US0096.90065B2
`
`(12) United States Patent
`Wiltjer et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 9,690,065 B2
`Jun. 27, 2017
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`(54)
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`(71)
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`HIGH DENSITY FIBERENCLOSURE AND
`METHOD
`
`Applicant: Panduit Corp., Tinley Park, IL (US)
`Inventors: Jerry A. Wiltjer, Frankfort, IL (US);
`Shaun P. Brouwer, St. John, IN (US);
`Gregory L. Kuffel, Plainfield, IL (US);
`Joel D. Kwasny, Romeoville, IL (US);
`Kai C. Lui. Des Plaines, IL (US);
`Benjamin S. Novak, Lansing, IL (US);
`Joseph E. Sanders, Elwood, IL (US)
`Assignee: Panduit Corp., Tinley Park, IL (US)
`Notice:
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`Appl. No.: 14/848,757
`Filed:
`Sep. 9, 2015
`
`Prior Publication Data
`US 2016/OO77298 A1
`Mar. 17, 2016
`
`Related U.S. Application Data
`Provisional application No. 62/049,442, filed on Sep.
`12, 2014.
`
`(2006.01)
`
`Int. C.
`GO2B 6/44
`U.S. C.
`CPC ......... G02B 6/4453 (2013.01); G02B 6/4452
`(2013.01); G02B 6/4455 (2013.01)
`Field of Classification Search
`CPC. G02B 6/4453; G02B 6/4455; G02B 6/4452
`See application file for complete search history.
`
`
`
`(56)
`
`References Cited
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`U.S. PATENT DOCUMENTS
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`(Continued)
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`back page, 2013 (3 pgs.).
`
`(Continued)
`Primary Examiner — Ryan Lepisto
`(74) Attorney, Agent, or Firm — Christopher S. Clancy;
`James H. Williams; Aimee E. McVady
`(57)
`ABSTRACT
`A high density fiber enclosure system includes a chassis,
`cassette trays, an optional unification clip, cassettes, and an
`optional trunk cable management system. The chassis, cas
`sette trays, and cassettes are configured Such that individual
`cassettes may be installed, removed, and otherwise posi
`tioned for easy access by a user. The unification clip allows
`two adjacent cassette trays to be connected to one other Such
`that cassette trays move as one unit. The trunk cable
`management system is designed to organize trunk cables and
`trunk cable furcation legs as well as relieve strain on the
`trunk cables and trunk cable furcation legs.
`9 Claims, 52 Drawing Sheets
`
`

`

`US 9,690,065 B2
`Page 2
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`

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`US 9,690,065 B2
`Page 3
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`* cited by examiner
`
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`FIG.11
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`Jun. 27, 2017
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`Jun. 27, 2017
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`Jun. 27, 2017
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`Jun. 27, 2017
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`Jun. 27, 2017
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`Jun. 27, 2017
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`US 9,690,065 B2
`
`1.
`HGH DENSITY FIBERENCLOSURE AND
`METHOD
`
`CROSS-REFERENCE TO RELATED
`APPLICATIONS
`
`This application claims the benefit of U.S. Provisional
`Application Ser. No. 62/049,442, filed Sep. 12, 2014, the
`subject matter of which is incorporated by reference in its
`entirety.
`
`BACKGROUND OF THE INVENTION
`
`SUMMARY OF THE INVENTION
`
`45
`
`The present invention provides an enclosure to maximize
`the number of connections available per rack space as well
`as provide for easy, non-disruptive maintenance or replace
`ment of installed optical fiber cables.
`
`50
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`FIG. 1 is an isometric view of the chassis with the front
`access door closed in accordance with an embodiment of the
`present invention.
`FIG. 2 is an isometric view of the chassis with the front
`access door open in accordance with an embodiment of the
`present invention.
`FIG. 3 is an isometric view of the chassis with the front
`door open and chassis cover removed in accordance with an
`embodiment of the present invention.
`FIG. 4 is an isometric view of the chassis with the front
`door open and cassette trays located in the cord move or
`change position and cassette replacement or addition posi
`tion.
`
`55
`
`60
`
`65
`
`10
`
`15
`
`25
`
`30
`
`35
`
`40
`
`This invention relates to data center management, and in
`particular high speed data transport fiber cabling systems.
`Optical fibers allow for transmission of communications
`over longer distances and at higher bandwidths than wire
`cables. Optical fibers are also advantageous for communi
`cation systems because signals suffer less loss than wire
`cables and are immune to electromagnetic interference.
`Optical fibers are therefore often used for high bandwidth,
`long distance applications. One of the primary functions of
`a data center is to provide connections between incoming
`and outgoing optical fiber connections.
`As demand for high bandwidth increases, it is advanta
`geous to use Smaller and/or higher capacity adapters to
`minimize the amount of data center rack space needed per
`optical fiber port. Due to this, many users of data centers are
`transitioning to Smaller Local Connector adapters ("LC
`adapters’) or Multi-fiber Push-on/Pull-off adapters (“MPO
`adapters'). Thus, a rack or enclosure which maximizes the
`number of LC or MPO adapters may be advantageous.
`Additionally, it may be advantageous if a rack or enclosure
`allowed for replacing LC adapters with MPO adapters which
`provide multi-fiber capabilities.
`From time to time, maintenance or replacement of the
`adapters in an optical fiber system becomes necessary.
`However, disturbing the connection between optical fibers
`may cause a disruption in service over the optical wire.
`Therefore, it may also be advantageous to use a rack or
`enclosure system which disturbs a minimal number of
`optical fiber connections during maintenance on other adapt
`CS.
`
`2
`FIG. 5 is an isometric view of the chassis of FIG. 4 with
`one cassette partially removed from the front of the chassis.
`FIG. 6 is a close-up view of the front portion of the
`cassette tray rails as indicated in FIG. 5.
`FIG. 7 is an isometric view of the chassis with a unifi
`cation clip installed.
`FIG. 8 is a close-up view of an installed unification clip
`and cassette tray rails as indicated in FIG. 7.
`FIG. 9 is a close-up view of an installed unification clip
`of FIG. 8 with the unification clip partially installed.
`FIG. 10 is a close-up view of an installed unification clip
`of FIG. 8 with the unification clip removed.
`FIG. 11 is an isometric view of the unification clip from
`the front in accordance with an embodiment of the present
`invention.
`FIG. 12 is an isometric view of the unification clip from
`behind in accordance with an embodiment of the present
`invention.
`FIG. 13 is a perspective view of a tray guide and cassette
`tray rails, in which the top cassette tray rail is in the home
`position, the middle cassette tray rail is in the cord move or
`change position, and the bottom rail is in the cassette
`replacement or addition position.
`FIG. 14 is a broken perspective view of the tray guide and
`cassette tray rails of FIG. 13.
`FIG. 15 is a perspective view of the spring protrusion and
`tray guide detent.
`FIG. 16 is an isometric view of the chassis with the front
`access door open and the cassette trays removed.
`FIG. 17 is a partially exploded isometric view of the
`chassis of FIG. 16.
`FIG. 18 is an isometric view of a rack mounting bracket.
`FIG. 19 is an isometric view of a rack mounting bracket.
`FIG. 20 is an isometric view of a slack management plate.
`FIGS. 21A and 21B are isometric views of a slack
`management plate divider.
`FIG. 22 is a partially exploded isometric view of the
`chassis of FIG. 16.
`FIG. 23 is a partially exploded isometric view of the
`chassis of FIG. 16 with the center tray guide removed.
`FIG. 24 is a partially exploded isometric view of the
`chassis of FIG. 16 with the chassis cover removed.
`FIGS. 25A and 25B are isometric views of a right tray
`guide.
`FIGS. 26A and 26B are isometric views of a center tray
`guide.
`FIGS. 27A and 27B are isometric views of a left tray
`guide.
`FIG. 28 is an isometric view of a cassette tray.
`FIG. 29 is an isometric view of the cassette tray of FIG.
`28 with one cassette in the process of being removed from
`the cassette tray.
`FIG. 30 is an isometric view of the cassette tray of FIG.
`28 with one cassette further in the process of being removed
`from the cassette tray.
`FIG. 31 is an isometric view of the cassette tray of FIG.
`28 with one cassette further in the process of being removed
`from the cassette tray.
`FIG. 32 is an isometric view of a cassette tray with the
`cassettes removed.
`FIG.33 is an exploded isometric view of the cassette tray
`of FIG. 32.
`FIG. 34A is an isometric views of the spring protrusion
`and portion of the cassette tray rail.
`FIG. 34B is a partially exploded isometric view of the
`spring protrusion and cassette tray rail of FIG. 34A.
`
`

`

`US 9,690,065 B2
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`10
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`15
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`3
`FIG. 35A is an isometric view of the cassette flex beam
`and portion of the cassette tray rail.
`FIG. 35B is a partially exploded isometric view of the
`cassette flex beam and cassette tray rail of FIG. 35A.
`FIG. 36A is an isometric view of an LC-MPO cassette in 5
`an upright first position.
`FIG. 36B is an isometric view of an LC-MPO cassette in
`an upside down second position.
`FIG. 37 is a partially exploded isometric view of an LC
`adapter cassette.
`FIG. 38 is an isometric view of an MPO fiber adapter
`panel.
`FIG. 39 is an isometric view of the MPO fiber adapter
`panel of FIG.38 and advancing trunk cable furcation leg to
`be installed into the MPO fiber adapter panel.
`FIG. 40 is an isometric