A AU 1868002A
- Authority
- AU
- Australia
- Prior art keywords
- clip
- leg
- grid
- ceiling
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 229910000831 Steel Inorganic materials 0.000 description 4
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- 238000000034 method Methods 0.000 description 4
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- 239000000463 material Substances 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 239000008397 galvanized steel Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
- E04B9/065—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
- E04B9/064—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising extruded supporting beams
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/22—Connection of slabs, panels, sheets or the like to the supporting construction
- E04B9/24—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto
- E04B9/26—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto by means of snap action of elastically deformable elements held against the underside of the supporting construction
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Connection Of Plates (AREA)
- Building Environments (AREA)
- Joining Of Building Structures In Genera (AREA)
- Radiation-Therapy Devices (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Railway Tracks (AREA)
- Residential Or Office Buildings (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Passenger Equipment (AREA)
Abstract
Disclosed is a ceiling system comprising a grid formed from a plurality of parallel-extending main runners (10) having a plurality of cross runners extending between the main runners. A plurality of compression struts (12) are attached to the grid and a clip (2) is secured to the main runner (10) and the compression strut (12) to provide up-lift capacity. <IMAGE>
Description
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AUSTRALIA
Patents Act 1990 Armstrong World Industries, Inc.
COMPLETE SPECIFICATION STANDARD PATENT Invention itle: Ceilingfgrid system The following statement is a full description of this invention including the best method of performing it known to us:- CEILING GRID SYSTEM CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of United States Provisional Application Serial No. 60/271,660, filed February 26, 2001, which is incorporated herein in its entirety by reference.
o FIELD OF THE INVENTION The present invention generally relates to a ceiling grid system and more .'".specifically to a system comprising a bracing attachment clip to aid in providing *f resistance to a wind up-lift force.
BACKGROUND
Ceilings typically can be comprised of a system of panels or formed from drywall sheeting. Preferably, ceilings exposed to the elements are designed to withstand various environmental conditions. The two most common environmental conditions are rain and 6 wind. Ceilings comprised of drywall or formed from panels having a moisture sensitive binder such as starch are the most sensitive to rain while ceilings formed from corrosive resistant metal panels are the least sensitive to moisture.
However, the opposite is true for wind resistance. Ceilings formed from sheets of drywall have considerable bridging and resistance strength as compared to ceilings a2o formed from panels. Once a drywall sheet has been screwed into a ceiling grid, the drywall sheet stabilizes the whole system and helps distribute the load. in a ceiling comprised of metal panels there is no such bridging and resistance strength.
Thus, metal panels are especially vulnerable to uplifting forces caused by strong winds such as in the case of hurricanes. Panels can break free of the supporting grid system and become flying projectiles capable of causing injury to persons or property. In response to such dangers many communities require that exterior ceiling applications meet an up-lift capability of Class .The support grid of a paneled ceiling can be strengthened to help meet up-lift restrictions and to prevent panels from becoming projectiles in a wind storm. One t method used to strengthen the support grid includes the use of compression posts attached to both the building structure and the ceiling grid. The compression posts -are notched to :come down around the bulb of the grid and are typically nailed to the truss system of the off. roof. Unfortunately, the precision cut required to form a notch that can fit around the bulb part of the grid is very difficult to make and requires extreme care since there is very little tolerance in the cut.
While the use of compressiona posts is an effective mechanism for preventing uplift, the current method of installation is both expensive and time consuming. Thus, what is needed is a compression post method of attachment that is both quick and inexpensive.
2
SUMMARY
The present invention includes a ceiling system capable of meeting a wind up-lift capability of at least Class 90 or greater. Additionally, further embodiments are provided meeting wind up-lift requirements of at least Class 60 or greater and at least Class 30 or greater. The ceiling system includes a grid formed from a plurality of parallel-extending main runners having a plurality of cross runners extending between the main runners.
The grid can be suspended from and attached to a ceiling using a plurality of compression struts perpendicular to the ceiling. A bracing attachment clip is attached to a runner and a compression strut. The clip essentially comprises a first and second leg and a mido portion. The first leg secures the clip to a runner and the second leg secures the clip to an adjoining compression strut. The mid-portion of the clip conforms to the bulb portion of the runner. The attached clip is designed to prevent the grid main runners from rotating away from the compression posts. The clip provides positive engagement of the main runner bulb and the compression post.
Is The system aids in the prevention of grid main runner rotation and vertical lift which takes place when the system is subjected to strong wind forces. The clip can be positioned about every 2 feet on the main beam to meet a 90 classification. The spacing may be an even fraction of about 12 feet since most runners are 12 feet in length. The clip may be positioned across the runner splice to strengthen the splice against twisting.
a0 A further embodiment includes a support member for a ceiling grid having a main runner having a bulb portion. Typically, the main runner has the form of an inverted 3 S 00 S *SS A clip having a mid-portion disposed between two legs is attached to the main runner by one of the legs. Additionally, the mid-portion is substantially shaped to conform to the bulb of the main runner.
An additional embodiment includes a clip for attaching a main runner to a compression strut. The clip includes at least two ends which connect a compression strut and a main runner. The clip also has a mid-section that fits partially around the bulb portion of the main runner.
.DESCRIPTION OF THE DRAWINGS S o In the drawings: ~Figure la is a schematic view of the clip attached to the main beam; Figure lb is a schematic view of the back of the clip attached to the main beam and compression strut; e**s.
Figure Ic is a schematic view of the clip attached to the main beam and the 5 compression strut attached to a truss; Figure 2 illustrates various views of the clip; and Figure 3 illustrates the grid structure, clip and strut.
4 .4 0 00 0 .0 *0 00 0.* DETAILED DES CRPTION The present invention provides for a ceilinig system comprising a grid formed from a plurality of parallel-exteldinfg main runners having a plurality of cross runners extending between the main runners, A plurality of compression struts are attached to the grid and a clip is secured to the main runner and the compression strut.
The clip aids in providing a wind up-lift capability up to Class 90 for the ceiling *6 system. The clip may be made of most any material that is resilient enough to provide the stability required for the desired up-lift capability. The clip may be comprised of a metallic composition and typically steel. The clip is fastened to the compression post and C) main runner typically by screws. Of course other fastening means may also be used such as rivets.
S.The clip 2 can be placed across a runner splice When the clip 2 is placed across ~the splice the clip 2 provides adided strength. One configurationl of the clip 2 includes half of the clip leg attached to one runner and the other half attached to a second runner.
**The clips may also be placed at vari ous desired intervals depending upon the up-lift strength desired and the strength or gauge of runners. For example, the clip 2 can be positioned about every 2 feet on the main beam to meet a 90 classification. The spacing may be an even fraction of about 12 feet, since most runniers are 12 feet in length. Of course, lower classifications, such as 60, can be met with wider spacings.
In greater detail, the clip 2 may be made of 18 gauge hot dipped galvanized steel with a zinc coating level of G60. The clip 2 can be formed from stamped steel blank and drilled to add pilot holes. The pilot holes maintain the screw placement accuracy and the integrity of attachment to the grid. The clip 2 physically wraps around the bulb 14 of the grid and after securing the clip to the main runner with screws, becomes an integral part of the grid system.
The panels are typically installed as downward access panels. The panels may also be installed as upward access, but for ease of use and clearance, the downward access panels are typically employed. The panels may be comprised of most any material 10 suitable for the environment in which the ceiling is to be installed. An example panel is typically comprised of metal or alloy. Such panels provide both strength and durability.
The panels may also have an edge configuration to prevent the panel from being dislodged by an up-lift draft. In greater detail, the panels are attached to the grid such S\ that they are held in place and are not easily dislodged from the facing side of the ceiling Is or upward side. The panels are downwardly accessible, wherein the panels may be removed from the grid on the plellum side or the backing side of the panel. Examples of locking mechanisms that may be used to secure the panels in place are further illustrated in U.S. Patent Nos. 5,417,025 and 5,355,646, all of which are incorporated herein in their entirety by reference.
,o0 Turning to the figures, in Figures 1 a-c the clip 2 is illustrated attached to the main beam 10 by two sets of self drill screws. It is to be understood that the clip may be 6 attached to the main beam 10 and compression strut 12 by any means, such as rivets, adhesives, bolts, or other mechanical or chemical fastening devices. The mid-section 8 of the clip 2 fits over the bulb 14 portion of the main beam 10 to hold the main beam securely in place against the compression strut 12.
Figure 2 illustrates an embodiment of the clip 2. The clip 2 has a first end 6 and a second end 4. The ends may have at least one hole for fastening the clip 2 to both the main beam and the compression strut via the respective ends. The mid-section 8 has a ridge or indentation that approximates the bulb portion 14 of the main beamr 10. Thus, the bulb portion 14 of the main beam 10 may fit within the mid-section 8 of the clip.
Figure 3 illustrates an embodiment of the ceiling system comprising the clip 2, main beam 10, compression strut 12 and the cross beams forming a grid wherein a panel, not illustrated, may rest within the grid opening.
!The following example is intended to illustrate the invention and it is thought variations will occur to those slled in the art. Accordingly, it is intended that the scope of the invention should be limited only by the appended claims.
Described below are the test procedures and the results for an up-lift resistant ceiling assembly according to the present invention- .1 O A test specimen was prepared measuring 10O-foot square, and was tested in accordance with Underwriters Laboratories, Inc. UJL 580 Standard for Safety, Tests for 7 Uplift Resistance ofRoofAssemblies. This test simulates the effects of wind gusts by use of oscillating exterior pressure and constant interior pressures. The UL 580 standard provides a rating system to evaluate the comparative wind resistance of roof assemblies.
Chart 1 illustrates the UL 580 load table test pressures.
The ceiling system was installed into the 10-foot square opening created by the test frame and nominal 4" by 4" diameter lumber. Ceiling tile system fasteners included wafer-head streaker screws secured to the perimeter angle and studs, Hex-head selfdrilling #8 x long secure the stud hanger to main runners and cross t's.
*0 The peripheral support test apparatus frame was fabricated from C15 by 33.9 steel o channels having a dimension of 10'O" wide by 10'0" long by 1'3" deep- Two chambers were welded together forming a 30" deep chamber to provide simulated roof trusses.
Nominal 4" x 4" wood members were installed to the base of the steel channel frame.
*Q The test results essentially indicated no visible damage for all the classes tested.
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CHART #1 UL 580 Load Table Test Pressures Negative Pressure Positive Pressure Time Pounds Per Pounds Per Duration, Square Foot Inches (mm) Square Foot Inches (mm) Test Phase minutes psf (kPA) of Water psf (kPa) of Water Class 30 (not an obtainable Dade County ratingc) 1 5 16.2 (0.79) 3.1 (79) 0.0 (0.00) 0.0 (0) 2 5 }16.2 (0.79) 3.1 (79) 13.8 (0.66) 2.7 (69) 3 60 8.1-27.7 1.5-5.3 13.8(0.66) T7 2.(69) (38-135) 4 524.2(1.16) 4.7(119) 0,0( 0.00) 0.0(0) 5 5 24.2(1.16) 4.7(119) ]20.8(1.00) 4.0(102) Class 60 (not an obtainable Dade County rating) 1 5 32.3 (1.55) 6.2 (157) 0.0 (0.00) j 0.0 (0) 2 5 32.3 (1.55 6.2 (157) 27.7 (1.33) 5.3 (135) 3 60 f16.2-55-4 3.1-10.7 27.7 (1.33) 5.3 (135) (79-272) 4 5 40.4 (1.94) 7.8 (198) 0.0 (0.00) 0.0 (0) 5 5 40.4 (1.94) 7.8 (98) 34.6 (1.66) 6.7 (170) Class 90 (maximum combined up-lift pressure of 105 psf) 1 5 48.5 (2.33) 19.3 (236) 0.0 (0.00) 0.0 (0) 2 5 48.5 (2.33 9.3 (236) 41.5 1 8.0 (203) 3 60 24.2-48.5 4.7-9.3 41.5 (1.99) 8.0 (203) (1.16-2.33) (119-236)1 4 5 56.5 (2.71) 10.9 (277) 0.0 (0.00) 0.0 (0) 556.5 (2.71)1_ 10.9 (277) 48.5 (233) 9.3 (236) It will-be understood by those skilled in the art that while the present invention has been disclosed above with reference to preferred embodiments, various modifications, changes and additions can be made to the foregoing, invention, without departing from the spirit and scope thereof.
9
Claims (17)
1. A ceiling system comprising: a grid formed from a plurality of parallel-extending main runners having a plurality of cross runners extending between the main runners; a plurality of compression struts attached to the grid; a plurality of panels resting within the grid; and a clip having a first leg and second leg, the first leg secured to the main runner and the second leg secured to the compression strut.
2. The ceiling system of claim 1, wherein the clip further comprises a mid- portion disposed between the first and second leg.
3. The ceiling system of claim 2, wherein the main runner further comprises IS a bulb portion.
4. The ceiling system of claim 3, wherein the mid-portion of the clip conforms to the bulb portion of the runner. 9* The ceiling system of claim 1, wherein the system is capable of meeting an up-lift classification
6. The ceiling system of claim 1, wherein the compression strut is attached to the main runner by the clip at an interval of about every 2 feet. 3* 3 3. 3 3 *.Bl.C 3*3* 3* 3
7. The ceiling system of claim 1, wherein the compression strut is attached to the main runner by the clip at an interval of at least about every 12 feet.
8. The ceiling system of claim 1, wherein the panels are downwardly accessible.
9. A support member for a ceiling grid comprising: a main runner having a bulb portion; and a clip comprising a first leg and a second leg and a mid-portion disposed between the first leg and second leg, wherein the first leg is secured to the main runner and the mid-portion is substantially shaped to conform to the bulb of the main runner. The support member for a ceiling grid of claim 9, wherein the clip is attached to the main runner at intervals of at least 12 feet. ooo 0 a 0 0 o o go 333 3 3.* 3.* 3 3 3.* 3.* 3 33 333 3 3 33 3 333 3. 3 *ol
11. The support member for a ceiling grid of claim 9, wherein the clip is attached to the main runner at intervals Of at least 2 feet.
12. The support member for a ceiling grid of claim 9, further comprising a compression strut attached to the second leg-a of the clip. 6 g .E as. 1
13. The support member for a ceiling grid of claim 12, wherein the grid is formed from a plurality of the main rnners having a plurality of cross runners extending between the main runners.
14. The. support member of claim 13, further including a plurality of panels resting within the grid. accesible. The support member of claim 15, wherein the panels are downwardly
16. The support member of claim 9, wherein the support member supports a ceiling system capable of meeting an up-lift classification of at least 12 00 0* .0 as 00. .0 0 09* o a o 0. a a G.o* 0 0a6*0a a.a a
17. A clip for attaching a main runner having a bulb portion to a compression strut of a ceiling support grid, wherein the clip compising: a first leg and a second leg-, and a mid-portion disposed between the fist leg and second leg, wherein the Mid- portion is substantially shaped to conform to the bulb of the main runner.
18. The clip of claim 17, wherein the first leg having at least one fastening hole for fastening the clip to the main runner.
19. The clip of claim 17, wherein the second leg having at least one fastening hole for fastening the clip. (S C C. C CC C C CC 'C *%iII~ em C CCC. 4* (C CC* C C C CCC... C* C CISC C C 4 4*
20. The clip of claim 16, wherein the second leg is connected to a compression strut. DATED THIS 25 DAY OF FEBRUARY 2002 ARMSTRONG WORLD INDUSTRIES, INC. Patent Attorneys for the Applicant:- F B RICE CO 13 C CCCCCCC. 4 4 *C C 4 .4.9 *4C CC C CC C C CCC 4 C CC CCC. 4* C CCC. C C. CCC C C C. C C C C *CC C
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27166001P | 2001-02-26 | 2001-02-26 | |
| US60/271660 | 2001-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1868002A true AU1868002A (en) | 2002-08-29 |
| AU784998B2 AU784998B2 (en) | 2006-08-17 |
Family
ID=23036516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU18680/02A Ceased AU784998B2 (en) | 2001-02-26 | 2002-02-25 | Ceiling grid system |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20020157332A1 (en) |
| EP (1) | EP1236837B1 (en) |
| AT (1) | ATE294293T1 (en) |
| AU (1) | AU784998B2 (en) |
| CA (1) | CA2373235A1 (en) |
| DE (1) | DE60203836T2 (en) |
| ES (1) | ES2241908T3 (en) |
| MX (1) | MXPA02001962A (en) |
| SG (1) | SG129997A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7730690B2 (en) * | 2006-12-27 | 2010-06-08 | Usg Interiors, Inc. | Compression post assembly for wind up-lift of suspension soffits |
| US9771718B1 (en) | 2016-10-07 | 2017-09-26 | Tate Access Floors Leasing, Inc. | Strut with non-structural infill |
| US10106982B2 (en) | 2017-03-13 | 2018-10-23 | Rockwool International A/S | High strength grid member for suspended ceilings |
| US11802407B2 (en) | 2021-11-23 | 2023-10-31 | Rockwool A/S | Suspended drywall ceiling grid system support members |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1415273A (en) * | 1917-03-09 | 1922-05-09 | Stevens Partition | Ceiling construction |
| US3035672A (en) * | 1958-11-12 | 1962-05-22 | Luminous Ceilings Inc | Subceiling track structure |
| US3081398A (en) * | 1960-03-11 | 1963-03-12 | Ralph E Karth | Lighting fixture support |
| FR1272449A (en) * | 1960-11-03 | 1961-09-22 | Elektro Metall | Construction of suspended ceilings with prefabricated suspension elements and cover plates |
| NL137695C (en) * | 1963-08-05 | |||
| GB1278521A (en) * | 1968-05-30 | 1972-06-21 | Gabriel John Macgrath | Improvements in and relating to wall and ceiling constructions |
| US3586282A (en) * | 1969-03-27 | 1971-06-22 | Armstrong Cork Co | Lighting fixture mounting bracket |
| US3599921A (en) * | 1970-01-14 | 1971-08-17 | Erico Prod Inc | Independent support clips |
| US3612461A (en) * | 1970-04-20 | 1971-10-12 | Minerallac Electric Co | Light fixture supporting clip |
| US4081931A (en) * | 1975-01-11 | 1978-04-04 | Kiyotaka Miyoshi | Anti-smoke hanging wall and construction method |
| US3998419A (en) * | 1975-11-03 | 1976-12-21 | United States Gypsum Company | Swivel type hanger bracket |
| US3998020A (en) * | 1975-11-03 | 1976-12-21 | United States Gypsum Company | Adjustable suspension systems for ceilings |
| US4084364A (en) * | 1976-04-12 | 1978-04-18 | Roblin Industries, Inc. | Compression strut for suspended ceiling |
| US4191352A (en) * | 1978-08-21 | 1980-03-04 | Fastway Fasteners, Inc. | Rotatably installed suspension clip |
| US4189893A (en) * | 1978-09-11 | 1980-02-26 | United States Gypsum Company | Ceiling runner and panel assembly having sliding lockability |
| US4266384A (en) * | 1979-06-22 | 1981-05-12 | United States Gypsum Company | Fire resistant ceiling furring system |
| US4294054A (en) * | 1979-08-09 | 1981-10-13 | United States Gypsum Company | Soffit system for suspended ceiling |
| US4384437A (en) * | 1980-10-28 | 1983-05-24 | Anglia Jay Purlin Company Limited | Heat insulating roofing systems |
| JPS5918843A (en) * | 1982-07-21 | 1984-01-31 | 株式会社ナカ技術研究所 | Ceiling structure used in building |
| US4545166A (en) * | 1983-11-21 | 1985-10-08 | Manville Service Corporation | Ceiling insulation system |
| US4630423A (en) * | 1984-12-24 | 1986-12-23 | United States Elevator Corporation | Suspended-ceiling framework assembly |
| US4723749A (en) * | 1986-05-19 | 1988-02-09 | Erico International Corporation | Channel clip |
| US4905952A (en) * | 1987-11-12 | 1990-03-06 | Pinquist Tool & Die Co., Inc. | Locking skirt for channel-beam clamp |
| US4805855A (en) * | 1987-12-18 | 1989-02-21 | Kirby Thomas S | Bar hanger for hanging conduits or the like |
| US5619833A (en) * | 1995-01-26 | 1997-04-15 | Neff; Eric S. | Suspended ceiling system |
| DE19510741A1 (en) * | 1995-03-24 | 1996-09-26 | Wilhelmi Werke Gmbh & Co Kg | Longitudinal or cross member for a ceiling cladding |
| US6360507B1 (en) * | 2000-08-24 | 2002-03-26 | Icon International, Inc. | Universal support clip for suspended ceilings |
-
2002
- 2002-02-22 SG SG200201104-7A patent/SG129997A1/en unknown
- 2002-02-25 DE DE60203836T patent/DE60203836T2/en not_active Expired - Fee Related
- 2002-02-25 AU AU18680/02A patent/AU784998B2/en not_active Ceased
- 2002-02-25 MX MXPA02001962A patent/MXPA02001962A/en unknown
- 2002-02-25 AT AT02004131T patent/ATE294293T1/en not_active IP Right Cessation
- 2002-02-25 US US10/084,795 patent/US20020157332A1/en not_active Abandoned
- 2002-02-25 ES ES02004131T patent/ES2241908T3/en not_active Expired - Lifetime
- 2002-02-25 EP EP02004131A patent/EP1236837B1/en not_active Expired - Lifetime
- 2002-02-26 CA CA002373235A patent/CA2373235A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE60203836T2 (en) | 2006-01-26 |
| ATE294293T1 (en) | 2005-05-15 |
| US20020157332A1 (en) | 2002-10-31 |
| ES2241908T3 (en) | 2005-11-01 |
| EP1236837B1 (en) | 2005-04-27 |
| CA2373235A1 (en) | 2002-08-26 |
| SG129997A1 (en) | 2007-03-20 |
| EP1236837A1 (en) | 2002-09-04 |
| DE60203836D1 (en) | 2005-06-02 |
| AU784998B2 (en) | 2006-08-17 |
| MXPA02001962A (en) | 2004-08-12 |
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