US20060000177A1 - Frame assembly and environmental enclosure - Google Patents
Frame assembly and environmental enclosure Download PDFInfo
- Publication number
- US20060000177A1 US20060000177A1 US10/955,388 US95538804A US2006000177A1 US 20060000177 A1 US20060000177 A1 US 20060000177A1 US 95538804 A US95538804 A US 95538804A US 2006000177 A1 US2006000177 A1 US 2006000177A1
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- Prior art keywords
- shaped
- channel
- wall
- integral
- frame assembly
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- 230000007613 environmental effect Effects 0.000 title claims abstract description 50
- 230000000712 assembly Effects 0.000 abstract description 38
- 238000000429 assembly Methods 0.000 abstract description 38
- 239000000356 contaminant Substances 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- -1 polyethylene Polymers 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 241000571645 Sabellastarte magnifica Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
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Images
Classifications
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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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34321—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0692—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining flexible sheets to other sheets or plates or to strips or bars
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2002/7479—Details of connection of flexible sheets to frame or posts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2002/7498—Partitions for clean rooms
Definitions
- This invention relates to an environmental or contaminant shield or enclosure which prevents airborne contaminants from contacting a part received within or transmitted through the environmental or contaminant enclosure. More particularly, this invention relates to a frame assembly for an environmental or contaminant shield or enclosure and the shield or enclosure.
- Environmental or contaminant shields or enclosures are utilized by many industries to prevent airborne contaminants from contacting a part received within or transmitted through the environmental or contaminant shield or enclosure.
- Such enclosures are used, for example, in an automotive paint facility, wherein the vehicle body is conveyed through clean tunnels between the several steps performed in the paint shop including, for example, sanding, tack-off (typically performed by feather dusters), paint booths and ovens to prevent airborne contaminants, including particulate and waterborne contaminants, from contacting the vehicle body following sanding, cleaning, tack-off and painting.
- a typical automotive paint facility may include over a mile of clean tunnels.
- a typical clean tunnel or enclosure includes a frame assembly comprised of like channel-shaped frame members formed from sheet metal, typically steel, each having an open end, including an end or bottom wall and opposed side walls having opposed inwardly projecting end portions, wherein an end cap is received in the opening end of the channel-shaped frame members which secures a flexible film stretched over the frame members forming the clean tunnel as disclosed, for example, in U.S. Pat. Nos. 4,860,778 and 5,906,078.
- the like channel-shaped frame members are then interconnected in end to end relation into a rectangular frame and the flexible sheet is stretched over the frame members and the rectangular frame members are then interconnected in side to side or end to end relation to form a U-shape clean tunnel or enclosure, preventing airborne contaminants from contacting a part received in the clean tunnel or enclosure.
- the frame members are first interconnected in end to end relation to form a rectangular frame, a flexible film is stretched over the rectangular frame and secured by end caps and the rectangular frame members with the flexible film are then interconnected in end to end and side to side relation with fasteners or clips.
- the environmental enclosure and frame assembly of this invention solves the problems associated with the prior art described above, including frame members which may be easily and securely assembled and wherein the flexible film may be easily assembled on the frame members or removed and replaced if damaged.
- the frame assembly for an environmental enclosure of this invention includes a plurality of interconnected channel-shaped frame members, wherein each of the frame members includes a first end wall, opposed spaced side walls extending generally perpendicular to and integral with the first end wall and an opening opposite the first end wall adapted to receive and retain an end cap for retaining a film over the frame assembly.
- the channel-shaped frame members may be generally similar to the frame members disclosed in the above-referenced U.S. patents.
- the frame members of this invention further include an integral internal retainer channel within the channel-shaped frame members including a retainer wall integral with and extending generally perpendicular to one of the side walls, spaced from the end wall, for receiving a connector element interconnecting the channel-shaped frame members into a rectangular frame or for interconnecting abutting transverse frame members for braces or the like.
- the internal retainer wall is generally L-shaped, including a first portion integral with and extending generally perpendicular to the side wall and an end portion extending toward the first end wall of the channel-shaped frame member and in the disclosed embodiment, the first end wall further includes an internal retainer wall extending toward the end portion of the generally L-shaped retainer wall, forming an integral internal channel for receiving a retainer element as described.
- the channel-shaped frame members are formed from extruded aluminum, forming a light weight rigid construction.
- the first side wall which includes the internal retainer channel, has a second end wall extending from and integral with the first side wall and the opening which receives the end cap is adjacent the second side wall and the opening is defined by parallel enlarged bead-shaped portions to receive and retain the end cap which retains a film overlying the frame assembly.
- the end portions of the side walls are U or hook-shaped each having an enlarged bead-shaped portion extending toward the first end wall.
- the channel-shaped frame members further include an L-shaped retainer portion including an end wall portion integral with a side wall, preferably a side wall opposite the integral internal channel described above, extending parallel to the first end wall and preferably aligned with the first end wall, and an end portion integral with and extending generally perpendicular to the end wall portion of the retainer portion forming a channel-shaped retainer or connector portion for interconnecting adjacent channel-shaped members in side to side relation
- the channel-shaped frame members of the frame assembly include a first plurality of channel-shaped members each having a generally L-shaped connector portion extending from one side wall and a second plurality of channel-shaped members which are a mirror image of the first channel-shaped members, and wherein the L-shaped retainer portions are aligned in side to side abutting relation and a fastener interconnects the first and second channel-shaped members.
- the channel-shaped frame members of this invention are first assembled into rectangular frame assemblies, wherein the ends are preferably mitered or cut at a 45 degree angle and an L-shaped connector element having a first leg portion is received in the internal retainer channel of one frame member and a second leg portion is received in an internal channel of a perpendicular second channel-shaped frame member forming a rectangular frame assembly.
- the rectangular frame assembly is then covered with a thin, preferably transparent film and secured by end caps, such that each rectangular frame assembly is covered by a thin transparent film.
- the rectangular frame assemblies are then secured in side to side relation by a fastener, such as a clip, rivet or the like.
- the frame assemblies are interconnected in side to side relation by a U-shaped retainer member having end portions received around the adjacent channel-shaped frame members and secured by suitable fasteners, such as screws, bolts, or the like.
- the frame assemblies may be rectangular or square.
- a rectangular frame assembly is first formed having a height equal to the desired height of the environmental enclosure and the rectangular frame assemblies include cross members having end portions secured to the rectangular frame assembly by U-shaped retainer members received within the cross members having slots received in the opposed end portions of the internal retainer channel, forming a light weight rigid assembly.
- the preferred alternative embodiment of the frame assembly has the advantage that the frame assembly is more rigid and does not require mirror image channel-shaped frame members and is thus less expensive to manufacture and assemble.
- the channel-shaped frame members are extruded, preferably extruded aluminum, forming a rigid lightweight frame assembly which is easily assembled or disassembled, as required.
- the thin flexible film may be easily secured to or replaced on the frame assemblies by end caps which, in a preferred embodiment, includes a planar end portion and projecting generally parallel outwardly bowed legs which are received between the parallel enlarged bead-shaped portions defining the opening to the channel-shaped frame members, securely retaining the flexible film.
- FIG. 1 is a side perspective view of one embodiment of an environmental enclosure of this invention
- FIG. 2 is a partial exploded view of the ends of two frame members, a connector channel, end caps and flexible film illustrating the assembly of the frame members shown in FIG. 1 in end to end relation;
- FIG. 3 is a side view of a rectangular frame assembly, which is a component of the environmental enclosure shown in FIG. 1 ;
- FIG. 4 is a side cross-sectional view of FIG. 3 in the direction of view arrows 4 - 4 with the end cap and film;
- FIG. 5 is a partially exploded top perspective view of two rectangular frame assemblies shown in FIG. 1 illustrating one means of interconnecting the frame assemblies further illustrated in FIG. 6 ;
- FIG. 6 is an end cross-sectional view of two frame members shown in FIG. 1 interconnected in side to side relation;
- FIG. 7 is a side cross-sectional view similar to FIG. 5 with an alternative fastener interconnecting the frame members;
- FIG. 8 is a partial side view of an alternative embodiment of the environmental enclosure of this invention.
- FIG. 9 is a partial side cross-sectional view of FIG. 8 in the encircled area 9 ;
- FIG. 10 is a cross-sectional view of FIG. 9 , in the direction of view arrows 10 - 10 ;
- FIG. 11 is a perspective view of one embodiment of the corner connector element illustrated in FIGS. 9 and 10 ;
- FIG. 12 is a partial side cross-sectional view of FIG. 8 in the direction of view arrows 12 - 12 ;
- FIG. 13 is an end cross-sectional view of FIG. 8 in the direction of view arrows 13 - 13 ;
- FIG. 14 is a side cross-sectional view of FIG. 8 in the encircled area 14 ;
- FIG. 15 is as end cross-sectional view of FIG. 14 in the direction of view arrows 15 - 15 ;
- FIG. 16 is a perspective view of the connector element shown in FIGS. 14 and 15 ;
- FIG. 17 is an end cross-sectional view of FIG. 8 in the direction of view arrows 17 - 17 .
- the embodiment of the environmental enclosure or clean tunnel 20 shown in FIG. 1 and FIGS. 2 to 7 includes a plurality of interconnected rectangular frame assemblies 24 interconnected in side to side relationship, each including four frame members 26 or 26 A interconnected in end to end and side to side relation having a flexible film 28 preferably stretched between the frame members 26 and 26 A.
- the flexible film 28 may be formed of any suitable material, including a transparent polymeric film, such as polyethylene, having a thickness of for example about 0.18 mm and preferably formed of a polymer, such as polyethylene or a polyethylene resin which shrinks upon heating, such that the flexible film 28 may be stretched between the frame members 26 and 26 A when heated, providing a smooth and regular surface.
- the shape or configuration of the environmental enclosure or clean tunnel 20 will depend upon the application of the environmental enclosure.
- the environmental enclosure 20 may be in the form of a clean tunnel, as shown in FIG. 1 , for enclosing a conveyor (not shown) for conveying a vehicle body (not shown) between the various work stations in a paint shop and may include access doors 30 .
- the environmental enclosure 20 may be in the form of a housing having closed ends (not shown) for storage of manufactured parts in a manufacturing facility to prevent contamination of the parts prior to subsequent manufacturing operations.
- the disclosed embodiment of the environmental enclosure 20 and frame assembly of this invention may be sufficiently rigid to be a free standing structure supported by the floor or may include additional reinforcement (not shown in FIG. 1 ) again depending upon the application.
- FIG. 4 is a cross-section of one preferred embodiment of a channel-shaped frame member 26 which includes a channel-shaped portion 32 and an integral connector portion 34 .
- the channel-shaped portion 32 includes a first end wall portion 36 , a first side wall 38 extending generally perpendicular to and integral with the first end wall portion 36 and a second side wall portion 40 spaced from the first side wall 38 extending perpendicular to and integral with the first end wall portion 36 forming a channel-shaped portion 32 having an opening 39 opposite the first end wall 36 as shown in FIG. 4 .
- the first side wall 38 includes an end portion 42 at or adjacent the opening 39 at the open end of the channel-shaped portion 32 extending toward the second side wall 40 and the second side wall 40 includes an end portion 44 extending toward the first side wall 38 for receiving and retaining an end cap 64 as described below.
- the second side wall 40 also includes a second end portion 46 extending away from the first end portion 44 and overlying the end wall 48 of the connector portion 34 .
- the disclosed embodiment of the connector portion 34 includes an end wall portion 48 which is integral with the second side wall 40 and generally aligned or continuous with the first wall portion 36 .
- the connector portion 34 further includes a leg portion 50 which is spaced from the second side wall 40 and preferably extends generally perpendicular to and is integral with the end wall portion 48 of the connector portion 34 as shown in FIG. 4 .
- the leg portion 50 has a shorter length than the side walls 38 and 40 of the channel-shaped portion 32 .
- the end portions 42 , 44 and 46 include an enlarged bead-shaped cap retainer portion 52 which are generally parallel to the side walls 38 and 40 and extend toward the first end wall 36 and the end wall 48 of the connector portion, respectively, having an enlarged bead-shaped cross-section and an arcuate outer exterior surface to receive and retain end caps as described below.
- the frame members 26 are preferably interconnected in end to end relation to form rectangular frame assemblies 24 as shown in FIGS. 1 and 3 .
- the channel-shaped portion 32 of each of the frame members 26 includes an internal integral channel 55 configured to receive corner connectors 54 , also shown in FIG. 2 .
- the internal channels 55 include a generally L-shaped portion 56 integral with the first side wall 38 having an end portion 58 extending toward the first bottom portion 36 and the internal channel 55 may include a second wall portion 60 which extends generally perpendicular to and is integral with the first bottom wall portion 36 generally aligned with the end portion 58 of the generally L-shaped web portion 56 , forming an integral internal channel 55 in the channel-shaped portion 32 having an opening opposite the second side wall 40 as best shown in FIG. 4 .
- the generally L-shaped web portion 56 may also be arcuate or J-shaped to receive an arcuate corner connector channel 54 .
- the frame members 26 may be formed of aluminum and extruded forming a light weight relatively rigid structure at reduced cost. As shown in FIG. 3 , the ends of the frame members 26 may be mitered or cut at a 45 degree angle, such that the abutting ends interfit as shown in FIG. 3 to form the rectangular frame assemblies 24 as best shown in FIG. 2 .
- the corner connectors 54 in this embodiment are preferably L-shaped having leg portions 62 which are telescopically received in the internal channels 55 in the channel-shaped portions 32 of the frame members 26 to complete the assembly of the rectangular frame assemblies 24 .
- the flexible film 28 may then be received over the inwardly projecting end portions 42 and 44 of the side walls 38 and 40 , respectively, and secured in place by a first end cap 64 as shown in FIGS. 2 and 4 .
- a first end cap 64 as shown in FIGS. 2 and 4 .
- the entire frame assembly may be assembled before application of the flexible film 28 and end caps 64 .
- the first end caps 64 include a planar end portion 66 and projecting generally parallel outwardly bowed legs 68 .
- the legs 68 may include an arcuate outer surface 70 and the distal ends 70 of the leg portions 68 may be bowed slightly outwardly to interfit with the arcuate cap retainer portions 52 of the end portions 42 and 44 of the side walls 38 and 40 , respectively, to securely retain the flexible film 28 .
- the first end caps 64 may be formed from an extruded polymer, such as polyethylene or polypropylene, and the flexible film 28 is preferably formed of a heat shrinkable polymer, such as polyethylene, and the flexible film 28 is then preferably heated following assembly to stretch the film 28 over the rectangular frame assemblies 24 and 24 A.
- an extruded polymer such as polyethylene or polypropylene
- the flexible film 28 is preferably formed of a heat shrinkable polymer, such as polyethylene, and the flexible film 28 is then preferably heated following assembly to stretch the film 28 over the rectangular frame assemblies 24 and 24 A.
- the frame members include frame members 26 as just described and frame members 26 A which are substantially a mirror image of the frame members 26 , but may be otherwise identical. That is, the frame members 26 A may be identical to the frame members 26 except that the channel-shaped connector portion 32 A is on the right in FIGS. 6 and 7 and the connector portion 34 A is on the left in FIGS. 6 and 7 , whereas the channel-shaped portion 32 of frame member 26 is on the left in FIGS.
- the rectangular frame members 24 are retained by a U-shaped clip 74 having parallel leg portions 76 received over the leg portions 50 and 50 A of the frame members 26 and 26 A, respectively, retaining the rectangular frame members 24 and 24 A in side to side abutting relation.
- the U-shaped clips may be formed of a metal, such as aluminum, but are preferably formed of a relatively rigid extruded plastic, such as polypropylene. The frame assembly shown in FIG. 6 , may thus be assembled without tools or skilled labor.
- the leg portions 50 and 50 A preferably have a length less than the length of the side walls 38 , 40 , 38 A and 40 A to provide easy access to the connector portions 34 and 34 A, respectively, for securement of the frame members 24 and 24 A together as described.
- FIG. 5 also illustrates the assembly of two rectangular frame members 24 and 24 A with the U-shaped clip 74 , wherein the leg portions 50 and 50 A are first aligned and moved into abutting relation and the U-shaped clip 74 is then received over the abutting leg portions 50 and 50 A.
- FIG. 7 illustrates an alternative means of securing the leg portions 50 and 50 A using conventional rivets 78 received through openings 80 in the abutting leg portions 50 and 50 A.
- the assembly of FIG. 7 is otherwise identical to the assembly shown in FIG. 6 and thus no further description is required.
- the embodiment of the frame assemblies shown in FIGS. 6 and 7 may then be finished and sealed with second end caps 82 , which are identical to the first end cap 64 , except for size. That is, the second end caps 82 include a planar end portion 84 and generally parallel outwardly bowed legs 86 which are received between the opposed second end portions 46 and 46 A of the second side walls 40 and 40 A, respectively, as shown in FIGS. 5, 6 and 7 . Although the second end caps 82 are optional, they prevent the accumulation of dust or debris in the connector portions 34 and 34 A and provide a more finished assembly.
- the embodiment of the frame assembly of this invention shown in FIG. 1 and the frame assemblies described below may be assembled before application of the film 28 which would be difficult, if not impossible, with the frame assemblies for environmental enclosures disclosed in the above referenced prior art. That is, the channel-shaped frame members 26 may first be assembled into rectangular frame assemblies 24 , as described above, and the rectangular frame assemblies may then be assembled into an enclosure, such as the clean tunnel 20 shown in FIG. 1 , before application of the flexible film 28 . This is an important advantage over the prior art because the flexible film 28 may be damaged during assembly.
- the flexible film 28 is cut to size and applied over the opposed end portions 42 and 44 or 42 A and 44 A, and secured in place by the first end cap 64 and preferably heated to stretch the film in place over the rectangular frame assemblies 24 and 24 A.
- the flexible film 28 is transparent because this method of assembly provides a clear view of the interior of the environmental enclosure 20 .
- the clear film may be damaged or coated with debris during use and the configuration of the frame members 26 and 26 A makes replacement of the flexible film easy and simple without requiring tools.
- the first end caps 26 are simply removed and the flexible film 28 may be easily replaced.
- the frame assemblies of this invention may also be easily disassembled and changed or stored without special tools, particularly where the rectangular frame assemblies are secured in side to side relation with a clip, such as shown at 74 in FIG. 6 .
- the alternative preferred embodiment of the environmental enclosure or clean tunnel 120 shown in FIG. 8 also includes a plurality of interconnected frame assemblies 124 interconnected in side to side relation as described below and the rectangular frame members 124 are covered with a flexible film 128 which is preferably stretched over the frame assemblies as described above.
- the rectangular frame members 124 preferably have a height equal to the desired height of the environmental enclosure and may include cross members 122 for rigidity as described below.
- the shape or configuration of the environmental enclosure 20 will depend upon the application of the environmental enclosure.
- the embodiment of the rectangular frame assemblies 124 shown in FIG. 8 are formed from a plurality of channel-shaped frame members 132 best shown in cross-section in FIG. 10 .
- this embodiment of the channel-shaped members 132 each include a first end wall 136 and opposed first and second side walls 136 and 138 which are preferably integral with and extend generally perpendicular to the first end wall 136 .
- the channel-shaped members 132 further include an opening 139 opposite the first end wall 136 for receipt of an end cap 164 as described above.
- the end portion or second end wall 142 of the side wall 138 opposite the first end wall 136 extends to the opening 139 , such that the opening 139 is spaced from the integral internal retainer channel 155 formed by the generally L-shaped wall 156 integral with the first side wall 138 and the wall 160 integral with the first end wall 136 .
- the end portion 158 of the L-shaped internal wall 156 preferably extends toward the first end wall 136 and the end wall 136 further includes an integral internal wall 160 which extends toward the end portion 158 , forming an integral internal channel 155 for receipt of a connector element 154 as described below.
- the L-shaped wall 156 may also be arcuate.
- the opening 139 opposite the first end wall 136 includes parallel enlarged bead-shaped portions 152 and 153 having an arcuate outer surface, wherein the bead-shaped portion 152 at the end of the second end wall 142 extends toward the first end wall 136 and the enlarged bead-shaped portion 153 at the distal end of the second side wall 140 extends inwardly from the second side wall 140 as shown in FIG. 10 .
- a preferred embodiment of the end cap 164 includes a planar portion 166 and generally parallel outwardly bowed leg portions 168 having an outer surface 170 and bowed end portions 172 which are securely retained between the parallel bead-shaped end portions 152 and 153 , securely retaining the flexible film 128 .
- the elements of the channel-shaped frame members 132 are numbered in the same sequence as the channel-shaped frame members 32 for ease of understanding.
- the rectangular frame assemblies 124 may be formed by mitering the ends of the channel-shaped frame members 132 at a 45 degree angle as shown in FIG. 9 and the connector element 154 is L-shaped, as best shown in FIG. 11 having perpendicular end portions 155 preferably including a plurality of teeth 157 outwardly inclined from the distal ends in a “Christmas tree” configuration to securely retain the leg portions 155 in the integral internal channels 155 formed by the L-shaped wall 156 integral with the first side wall 138 and an opposed wall 160 integral with the first end wall 136 .
- the L-shaped connector element 154 may be an aluminum extrusion.
- this embodiment of the frame members does not include an L-shaped integral connector portion 34 , but this embodiment of the channel-shaped frame members 32 does not require a mirror image frame member as described above with reference to FIGS. 5 to 7 and thus results in less cost and a more rigid construction as described below.
- FIG. 12 illustrates a suitable tie down of the environmental enclosure 120 to the floor 180 , such as the concrete floor of a manufacturing facility.
- an L-shaped tie down plate having a horizontal portion 182 is affixed to the floor 180 by a conventional concrete anchor bolt 184 having a nut 186 .
- the vertical leg 188 is attached to the first end wall 136 of the channel-shaped member 132 by a conventional machine screw 190 or the like, forming a rigid support for the environmental enclosure 120 shown in FIG. 8 .
- FIG. 13 illustrates a suitable interconnection between adjacent channel-shaped frame members 132 in side to side abutting relation with a U-shaped connector plate 192 .
- the U-shaped connector plate 192 includes a planar central portion 194 having a width slightly greater than the combined width of the first end walls 136 of two abutting channel-shaped frame members 132 and transverse leg portions 196 which receive the second side walls 140 of the channel-shaped frame members 132 and the central portion 194 is affixed to the first end wall 136 by machine screws 198 or the like.
- FIGS. 14 and 15 illustrate a suitable connection between the vertical channel-shaped members 132 and the cross members 122 shown in FIG. 8 .
- the cross members 122 are identical to the channel-shaped frame members 132 and the horizontal cross members 122 are attached to the vertical channel-shaped frame members 132 by a U-shaped connector plate 200 best shown in FIG. 16 .
- the connector plate 200 includes a planar central portion 202 having opposed transverse slots 204 adjacent to but spaced from one of the perpendicular leg portions 206 .
- the central portion 202 of the U-shaped connector plate 200 is attached to the first end wall 136 of the vertical channel-shaped frame members 132 by machine screws 208 or the like.
- transverse leg portions 206 of the U-shaped connector plate 200 are then received within the channel-shaped transverse brace member 122 and secured by machine screws 210 .
- leg portion 158 of the L-shaped internal channel portion is received in one slot 204 and the opposed internal wall 160 is received in the opposed slot forming a very rigid construction as shown in FIG. 15 .
- FIG. 17 illustrates a suitable interconnection between the top transverse frame member 132 of the rectangular frame assembly 124 and a channel-shaped frame member 212 of a rectangular frame assembly which forms the top of the environmental enclosure 120 generally as shown in FIG. 1 .
- the channel-shaped frame member 212 is identical to the channel-shaped frame member 132 and the rectangular frame assemblies which form the top of the environmental enclosure (not shown) may be identical to the rectangular frame assemblies 124 described above.
- the top channel-shaped frame member 132 is attached to the channel-shaped frame member 212 by an L-shaped connector plate 214 which is received against the first side wall 138 of the channel-shaped frame members 132 and 212 and secured in place by machine screws 214 or the like as shown in FIG. 17 .
- the channel-shaped frame member 212 may be identical to the channel-shaped frame members 132 and thus the components of the channel-shaped frame member 212 are numbered the same as the components of the channel-shaped frame member 132 in FIG. 17 .
- the machine screws 214 are received through the integral internal channels 155 formed by the opposed walls 158 and 160 and the flexible film 128 secured by end caps 164 are located on the inside of the environmental enclosure.
- the assembly of the environmental enclosure is similar to the environmental enclosure 20 shown in FIGS. 1 to 7 . That is, the rectangular frame assemblies 124 may be first assembled, as described above, and the rectangular frame members may then be covered with a flexible, preferably transparent film 128 and secured by end caps 164 . As described above, the flexible film 128 is then preferably heated to stretch the film over the rectangular frame assemblies 124 and the flexible film 128 may be easily replaced if damaged following assembly of the environmental enclosure.
- the embodiment of the environmental enclosure 120 and channel-shaped frame members 132 , 202 and 212 have several advantages over the environmental enclosure 20 and channel-shaped frame members 26 described above, including reduced costs of manufacturing and assembly and increased rigidity. However, both embodiments provide important advantages over the prior art, including reduced weight, ease of assembly and easy replacement of the flexible film.
- the channel-shaped frame members may be formed from extruded aluminum making the environmental enclosure or clean tunnel 20 , 120 light in weight and relatively rigid, but having sufficient flexibility for ease of assembly.
- the environmental enclosure or clean tunnel may be fixed directly to the floor, such as a concrete floor or steel platform using power actuated fastening systems, such as pins, anchor bolts or the like.
- the upper rectangular frame assemblies may also be supported by the building structure, using brackets, cables or the like.
- the opening to the channel-shaped portion or channel-shaped members may be configured to receive other end caps as disclosed, for example, in the prior art.
- any suitable fasteners may be utilized to interconnect the adjacent the channel-shaped frame members or the frame members to the connector plates described above., including machine screws, bolts or the like
- the frame assemblies shown in FIGS. 1 to 7 may be square, as shown, or rectangular with transverse bracing elements as disclosed in FIGS. 8 to 17 .
- the environmental enclosure or clean tunnel of this invention may have any configuration depending upon the application. That is, the enclosure may include end walls at various locations and venting may be provided, as required.
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Abstract
Description
- This application claims priority to Provisional Patent Application Ser. No. 60/579,410 filed in the U.S. Patent and Trademark Office on Jun. 14, 2004.
- This invention relates to an environmental or contaminant shield or enclosure which prevents airborne contaminants from contacting a part received within or transmitted through the environmental or contaminant enclosure. More particularly, this invention relates to a frame assembly for an environmental or contaminant shield or enclosure and the shield or enclosure.
- Environmental or contaminant shields or enclosures, commonly referred to as “clean tunnels,” are utilized by many industries to prevent airborne contaminants from contacting a part received within or transmitted through the environmental or contaminant shield or enclosure. Such enclosures are used, for example, in an automotive paint facility, wherein the vehicle body is conveyed through clean tunnels between the several steps performed in the paint shop including, for example, sanding, tack-off (typically performed by feather dusters), paint booths and ovens to prevent airborne contaminants, including particulate and waterborne contaminants, from contacting the vehicle body following sanding, cleaning, tack-off and painting. A typical automotive paint facility may include over a mile of clean tunnels. As will be understood, however, other manufacturing and assembly facilities also use clean tunnels or enclosures during assembly or manufacture, including downtime. A typical clean tunnel or enclosure includes a frame assembly comprised of like channel-shaped frame members formed from sheet metal, typically steel, each having an open end, including an end or bottom wall and opposed side walls having opposed inwardly projecting end portions, wherein an end cap is received in the opening end of the channel-shaped frame members which secures a flexible film stretched over the frame members forming the clean tunnel as disclosed, for example, in U.S. Pat. Nos. 4,860,778 and 5,906,078.
- As disclosed in such patents, the like channel-shaped frame members are then interconnected in end to end relation into a rectangular frame and the flexible sheet is stretched over the frame members and the rectangular frame members are then interconnected in side to side or end to end relation to form a U-shape clean tunnel or enclosure, preventing airborne contaminants from contacting a part received in the clean tunnel or enclosure. In a typical application, the frame members are first interconnected in end to end relation to form a rectangular frame, a flexible film is stretched over the rectangular frame and secured by end caps and the rectangular frame members with the flexible film are then interconnected in end to end and side to side relation with fasteners or clips. However, because the open ends of the channel-shaped frame members are closed by the end caps which secure the flexible film, assembly of the rectangular frame members with the end caps and flexible film require special clips or fasteners which penetrate the channel-shaped frame members making assembly of the frame members difficult, requiring special tools or parts and potentially reducing the structural integrity of the frame assembly.
- It would also be desirable to easily remove and replace damaged flexible film after assembly, which comprises a majority of the surface area of the clean tunnel or enclosure, without special tools and to form the frame members from extruded aluminum to form a light weight, more rigid rugged construction. The environmental enclosure and frame assembly of this invention solves the problems associated with the prior art described above, including frame members which may be easily and securely assembled and wherein the flexible film may be easily assembled on the frame members or removed and replaced if damaged.
- The frame assembly for an environmental enclosure of this invention includes a plurality of interconnected channel-shaped frame members, wherein each of the frame members includes a first end wall, opposed spaced side walls extending generally perpendicular to and integral with the first end wall and an opening opposite the first end wall adapted to receive and retain an end cap for retaining a film over the frame assembly. As thus far described, the channel-shaped frame members may be generally similar to the frame members disclosed in the above-referenced U.S. patents. However, the frame members of this invention further include an integral internal retainer channel within the channel-shaped frame members including a retainer wall integral with and extending generally perpendicular to one of the side walls, spaced from the end wall, for receiving a connector element interconnecting the channel-shaped frame members into a rectangular frame or for interconnecting abutting transverse frame members for braces or the like. In a preferred embodiment, the internal retainer wall is generally L-shaped, including a first portion integral with and extending generally perpendicular to the side wall and an end portion extending toward the first end wall of the channel-shaped frame member and in the disclosed embodiment, the first end wall further includes an internal retainer wall extending toward the end portion of the generally L-shaped retainer wall, forming an integral internal channel for receiving a retainer element as described. In a preferred embodiment, the channel-shaped frame members are formed from extruded aluminum, forming a light weight rigid construction.
- In one of the disclosed embodiments of the channel-shaped members, the first side wall which includes the internal retainer channel, has a second end wall extending from and integral with the first side wall and the opening which receives the end cap is adjacent the second side wall and the opening is defined by parallel enlarged bead-shaped portions to receive and retain the end cap which retains a film overlying the frame assembly. In the other disclosed embodiments, the end portions of the side walls are U or hook-shaped each having an enlarged bead-shaped portion extending toward the first end wall.
- In one of the preferred embodiments of the frame assembly of this invention, the channel-shaped frame members further include an L-shaped retainer portion including an end wall portion integral with a side wall, preferably a side wall opposite the integral internal channel described above, extending parallel to the first end wall and preferably aligned with the first end wall, and an end portion integral with and extending generally perpendicular to the end wall portion of the retainer portion forming a channel-shaped retainer or connector portion for interconnecting adjacent channel-shaped members in side to side relation, wherein the channel-shaped frame members of the frame assembly include a first plurality of channel-shaped members each having a generally L-shaped connector portion extending from one side wall and a second plurality of channel-shaped members which are a mirror image of the first channel-shaped members, and wherein the L-shaped retainer portions are aligned in side to side abutting relation and a fastener interconnects the first and second channel-shaped members.
- The channel-shaped frame members of this invention are first assembled into rectangular frame assemblies, wherein the ends are preferably mitered or cut at a 45 degree angle and an L-shaped connector element having a first leg portion is received in the internal retainer channel of one frame member and a second leg portion is received in an internal channel of a perpendicular second channel-shaped frame member forming a rectangular frame assembly. The rectangular frame assembly is then covered with a thin, preferably transparent film and secured by end caps, such that each rectangular frame assembly is covered by a thin transparent film. In the disclosed embodiment of the frame assembly of this invention having a generally L-shaped retainer portion, the rectangular frame assemblies are then secured in side to side relation by a fastener, such as a clip, rivet or the like. In a preferred alternative embodiment, the frame assemblies are interconnected in side to side relation by a U-shaped retainer member having end portions received around the adjacent channel-shaped frame members and secured by suitable fasteners, such as screws, bolts, or the like. The frame assemblies may be rectangular or square. In one preferred embodiment, a rectangular frame assembly is first formed having a height equal to the desired height of the environmental enclosure and the rectangular frame assemblies include cross members having end portions secured to the rectangular frame assembly by U-shaped retainer members received within the cross members having slots received in the opposed end portions of the internal retainer channel, forming a light weight rigid assembly. The preferred alternative embodiment of the frame assembly has the advantage that the frame assembly is more rigid and does not require mirror image channel-shaped frame members and is thus less expensive to manufacture and assemble.
- In a preferred embodiment of the frame assembly of this invention, the channel-shaped frame members are extruded, preferably extruded aluminum, forming a rigid lightweight frame assembly which is easily assembled or disassembled, as required. Further, the thin flexible film may be easily secured to or replaced on the frame assemblies by end caps which, in a preferred embodiment, includes a planar end portion and projecting generally parallel outwardly bowed legs which are received between the parallel enlarged bead-shaped portions defining the opening to the channel-shaped frame members, securely retaining the flexible film.
- As will be understood, the disclosed embodiments of the frame assembly and channel-shaped frame members is provided for illustrative purposes only and various modifications may be made to the frame assembly and channel-shaped frame members within the purview of the appended claims as described further below.
-
FIG. 1 is a side perspective view of one embodiment of an environmental enclosure of this invention; -
FIG. 2 is a partial exploded view of the ends of two frame members, a connector channel, end caps and flexible film illustrating the assembly of the frame members shown inFIG. 1 in end to end relation; -
FIG. 3 is a side view of a rectangular frame assembly, which is a component of the environmental enclosure shown inFIG. 1 ; -
FIG. 4 is a side cross-sectional view ofFIG. 3 in the direction of view arrows 4-4 with the end cap and film; -
FIG. 5 is a partially exploded top perspective view of two rectangular frame assemblies shown inFIG. 1 illustrating one means of interconnecting the frame assemblies further illustrated inFIG. 6 ; -
FIG. 6 is an end cross-sectional view of two frame members shown inFIG. 1 interconnected in side to side relation; -
FIG. 7 is a side cross-sectional view similar toFIG. 5 with an alternative fastener interconnecting the frame members; -
FIG. 8 is a partial side view of an alternative embodiment of the environmental enclosure of this invention; -
FIG. 9 is a partial side cross-sectional view ofFIG. 8 in the encircled area 9; -
FIG. 10 is a cross-sectional view ofFIG. 9 , in the direction of view arrows 10-10; -
FIG. 11 is a perspective view of one embodiment of the corner connector element illustrated inFIGS. 9 and 10 ; -
FIG. 12 is a partial side cross-sectional view ofFIG. 8 in the direction of view arrows 12-12; -
FIG. 13 is an end cross-sectional view ofFIG. 8 in the direction of view arrows 13-13; -
FIG. 14 is a side cross-sectional view ofFIG. 8 in theencircled area 14; -
FIG. 15 is as end cross-sectional view ofFIG. 14 in the direction of view arrows 15-15; -
FIG. 16 is a perspective view of the connector element shown inFIGS. 14 and 15 ; and -
FIG. 17 is an end cross-sectional view ofFIG. 8 in the direction of view arrows 17-17. - As will be understood, the embodiments of the frame assembly and environmental enclosure of this invention disclosed in the figures are for illustrative purposes only and various modifications may be made to the frame assembly and environmental enclosure of this invention with the purview of the appended claims as described further below.
- The embodiment of the environmental enclosure or
clean tunnel 20 shown inFIG. 1 and FIGS. 2 to 7 includes a plurality of interconnectedrectangular frame assemblies 24 interconnected in side to side relationship, each including fourframe members flexible film 28 preferably stretched between theframe members flexible film 28 may be formed of any suitable material, including a transparent polymeric film, such as polyethylene, having a thickness of for example about 0.18 mm and preferably formed of a polymer, such as polyethylene or a polyethylene resin which shrinks upon heating, such that theflexible film 28 may be stretched between theframe members clean tunnel 20 will depend upon the application of the environmental enclosure. For example, theenvironmental enclosure 20 may be in the form of a clean tunnel, as shown inFIG. 1 , for enclosing a conveyor (not shown) for conveying a vehicle body (not shown) between the various work stations in a paint shop and may includeaccess doors 30. Alternatively, theenvironmental enclosure 20 may be in the form of a housing having closed ends (not shown) for storage of manufactured parts in a manufacturing facility to prevent contamination of the parts prior to subsequent manufacturing operations. The disclosed embodiment of theenvironmental enclosure 20 and frame assembly of this invention may be sufficiently rigid to be a free standing structure supported by the floor or may include additional reinforcement (not shown inFIG. 1 ) again depending upon the application. -
FIG. 4 is a cross-section of one preferred embodiment of a channel-shaped frame member 26 which includes a channel-shaped portion 32 and anintegral connector portion 34. The channel-shaped portion 32 includes a firstend wall portion 36, afirst side wall 38 extending generally perpendicular to and integral with the firstend wall portion 36 and a secondside wall portion 40 spaced from thefirst side wall 38 extending perpendicular to and integral with the firstend wall portion 36 forming a channel-shaped portion 32 having anopening 39 opposite thefirst end wall 36 as shown inFIG. 4 . In a preferred embodiment, thefirst side wall 38 includes anend portion 42 at or adjacent theopening 39 at the open end of the channel-shapedportion 32 extending toward thesecond side wall 40 and thesecond side wall 40 includes anend portion 44 extending toward thefirst side wall 38 for receiving and retaining anend cap 64 as described below. In one preferred embodiment, thesecond side wall 40 also includes asecond end portion 46 extending away from thefirst end portion 44 and overlying theend wall 48 of theconnector portion 34. The disclosed embodiment of theconnector portion 34 includes anend wall portion 48 which is integral with thesecond side wall 40 and generally aligned or continuous with thefirst wall portion 36. Theconnector portion 34 further includes aleg portion 50 which is spaced from thesecond side wall 40 and preferably extends generally perpendicular to and is integral with theend wall portion 48 of theconnector portion 34 as shown inFIG. 4 . In a preferred embodiment, theleg portion 50 has a shorter length than theside walls portion 32. In a preferred embodiment of theframe members 26, theend portions cap retainer portion 52 which are generally parallel to theside walls first end wall 36 and theend wall 48 of the connector portion, respectively, having an enlarged bead-shaped cross-section and an arcuate outer exterior surface to receive and retain end caps as described below. - As set forth below, the
frame members 26 are preferably interconnected in end to end relation to formrectangular frame assemblies 24 as shown inFIGS. 1 and 3 . In a preferred embodiment, the channel-shapedportion 32 of each of theframe members 26 includes an internalintegral channel 55 configured to receivecorner connectors 54, also shown inFIG. 2 . In a preferred embodiment, theinternal channels 55 include a generally L-shapedportion 56 integral with thefirst side wall 38 having anend portion 58 extending toward thefirst bottom portion 36 and theinternal channel 55 may include asecond wall portion 60 which extends generally perpendicular to and is integral with the firstbottom wall portion 36 generally aligned with theend portion 58 of the generally L-shapedweb portion 56, forming an integralinternal channel 55 in the channel-shapedportion 32 having an opening opposite thesecond side wall 40 as best shown inFIG. 4 . The generally L-shapedweb portion 56 may also be arcuate or J-shaped to receive an arcuatecorner connector channel 54. As discussed further below, the frame members 26 (and 26A described below) may be formed of aluminum and extruded forming a light weight relatively rigid structure at reduced cost. As shown inFIG. 3 , the ends of theframe members 26 may be mitered or cut at a 45 degree angle, such that the abutting ends interfit as shown inFIG. 3 to form therectangular frame assemblies 24 as best shown inFIG. 2 . Thecorner connectors 54 in this embodiment are preferably L-shaped havingleg portions 62 which are telescopically received in theinternal channels 55 in the channel-shapedportions 32 of theframe members 26 to complete the assembly of therectangular frame assemblies 24. Theflexible film 28 may then be received over the inwardly projectingend portions side walls first end cap 64 as shown inFIGS. 2 and 4 . Alternatively, as described below, the entire frame assembly may be assembled before application of theflexible film 28 andend caps 64. - In one preferred embodiment, the first end caps 64 include a
planar end portion 66 and projecting generally parallel outwardly bowedlegs 68. As best shown inFIG. 4 , thelegs 68 may include an arcuateouter surface 70 and the distal ends 70 of theleg portions 68 may be bowed slightly outwardly to interfit with the arcuatecap retainer portions 52 of theend portions side walls flexible film 28. The first end caps 64 may be formed from an extruded polymer, such as polyethylene or polypropylene, and theflexible film 28 is preferably formed of a heat shrinkable polymer, such as polyethylene, and theflexible film 28 is then preferably heated following assembly to stretch thefilm 28 over therectangular frame assemblies - Once the
rectangular frame assemblies rectangular frame members connector portions 34, as now described, with reference toFIGS. 6 and 7 . First, however, it should be noted fromFIGS. 6 and 7 that the frame members includeframe members 26 as just described andframe members 26A which are substantially a mirror image of theframe members 26, but may be otherwise identical. That is, theframe members 26A may be identical to theframe members 26 except that the channel-shapedconnector portion 32A is on the right inFIGS. 6 and 7 and theconnector portion 34A is on the left inFIGS. 6 and 7 , whereas the channel-shapedportion 32 offrame member 26 is on the left inFIGS. 6 and 7 and theconnector portion 34 offrame member 26 is on the right inFIGS. 6 and 7 . Thus, no further description of theframe members 26A is required for a complete understanding and the elements of theframe members 26A are numbered the same as theframe members 26 with the suffix “A.” Therectangular frame assemblies frame members FIGS. 6 and 7 , with theleg portions connector portions - In an embodiment of the frame assembly shown in
FIGS. 5 and 6 , therectangular frame members 24 are retained by aU-shaped clip 74 havingparallel leg portions 76 received over theleg portions frame members rectangular frame members FIG. 6 , may thus be assembled without tools or skilled labor. As will now be understood, theleg portions side walls connector portions frame members FIG. 5 also illustrates the assembly of tworectangular frame members U-shaped clip 74, wherein theleg portions U-shaped clip 74 is then received over theabutting leg portions FIG. 7 illustrates an alternative means of securing theleg portions conventional rivets 78 received throughopenings 80 in theabutting leg portions FIG. 7 is otherwise identical to the assembly shown inFIG. 6 and thus no further description is required. - The embodiment of the frame assemblies shown in
FIGS. 6 and 7 may then be finished and sealed with second end caps 82, which are identical to thefirst end cap 64, except for size. That is, the second end caps 82 include aplanar end portion 84 and generally parallel outwardly bowedlegs 86 which are received between the opposedsecond end portions second side walls FIGS. 5, 6 and 7. Although the second end caps 82 are optional, they prevent the accumulation of dust or debris in theconnector portions - It is important to note that the embodiment of the frame assembly of this invention shown in
FIG. 1 and the frame assemblies described below may be assembled before application of thefilm 28 which would be difficult, if not impossible, with the frame assemblies for environmental enclosures disclosed in the above referenced prior art. That is, the channel-shapedframe members 26 may first be assembled intorectangular frame assemblies 24, as described above, and the rectangular frame assemblies may then be assembled into an enclosure, such as theclean tunnel 20 shown inFIG. 1 , before application of theflexible film 28. This is an important advantage over the prior art because theflexible film 28 may be damaged during assembly. Following assembly of therectangular frame assemblies flexible film 28 is cut to size and applied over theopposed end portions first end cap 64 and preferably heated to stretch the film in place over therectangular frame assemblies flexible film 28 is transparent because this method of assembly provides a clear view of the interior of theenvironmental enclosure 20. Further, the clear film may be damaged or coated with debris during use and the configuration of theframe members flexible film 28 may be easily replaced. It is also important to note that the frame assemblies of this invention may also be easily disassembled and changed or stored without special tools, particularly where the rectangular frame assemblies are secured in side to side relation with a clip, such as shown at 74 inFIG. 6 . - The alternative preferred embodiment of the environmental enclosure or
clean tunnel 120 shown inFIG. 8 also includes a plurality ofinterconnected frame assemblies 124 interconnected in side to side relation as described below and therectangular frame members 124 are covered with aflexible film 128 which is preferably stretched over the frame assemblies as described above. However, in this embodiment of theenvironmental enclosure 120, therectangular frame members 124 preferably have a height equal to the desired height of the environmental enclosure and may includecross members 122 for rigidity as described below. As set forth above, the shape or configuration of theenvironmental enclosure 20 will depend upon the application of the environmental enclosure. The embodiment of therectangular frame assemblies 124 shown inFIG. 8 are formed from a plurality of channel-shapedframe members 132 best shown in cross-section inFIG. 10 . - As shown in
FIG. 10 , this embodiment of the channel-shapedmembers 132 each include afirst end wall 136 and opposed first andsecond side walls first end wall 136. The channel-shapedmembers 132 further include anopening 139 opposite thefirst end wall 136 for receipt of anend cap 164 as described above. In this embodiment, however, the end portion orsecond end wall 142 of theside wall 138 opposite thefirst end wall 136 extends to theopening 139, such that theopening 139 is spaced from the integralinternal retainer channel 155 formed by the generally L-shapedwall 156 integral with thefirst side wall 138 and thewall 160 integral with thefirst end wall 136. As described above, theend portion 158 of the L-shapedinternal wall 156 preferably extends toward thefirst end wall 136 and theend wall 136 further includes an integralinternal wall 160 which extends toward theend portion 158, forming an integralinternal channel 155 for receipt of aconnector element 154 as described below. As also stated above, the L-shapedwall 156 may also be arcuate. In this embodiment of the channel-shapedframe members 132, theopening 139 opposite thefirst end wall 136 includes parallel enlarged bead-shapedportions portion 152 at the end of thesecond end wall 142 extends toward thefirst end wall 136 and the enlarged bead-shapedportion 153 at the distal end of thesecond side wall 140 extends inwardly from thesecond side wall 140 as shown inFIG. 10 . As described above, a preferred embodiment of theend cap 164 includes aplanar portion 166 and generally parallel outwardly bowedleg portions 168 having anouter surface 170 and bowedend portions 172 which are securely retained between the parallel bead-shapedend portions flexible film 128. As will be noted, the elements of the channel-shapedframe members 132 are numbered in the same sequence as the channel-shapedframe members 32 for ease of understanding. - As described above, the
rectangular frame assemblies 124 may be formed by mitering the ends of the channel-shapedframe members 132 at a 45 degree angle as shown inFIG. 9 and theconnector element 154 is L-shaped, as best shown inFIG. 11 havingperpendicular end portions 155 preferably including a plurality ofteeth 157 outwardly inclined from the distal ends in a “Christmas tree” configuration to securely retain theleg portions 155 in the integralinternal channels 155 formed by the L-shapedwall 156 integral with thefirst side wall 138 and anopposed wall 160 integral with thefirst end wall 136. The L-shapedconnector element 154 may be an aluminum extrusion. As will be understood from the above description of the channel-shapedframe members 132, this embodiment of the frame members does not include an L-shapedintegral connector portion 34, but this embodiment of the channel-shapedframe members 32 does not require a mirror image frame member as described above with reference to FIGS. 5 to 7 and thus results in less cost and a more rigid construction as described below. -
FIG. 12 illustrates a suitable tie down of theenvironmental enclosure 120 to thefloor 180, such as the concrete floor of a manufacturing facility. In the disclosed embodiment shown inFIG. 12 , an L-shaped tie down plate having ahorizontal portion 182 is affixed to thefloor 180 by a conventionalconcrete anchor bolt 184 having anut 186. Thevertical leg 188 is attached to thefirst end wall 136 of the channel-shapedmember 132 by aconventional machine screw 190 or the like, forming a rigid support for theenvironmental enclosure 120 shown inFIG. 8 . -
FIG. 13 illustrates a suitable interconnection between adjacent channel-shapedframe members 132 in side to side abutting relation with aU-shaped connector plate 192. As shown inFIG. 13 , theU-shaped connector plate 192 includes a planarcentral portion 194 having a width slightly greater than the combined width of thefirst end walls 136 of two abutting channel-shapedframe members 132 andtransverse leg portions 196 which receive thesecond side walls 140 of the channel-shapedframe members 132 and thecentral portion 194 is affixed to thefirst end wall 136 bymachine screws 198 or the like. -
FIGS. 14 and 15 illustrate a suitable connection between the vertical channel-shapedmembers 132 and thecross members 122 shown inFIG. 8 . In a preferred embodiment, thecross members 122 are identical to the channel-shapedframe members 132 and thehorizontal cross members 122 are attached to the vertical channel-shapedframe members 132 by aU-shaped connector plate 200 best shown inFIG. 16 . Theconnector plate 200 includes a planarcentral portion 202 having opposedtransverse slots 204 adjacent to but spaced from one of theperpendicular leg portions 206. As shown inFIG. 14 , thecentral portion 202 of theU-shaped connector plate 200 is attached to thefirst end wall 136 of the vertical channel-shapedframe members 132 bymachine screws 208 or the like. Thetransverse leg portions 206 of theU-shaped connector plate 200 are then received within the channel-shapedtransverse brace member 122 and secured bymachine screws 210. In the preferred embodiment, theleg portion 158 of the L-shaped internal channel portion is received in oneslot 204 and the opposedinternal wall 160 is received in the opposed slot forming a very rigid construction as shown inFIG. 15 . -
FIG. 17 illustrates a suitable interconnection between the toptransverse frame member 132 of therectangular frame assembly 124 and a channel-shapedframe member 212 of a rectangular frame assembly which forms the top of theenvironmental enclosure 120 generally as shown inFIG. 1 . In a preferred embodiment, the channel-shapedframe member 212 is identical to the channel-shapedframe member 132 and the rectangular frame assemblies which form the top of the environmental enclosure (not shown) may be identical to therectangular frame assemblies 124 described above. In the disclosed embodiment, the top channel-shapedframe member 132 is attached to the channel-shapedframe member 212 by an L-shapedconnector plate 214 which is received against thefirst side wall 138 of the channel-shapedframe members machine screws 214 or the like as shown inFIG. 17 . As set forth above, the channel-shapedframe member 212 may be identical to the channel-shapedframe members 132 and thus the components of the channel-shapedframe member 212 are numbered the same as the components of the channel-shapedframe member 132 inFIG. 17 . As shown inFIG. 17 , themachine screws 214 are received through the integralinternal channels 155 formed by theopposed walls flexible film 128 secured byend caps 164 are located on the inside of the environmental enclosure. - As will be understood from the above description of the preferred alternative embodiment of the
environmental enclosure 120 shown in FIGS. 8 to 17, the assembly of the environmental enclosure is similar to theenvironmental enclosure 20 shown in FIGS. 1 to 7. That is, therectangular frame assemblies 124 may be first assembled, as described above, and the rectangular frame members may then be covered with a flexible, preferablytransparent film 128 and secured byend caps 164. As described above, theflexible film 128 is then preferably heated to stretch the film over therectangular frame assemblies 124 and theflexible film 128 may be easily replaced if damaged following assembly of the environmental enclosure. As set forth above, the embodiment of theenvironmental enclosure 120 and channel-shapedframe members environmental enclosure 20 and channel-shapedframe members 26 described above, including reduced costs of manufacturing and assembly and increased rigidity. However, both embodiments provide important advantages over the prior art, including reduced weight, ease of assembly and easy replacement of the flexible film. As set forth above, the channel-shaped frame members may be formed from extruded aluminum making the environmental enclosure orclean tunnel - As will be understood from the above description of the preferred embodiments of the frame assemblies and environmental enclosures of this invention, various modifications may be made within the purview of the appended claims. For example, the opening to the channel-shaped portion or channel-shaped members may be configured to receive other end caps as disclosed, for example, in the prior art. Further, any suitable fasteners may be utilized to interconnect the adjacent the channel-shaped frame members or the frame members to the connector plates described above., including machine screws, bolts or the like The frame assemblies shown in FIGS. 1 to 7 may be square, as shown, or rectangular with transverse bracing elements as disclosed in FIGS. 8 to 17. Finally, as described above, the environmental enclosure or clean tunnel of this invention may have any configuration depending upon the application. That is, the enclosure may include end walls at various locations and venting may be provided, as required. Having described alternative embodiments of the environmental enclosure, frame assemblies and channel-shaped frame members of this invention, the invention is now claimed as follows.
Claims (32)
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060272277A1 (en) * | 2005-04-08 | 2006-12-07 | Timko Williams J | Systems and methods for installing panels |
US20090138935A1 (en) * | 2007-06-25 | 2009-05-28 | Kabushiki Kaisha Toshiba | Apparatus and Method of Receiving Data |
US20090253360A1 (en) * | 2008-04-07 | 2009-10-08 | Craig Allen Tafoya | Portable Ventilation Unit |
WO2010060885A1 (en) * | 2008-11-29 | 2010-06-03 | Baumgaertner Martin | Component for the paneling or erection of buildings |
US8707648B2 (en) | 2005-04-08 | 2014-04-29 | Fry Reglet Corporation | Retainer and panel with insert for installing wall covering panels |
JP2017036614A (en) * | 2015-08-11 | 2017-02-16 | 株式会社Lixil | Installation structure of side frame and construction method of side frame |
US20180313074A1 (en) * | 2017-04-28 | 2018-11-01 | Big 6, LLP | Vault for active shooters and tornadoes |
WO2019013896A1 (en) * | 2017-07-12 | 2019-01-17 | Dirtt Environmental Solutions, Inc. | Wall seal |
CN112645716A (en) * | 2020-12-22 | 2021-04-13 | 西安鑫垚陶瓷复合材料有限公司 | Deposition sizing tool and method for ceramic matrix composite part |
US10980191B2 (en) | 2017-08-15 | 2021-04-20 | Kathleen Lysak | Deer proof garden enclosure and method of making |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9157249B2 (en) | 2013-03-15 | 2015-10-13 | Stuart Charles Segall | Relocatable habitat unit |
US8677698B2 (en) * | 2008-03-06 | 2014-03-25 | Stuart C. Segall | Relocatable habitat unit |
US9016002B2 (en) | 2008-03-06 | 2015-04-28 | Stuart Charles Segall | Relocatable habitat unit having interchangeable panels |
DE202008015851U1 (en) | 2008-11-29 | 2010-04-15 | Baumgärtner, Martin, Dipl.-Ing. (FH) | Component for cladding or construction of buildings |
Citations (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2104473A (en) * | 1935-08-20 | 1938-01-04 | Oliver United Filters Inc | Filter |
US2567743A (en) * | 1948-05-19 | 1951-09-11 | Doyle | Holder for screen or other fabrics |
US2711181A (en) * | 1951-05-01 | 1955-06-21 | Spheric Structures Inc | Spherical structure |
US2757677A (en) * | 1952-07-22 | 1956-08-07 | Bernard L Denn | Tent frame |
US2828757A (en) * | 1956-07-17 | 1958-04-01 | Tepee Trail Inc | Collapsible passageway |
US2905281A (en) * | 1951-08-02 | 1959-09-22 | Alumatic Corp Of America | Porch or garden house enclosure |
US3004542A (en) * | 1959-10-01 | 1961-10-17 | Allen M Moody | Frame type quadranted shelter |
US3052291A (en) * | 1959-07-20 | 1962-09-04 | Howard L Fellers | Knockdown building |
US3155149A (en) * | 1962-01-30 | 1964-11-03 | Kirsch Co | Structural device |
US3343324A (en) * | 1964-03-24 | 1967-09-26 | Gordon William | Underwater structural unit |
US3375831A (en) * | 1966-07-13 | 1968-04-02 | Serbus George | Plastic covering structure |
US3788335A (en) * | 1971-11-09 | 1974-01-29 | Space Age Ind Inc | Anchor means for portable building structure |
US3909994A (en) * | 1974-04-03 | 1975-10-07 | Temcor | Dome construction |
US4057941A (en) * | 1975-12-19 | 1977-11-15 | Airflow Aluminum Awning Company | Modular green house construction |
US4091584A (en) * | 1977-02-09 | 1978-05-30 | Brown Ralph E | Small building structure |
US4121604A (en) * | 1977-06-17 | 1978-10-24 | Irvin Industries Inc. | Rigid frame structure with tensioned membrane cladding |
US4146997A (en) * | 1973-09-20 | 1979-04-03 | M. Ted Raptes | Domical-type structure |
US4189880A (en) * | 1978-06-16 | 1980-02-26 | Gene Ballin | Combination mounting frame and film for a window |
US4441290A (en) * | 1979-02-22 | 1984-04-10 | Hartwig-Hartoglass, Inc. | Glazing fastener for mounting either rigid or flexible storm windows |
US4631882A (en) * | 1985-02-26 | 1986-12-30 | Sease R Gregg | Molding strips and assembly thereof for mounting a flexible covering onto a support surface |
US5044131A (en) * | 1990-05-18 | 1991-09-03 | Fisher Larry M | Fabric awning assembly and divider bead for use therein |
US5076033A (en) * | 1990-04-03 | 1991-12-31 | Patsy Jr Glorio J | Method and apparatus for connecting fabric frame structure elements |
US5086606A (en) * | 1991-02-20 | 1992-02-11 | Krueger International, Inc. | Office panel partition and frame therefore |
US5224306A (en) * | 1991-11-13 | 1993-07-06 | Gallagher-Kaiser Corporation | Enclosure assembly |
US5545488A (en) * | 1994-02-14 | 1996-08-13 | Awnex, Incorporated | Self-stabilizing extrusion for closure assemblies |
US5596843A (en) * | 1995-02-27 | 1997-01-28 | Watson; Robert L. | Rigid structural members and structures for buildings and retaining means for securing sheets thereto |
US5803146A (en) * | 1994-05-20 | 1998-09-08 | Boon; Karel Willem | Modular partition system |
US5906078A (en) * | 1996-10-09 | 1999-05-25 | Gallagher-Kaiser Corporation | Retaining strip for sheet covered enclosures |
US6164364A (en) * | 1999-06-02 | 2000-12-26 | Morris; Milton A. | Track assembly for supporting fabrics |
US6192643B1 (en) * | 1999-01-14 | 2001-02-27 | Yigel Zadok | Modular pool enclosure system having aesthetic appeal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4860778A (en) * | 1988-03-04 | 1989-08-29 | Venderbush Industrial Corporation | Contaminant shield and method of constructing same |
-
2004
- 2004-09-30 US US10/955,388 patent/US20060000177A1/en not_active Abandoned
- 2004-12-02 EP EP04812763A patent/EP1774115A1/en not_active Withdrawn
- 2004-12-02 WO PCT/US2004/040320 patent/WO2006001824A1/en active Application Filing
Patent Citations (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2104473A (en) * | 1935-08-20 | 1938-01-04 | Oliver United Filters Inc | Filter |
US2567743A (en) * | 1948-05-19 | 1951-09-11 | Doyle | Holder for screen or other fabrics |
US2711181A (en) * | 1951-05-01 | 1955-06-21 | Spheric Structures Inc | Spherical structure |
US2905281A (en) * | 1951-08-02 | 1959-09-22 | Alumatic Corp Of America | Porch or garden house enclosure |
US2757677A (en) * | 1952-07-22 | 1956-08-07 | Bernard L Denn | Tent frame |
US2828757A (en) * | 1956-07-17 | 1958-04-01 | Tepee Trail Inc | Collapsible passageway |
US3052291A (en) * | 1959-07-20 | 1962-09-04 | Howard L Fellers | Knockdown building |
US3004542A (en) * | 1959-10-01 | 1961-10-17 | Allen M Moody | Frame type quadranted shelter |
US3155149A (en) * | 1962-01-30 | 1964-11-03 | Kirsch Co | Structural device |
US3343324A (en) * | 1964-03-24 | 1967-09-26 | Gordon William | Underwater structural unit |
US3375831A (en) * | 1966-07-13 | 1968-04-02 | Serbus George | Plastic covering structure |
US3788335A (en) * | 1971-11-09 | 1974-01-29 | Space Age Ind Inc | Anchor means for portable building structure |
US4146997A (en) * | 1973-09-20 | 1979-04-03 | M. Ted Raptes | Domical-type structure |
US3909994A (en) * | 1974-04-03 | 1975-10-07 | Temcor | Dome construction |
US4057941A (en) * | 1975-12-19 | 1977-11-15 | Airflow Aluminum Awning Company | Modular green house construction |
US4091584A (en) * | 1977-02-09 | 1978-05-30 | Brown Ralph E | Small building structure |
US4121604A (en) * | 1977-06-17 | 1978-10-24 | Irvin Industries Inc. | Rigid frame structure with tensioned membrane cladding |
US4189880A (en) * | 1978-06-16 | 1980-02-26 | Gene Ballin | Combination mounting frame and film for a window |
US4441290A (en) * | 1979-02-22 | 1984-04-10 | Hartwig-Hartoglass, Inc. | Glazing fastener for mounting either rigid or flexible storm windows |
US4631882A (en) * | 1985-02-26 | 1986-12-30 | Sease R Gregg | Molding strips and assembly thereof for mounting a flexible covering onto a support surface |
US5076033A (en) * | 1990-04-03 | 1991-12-31 | Patsy Jr Glorio J | Method and apparatus for connecting fabric frame structure elements |
US5044131A (en) * | 1990-05-18 | 1991-09-03 | Fisher Larry M | Fabric awning assembly and divider bead for use therein |
US5086606A (en) * | 1991-02-20 | 1992-02-11 | Krueger International, Inc. | Office panel partition and frame therefore |
US5224306A (en) * | 1991-11-13 | 1993-07-06 | Gallagher-Kaiser Corporation | Enclosure assembly |
US5545488A (en) * | 1994-02-14 | 1996-08-13 | Awnex, Incorporated | Self-stabilizing extrusion for closure assemblies |
US5803146A (en) * | 1994-05-20 | 1998-09-08 | Boon; Karel Willem | Modular partition system |
US5596843A (en) * | 1995-02-27 | 1997-01-28 | Watson; Robert L. | Rigid structural members and structures for buildings and retaining means for securing sheets thereto |
US5906078A (en) * | 1996-10-09 | 1999-05-25 | Gallagher-Kaiser Corporation | Retaining strip for sheet covered enclosures |
US6192643B1 (en) * | 1999-01-14 | 2001-02-27 | Yigel Zadok | Modular pool enclosure system having aesthetic appeal |
US6164364A (en) * | 1999-06-02 | 2000-12-26 | Morris; Milton A. | Track assembly for supporting fabrics |
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---|---|---|---|---|
US20060272277A1 (en) * | 2005-04-08 | 2006-12-07 | Timko Williams J | Systems and methods for installing panels |
US7971404B2 (en) * | 2005-04-08 | 2011-07-05 | Fry Reglet Corporation | Systems and methods for installing panels |
US8707648B2 (en) | 2005-04-08 | 2014-04-29 | Fry Reglet Corporation | Retainer and panel with insert for installing wall covering panels |
US20090138935A1 (en) * | 2007-06-25 | 2009-05-28 | Kabushiki Kaisha Toshiba | Apparatus and Method of Receiving Data |
US7945708B2 (en) | 2007-06-25 | 2011-05-17 | Kabushiki Kaisha Toshiba | Apparatus and method of receiving data from audio/video equipment |
US20090253360A1 (en) * | 2008-04-07 | 2009-10-08 | Craig Allen Tafoya | Portable Ventilation Unit |
WO2010060885A1 (en) * | 2008-11-29 | 2010-06-03 | Baumgaertner Martin | Component for the paneling or erection of buildings |
JP2017036614A (en) * | 2015-08-11 | 2017-02-16 | 株式会社Lixil | Installation structure of side frame and construction method of side frame |
US20180313074A1 (en) * | 2017-04-28 | 2018-11-01 | Big 6, LLP | Vault for active shooters and tornadoes |
USD864418S1 (en) * | 2017-04-28 | 2019-10-22 | Big 6, LLP | Vault for active shooters and tornadoes |
US10738459B2 (en) * | 2017-04-28 | 2020-08-11 | Big 6, LLP | Vault for active shooters and tornadoes |
US11384530B2 (en) | 2017-04-28 | 2022-07-12 | Big 6, LLP | Vault for active shooters and tornadoes |
WO2019013896A1 (en) * | 2017-07-12 | 2019-01-17 | Dirtt Environmental Solutions, Inc. | Wall seal |
US11459751B2 (en) * | 2017-07-12 | 2022-10-04 | Dirtt Environmental Solutions Ltd | Wall seal |
US10980191B2 (en) | 2017-08-15 | 2021-04-20 | Kathleen Lysak | Deer proof garden enclosure and method of making |
CN112645716A (en) * | 2020-12-22 | 2021-04-13 | 西安鑫垚陶瓷复合材料有限公司 | Deposition sizing tool and method for ceramic matrix composite part |
Also Published As
Publication number | Publication date |
---|---|
WO2006001824A1 (en) | 2006-01-05 |
EP1774115A1 (en) | 2007-04-18 |
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Owner name: DURR INDUSTRIES, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SALZANO, CLAUDIO VICENTE;TKATCHUK, ROBERTO;KLOBUCAR, JOSEPH M.;AND OTHERS;REEL/FRAME:016084/0428;SIGNING DATES FROM 20041129 TO 20041213 |
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Owner name: DURR SYSTEMS, INC., MICHIGAN Free format text: MERGER;ASSIGNORS:ACCO SYSTEMS, INC.;BEHR SYSTEMS, INC.;DURR ENVIRONMENTAL, INC.;AND OTHERS;REEL/FRAME:016536/0076 Effective date: 20050407 |
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