US20060049727A1 - Integrated chassis assembly - Google Patents
Integrated chassis assembly Download PDFInfo
- Publication number
- US20060049727A1 US20060049727A1 US11/012,020 US1202004A US2006049727A1 US 20060049727 A1 US20060049727 A1 US 20060049727A1 US 1202004 A US1202004 A US 1202004A US 2006049727 A1 US2006049727 A1 US 2006049727A1
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- US
- United States
- Prior art keywords
- cabinet
- chassis assembly
- side walls
- brackets
- pair
- 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
Links
- 239000002184 metal Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 description 5
- 238000003491 array Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1424—Card cages
- H05K7/1425—Card cages of standardised dimensions, e.g. 19"-subrack
Definitions
- This application claims the benefit of Provisional Application No. 60/607,687, filed Sep. 7, 2004.
- This invention relates to telephone and data communication apparatus. It relates more particularly to an integrated chassis assembly to house such apparatus.
- Telecommunications switch/server apparatus is used to route message traffic over a network.
- such apparatus comprises a chassis or housing containing various electrical components and subassemblies that enable the switch to perform its functions, e.g. processors, memories, line-interface units and other network gear. Electrical connections to and from the switch are made by way of a multiplicity of data and telephony ports at the rear of the chassis. Cables plugged into those ports connect the switch to outside lines and to other units comprising the overall telecommunications system.
- the prior switches of this type are disadvantaged in that all of the major subassemblies within the switch such as processors, power supplies, line-interface units, etc. are supported and interconnected by a single motherboard or backplane within the chassis. This, of course, prevents customers from being able to select for incorporation into a given switch, processors and other subassemblies from specifics sources or vendors. In other words, a customer may want its switch to include a line-interface unit from one vendor and a host computer from another vendor. Conventional chassis designs do not allow for this flexibility.
- Another object of the invention is to provide a chassis such as this which can be mounted in a cabinet or rack or sit alone or be stacked on a desk or shelf.
- Another object of the invention is to provide such a chassis which integrates switch subassemblies or units from different suppliers so that the totality has the look of equipment from a single provider.
- a further object of the invention is to provide a chassis which may provide AC or DC power distribution for the units within the chassis.
- Yet another object of the invention is to provide a chassis which addresses the power, cabling and integration requirements that developers face when bringing their software solutions to market.
- a further object of the invention is to provide a chassis which provides proper ventilation for all of the units to be contained within the chassis.
- Another object of the invention is to provide a chassis which allows for easy insertion and removal of the units within the chassis.
- our chassis assembly comprises a generally rectangular cabinet or housing having a top wall, a bottom wall, and opposite side walls, the front and rear of the cabinet or housing being open to allow for circulation of air through the cabinet.
- Vertical arrays of horizontal vent openings or slots are provided in the cabinet side walls to provide for lateral circulation of air within the cabinet.
- flanges are formed at the front edges of the cabinet side walls, and these flanges are provided with openings for fasteners when the chassis assembly is mounted in a rack.
- vertical columns of interior tabs are struck from the side walls of the cabinet adjacent to the rear edges thereof.
- the columns of tabs in the two walls are spaced directly opposite one another with the tabs in each column being spaced apart vertically to define a series of mounting positions or levels within the cabinet.
- Also formed in the cabinet side walls adjacent to the front edges thereof are vertical columns of fastener holes. The number of holes in each hole column correspond to the number of tabs in each tab column and the holes are located at more or less the same levels on the side walls as the tabs.
- the cabinet is dimensioned to support a stack of self-contained data or telecommunications equipment units or subassemblies such as power supply units, host computer units, etc., the number of such units corresponding to the number of tabs in each column of tabs and the number of holes in each column of holes in the side walls of the cabinet.
- the chassis assembly also includes special brackets for mounting to the opposite sides of the various equipment units that are to be contained within the chassis assembly. These brackets cooperate with the columns of stops or tabs in the side walls of the cabinet to locate those units vertically within the cabinet. As will be described in detail later, those units are releasably secured within the cabinet by fasteners inserted through the columns of fastener holes in the side walls of the cabinet and into the front end portions of the brackets.
- the front opening into the cabinet may be mostly closed by a removable generally rectangular grille which does not materially interfere with the circulation of air within the cabinet but which gives the chassis assembly and its contents the appearance of a piece of equipment originating from a single provider and which provides a convenient mounting surface for that provider's trade name or logo.
- chassis assembly is designed particularly to integrate third-party host computers with network gear to provide a marketable, privately labeled solution to various customers' data communications and telephony requirements.
- the chassis assembly can be mounted with any EAI 569 compliant cabinet or rack or sit or be stacked on a table or shelf.
- the chassis assembly may accommodate a power distribution unit for delivering either AC or DC power and the open back of the chassis assembly facilitates the necessary wiring and cabling to interconnect the various units within the chassis and to connect those units to a power source and to other similar equipment.
- FIG. 1 is a right front perspective view of a chassis assembly incorporating the invention
- FIG. 2 is a left front perspective view, partially exploded, of the FIG. 1 assembly showing the chassis assembly contents;
- FIG. 3 is a right rear perspective view of the chassis assembly and its contents
- FIG. 4 is a right front perspective view, partially exploded, of the chassis assembly
- FIG. 5 is a perspective view with parts removed showing the interior components of the assembly in greater detail
- FIG. 6A is a rear elevational view showing the wiring details of the various units including an AC power supply unit contained within the chassis assembly, and
- FIG. 6B is a similar view of the chassis assembly containing a DC power supply unit.
- our chassis assembly comprises a cabinet shown generally at 10 which includes a top wall 110 a , a bottom wall 10 b and a pair of opposite mirror-image side walls 10 c , 10 c .
- Bottom wall 10 b and side walls 10 c , 10 c are formed of a single piece of sheet metal with the side walls bent up at right angles to the bottom wall to form a generally U-shaped channel.
- Top wall 10 a is a flat metal plate having depending side flanges (not shown) extending down just inside the upper edge margins of side walls 10 c , 10 c . That top wall is secured to the side walls by fasteners 12 extending through the side walls and threaded into the depending flanges of top wall 10 a.
- the front and rear of cabinet 10 are open so that air can circulate through the cabinet.
- the cabinet side walls 10 c , 10 c are provided with vertical arrays 14 of horizontal vent openings or slots to allow crosswise circulation of air through the chassis assembly.
- out-turned flanges 16 , 16 are provided at the front edges of side walls 10 c , 10 c . Openings 18 in those flanges accommodate threaded fasteners or other securements to secure the flanges to the rack.
- chassis 10 may sit alone on a desk or table.
- Cabinet 10 is dimensioned to contain a stack of self-contained units or subassemblies capable of forming a telecommunications switch, server or other such apparatus used in data communications, telephony or the like.
- a particular cabinet may contain a power supply unit P, typically located at the bottom of the cabinet, and various other units such as host computers, line-interface units, etc. These units are labeled U 1 , U 2 , . . . U x .
- the power supply unit P may be segregated from the other units by means of a horizontal partition 22 secured between the cabinet side walls 10 c , 10 c near the bottom of the cabinet as best seen in FIGS. 2 and 3 .
- the front of the cabinet 10 is closed by means of a generally rectangular perforated front cover or grille 24 which does not impede air flow through the cabinet.
- the grille has an all-around skirt or flange 24 a and may be releasably secured to the front of the cabinet by means of a pair of tabs 26 , 26 which extend up at the front edge of cabinet bottom wall 10 b adjacent to side walls 10 c , 10 c and second pair of tabs 28 , 28 which extend down from the front edge of the cabinet top wall 10 a adjacent those side walls.
- the bottom segment of the grille skirt is slotted to receive tabs 26 and the grille swung toward the cabinet until its upper edge engages tabs 28 .
- Fasteners 32 may be inserted through the upper corners of the grille and through aligned openings in tabs 28 to releasably secure the grille to the chassis.
- grille 24 finishes off the front of the chassis assembly so that the assembly and its contents appear to originate from a single provider or private label supplier even though the various units P, U 1 . . . U x may originate from different suppliers.
- the grille 24 also provides a convenient mounting surface for a logo or trade name as shown at 36 to advertise the private labeling of the product.
- chassis assembly is dimensioned for accommodating a power supply unit P and seven units U 1 . . . U 7 .
- cabinet 10 has eight vertical positions or levels for holding up to eight self-contained units of data communications or telephony equipment.
- the cabinet could just as well be dimensioned to accommodate a stack of fewer or more such units.
- stops or tabs 42 are struck from the cabinet side walls 10 c , 10 c near the rear edges thereof. These stops or tabs are spaced apart in a vertical column and define vertical mounting positions for the various units U 1 . . . U x in cabinet 10 .
- the illustrated chassis assembly has a vertical column of six such stops or tabs 42 whose forward edges are spaced from the cabinet side walls 10 c , 10 c and face the front of the cabinet. Corresponding vertical columns of holes 44 are provided adjacent to the front edges of the cabinet side walls 10 c , 10 c.
- Brackets 46 are basically elongated, generally rectangular metal straps which are adapted to be secured to the opposite sides of the units U 1 . . . U x to be installed in the chassis assembly.
- the brackets 46 adapt those units, which may originate from different suppliers, so that those units can be installed and integrated in the assembly.
- the brackets 46 have holes 47 for receiving threaded fasteners or other suitable means to secure the brackets to the opposite sides of those units.
- each bracket 46 is formed with a rearwardly facing notch 48 which can interfit with a stop or tab 42 in a cabinet side wall 10 c , 10 c .
- a pair of brackets 46 is secured to the opposite sides of a given unit U 1 . . . U x , that unit may be slid into a given vertical position in cabinet 10 such that notches 48 at the rear ends of those brackets 46 engage corresponding stops or tabs 42 on the cabinet side walls 10 c , 10 c to set the vertical position of that unit within the cabinet.
- each bracket 46 may be releasably secured to the corresponding cabinet side wall by a suitable fastener 52 inserted through the appropriate hole 44 in the adjacent side wall 10 c , 10 c and threaded into a registering hole 47 in that bracket 46 .
- brackets 46 illustrated in FIG. 5 are shown as being vertically notched from below. These notches are to provide clearance for various obstructions that may be present on the units U 1 . . . U x to which the brackets may be attached. However, those brackets could just as well have squared off front ends.
- brackets 46 when the brackets 46 are attached to the opposite sides of the units U 1 . . . U x , they permit those units to be inserted and secured at spaced apart positions or levels within the cabinet 10 without appreciably obstructing the vertical arrays 14 of vent openings in the side walls of the cabinet.
- cables C may be coupled to or plugged into (and uncoupled from) the various units quite easily in a minimum amount of time. For the same reason, connections may be made easily to an external power source and to other data communications equipment.
Abstract
Description
- This application claims the benefit of Provisional Application No. 60/607,687, filed Sep. 7, 2004. This invention relates to telephone and data communication apparatus. It relates more particularly to an integrated chassis assembly to house such apparatus.
- Telecommunications switch/server apparatus is used to route message traffic over a network. Conventionally, such apparatus comprises a chassis or housing containing various electrical components and subassemblies that enable the switch to perform its functions, e.g. processors, memories, line-interface units and other network gear. Electrical connections to and from the switch are made by way of a multiplicity of data and telephony ports at the rear of the chassis. Cables plugged into those ports connect the switch to outside lines and to other units comprising the overall telecommunications system.
- The prior switches of this type are disadvantaged in that all of the major subassemblies within the switch such as processors, power supplies, line-interface units, etc. are supported and interconnected by a single motherboard or backplane within the chassis. This, of course, prevents customers from being able to select for incorporation into a given switch, processors and other subassemblies from specifics sources or vendors. In other words, a customer may want its switch to include a line-interface unit from one vendor and a host computer from another vendor. Conventional chassis designs do not allow for this flexibility.
- Accordingly, it is an objective of the present invention to provide a chassis for telecommunications equipment which allows for the integration of host computers, line-interface units, etc. from various different suppliers.
- Another object of the invention is to provide a chassis such as this which can be mounted in a cabinet or rack or sit alone or be stacked on a desk or shelf.
- Another object of the invention is to provide such a chassis which integrates switch subassemblies or units from different suppliers so that the totality has the look of equipment from a single provider.
- A further object of the invention is to provide a chassis which may provide AC or DC power distribution for the units within the chassis.
- Yet another object of the invention is to provide a chassis which addresses the power, cabling and integration requirements that developers face when bringing their software solutions to market.
- A further object of the invention is to provide a chassis which provides proper ventilation for all of the units to be contained within the chassis.
- Another object of the invention is to provide a chassis which allows for easy insertion and removal of the units within the chassis.
- Other objects will, in part, be obvious and will, in part, appear hereinafter.
- The invention accordingly comprises the features of construction, combination of elements and arrangement of parts which will be exemplified in the following detailed description and the scope of the invention will be indicated in the claims.
- Briefly, our chassis assembly comprises a generally rectangular cabinet or housing having a top wall, a bottom wall, and opposite side walls, the front and rear of the cabinet or housing being open to allow for circulation of air through the cabinet. Vertical arrays of horizontal vent openings or slots are provided in the cabinet side walls to provide for lateral circulation of air within the cabinet.
- Preferably also, flanges are formed at the front edges of the cabinet side walls, and these flanges are provided with openings for fasteners when the chassis assembly is mounted in a rack.
- In accordance with the invention, vertical columns of interior tabs are struck from the side walls of the cabinet adjacent to the rear edges thereof. The columns of tabs in the two walls are spaced directly opposite one another with the tabs in each column being spaced apart vertically to define a series of mounting positions or levels within the cabinet. Also formed in the cabinet side walls adjacent to the front edges thereof are vertical columns of fastener holes. The number of holes in each hole column correspond to the number of tabs in each tab column and the holes are located at more or less the same levels on the side walls as the tabs.
- The cabinet is dimensioned to support a stack of self-contained data or telecommunications equipment units or subassemblies such as power supply units, host computer units, etc., the number of such units corresponding to the number of tabs in each column of tabs and the number of holes in each column of holes in the side walls of the cabinet.
- As we shall see, the chassis assembly also includes special brackets for mounting to the opposite sides of the various equipment units that are to be contained within the chassis assembly. These brackets cooperate with the columns of stops or tabs in the side walls of the cabinet to locate those units vertically within the cabinet. As will be described in detail later, those units are releasably secured within the cabinet by fasteners inserted through the columns of fastener holes in the side walls of the cabinet and into the front end portions of the brackets.
- Once the units are installed within the cabinet, the front opening into the cabinet may be mostly closed by a removable generally rectangular grille which does not materially interfere with the circulation of air within the cabinet but which gives the chassis assembly and its contents the appearance of a piece of equipment originating from a single provider and which provides a convenient mounting surface for that provider's trade name or logo.
- It will be appreciated that our chassis assembly is designed particularly to integrate third-party host computers with network gear to provide a marketable, privately labeled solution to various customers' data communications and telephony requirements. The chassis assembly can be mounted with any EAI 569 compliant cabinet or rack or sit or be stacked on a table or shelf. The chassis assembly may accommodate a power distribution unit for delivering either AC or DC power and the open back of the chassis assembly facilitates the necessary wiring and cabling to interconnect the various units within the chassis and to connect those units to a power source and to other similar equipment.
- For a fuller understanding of the nature and objects of the invention, reference should be made to the following detailed description taken in connection with the accompanying drawings, in which:
-
FIG. 1 is a right front perspective view of a chassis assembly incorporating the invention; -
FIG. 2 is a left front perspective view, partially exploded, of theFIG. 1 assembly showing the chassis assembly contents; -
FIG. 3 is a right rear perspective view of the chassis assembly and its contents; -
FIG. 4 is a right front perspective view, partially exploded, of the chassis assembly; -
FIG. 5 is a perspective view with parts removed showing the interior components of the assembly in greater detail; -
FIG. 6A is a rear elevational view showing the wiring details of the various units including an AC power supply unit contained within the chassis assembly, and -
FIG. 6B is a similar view of the chassis assembly containing a DC power supply unit. - Referring to FIGS. 1 to 3 of the drawings, our chassis assembly comprises a cabinet shown generally at 10 which includes a top wall 110 a, a
bottom wall 10 b and a pair of opposite mirror-image side walls 10 c, 10 c.Bottom wall 10 b and side walls 10 c, 10 c are formed of a single piece of sheet metal with the side walls bent up at right angles to the bottom wall to form a generally U-shaped channel.Top wall 10 a is a flat metal plate having depending side flanges (not shown) extending down just inside the upper edge margins of side walls 10 c, 10 c. That top wall is secured to the side walls byfasteners 12 extending through the side walls and threaded into the depending flanges oftop wall 10 a. - As best seen in
FIGS. 2 and 3 , the front and rear ofcabinet 10 are open so that air can circulate through the cabinet. Also, the cabinet side walls 10 c, 10 c are provided withvertical arrays 14 of horizontal vent openings or slots to allow crosswise circulation of air through the chassis assembly. - To facilitate mounting chassis assembly in a rack or cabinet (not shown), out-turned
flanges chassis 10 may sit alone on a desk or table. -
Cabinet 10 is dimensioned to contain a stack of self-contained units or subassemblies capable of forming a telecommunications switch, server or other such apparatus used in data communications, telephony or the like. Thus, a particular cabinet may contain a power supply unit P, typically located at the bottom of the cabinet, and various other units such as host computers, line-interface units, etc. These units are labeled U1, U2, . . . Ux. The power supply unit P may be segregated from the other units by means of ahorizontal partition 22 secured between the cabinet side walls 10 c, 10 c near the bottom of the cabinet as best seen inFIGS. 2 and 3 . - Preferably, after the units P and U1 . . . Ux are installed in the chassis assembly as will be described, the front of the
cabinet 10 is closed by means of a generally rectangular perforated front cover orgrille 24 which does not impede air flow through the cabinet. The grille has an all-around skirt orflange 24 a and may be releasably secured to the front of the cabinet by means of a pair oftabs bottom wall 10 b adjacent to side walls 10 c, 10 c and second pair oftabs top wall 10 a adjacent those side walls. To secure the grille, the bottom segment of the grille skirt is slotted to receivetabs 26 and the grille swung toward the cabinet until its upper edge engagestabs 28.Fasteners 32 may be inserted through the upper corners of the grille and through aligned openings intabs 28 to releasably secure the grille to the chassis. As best seen inFIG. 1 ,grille 24 finishes off the front of the chassis assembly so that the assembly and its contents appear to originate from a single provider or private label supplier even though the various units P, U1 . . . Ux may originate from different suppliers. Thegrille 24 also provides a convenient mounting surface for a logo or trade name as shown at 36 to advertise the private labeling of the product. - It is important to emphasis that the illustrated chassis assembly is dimensioned for accommodating a power supply unit P and seven units U1 . . . U7. In other words,
cabinet 10 has eight vertical positions or levels for holding up to eight self-contained units of data communications or telephony equipment. However, the cabinet could just as well be dimensioned to accommodate a stack of fewer or more such units. - In any event, all of the various units U1 . . . Ux are mounted to the
cabinet 10 in the same way. More particularly and as best seen inFIGS. 4 and 5 , stops ortabs 42 are struck from the cabinet side walls 10 c, 10 c near the rear edges thereof. These stops or tabs are spaced apart in a vertical column and define vertical mounting positions for the various units U1 . . . Ux incabinet 10. The illustrated chassis assembly has a vertical column of six such stops ortabs 42 whose forward edges are spaced from the cabinet side walls 10 c, 10 c and face the front of the cabinet. Corresponding vertical columns ofholes 44 are provided adjacent to the front edges of the cabinet side walls 10 c, 10 c. - The stops or
tabs 42 and holes 44 in each cabinet side wall 10 c, 10 c are designed to mate with a vertical column ofbrackets 46 forming part of the chassis assembly.Brackets 46 are basically elongated, generally rectangular metal straps which are adapted to be secured to the opposite sides of the units U1 . . . Ux to be installed in the chassis assembly. In other words, thebrackets 46 adapt those units, which may originate from different suppliers, so that those units can be installed and integrated in the assembly. For this, thebrackets 46 haveholes 47 for receiving threaded fasteners or other suitable means to secure the brackets to the opposite sides of those units. - As best seen in
FIG. 5 , the rear end of eachbracket 46 is formed with a rearwardly facingnotch 48 which can interfit with a stop ortab 42 in a cabinet side wall 10 c, 10 c. When a pair ofbrackets 46 is secured to the opposite sides of a given unit U1 . . . Ux, that unit may be slid into a given vertical position incabinet 10 such thatnotches 48 at the rear ends of thosebrackets 46 engage corresponding stops ortabs 42 on the cabinet side walls 10 c, 10 c to set the vertical position of that unit within the cabinet. The forward end of eachbracket 46 may be releasably secured to the corresponding cabinet side wall by asuitable fastener 52 inserted through theappropriate hole 44 in the adjacent side wall 10 c, 10 c and threaded into a registeringhole 47 in thatbracket 46. - The front ends of the
brackets 46 illustrated inFIG. 5 are shown as being vertically notched from below. These notches are to provide clearance for various obstructions that may be present on the units U1 . . . Ux to which the brackets may be attached. However, those brackets could just as well have squared off front ends. - In any event, as shown in
FIG. 5 , when thebrackets 46 are attached to the opposite sides of the units U1 . . . Ux, they permit those units to be inserted and secured at spaced apart positions or levels within thecabinet 10 without appreciably obstructing thevertical arrays 14 of vent openings in the side walls of the cabinet. - When one of the units P, U1 . . . Ux malfunctions, it may be replaced easily by removing
grill 24 and sliding the defective unit out of the chassis and replacing it with one that is operative. - As best seen in
FIGS. 3, 6 a and 6 b, the connections to all of the units P and U1 . . . Ux are made at the rears of those units by appropriate cables C. Since the rear end ofcabinet 10 is completely open, cables C may be coupled to or plugged into (and uncoupled from) the various units quite easily in a minimum amount of time. For the same reason, connections may be made easily to an external power source and to other data communications equipment. - It will thus be seen that the objects set forth above among those made apparent from the preceding description are efficiently attained and, since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
- It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention described herein.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/012,020 US20060049727A1 (en) | 2004-09-07 | 2004-12-14 | Integrated chassis assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US60768704P | 2004-09-07 | 2004-09-07 | |
US11/012,020 US20060049727A1 (en) | 2004-09-07 | 2004-12-14 | Integrated chassis assembly |
Publications (1)
Publication Number | Publication Date |
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US20060049727A1 true US20060049727A1 (en) | 2006-03-09 |
Family
ID=35995514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/012,020 Abandoned US20060049727A1 (en) | 2004-09-07 | 2004-12-14 | Integrated chassis assembly |
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US (1) | US20060049727A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170332519A1 (en) * | 2016-05-11 | 2017-11-16 | Facebook, Inc. | Modular network switches, associated structures, and associated methods of manufacture and use |
US10110978B2 (en) | 2016-02-19 | 2018-10-23 | Facebook, Inc. | Wavelength division multiplexer with packet switching based on header information or performance metric information for optical channels |
US10374709B2 (en) | 2017-07-20 | 2019-08-06 | Facebook, Inc. | Chromatic dispersion management |
US10425331B2 (en) | 2017-10-04 | 2019-09-24 | Facebook, Inc. | Pre-routing device for data centers |
US10476816B2 (en) | 2017-09-15 | 2019-11-12 | Facebook, Inc. | Lite network switch architecture |
US10645027B2 (en) | 2016-09-30 | 2020-05-05 | Facebook, Inc. | Network switches configured to employ optical or electrical interfaces |
US10873544B2 (en) | 2017-09-14 | 2020-12-22 | Facebook, Inc. | Switching using a power bar pass-through card |
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