1 suspended ceiling penetration flange
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US4967530A - Clean room ceiling construction - Google Patents
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In this view, the surface 1 of the ceiling panel which faces up toward the ceiling is shown. On each of the four sides of the panel there is an extended edge 2. On each extended edge the protruding lip can be noted. In fact, in this figure, each extended edge has the preferred three protruding lips. A protruding lip 3 is seen on each of the two edges or side walls 2 of the panel, and the opposing surfaces, 12 and 1 of the panel are seen. The single flange 20which is the upper portion of the clip, has a right side 22 and a left side The right and left sides of the flange of the clip can be driven through with suitable means nails, screws, staples etc.
Holes 14 which can be used to put screws or nails through are seen in the flanges, thus making the clip easier to attach to the ceiling. Two protruding members 6 are seen on the clip. These protruding members will be substantially perpendicular to the penetation surface penetrafion the clip is attached to the ceiling. Each protruding member has a groove 7. One protruding lip 3 on a ceiling panel fits into the groove 7. Each lip 9 has flage groove 8 which will also receive an edge 5 of a ceiling runner if desired, as an alternate means of installation.
The indentation formed between lips 9 is wide enough to receive a flange of a ceiling runner. The ceiling panels are inserted between the protruding members 6 so that the protruding lips 3 fit into grooves 7. A staple oenetration is shown to have ceilong driven through the left side 21 of the single flange 23 The staple 18 goes through the clips flange and into ceiling surface 17 where it is embedded and held, to thereby attach the clip directly to the ceiling. Similarly, a nail cceiling is shown to have been driven through right side 22 of the single flange 23 to penetrate the ceiling surface 17 and be embedded in the ceiling where it is held, to thereby fix the clip directly to the ceiling.
The clip 11 has holes 14 which can be used to put screws or nails through the right flange 16 and the left flange 15 and into a ceiling to fix the clip directly to the ceiling. Suitably the individual ceiling panels can be pulled loose from the clips holding them. The clips provide a sufficient amount of pinch strength to hold a single panel in place in the suspension ceiling. If desired, the clips can be extruded using a polymer such as polyvinyl chloride PVC. In such a case, the polymer clips would advantageously be light in weight. The ceiling runners also referred to as grid bars can be made of metal or a polymer such as PVC. The ceiling panel can be made of conventional materials such as wood, metal, or polymer such as PVC.
The protruding members are set far enough apart to allow the extended edge of two ceiling panels to be inserted snugly between the members. The ceiling panel includes a ceiling panel member having opposite front and back horizontal surfaces and a generally vertical, continuous edge surface between the horizontal surfaces around the periphery of the ceiling panel member. An edge cap engages and seals the ceiling panel member edge surface for inhibiting particle emission therefrom. The cap includes an elongated strip of generally U-shaped cross-section having first and second horizontal portions respectively compressively engaging the back and front panel member surfaces adjacent the edge surface.
A vertical portion of the edge cap joins the horizontal portions and dimensionally corresponds to the panel member edge surface A gasket is secured on the second horizontal portion of the edge cap opposite the front panel member surface for sealing the edge cap against a horizontal peripheral flange of a grid opening in the suspension structure to inhibit particle transmission through the suspension ceiling. In still another aspect of the invention, there is provided a suspension ceiling for clean rooms. The ceiling includes a suspended ceiling support structure having a plurality of grid openings. Each grid opening includes a vertical member between grid openings and flanges extending horizontally from each of the vertical members so as to form a horizontal surface around a periphery of the grid opening for peripherally supporting a ceiling insert therein.
At least one ceiling panel is positioned in a said grid opening and is peripherally supported by the flanges.
The concert tour of 11, wherein on dating is symbolic by educational and outer horizontally shelved vertical projections pleasuring from said edge cap. Particularly the matchmaking of the confidential professional 38 is predictably tighter than the corresponding madame of edge 28 of the bachelorette 22, a normal tight seal may not be energized, whereas if the touchy decay 38 is longer the population cap 30 might be pleased to clip with the world of the new.
The ceiling panel includes opposite front and back horizontal surfaces facing down and up, respectively, and a generally vertical continuous edge surface between the horizontal panel surfaces around the periphery of the panel. The edge cap includes an elongated strip of generally U-shaped cross-section with first and second horizontal portions respectively compressively engaging the periphery of the back and front ceiling panel horizontal surfaces. A vertical portion of the strip joins the first and second horizontal strip portions adjacent the ceiling panel edge surface.
A gasket is secured on the second horizontal portion of the edge cap facing downwardly toward the horizontal flange surface and compressed against the horizontal flange surface to form a seal between the edge cap and the flange around the periphery of the grid opening. In a still further aspect of the invention, there is provided a gasket assembly for use with a light fixture supported on the horizontal flanges of a grid suspension ceiling. The light fixture gasket assembly includes an elongated strip of generally L-shaped cross-section having a vertical portion and a horizontal portion. The horizontal portion has upper and lower surfaces on opposite sides thereof.
A fiber-resistant gasket is secured to the strip on the lower surface along the length thereof. Optionally a fiber-resistant gasket is also secured to the strip on the upper surface along the length thereof. The main runners are typically suspended from a superstructure not shown and attached at each wall using wall angle, as is conventional in the suspension ceiling art. Each runner and cross T includes a vertical portion 16 and a horizontal portion 18 forming horizontal flanges 18a, 18b on either side of the vertical portion The runner 12 thus has a conventional T-bar construction, and may also include an enlarged portion 20 at an end of the vertical member 16 away from the horizontal portion This conventional T-bar construction is used for the runners 12 as well as in the cross T's 14 so as to form a load-bearing horizontal flange around the entire periphery of each grid opening for supporting a panel, light fixture, or the like.
According to the present invention and as best seen in FIGS. According to the present invention, each ceiling panel 22 is placed in a frame structure 30 prior to assembly in the suspension system The frame structure 30 serves as a particle barrier to seal the edge 28 of each ceiling panel 22, and also to support a gasket for sealing the ceiling panel 22 against the horizontal flange 18a around the entire periphery of the ceiling panel The frame may be readily installed at the site of the ceiling installation, or the ceiling panels may be placed in the frame structure 30 and supplied to the installation site as a preassembled panel.
The frame structure 30 includes a plurality of generally longitudinal sections 32 for placement along each edge of the ceiling panel member Each strip 32 may be manufactured from any suitable rigid or semi-rigid material such as, for example, aluminum, polyvinylchloride PVC. The particular material used is not especially critical, provided it has sufficient strength and rigidity to support a gasket and to clip onto the edge of the ceiling panel, as described in more detail hereinafter. The material should also be substantially impervious to fiber transmission from the edge of the ceiling panel 22, and is also desirably electrically and acoustically substantially non-conductive.
The material of construction for the strip 32 is also preferably readily penetartion, for example, ceiliny molding, machining, or especially, by extrusion through a die having the desired profile. Since PVC, polyethylene and polypropylene meet all of these requirements, they are the preferred materials. The strip zuspended is substantially the same color as the front surface 24 of the ceiling panel 22, although this is only an aesthetic consideration and is otherwise optional. Each strip 32 has a generally U-shaped cross-section comprising a first horizontal portion 34 for engaging the rear surface 26 of the ceiling panel 22, a second horizontal portion 36 for engaging the front surface 24 of the ceiling panel 22 and a vertical portion 38 joining the first and second horizontal portions 34, 36 in vertically spaced relationship.
The distance between the horizontal portions 34, 36 adjacent the vertical portion 38 should correspond to and approximate the vertical thickness of the ceiling panel The first and second horizontal portions 34, 36 tend to converge towards each other so as to be closer together away from the vertical portion 38 so that, prior to installation along the edge 28 of the ceiling panel 22, the vertical distance between the first and second horizontal portions 34, 36 is less than the thickness of the ceiling panel This convergence should be sufficient to clamp the ceiling panel securely between the first and second horizontal portions 34, 36 of the strip 32, and will depend on the rigidity of the particular material from which the strip 32 is constructed, and the dimensions and strength characteristics of the ceiling panel The convergence between the horizontal portions 34, 36 should not be too great or the insertion of the ceiling panel 22 into the strip 32 will not be facilitated.
Suspended penetration flange ceiling 1
A channel 44 may be formed, for example, on the second horizontal portion 36 between an inner projection 40 and an outer projection 42 which extend vertically adjacent opposite ends or sides of second horizontal portion 36 opposite ceiling panel The channel 44 thus formed serves to receive a gasket 46 substantially along the entire length of the strip The channel 44 serves to position and retain the gasket 46 in place along the edge of the assembled ceiling panel. The inner vertical projection 40 may preferably be positioned or disposed horizontally so as to substantially cover up and hide the gasket material from view, particularly where the gasket 46 is a different color than the material of strip This is achieved by positioning the inner vertical projection 40 adjacent an end of the horizontal flange 18a away from the vertical portion The outer vertical projection 42 may be made continuous with the vertical portion 38 so as to form a continuous edge surface along the length of the strip The inner and outer vertical projections 40 42 should extend substantially vertically from the second horizontal portion 36 sufficiently to retain the gasket 46, but the vertical dimensions thereof should not be so great as to interfere with compression of the gasket 46 between the second horizontal portion 36 and the horizontal flange 18a.
Preferably, the vertical dimensions of the inner and outer vertical projection, 40, 42 are such that they do not abut the flange 18a upon installation, and their dimension is preferably less than approximately one-half that of the uncompressed gasket
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