USRE45153E1 - Fiber optic cable distribution box - Google Patents
Fiber optic cable distribution box Download PDFInfo
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- USRE45153E1 USRE45153E1 US13091851 US201113091851A USRE45153E US RE45153 E1 USRE45153 E1 US RE45153E1 US 13091851 US13091851 US 13091851 US 201113091851 A US201113091851 A US 201113091851A US RE45153 E USRE45153 E US RE45153E
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- Prior art keywords
- cable
- box
- wall
- fiber
- region
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02B6/00—Light guides
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems and boxes with surplus length
- G02B6/4441—[Boxes]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02B6/00—Light guides
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4439—Auxiliary devices
- G02B6/4463—Mechanical aspects of installing cables in ducts or the like
- G02B6/4466—Mechanical aspects of installing cables in ducts or the like for buildings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02B6/00—Light guides
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Auxiliary devices terminating, fan-out, clamping, strain-relieving or like devices
Abstract
Description
This application is a continuation of U.S. patent application Ser. No. 11/728,785 filed Mar. 27, 2007 now U.S. Pat. No. 7,400,814, and entitled “Wall-Mountable Optical Fiber and Cable Management Apparatus”. The '785 application claims priority under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 60/880,169 filed Jan. 13, 2007, and entitled “Multidwelling Unit (MDU) Drop Box for Fiber Optic Cables”.
1. Field of the Invention
The present invention relates to drop or distribution boxes for managing fiber optic cables in the deployment of fiber optic networks at subscriber premises.
2. Discussion of the Known Art
The deployment of fiber optic networks at multi-dwelling units (MDUs) and other subscriber premises, requires the use of so-called cable drop or distribution boxes that are designed for mounting on walls or other structures at the premises. Current industry practice calls for the boxes to have a cable entry port at the left side of the box for receiving a fiber optic cable originating from the network provider, and one or more ports at the right side of the box through which a number of fibers associated with individual subscribers at the premises are routed to connect with fibers in the provider cable. See, for example, Corning Cable Systems, Wall-Mountable Connector Housings, at <www.corningcablesystems.com>, and ADC Telecommunications, Indoor Fiber Distribution Terminals—Customer Premises Equipment (CPE), at <www.adc.com/productsandservices/>. See also, 2007 Multilink Catalog, vol. 24, at pages 87-94, disclosing a family of wall mountable fiber optic cable enclosures available from Multilink, Inc., of Elyria, Ohio, USA.
U.S. Pat. No. 4,976,510 (Dec. 11, 1990) discloses a wall communications outlet wherein cables may enter the outlet through panels inserted at sides of the outlet, or through an opening formed in a backplate of the outlet. Two sets of sidewalls are arranged concentric with the opening in the backplate so that spare lengths of optical fibers can be placed between the sidewalls, according to the patent. International Application No. PCT/IT92/00055 published Nov. 11, 1993, discloses a distribution device for termination of optical ribbon cables. The device has two circular grooves about which a ribbon, and fibers of the ribbon, are wound.
Installation of the known cable boxes by a single worker at a subscriber premises can be difficult and time consuming, however. Further, the known boxes are dimensioned to accommodate older types of fiber optic cables which can not tolerate bend diameters of less than three inches (76.2 mm) without impairing cable performance. Accordingly, the currently available boxes are relatively large, and are not well-suited for widespread deployment of fiber optic networks at multi-dwelling units or other kinds of premises without significant expenditures of time and labor.
According to the invention, a fiber optic cable distribution box includes an interface compartment for interfacing a first set of fibers when routed inside the compartment, with a second set of fibers associated with a cable routed to the box. A drum region extends beneath the interface compartment and includes a cylindrical wall having an axis for supporting a length of a cable wound about the wall. The drum region is constructed so that the box can turn about the axis of the cylindrical wall when a cable is paid out from the drum region. The interface compartment and the drum region are arranged so that the first set of fibers inside the interface compartment, originate from an inside end portion of the cable wound about the wall of the drum region.
For a better understanding of the invention, reference is made to the following description taken in conjunction with the accompanying drawing and the appended claims.
In the drawing:
The box 10 also has a drum region 20 that extends axially upward from a central portion of the base 12. The drum region 20 includes an outer cylindrical wall 22 the outside periphery of which is partially visible in
The cable distribution box 10 also has an interface compartment 30 that is disposed atop the drum region 20, and which has a peripheral side wall 31. In the embodiment of
As mentioned, optical fibers routed into the interface compartment 30 may originate from the inside end portion of a cable wound over the drum region 20 and which passes through the drum wall 22 via the strain relief device 24. In such an application, the fibers are routed through an annular fiber routing region 46 that extends between the outer cylindrical wall 22, and an inner cylindrical wall 48 of the drum region which wall 48 is formed radially inward of the outer wall 22. The strain relief device 24 and the dimensions of the annular fiber routing region 46, are such that individual optical fibers will not be subject to a bend diameter less than that specified for the fibers before entering the interface compartment 30 and terminating in the connectors 44. For example, when using cables of Allwave® Flex™ fiber available from OFS Fitel, the inner wall 48 may have an outside diameter as small as 0.7874 inches (20 mm), and the mean diameter of the fiber routing region 46 may only be about 2.0 inches (50.8 mm).
The sidewall 31 of the interface compartment 30 also has a cable entry or pass through port 50 (
The diameter of the central passage 62 in the tube 60 is preferably sufficient to allow a long narrow tool such as a screwdriver shaft, bolt or other payoff mandrel, to be inserted through the passage from above or below the box 10 so that the tool will act as a spindle about which the box 10 can turn freely. This construction allows a single worker easily to pay out a cable wound on the drum region 20, as may be necessary for a network deployment at a MDU. For example, while holding the handle of an inserted screwdriver in one hand, the worker can use his or her other hand to pull and unwind a desired length of the cable from the drum region 20 while the box 10 is free to turn about the screwdriver shaft.
The box 200 has a single piece cover lid 232 with an integrated hinge 235 for a connector guard or cover 234. Further, a side wall 231 of an interface compartment 230 has a continuous circular disk flange 204 that extends radially outward beneath the compartment 230, parallel to a base 212 of the box. The flange 204 and the base 212 together serve to confine a length of fiber optic cable wound on the outer cylindrical wall 222, within the region between the flange 204 and the base 212. As with the box 10 of
Also, as seen in
Further, as shown in
The cable 260 and its individual fibers are guided over a substantially straight path between the device openings 226, 228, with the aid of a pair of parallel fingers or guides 211 that project upward from the base wall 224c of the device 224 as seen in
Accordingly, the inside end portion of the cable 260 and its individual fibers pass tangentially with respect to the outer cylindrical wall 222 through the cable entry port 225 in the wall, and into the annular fiber routing region 246 of the box 200. Because the yarn surrounding the fibers is anchored to the guides 211 of the strain relief device 224, any force applied externally to the cable 260 when the cable is being wound on or off the outer cylindrical wall 222 of the drum region, will be transferred to the wall 222 in which the device 224 is fixed rather than to the fibers themselves.
Typical MDU cable distribution box installations have single fiber breakouts that egress from the box, wherein each breakout is associated with a corresponding living unit of the premises where the box is installed. Single fiber cables from each living unit are often routed to a box without a terminating connector. The bare ends of these cables can be terminated at the box in various ways. For example, single ended fiber pigtails can be spliced within the box so that splice sleeves are housed in a common space. This requires a chamber or compartment to house the splice in order to prevent damage and to manage fiber slack. Alternatives may include mechanical splicing of the pigtails, which would require a similar chamber or housing. The individual single fiber cables may also be terminated directly with a field installable connector, thus obviating the need for a splice chamber.
The box 300 has an integrated splice chamber or compartment 308 attached or formed underneath the base 312, including a splice tray 309 mounted inside the base. The splice tray 309 may be fixed within the box 300, or affixed directly to a wall. In either case, the box 300 may be installed over the splice compartment 308. Pigtails or terminated ends can then enter or exit a lower section of the compartment through corresponding clearance notches 311 that are cut in a side wall of the base 312.
The connector parking area or block 313 allows terminated fiber ends to be stored while not in use. The block 313 is constructed and dimensioned to receive and secure a selected one of a number of different commercially available connector parking strips 307 (e.g., type SC) in the block 313. This feature enables the future use of alternate connector types without having to replace the box 300, but at the same time allows installers to forego parking
Several latch or security holes 315 may be formed through corresponding feet on the hinged cover lid 332. The latch holes 315 allow the end user to utilize a number of safety lockout methods. For example, one hole 315 can be used with a standard plunger type latching mechanism simply to keep the lid closed. Other holes 315 can be used to receive wire ties, lockout tags, or other security locks.
Each of the subscriber fibers 416 is connected with a corresponding fiber in a cable 418 associated with the box 10 in the ceiling of the subscriber's floor. The cable 418 may be wound initially about the drum region 20 of the box 10, to be partially or fully unwound later for routing to another box 10 that serves as an “aggregation” box which is located, e.g, between a basement 420 and a roof 422 of the MDU 400. The fibers of the cable 418 are terminated in the connectors 44 which, in turn, are connected to the adapters 42 on the internal side of the box connector panel 40.
At the aggregation box 10, each one of the cables 418 containing subscriber fibers from each floor of the MDU 400, enters the aggregation box through its rear pass through port 50 or a faceplate port. As mentioned earlier, the fibers of each cable 418 may be routed inside the box with little if any bending to connect via a multi-fiber connector 44 with a corresponding adapter 42 on the internal side of the box panel 40. A main fiber optic cable 424 serving all subscribers in the MDU 400, is routed between a cable entry box 426 in the basement 420, and the aggregation box 10 in which the main cable fibers connect to the adapters 42 on the external side of the box panel 40 via multifiber connectors 36. A network provider cable 430 is routed to the entry box 426 from outside the MDU 400, and fibers of the cable 430 are connected to corresponding subscriber fibers of the cable 424 inside the entry box 426.
The various embodiments disclosed herein incorporate the following important features in a fiber optic cable distribution box.
1. Reduced physical dimensions for use with newer types of fiber optic cable such as Allwave® Flex™ available from OFS Fitel and which have superior bending performance.
2. An axial drum region that provides for external cable storage and keeps internal fiber routing within safe bending limits.
3. A central through tube that facilitates pay-off of cable wound externally on the drum region, with the use of a common tool such as a screwdriver.
While the foregoing represents preferred embodiments of the invention, it will be understood by those skilled in the art that various modifications and changes may be made without departing from the spirit and scope of the invention, and that the invention includes all such modifications and changes as come within the scope of the following claims.
Claims (27)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88016907 true | 2007-01-13 | 2007-01-13 | |
US11728785 US7400814B1 (en) | 2007-01-13 | 2007-03-27 | Wall-mountable optical fiber and cable management apparatus |
US12156297 US7522806B2 (en) | 2007-01-13 | 2008-05-30 | Fiber optic cable distribution box |
US13091851 USRE45153E1 (en) | 2007-01-13 | 2011-04-21 | Fiber optic cable distribution box |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13091851 USRE45153E1 (en) | 2007-01-13 | 2011-04-21 | Fiber optic cable distribution box |
US14492970 USRE46255E1 (en) | 2007-01-13 | 2014-09-22 | Fiber optic cable distribution box |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date | |
---|---|---|---|---|
US11728785 Continuation US7400814B1 (en) | 2007-01-13 | 2007-03-27 | Wall-mountable optical fiber and cable management apparatus | |
US12156297 Reissue US7522806B2 (en) | 2007-01-13 | 2008-05-30 | Fiber optic cable distribution box |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12156297 Continuation US7522806B2 (en) | 2007-01-13 | 2008-05-30 | Fiber optic cable distribution box |
Publications (1)
Publication Number | Publication Date |
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USRE45153E1 true USRE45153E1 (en) | 2014-09-23 |
Family
ID=39110481
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11728785 Active US7400814B1 (en) | 2007-01-13 | 2007-03-27 | Wall-mountable optical fiber and cable management apparatus |
US12156297 Active US7522806B2 (en) | 2007-01-13 | 2008-05-30 | Fiber optic cable distribution box |
US13091851 Active USRE45153E1 (en) | 2007-01-13 | 2011-04-21 | Fiber optic cable distribution box |
US14492970 Active USRE46255E1 (en) | 2007-01-13 | 2014-09-22 | Fiber optic cable distribution box |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11728785 Active US7400814B1 (en) | 2007-01-13 | 2007-03-27 | Wall-mountable optical fiber and cable management apparatus |
US12156297 Active US7522806B2 (en) | 2007-01-13 | 2008-05-30 | Fiber optic cable distribution box |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US14492970 Active USRE46255E1 (en) | 2007-01-13 | 2014-09-22 | Fiber optic cable distribution box |
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US (4) | US7400814B1 (en) |
EP (1) | EP1944635A3 (en) |
Cited By (8)
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US20140099061A1 (en) * | 2012-10-05 | 2014-04-10 | Corning Cable Systems Llc | Reconfigurable fiber optic cable assemblies and optical connectors |
US20160025946A1 (en) * | 2007-05-07 | 2016-01-28 | Adc Telecommunications, Inc. | Fiber optic enclosure with external cable spool |
US9423584B2 (en) | 2011-06-24 | 2016-08-23 | Commscope Technologies Llc | Fiber termination enclosure with modular plate assemblies |
US9459424B2 (en) | 2008-06-19 | 2016-10-04 | Commscope Technologies Llc | Methods and systems for distributing fiber optic telecommunications services to local area |
US20160327765A1 (en) * | 2015-05-08 | 2016-11-10 | Huawei Technologies Co., Ltd. | Access terminal box component |
US9494757B2 (en) | 2012-02-29 | 2016-11-15 | Commscope Technologies Llc | Fiber optic cable packaging arrangement |
US9684142B2 (en) | 2012-11-07 | 2017-06-20 | CommScope Connectivity Belgium BVBA | Rapid distribution terminal |
US9835814B2 (en) | 2013-11-06 | 2017-12-05 | Adc Czech Republic S.R.O. | Fiber termination point with overlength storage |
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US7400814B1 (en) | 2007-01-13 | 2008-07-15 | Furukawa Electric North America, Inc. | Wall-mountable optical fiber and cable management apparatus |
US7748660B2 (en) * | 2007-06-22 | 2010-07-06 | Ofs Fitel, Llc | Fiber optic rapid spooling tool |
US7756379B2 (en) * | 2007-08-06 | 2010-07-13 | Adc Telecommunications, Inc. | Fiber optic enclosure with internal cable spool |
US7869682B2 (en) | 2007-09-05 | 2011-01-11 | Adc Telecommunications, Inc. | Fiber optic enclosure with tear-away spool |
US8798427B2 (en) | 2007-09-05 | 2014-08-05 | Corning Cable Systems Llc | Fiber optic terminal assembly |
EP2285546A4 (en) * | 2008-05-27 | 2014-03-12 | Adc Telecommunications Inc | Flexible extruded cable molding system, methods, and tools |
GB0812260D0 (en) * | 2008-07-04 | 2008-08-13 | Tyco Electronics Raychem Nv | Optical fibre coupling device and method |
US8265447B2 (en) * | 2008-09-16 | 2012-09-11 | Adc Telecommunications, Inc. | Modular fiber optic enclosure with external cable spool |
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US8879882B2 (en) | 2008-10-27 | 2014-11-04 | Corning Cable Systems Llc | Variably configurable and modular local convergence point |
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CN202149946U (en) * | 2009-01-16 | 2012-02-22 | 新峤网络设备(上海)有限公司 | Optical fiber access terminal and interface protection fiber access terminal cover |
US8170391B2 (en) * | 2009-02-11 | 2012-05-01 | Adc Telecommunications, Inc. | Fiber optic strain relief assembly |
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US8929706B2 (en) * | 2009-08-31 | 2015-01-06 | Cisco Technology, Inc. | Fiber optic cable storage enclosure |
US8467651B2 (en) | 2009-09-30 | 2013-06-18 | Ccs Technology Inc. | Fiber optic terminals configured to dispose a fiber optic connection panel(s) within an optical fiber perimeter and related methods |
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US9547144B2 (en) | 2010-03-16 | 2017-01-17 | Corning Optical Communications LLC | Fiber optic distribution network for multiple dwelling units |
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Also Published As
Publication number | Publication date | Type |
---|---|---|
EP1944635A3 (en) | 2008-10-08 | application |
US7400814B1 (en) | 2008-07-15 | grant |
EP1944635A2 (en) | 2008-07-16 | application |
US7522806B2 (en) | 2009-04-21 | grant |
USRE46255E1 (en) | 2016-12-27 | grant |
US20080273854A1 (en) | 2008-11-06 | application |
US20080170831A1 (en) | 2008-07-17 | application |
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