WO2006036839A2 - Couvercle de protection de grille - Google Patents

Couvercle de protection de grille Download PDF

Info

Publication number
WO2006036839A2
WO2006036839A2 PCT/US2005/034282 US2005034282W WO2006036839A2 WO 2006036839 A2 WO2006036839 A2 WO 2006036839A2 US 2005034282 W US2005034282 W US 2005034282W WO 2006036839 A2 WO2006036839 A2 WO 2006036839A2
Authority
WO
WIPO (PCT)
Prior art keywords
grate
cover
grate cover
grid
top surface
Prior art date
Application number
PCT/US2005/034282
Other languages
English (en)
Other versions
WO2006036839A3 (fr
Inventor
Robert Arlen Bilodeau
Gregg L. Gibson
Original Assignee
Applied Chemical Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Applied Chemical Technologies, Inc. filed Critical Applied Chemical Technologies, Inc.
Publication of WO2006036839A2 publication Critical patent/WO2006036839A2/fr
Publication of WO2006036839A3 publication Critical patent/WO2006036839A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings

Definitions

  • the present invention relates to a grate cover that is particularly well- suited for covering at least part of a floor grate in a paint booth.
  • the grate cover is well-suited for a variety of other applications, including but not limited to those applications described below.
  • One exemplary embodiment of the present invention includes removable grate cover comprising a grid configured to be placed over a floor grate in a paint booth.
  • Another embodiment of the present invention includes a clip for securing a grate cover to a grate.
  • Yet another embodiment of the present invention includes a method of maintaining a paint booth.
  • FIG. 1 depicts a typical paint booth configuration.
  • FIG. 2 depicts a grate cover stacked on another grate cover.
  • FIG. 3 depicts a grate cover partially stacked on another grate cover.
  • FIG. 4 depicts a grate cover stacked on another grate cover.
  • FIG. 5 depicts a grate cover placed over part of a grate
  • FIG. 6 depicts two grate covers placed over part of a grate.
  • FIG. 7 depicts a top view of a swaged grate and cross-sectional end views of a grate cover placed over the grate.
  • the grate cover 2 of the present example comprises a grid 4.
  • the term "grid” shall be read to include any type of pattern, and shall not be read as requiring a "grid” to be comprised of a particular shape or particular shapes.
  • the grid 4 of the present example corresponds to a grid provided by a grate 6, such as a floor grate in a paint booth 8, by way of example only.
  • the grate cover 2 may be used to cover any other suitable grate or grid, including but not limited to press-locked, swage, FRP molded, FRP pultruded, and/or welded rod-type grates. While embodiments are described herein as relating to floor grates in a paint booth, it will be appreciated that the grate cover 2 may be used for grates in any location, including but not limited to ships, oil rigs and refineries, industrial plants, chemical facilities, steel mills and other locations. In addition, the grate cover 2 may be used on any type of grate located anywhere other than a floor, such as walls, ceilings, or parts of machinery, by way of example only.
  • the grid 4 of the grate cover 2 need not correspond directly with the grid of a grate 6.
  • the grid 4 of the grate cover 2 need not be symmetric with the grid of a grate 6.
  • the grid 4 of the present grate cover 2 defines a plurality of grid cells
  • Each grid cell 10 is generally rectangular. In one embodiment, each grid cell 10 is square. However, grid cells 10 may be of any other suitable shape. In addition, each grid cell 10 may comprise a plurality of sub-cells within the grid cell 10. By way of example only, a generally rectangular grid cell 10 may further comprise a plurality of triangular sub-cells.
  • each grid cell 10 comprises four sidewalls 12.
  • the sidewalls 12 extend generally downward from the top surface 14 of the grid 4, and the top surface 14 is shared by a plurality of grid cells 10.
  • the sidewalls 12 may be generally flat, curved, or of any suitable configuration.
  • the top surface 14 of the grid 4 may be substantially flat, rounded, or of any suitable configuration. In one embodiment, the top surface 14 is textured. It will be appreciated that such texturing may provide anti ⁇ skid and/or other properties, particularly where the grate cover 2 is placed over a floor grate 6 in a paint booth 8. Of course, such texturing is optional, and any suitable alternative to texturing may be used.
  • the vertical level of top surface 14 varies, such as by corresponding with varying vertical levels of a grate 6.
  • a grate cover 2 may be configured to fit the grate 6 such that the vertical level of top surface 14 corresponds with these varying vertical levels.
  • the portion of top surface 14 to be positioned adjacent the cross bars is at a lower vertical level than the portion of top surface 14 that is to be positioned adjacent the bearing bars.
  • a grate cover 2 having a top surface 14 with a uniform vertical level may be used to cover such a swaged grate 6.
  • Other variations of top surface 14, grates 6, and relative configurations of grates 6 and grate covers 2 will be apparent to those of ordinary skill in the art.
  • each sidewall 12 when a grate cover 2 is placed over a floor grate 6, each sidewall 12 extends to a distance below the bottom of the grate 6.
  • the sidewalls 12 may extend to any other suitable distance.
  • a grate cover 2 may alternatively have sidewalls 12 that extend to varying distances.
  • latitudinal sidewalls 12 may extend to a different distance than longitudinal sidewalls 12.
  • One or more sidewalls 12 may differ from other sidewalls 12 in any other respect, such as shape, size, and/or configuration.
  • each grid cell 10 of the grate cover 2 terminate into a bottom surface 16, which is integral with respective sidewalls 12, and faces the opening 18 at the top of the corresponding grid cell 10.
  • each grid cell 10 is a "closed cell.”
  • Each bottom surface 16 may be approximately the same size as the opening 18 at the top of the corresponding grid cell 10.
  • the bottom surface 16 may be positioned such that the sidewalls 12 are substantially perpendicular to the bottom surface 16 of the grid cell 10 and the top surface 14 of the grid 4.
  • the bottom surface 16 and corresponding opening 18 may be offset, such that one or more of the sidewalls 12 are not perpendicular to the bottom surface 16 and/or top surface 14.
  • the bottom surface 16 of a grid cell 10 is larger than the corresponding opening 18, such that one or more of the sidewalls 12 is not perpendicular to the bottom surface 16 and/or top surface 14.
  • the bottom surface 16 of a grid cell 10 may be smaller than the corresponding opening 18.
  • Other suitable relative sizing and/or positioning of bottom surfaces 16 and openings 18 will be apparent to those of ordinary skill in the art.
  • each bottom surface 16 may further comprise one or more openings, such as slots or perforations, by way of example only. Where a bottom surface 16 has one or more openings therein, the corresponding grid cell 10 may be described as "partially open.”
  • the bottom surfaces 16 of the grid cells 10 are eliminated altogether, such that each sidewall 12 terminates at an edge.
  • the grid cells 10 may be "open cells.”
  • grate covers 2 may be formed without bottom surfaces 16. It will also be appreciated that, where grate covers 2 are formed with bottom surfaces 16, yet the bottom surfaces 16 are not desired, the bottom surfaces 16 may be removed, in whole or in part, at any suitable time.
  • the bottom surfaces 16 of the grid cells 10 are perforated or die cut, such that a user may remove at least a portion of one or more bottom surfaces from the grate cover 2. It will be appreciated that such perforation or cutting may be done such that a pattern is provided, whereby a user may selectively remove portions of bottom surfaces 16. Still other features may be provided to permit a user to selectively remove all or a portion of one or more bottom surfaces 16, thereby facilitating conversion of a closed grid cell 10 to an open or partially open grid cell 10.
  • each grid cell 10 lacks a bottom surface 16, and each sidewall 12 is sloped, such as the sidewalls shown in FIG. 7 by way of example only.
  • one or more sidewalls 12 may be sloped inward or outward, and sidewalls 12 of the same grid cell 10 may be sloped differently, if at all.
  • one or more sidewalls 12 may further include a gulley 20 or other feature.
  • a grate cover 2 with open grid cells 10 is placed over a grate 6 through which the flow of fluid (e.g., air, liquids, etc.) is of concern, one or more sidewalls 12 may be configured to affect such flow.
  • a grate cover 2 has grid cells 10 that are partially open, one or more sidewalls 12 and/or the bottom surface 16 may be configured to affect the flow of fluid through the grate cover 2.
  • Grid cells 10 may be configured to provide patterned or focused fluid flow or induce other fluid flow effects. Suitable configurations of grid cells 10 for inducing such effects will be apparent to those of ordinary skill in the art. [0030] Still other suitable configurations for grid cells 10 will be apparent to those of ordinary skill in the art.
  • the grate cover 2 is secured to the grate 6 with a plurality of clips.
  • the clips are four-way clips, and are configured to fit on the grate cover 2 at the intersections of the grid 4 of the grate cover 2.
  • the clips may fit around at least a part of the struts of the grid of the grate 6.
  • the clips are disposable.
  • any suitable securing member(s) may be used as an alternative or in addition to clips, such as side abutment(s), adhesive, or magnets by way of example only.
  • grate cover 2 may simply rest on grate 6. Securing the grate cover 2 to the grate is purely optional, and is therefore not required per se. hi one embodiment, residual paint on the grate 6 provides enough tackiness to hold the grate cover 2 in place sufficiently, hi another embodiment, the grate cover 2 is bowed inward before being placed over the grate 6, such that the cover itself "grips" the grate 6, such as by gripping with the sidewalls 12 of the grate cover 2. hi yet another embodiment, the grate cover 2 is bowed outward. Still other suitable alternatives to securing members will be apparent to those of ordinary skill in the art, to the extent that securing members or securing member alternatives are desired.
  • the grate cover 2 and clips of the present example comprise a plastic material.
  • grate cover 2 may be made of any suitable plastic resin, paper, corrugated cardboard, compressed fiber, aluminum, fiber-reinforced polymer, thermoplastics, PET, PVC, EVA, PETG, ABS, an acrylic, polyolefins (such as PE, PP, OPP, TPO, STOP, and the like), urethane, polystyrene, polycarbonate, fiberboard, cellulose, pressed paper, cardboard, fiberglass, sheet molded composite, RIM, nylon, PA, co-polymers of any plastic, wood, compressed fiber, tin, steel, stainless steel, other metals, or any other suitable material or materials.
  • thermoplastic resins useful for the covers can be exemplified by polyolefin resins such as polyethylene (PE), low-density polyethylene (LDPE), high-density polyethylene, ultrahigh molecular weight polyethylene (UHMPE), polypropylene (PP), polymethylpentene (MPX), ethylene-(meth)acrylate ester copolymers, and ethylene-vinyl acetate copolymers (EVA); acrylic-type vinyl resins such as polymethyl methacrylate (PMMA); styrene-type vinyl resins such as polystyrene (PS), high-impact polystyrene (HIPS), acrylonitrile- butadiene-styrene (ABS) copolymers, acrylonitrile-styrene (AS) copolymers, acrylonitrile-acrylic rubber-styrene (AAS) copolymers, and acrylonitrile-ethylene/propylene rubber-sty
  • the clips or other securing members may be made of any suitable material or materials in lieu of plastic, such as metal by way of example only.
  • the grate cover 2 and/or clips may be made using any suitable method, such as stamping, molding (such as injection molding, slush molding, and the like), thermal forming, vacuum forming (e.g., "blisterpacking"), or pieced construction, by way of example only.
  • the grate cover 2 is formed by laying a sheet of plastic over a grate 6, then vacuum forming the sheet of plastic to the grate 6.
  • the grate cover 2 is formed by laying a sheet of plastic over a grate 6, then thermally forming the sheet of plastic to the grate 6. Still other suitable methods for making the grate cover 2 and/or clips will be apparent to those of ordinary skill in the art.
  • the cover and/or clips are cover the grate without substantially inhibiting air flow down through the grate.
  • the grate cover is a plastic composition which, when formed into the desired grate cover, is both essentially static resistant (that is, conductive to static electric charges) as well as otherwise environmentally and safety acceptable for paint spray booth use applications.
  • essentially static resistant that is, conductive to static electric charges
  • polypropylene or a copolymer of propylene with another compatible monomer, usually included for flow enhancement, and preferably also with an anti-static agent is employed, commercially-available granules thereof are utilized and subjected to heat in a closed mold according to conventional procedure.
  • the cover is optionally provided with built-in protuberances in grate cover which lock or clamp the cover to grate cross members and with skirts which extend below the lower edge of the grate blades.
  • the grate cover 2 is made of a plastic material or other suitable material
  • the grate cover 2 may be cut to fit grates of various configurations. Cutting may also be employed, if necessary or otherwise desired, to cause a plurality of grate covers 2 to fit side-by-side properly on a grate 6 that is larger than an individual grate cover 2. Of course, such cutting is optional, and other suitable methods for fitting a plurality of grate covers 2 on a grate 6 will be apparent to those of ordinary skill in the art.
  • grate cover 2 may include adding additives to alter the properties of the grate cover 2.
  • additives may be introduced to affect or effect properties such as conductivity, antistatic, biocidic, ionized charge, color, UV stability, or chemical resistance.
  • the grate cover 2 may additionally or alternatively be treated with an agent or agents to provide tackiness, anti-skid properties, or antimicrobial properties. Brightening, whitening, or coloring treatments may be provided to the grate cover 2.
  • the grate cover 2 may be treated with polytetrafluoroethylene (e.g., TEFLON®), or any suitable detackifier.
  • the grate cover 2 may be treated with one or more rust inhibitors. Still other suitable additives, treatments, and the like, including combinations thereof, will be apparent to those of ordinary skill in the art.
  • the grates can be used in a downdraft paint booth.
  • the grate may further include an overspray filtering system integral with the grates.
  • filters can be used such as those described in U.S. Pat. No. 6,162,270, incorporated herein by reference in its entirety.
  • the filter may be an integral or removable recyclable filter.
  • the grate cover filters will have 95-99% efficiency at removing airborne particulates. Secondary filters may be used after the grate cover filters to remove any final over-spray passing the filters.
  • a user approaches a paint booth 8 and places a grate cover 2 over the floor grate 6 in the booth.
  • the user secures the grate cover 2 to the grate 6 with clips.
  • the user then initiates a painting operation within the booth.
  • the user removes the clips and the grate cover 2, and then disposes of or recycles the same.
  • the user finally places a clean grate cover 2 over the floor grate 6 and secures the same for the next painting operation.
  • the user has thus reduced the need to maintain the floor grate 6 in the paint booth 8, particularly with respect to addressing paint contamination and/or occlusion of the grate 6.
  • this "use” example is merely illustrative, and uses may deviate therefrom substantially.
  • a grate cover 2 may be used to protect a grate 6 from paint, weathering , and/or wear; and/or to add surface treatment to an existing grate 6.
  • a grate cover 2 with closed grid cells 10 may be used to alter air flow in a paint booth and thereby change the "booth balance.” Such use may be useful in providing a temporary fix to a paint booth system that is experiencing less-than-ideal air flow by blocking air flow in one section of the booth and thus forcing an increase of air flow in the other section of the booth.
  • the grate cover 2 may provide a fluid collection system.
  • the grate cover may be used to collect undirected and/or unintentional fluid spills. Fluid collection with a grate cover 2 may be desirable for safety, fluid recovery, and/or any other purpose.

Landscapes

  • Floor Finish (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

La présente invention a trait à un couvercle de grille comportant une grille conformée pour s'adapter de manière amovible sur tout type de grille. Le couvercle de grille peut être disposé sur une grille de plancher dans une cabine de peinture préalablement à une opération de peinture dans la cabine de peinture pour la protection de la grille de plancher contre la peinture. Le couvercle de grille peut être enlevé de la grille de plancher lorsque l'opération de peinture est terminée. Le couvercle de grille peut être fixé à la grille de plancher à l'aide d'un ou de plusieurs organes de fixation, tels que des agrafes. Le couvercle de grille peut être utilisé dans plusieurs autres applications à diverses fins.
PCT/US2005/034282 2004-09-24 2005-09-26 Couvercle de protection de grille WO2006036839A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61284304P 2004-09-24 2004-09-24
US60/612,843 2004-09-24

Publications (2)

Publication Number Publication Date
WO2006036839A2 true WO2006036839A2 (fr) 2006-04-06
WO2006036839A3 WO2006036839A3 (fr) 2007-03-08

Family

ID=36119476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/034282 WO2006036839A2 (fr) 2004-09-24 2005-09-26 Couvercle de protection de grille

Country Status (1)

Country Link
WO (1) WO2006036839A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012512741A (ja) * 2008-12-19 2012-06-07 スリーエム イノベイティブ プロパティズ カンパニー スプレー塗装ブース用プレフィルター及び汚染削減方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770089A (en) * 1987-05-29 1988-09-13 Vinicombe Gerald K Temporary grate cover for paint spray booth areas
US5025713A (en) * 1990-10-16 1991-06-25 Apollo Manufacturing Corporation Temporary grate cover especially adapted for paint spray booth areas
US6162270A (en) * 1997-06-07 2000-12-19 N.S.Technologies Inc. Downdraft paint booth and filters therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770089A (en) * 1987-05-29 1988-09-13 Vinicombe Gerald K Temporary grate cover for paint spray booth areas
US5025713A (en) * 1990-10-16 1991-06-25 Apollo Manufacturing Corporation Temporary grate cover especially adapted for paint spray booth areas
US6162270A (en) * 1997-06-07 2000-12-19 N.S.Technologies Inc. Downdraft paint booth and filters therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012512741A (ja) * 2008-12-19 2012-06-07 スリーエム イノベイティブ プロパティズ カンパニー スプレー塗装ブース用プレフィルター及び汚染削減方法

Also Published As

Publication number Publication date
WO2006036839A3 (fr) 2007-03-08

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