US20040232098A1 - Blank panel for rack units - Google Patents
Blank panel for rack units Download PDFInfo
- Publication number
- US20040232098A1 US20040232098A1 US10/800,415 US80041504A US2004232098A1 US 20040232098 A1 US20040232098 A1 US 20040232098A1 US 80041504 A US80041504 A US 80041504A US 2004232098 A1 US2004232098 A1 US 2004232098A1
- Authority
- US
- United States
- Prior art keywords
- blank panel
- face plates
- mating structure
- break
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B47/00—Cabinets, racks or shelf units, characterised by features related to dismountability or building-up from elements
- A47B47/02—Cabinets, racks or shelf units, characterised by features related to dismountability or building-up from elements made of metal only
- A47B47/03—Cabinets, racks or shelf units, characterised by features related to dismountability or building-up from elements made of metal only with panels separate from the frame
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/18—Construction of rack or frame
- H05K7/183—Construction of rack or frame support rails therefor
Definitions
- This invention relates generally to panels for use with rack units. More particularly, this invention relates to blank panels comprised of face plates and means for attachment to open and enclosed electronic rack units.
- Known blank panels for use with electronic rack units are typically composed of face plates having a rectangular cross section with elongated holes positioned in proximity to the outer edges for receiving fasteners to facilitate attachment to rack units.
- the face plates and associated holes are dimensionally sized and configured to standards set by the Electronic Industries Association (EIA).
- EIA Standard RS-310-C the dimensional standards for racks, panels, and associated equipment are specified.
- Three cabinet and rack widths to accommodate each of three standard panel widths, 19′′, 24′′, and 30′′ are covered by this Standard. 19′′ is the preferred width.
- Panel height is defined by the Standard in multiples of Rack Units (RU's).
- One Rack Unit is defined as 1.75′′.
- Blank panels are typically employed on rack units for either aesthetic or enclosure purposes.
- a blank panel is often used to keep contaminants (such as dust) out of a rack unit and away from sensitive equipment.
- Rack units also often employ forced or drawn air ventilation systems to cool components. These systems require a substantially closed system to maintain proper convection flows. Open panels on the front of rack units compromise the effectiveness of these systems. Blank panels are often used to cover vacancies in the front of such rack units.
- Blank panels are used extensively in conjunction with various types of rack units. Specific terminology extends to blank plates, blank panels, and face plates among others. Blank panels, as used in the electronics industry, are generally comprised of metal, typically steel or aluminum.
- references in the prior art do not discuss a means for directly incorporating fasteners with blank panels.
- the references also generally require special tools to operate the fasteners which they employ.
- the prior art does not overcome the limitation of an individual blank panel not being adaptable to accommodate various height requirements.
- It is a further object of the invention to provide a blank panel for electronic component rack units comprising at least one face plate with means for slidably receiving fasteners.
- the objects and advantages of the invention are accomplished by a blank panel that is configured to be attachable to a rack unit.
- the blank panel generally comprises at least one face plate having a substantially rectangular front plate surface, a back plate surface, top plate surface, bottom plate surface and two side plate surfaces.
- the face plate has a height preferably corresponding but not limited to multiples of 1.75 inches.
- the face plate is capable of slidably receiving fasteners for being further attached to an electronic component rack unit.
- Fasteners are incorporated to mate with the face plate of the blank panel and be attachable to electronic component rack units.
- the fasteners are configured to securely attach to electronic component rack units with alternate configurations substantially without use of assembly tools.
- the blank panel is comprised of a plurality of face plates held together along their length with break-off grooves that provide for a manual separation of individual face plates and at the same time warrant sufficient structural strength for the blank panel.
- the components of the blank panel are preferably monolithically fabricated of a polymer for light weight and durability.
- Optional glass fiber or the like may be added to the polymer to increase the blank panel's stiffness and/or to modulate a break-off characteristic of the break-off grooves.
- FIG. 1 shows a perspective front view on a plank panel of combined face plates and fasteners.
- FIG. 2A is a perspective back view of the plank panel and fasteners of FIG. 1.
- FIG. 2B is an enlarged detail view indicated in FIG. 2A by numeral 121 .
- FIG. 3 is an enlarged perspective view of the fastener of FIGS. 1, 2A.
- FIG. 4 is a side view of a single face plate and the fasteners of FIG. 1.
- FIG. 5A shows two face plates in a first bent position during face plate separation.
- FIG. 5B is an enlarged detail view indicated in FIG. 5A by numeral 121 .
- FIG. 6A shows the two face plates of FIG. 5A in a second bent position during face plate separation.
- FIG. 6B is an enlarged detail view indicated in FIG. 6A by numeral 121 .
- FIG. 7 shows the two face plates of FIG. 5A immediately after face plate separation.
- a blank panel 1 includes preferably three face plates 10 separable combined along break-off grooves 121 extending between two opposing side surfaces 16 .
- the face plates 10 have contact faces 13 on opposing ends and adjacent the side surfaces 16 .
- the contact faces 13 are separated by reinforcement ribs 55 .
- the contact faces 13 are substantially planar along a first width 131 .
- the reinforcement ribs 55 extend along the second width 551 .
- each of the side surfaces 16 extend inward along the contact faces 13 two finite channels 25 featuring overhead extensions 30 .
- the channels 25 are defined in combination with the overhead extensions 30 to exchangably and slidably hold correspondingly shaped mating structures 61 .
- the contact faces 13 may additionally feature positioning indicators 52 for indicating a predetermined position for the fasteners 60 with their mating structures 61 .
- fasteners 60 may be brought into appropriate position along channels 25 prior to attachment of the face plates 10 and/or blank panel 1 .
- the break-off groove 121 includes a thin film bridge 125 structurally exclusive connecting two adjacent face plates 10 . Positioned in a groove angle GA and oppositely of the thin film bridge 125 are levering faces 126 for inducing a tension force onto the thin film bridge 125 at and in excess of a break-off bending angle B 2 (see FIG. 6B) imposed on two adjacent face plates 10 preferably during manual face plate separation.
- the mating structure 61 is part of the fastener 60 further illustrated in FIGS. 3 and 4.
- the fastener 60 has at least two laterally resilient protrusions 65 extending substantially symmetrically with respect to an attachment axis 69 .
- the attachment axis 69 is substantially perpendicular with respect to a contact face 13 while the mating structure 61 is held in a corresponding channel 25 .
- the protrusions 65 preferably feature straddle lags 651 that extend away from the mating structure 61 in an straddle angle 652 such that the resilient protrusions 65 induce a pulling force via the straddle legs 651 , the column 62 and the mating structure 61 on the associated face plate 10 , while the resilient protrusions 65 are inserted in an orifice hole 4 of the mounting bar 3 .
- the blank panel 1 and/or face plate 10 is forced with the associated contact face 13 against the mounting bar 3 , while the fastener additionally holds the blank panel 1 and/or face plate 10 in position.
- mounting bar 3 and orifice hole 4 are indicated in dotted lines.
- Front surfaces 12 of the face plates 10 may be fabricated with a slight curvature in direction across the main protrusion direction of the blank panel 1 , which provides for a smooth thickness reduction of the main plate bodies towards the intersections.
- the main plate bodies may be fabricated with sufficient strength along the main protrusion direction to sufficiently oppose torsion deformation resulting during the preferably manual face plate separation.
- the height of the intersections 121 may be kept to a minimum, providing a maximum leverage effect and consequently maximum tension load from a given torque preferably manually induced at some point along the protrusion direction of the blank panel 1 .
- the lateral resilient protrusions 65 may further include parallel legs 652 and converging legs 653 terminating in a single closed tip. In that way, the protrusions 65 may provide a certain self centering action when approached to the predetermined orifice hole 4 .
- the parallel legs 652 may assist in adjusting the protrusions 65 deformation behavior and reduce peak stresses by providing sufficient deformation length of the protrusions 65 as may be well appreciated by anyone skilled in the art.
- Preferably two but also three or more lateral resilient protrusions 65 may be concentrically arrayed around the attachment axis 69 .
- the intersection 121 is configured to provide sufficient stiffness to the blank panel 1 and at the same time warrant limited opposition to a manual face plate 10 separation, which may be performed in a two step process.
- a first bent indicated in FIG. 5A two adjacent face plates 10 are bent in an angle B 1 with the front faces 12 towards each other.
- the thin film bridge 125 is excessively deformed after overcoming its natural stiffness.
- the two involved face plates 10 are bent in an angle B 2 in opposite direction with the reinforcement ribs 55 towards each other.
- the levering faces 126 contact and become forced against each other as the second bend angle B 2 is further increased. This results in a tensile load on the previously weakened thin film bridge 125 , which eventually spontaneously rips, completely separating the two adjacent face plates 10 as illustrated in FIG. 7.
- the blank panel 1 is preferably monolithically fabricated by injection molding.
- a preferred polymer material is a well known ABS with optional contents of glass or other stiffening fibers. The fiber contents may be adjusted in conjunction with the dimensions of thin film bridge 125 and groove angle GA to warrant instantaneous and complete separation as may be well appreciated by anyone skilled in the art.
Abstract
A plank panel for covering fronts of electronic equipment racks consists of preferably three face plates separable via a break-off groove such that the plank panel may be easily reduced to a lesser height. The face plates provide slots for fasteners that slide in from the side and are adjustable to slight dimensional discrepancies and various configurations of the mounting holes of various rack systems.
Description
- The present application is a Continuation in Part to the equally titled U.S. patent application filed Apr. 19, 2001, application Ser. No. 09/839,567, which is hereby incorporated by reference.
- This invention relates generally to panels for use with rack units. More particularly, this invention relates to blank panels comprised of face plates and means for attachment to open and enclosed electronic rack units.
- Known blank panels for use with electronic rack units are typically composed of face plates having a rectangular cross section with elongated holes positioned in proximity to the outer edges for receiving fasteners to facilitate attachment to rack units. The face plates and associated holes are dimensionally sized and configured to standards set by the Electronic Industries Association (EIA). In EIA Standard RS-310-C the dimensional standards for racks, panels, and associated equipment are specified. Three cabinet and rack widths to accommodate each of three standard panel widths, 19″, 24″, and 30″ are covered by this Standard. 19″ is the preferred width. Panel height is defined by the Standard in multiples of Rack Units (RU's). One Rack Unit is defined as 1.75″.
- Blank panels are typically employed on rack units for either aesthetic or enclosure purposes. A blank panel is often used to keep contaminants (such as dust) out of a rack unit and away from sensitive equipment. Rack units also often employ forced or drawn air ventilation systems to cool components. These systems require a substantially closed system to maintain proper convection flows. Open panels on the front of rack units compromise the effectiveness of these systems. Blank panels are often used to cover vacancies in the front of such rack units.
- Blank panels are used extensively in conjunction with various types of rack units. Specific terminology extends to blank plates, blank panels, and face plates among others. Blank panels, as used in the electronics industry, are generally comprised of metal, typically steel or aluminum.
- For examples of prior art panels and their methods of attachment to rack units see Peroni in U.S. Pat. No. 5,971,507 and Odell in U.S. Pat. No. 5,312,005. The devices disclosed do not illustrate a novel means for attaching panels to a rack unit. The references employ standard elongated orifices positioned near the ends of the panel to accept threaded fasteners. In U.S. Pat. No. 5,992,808 Morrow teaches the use of a “key” for attaching electronic components and panels to rack units. The key has a geometry so as to be insertable through openings on the periphery of a panel, and subsequently through corresponding openings in a rack unit. On rotating the key through 90 degrees the key locks in position, thus securing the panel in place. This method for attaching panels to rack units offers the advantage of not requiring special tools, however, it also requires that the rack unit be modified to lock the keys in the rotated position. A further shortcoming is inherent in the shear number of individual keys required to attach a single panel to a rack unit, such loose parts are both cumbersome and at risk for loss.
- References in the prior art do not discuss a means for directly incorporating fasteners with blank panels. The references also generally require special tools to operate the fasteners which they employ. Further, the prior art does not overcome the limitation of an individual blank panel not being adaptable to accommodate various height requirements.
- What is needed is a blank panel that is attachable to racking units in a secure manner, which employs fasteners that do not require the use of special tools or equipment. The fasteners should be easy to replace and accommodate various rack configurations. The blank panel needs to be functional, light weight, modular and versatile. The blank panel should conform to recognized standards for racks, panels, and associated equipment. It would also be useful if the blank panel could be modified to accommodate varied height requirements.
- Accordingly, it is a primary object of the present invention to provide a blank panel that can be securely attached to electronic component rack units.
- It is a further object of the invention to provide a blank panel for rack units that is attachable without the use of special tools.
- It is a further object of the invention to provide a blank panel for electronic component rack units comprising at least one face plate with means for slidably receiving fasteners.
- It is a further object of the invention to provide a blank panel for electronic component rack units, wherein the blank panel comprises a plurality of face plates capable of covering multiple adjacent openings.
- It is a further object of the invention to provide a blank panel for electronic component rack units incorporating a plurality of face plates, wherein individual face plates of the blank panel are modular and can be separated to configure the blank panel to varied height requirements.
- The objects and advantages of the invention are accomplished by a blank panel that is configured to be attachable to a rack unit. The blank panel generally comprises at least one face plate having a substantially rectangular front plate surface, a back plate surface, top plate surface, bottom plate surface and two side plate surfaces. The face plate has a height preferably corresponding but not limited to multiples of 1.75 inches. The face plate is capable of slidably receiving fasteners for being further attached to an electronic component rack unit.
- Fasteners are incorporated to mate with the face plate of the blank panel and be attachable to electronic component rack units. The fasteners are configured to securely attach to electronic component rack units with alternate configurations substantially without use of assembly tools.
- In a preferred embodiment of the invention, the blank panel is comprised of a plurality of face plates held together along their length with break-off grooves that provide for a manual separation of individual face plates and at the same time warrant sufficient structural strength for the blank panel.
- The components of the blank panel are preferably monolithically fabricated of a polymer for light weight and durability. Optional glass fiber or the like may be added to the polymer to increase the blank panel's stiffness and/or to modulate a break-off characteristic of the break-off grooves.
- FIG. 1 shows a perspective front view on a plank panel of combined face plates and fasteners.
- FIG. 2A is a perspective back view of the plank panel and fasteners of FIG. 1.
- FIG. 2B is an enlarged detail view indicated in FIG. 2A by
numeral 121. - FIG. 3 is an enlarged perspective view of the fastener of FIGS. 1, 2A.
- FIG. 4 is a side view of a single face plate and the fasteners of FIG. 1.
- FIG. 5A shows two face plates in a first bent position during face plate separation.
- FIG. 5B is an enlarged detail view indicated in FIG. 5A by
numeral 121. - FIG. 6A shows the two face plates of FIG. 5A in a second bent position during face plate separation.
- FIG. 6B is an enlarged detail view indicated in FIG. 6A by
numeral 121. - FIG. 7 shows the two face plates of FIG. 5A immediately after face plate separation.
- Referring to FIGS. 1 and 2, a
blank panel 1 includes preferably threeface plates 10 separable combined along break-offgrooves 121 extending between two opposing side surfaces 16. Theface plates 10 have contact faces 13 on opposing ends and adjacent the side surfaces 16. The contact faces 13 are separated byreinforcement ribs 55. The contact faces 13 are substantially planar along afirst width 131. Thereinforcement ribs 55 extend along thesecond width 551. - From preferably each of the side surfaces16 extend inward along the contact faces 13 two
finite channels 25 featuringoverhead extensions 30. Thechannels 25 are defined in combination with theoverhead extensions 30 to exchangably and slidably hold correspondingly shapedmating structures 61. - The contact faces13 may additionally feature
positioning indicators 52 for indicating a predetermined position for thefasteners 60 with theirmating structures 61. As an advantageous result,fasteners 60 may be brought into appropriate position alongchannels 25 prior to attachment of theface plates 10 and/orblank panel 1. - Referring to FIG. 2B, the break-off
groove 121 includes athin film bridge 125 structurally exclusive connecting twoadjacent face plates 10. Positioned in a groove angle GA and oppositely of thethin film bridge 125 are leveringfaces 126 for inducing a tension force onto thethin film bridge 125 at and in excess of a break-off bending angle B2 (see FIG. 6B) imposed on twoadjacent face plates 10 preferably during manual face plate separation. - The
mating structure 61 is part of thefastener 60 further illustrated in FIGS. 3 and 4. Thefastener 60 has at least two laterallyresilient protrusions 65 extending substantially symmetrically with respect to anattachment axis 69. Theattachment axis 69 is substantially perpendicular with respect to acontact face 13 while themating structure 61 is held in a correspondingchannel 25. - The
protrusions 65 preferably feature straddle lags 651 that extend away from themating structure 61 in anstraddle angle 652 such that theresilient protrusions 65 induce a pulling force via thestraddle legs 651, thecolumn 62 and themating structure 61 on the associatedface plate 10, while theresilient protrusions 65 are inserted in anorifice hole 4 of the mounting bar 3. As a favorable result, theblank panel 1 and/orface plate 10 is forced with the associatedcontact face 13 against the mounting bar 3, while the fastener additionally holds theblank panel 1 and/orface plate 10 in position. In FIG. 4, mounting bar 3 andorifice hole 4 are indicated in dotted lines. - Front surfaces12 of the
face plates 10 may be fabricated with a slight curvature in direction across the main protrusion direction of theblank panel 1, which provides for a smooth thickness reduction of the main plate bodies towards the intersections. In that manner, the main plate bodies may be fabricated with sufficient strength along the main protrusion direction to sufficiently oppose torsion deformation resulting during the preferably manual face plate separation. At the same time, the height of theintersections 121 may be kept to a minimum, providing a maximum leverage effect and consequently maximum tension load from a given torque preferably manually induced at some point along the protrusion direction of theblank panel 1. - The lateral
resilient protrusions 65 may further includeparallel legs 652 and converginglegs 653 terminating in a single closed tip. In that way, theprotrusions 65 may provide a certain self centering action when approached to thepredetermined orifice hole 4. Theparallel legs 652 may assist in adjusting theprotrusions 65 deformation behavior and reduce peak stresses by providing sufficient deformation length of theprotrusions 65 as may be well appreciated by anyone skilled in the art. Preferably two but also three or more lateralresilient protrusions 65 may be concentrically arrayed around theattachment axis 69. - The
intersection 121 is configured to provide sufficient stiffness to theblank panel 1 and at the same time warrant limited opposition to amanual face plate 10 separation, which may be performed in a two step process. During a first bent indicated in FIG. 5A, twoadjacent face plates 10 are bent in an angle B1 with the front faces 12 towards each other. During the initial first bend, thethin film bridge 125 is excessively deformed after overcoming its natural stiffness. During a consecutive second bend indicated in FIG. 6A, the twoinvolved face plates 10 are bent in an angle B2 in opposite direction with thereinforcement ribs 55 towards each other. At the moment when the second bend angle B2 approximately exceeds the groove angle GA, the levering faces 126 contact and become forced against each other as the second bend angle B2 is further increased. This results in a tensile load on the previously weakenedthin film bridge 125, which eventually spontaneously rips, completely separating the twoadjacent face plates 10 as illustrated in FIG. 7. - The
blank panel 1 is preferably monolithically fabricated by injection molding. A preferred polymer material is a well known ABS with optional contents of glass or other stiffening fibers. The fiber contents may be adjusted in conjunction with the dimensions ofthin film bridge 125 and groove angle GA to warrant instantaneous and complete separation as may be well appreciated by anyone skilled in the art. - Accordingly, the scope of the invention should be determined by the following claims and their legal equivalents.
Claims (6)
1. A blank panel comprised of at least two face plates separable combined along a break-off groove extending between two opposing side surfaces of said blank panel, wherein at least one of said at least two face plates has two contact faces on opposing ends adjacent said side surfaces separated by reinforcement ribs, and wherein at least one of said at least two face plates has two finite channels inward extending from both of said opposing side surfaces along said contact faces for exchangably and slidably holding a correspondingly shaped mating structure.
2. The blank panel of claim 1 , wherein at least one of said contact faces further comprises positioning indicators for indicating a predetermined position of said mating structure.
3. The blank panel of claim 1 , wherein said break-off groove includes a thin film bridge structurally exclusively connecting two adjacent of said at least two face plates.
4. The blank panel of claim 3 , wherein said break-off groove further comprises angled and oppositely of said thin film bridge positioned levering faces for inducing a tension force onto said thin film bridge at and in excess of a break-off bending angle between said two adjacent face plates.
5. The blank panel of claim 1 , wherein said mating structure is part of a fastener having at least two laterally resilient protrusions extending substantially symmetrically with respect to an attachment axis of said fastener, said attachment axis being substantially perpendicular with respect to said contact face while said mating structure is held in said channel.
6. The blank panel of claim 5 , wherein said at least two laterally resilient protrusions feature straddle legs extending away from said mating structure in an straddle angle such that said at least two laterally resilient protrusions induce a pulling force via said straddle legs and said mating structure on said face plate, while said laterally resilient protrusions are inserted in an orifice hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/800,415 US20040232098A1 (en) | 2001-04-19 | 2004-03-12 | Blank panel for rack units |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US09/839,567 US6758353B2 (en) | 2001-04-19 | 2001-04-19 | Blank panel for rack units |
US10/800,415 US20040232098A1 (en) | 2001-04-19 | 2004-03-12 | Blank panel for rack units |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/839,567 Continuation-In-Part US6758353B2 (en) | 2001-04-19 | 2001-04-19 | Blank panel for rack units |
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US20040232098A1 true US20040232098A1 (en) | 2004-11-25 |
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US10/800,415 Abandoned US20040232098A1 (en) | 2001-04-19 | 2004-03-12 | Blank panel for rack units |
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Cited By (15)
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US20060081545A1 (en) * | 2004-10-15 | 2006-04-20 | Rasmussen Neil | Blanking panel for equipment rack or enclosure |
US20080011510A1 (en) * | 2006-07-12 | 2008-01-17 | General Electric Company | Hybrid faceplate having reduced EMI emissions |
US20090059486A1 (en) * | 2007-08-21 | 2009-03-05 | Compuspace Lc | Server rack blanking panel and system |
US20090178985A1 (en) * | 2008-01-11 | 2009-07-16 | Sempliner Arthur T | Blanking panel for standardized equipment rack and cabinet enclosure |
US20100035535A1 (en) * | 2006-04-11 | 2010-02-11 | Compuspace Lc | Plenum partition baffle system |
US20130160372A1 (en) * | 2011-12-22 | 2013-06-27 | Hon Hai Precision Industry Co., Ltd. | Faceplate for electronic device |
US20130309440A1 (en) * | 2011-10-28 | 2013-11-21 | Idc Solutions Pty Ltd | Panel |
US20140138336A1 (en) * | 2011-08-22 | 2014-05-22 | Fujitsu Limited | Blank plate |
US8915286B2 (en) | 2010-12-17 | 2014-12-23 | Panduit Corp. | Roller shade filler panel |
GB2517946A (en) * | 2013-09-05 | 2015-03-11 | Ibm | Adjustable blanking panel for datacentre racks |
US9007763B2 (en) | 2010-06-01 | 2015-04-14 | International Business Machines Corporation | Airflow control apparatus |
US10206306B2 (en) * | 2016-11-09 | 2019-02-12 | Level 3 Communications, Llc | Rack cover assembly and system |
US10455744B2 (en) | 2016-07-31 | 2019-10-22 | Ilone Grinberg | Extendible barrier |
US10809774B2 (en) | 2016-08-12 | 2020-10-20 | Hypertechnologie Ciara Inc. | Fluid flow tunnelling in a non-metallic computer chassis |
US20220264760A1 (en) * | 2019-07-18 | 2022-08-18 | Nippon Telegraph And Telephone Corporation | Blank panel |
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