CA1108904A - Protection case for optical fiber splices - Google Patents
Protection case for optical fiber splicesInfo
- Publication number
- CA1108904A CA1108904A CA354,801A CA354801A CA1108904A CA 1108904 A CA1108904 A CA 1108904A CA 354801 A CA354801 A CA 354801A CA 1108904 A CA1108904 A CA 1108904A
- Authority
- CA
- Canada
- Prior art keywords
- protection case
- base
- sides
- packet
- extending
- 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.)
- Expired
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims description 2
- 239000012858 resilient material Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- NSMXQKNUPPXBRG-SECBINFHSA-N (R)-lisofylline Chemical compound O=C1N(CCCC[C@H](O)C)C(=O)N(C)C2=C1N(C)C=N2 NSMXQKNUPPXBRG-SECBINFHSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4453—Cassettes
- G02B6/4454—Cassettes with splices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/44528—Patch-cords; Connector arrangements in the system or in the box
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4452—Distribution frames
- G02B6/44524—Distribution frames with frame parts or auxiliary devices mounted on the frame and collectively not covering a whole width of the frame or rack
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
PROTECTION CASE FOR OPTICAL FIBER SPLICES
Abstract of the Disclosure A protection case for optical fiber splices is in the form of an elongate box having ducts along each side and a plurality of packet members pivotally attached to the bottom of the case in overlapping relationship. A holder in each packet will hold at least one splice, or an attenuator and two associated splices. A cover fastens over the base of the case. The packets have the form of shallow boxes and extra fiber is coiled round in a packet, being retained by turned in edges of the top, sides and bottom.
- i -
Abstract of the Disclosure A protection case for optical fiber splices is in the form of an elongate box having ducts along each side and a plurality of packet members pivotally attached to the bottom of the case in overlapping relationship. A holder in each packet will hold at least one splice, or an attenuator and two associated splices. A cover fastens over the base of the case. The packets have the form of shallow boxes and extra fiber is coiled round in a packet, being retained by turned in edges of the top, sides and bottom.
- i -
Description
This invention reldtes to a protec~ion case for opkical fiber splices, the case accommodat;ng a plurality of spliced pairs of optical fibers, for telecommunications.
The protection case provides an interface between "intra-office" fiber cables and individually buffered "patch-cord" ~ibers which route to circuit packs. The case prov;des mounting or support posit;ons for splices, attenuators if desired, and spare Fiber lengths also if desired.
Broadly a protection case has an elongake box, access at one end for incoming fiber cable or cables, egress for fibers, and a plurality of packet members or assemblies hingedly atkached to the base of the box, the packet members extending laterally across the box and pivsting about axes transverse to the length of the box.
The invention will be readily understood by the following description of an embodiment, by way of example, in conjunction with khe accompanying drawings, in which:-Figure 1 is a perspective view of a protection case, wi~h the lid removed, and packet members illustrated in each of the two possible positions;
Figure 2 is a top plan view of the base member, with cover ; removed, and some packet members in positlon;
Figure 3 is a cross-section on the line 3-3 of Figure 2;
Figure 4 is a plan view of a packet member ko a larger scale, Figure 5 is a edge view of a packet member in the base member, similar to Figure 2, to a larger scale, illustrating khe optical splices3 and attenuator, in position.
Figures 6 and 7 illustrate, to a larger scale, a packet member with, respectively, a splice in position and an attenuator and two splices in position.
As illustrated in Figure 1, the protection case comprises an elongate base member 10, a cover 11, a trough-shaped inserk 12 and a plurality of packet members 13.
Describing each member in more detail, with respect to Figures 1, 2 and 3, the base member 10 has upturned sides 15 and one end 16 joined to the sides 15. At the other end o~ the base member, the base is extended at 17 beyond the sides 15 and a web 18 extends across the base member joining the ends of the sides, and defining, with an upturned end 19, a trough 20. Apertures 21 and 22 are formed in the web 18. Slots 23 are formed in the extension 17, the slots extending up into the end 19.
Within the base member 10 is the trough-shaped insert 12.
The insert has a ~lat base attached, as by spot welding, to the base o~
the base member 10, and has upturned sides 25. The sides 25 are spaced from and extend parallel to the sides 15 to form ducts 26. The sides 25 are slotted at 27 to form comb-like structures along each side. Instead of a single trough shaped insert, two spaced apart inserts can be provided, to form the ducts 26.
Within the insert 12 are mounted a plurality o~ the packet members or assemblies 13. As illustrated in more detail in Figures 4 and 5, each packet member is somewhat rectangular in plan form, having a flat main web portion 29, with a top 30, and t~o sides 31 extending normal thereto. The bottom is not straight but has two inclined sections 32 Joined by a short base section 33. The top 30 and sides 31 are turned up and over for at least part of their lengths, as illustrated at 34~ to ' ' ,,,. :; , ,, . ' ' .
`
,~ 8~4 form channels, and also the short base sect;on 33 is turned up and over, at 35 to form a further channel. Thus each packet member forms what is effectively a shallow box. At the short base section 33 a cloth hinge 36 is provided by which a packet member is attached or connected ko khe base of the insert 120 While the hinges are indicated in Figure 3, a hinge is seen more clearly in Figure 5.
Positioned in each packet member is a holdlng member 40 conveniently of molded or extruded resilient material such as foam rubber.
Each member 40 has a number of transverse grooves 41 at each end. Over the holding member 40 is a flexible retaining member 42 which snaps under the turned over portions 34 and 35 on the top 30 and short base section 23. Th;s is seen in Figure 5.
As seen in Figure 2, a fiber cable 45 enters via trough 20 and through aperture 21. Strain relief is provided by a strain relief bracket 46. Instead of a single optical fiber cable, up to four cables can be connected, entering and exiting via trough 20 and apertures 21 and 22, incoming cables being gripped at the strain relief bracket 46. In addition each cable can be individually gripped by strain relief members attached to a flange 47 extending For part of the one side 15. The strain members, not shown, are attached to the flange 47 by screws 48. This is the ingoing side, for the "intra-office" cables.
At ~he other side of ~he case, optical fibers would emerge into the right hand duct of Figure 2~ and individual strain members can be attached to a flange 49 on the other side 15 by screws 50. The fibers pass along the duct 2Ç, exiting via aperture 22 (Figure 1) into the trough 20. A further strain relief bracket can be prov~ded at 51 for outgoing cables.
The cover 11 as seen in Figure 1, has a ton~ue 52 formed at an end 53 which fits into a slot, not shown, in end 16 of the base member.
At the other end 54, the cover overlaps the top of the web 1~, ~hich is higher than the sides 15 of the base member, and also has short corner pieces 55. The cover is thus located at both ends, ~he sides of the cover butting on to the sides 15 of the base member~ The cover does not extend over the trough 20 in the example illustratedO The cover is retained at end 54 by screws passing through holes 56 into nuts or similar members attached to the bottom of the base member.
Figures 6 and 7 illustrate the alternate arrangements of a splice positioned in a packet mem~er and an attenuator with related splices positioned in a packet member. Normally a packet member holds one splice, such as when a pair of fibers, one from each cable, is spliced.
Such is seen in Figure 6, the splice indicated at 50, or an attenuator which is connected to the pair oF fibers, one from each cable, by two splices. In Figure 7, the attenuator is indicated at 51 and the two splies at 52. The fibers are coiled round in the packet, as indicated at 53. The fibers enter from a duct 26 and pass under the turned over portion 35. Similarly fibers exit from under the turned over portion 35 to a duct 26. In both instances the fibers also pass through one of the slots 27. By so arranging for the fibers to pass under the turned over portion, both on initial entry and prior to exit, the fibers rotate as a packet member is pivotted up or down, rather than bend. This avoids possible damage or breakage. There will be extra fiber before and after a splice, as in Figure 6, and extra fiber before one splice, after the other splice and between each splice and the attenuator, as in Figure 7. It may be necessary to vary the diameter of the coil of fiber, and fiber can be 1: ~
.. -- . .. ... . . . . .
`' ' ' ~, , ' . . ` -- . , .
.
positioned in any spare groove ~1 to make adjustment for the length of fiber to be accommodated.
In the particular example, sixkeen packet members or assemblies are provided and the protection case is dimensioned for installation on standard equipment racks. The protection case has a low profile and can be mounted on the back of equipment racks which have no available rack space. Again, in the example, the packet members are approximately three inches by 3 3/4 inches, but these dimensions can vary, as can the number of splices and/or attenuators carried by each packet member. Conveniently the splices and attenuators are a push fit into the grooves 41j being retained by the resilience of the material of the member 40, and the strap ~2. However other ways of mounting the splices and attenuators can be used.
The invention provides a compact assembly having a low profile and yet which allows ready access to a particular splice and/or attenuator by simply flipping up the packet members prior to that packet member to which access is required. In the packaged or stored position the packet members lie at an angle of about 30 to the horizontal, and when flipped up move to approximately 15 beyond the vertical. This can be achieved by a self-limiting effect o~ the hinges or by a suitable stop at the end remote from the entry and exit trough 17. For initial location of the packet members small holes or other locating marks 60 can be provided in the brse of the insert 12.
:
,' ' ';
,
The protection case provides an interface between "intra-office" fiber cables and individually buffered "patch-cord" ~ibers which route to circuit packs. The case prov;des mounting or support posit;ons for splices, attenuators if desired, and spare Fiber lengths also if desired.
Broadly a protection case has an elongake box, access at one end for incoming fiber cable or cables, egress for fibers, and a plurality of packet members or assemblies hingedly atkached to the base of the box, the packet members extending laterally across the box and pivsting about axes transverse to the length of the box.
The invention will be readily understood by the following description of an embodiment, by way of example, in conjunction with khe accompanying drawings, in which:-Figure 1 is a perspective view of a protection case, wi~h the lid removed, and packet members illustrated in each of the two possible positions;
Figure 2 is a top plan view of the base member, with cover ; removed, and some packet members in positlon;
Figure 3 is a cross-section on the line 3-3 of Figure 2;
Figure 4 is a plan view of a packet member ko a larger scale, Figure 5 is a edge view of a packet member in the base member, similar to Figure 2, to a larger scale, illustrating khe optical splices3 and attenuator, in position.
Figures 6 and 7 illustrate, to a larger scale, a packet member with, respectively, a splice in position and an attenuator and two splices in position.
As illustrated in Figure 1, the protection case comprises an elongate base member 10, a cover 11, a trough-shaped inserk 12 and a plurality of packet members 13.
Describing each member in more detail, with respect to Figures 1, 2 and 3, the base member 10 has upturned sides 15 and one end 16 joined to the sides 15. At the other end o~ the base member, the base is extended at 17 beyond the sides 15 and a web 18 extends across the base member joining the ends of the sides, and defining, with an upturned end 19, a trough 20. Apertures 21 and 22 are formed in the web 18. Slots 23 are formed in the extension 17, the slots extending up into the end 19.
Within the base member 10 is the trough-shaped insert 12.
The insert has a ~lat base attached, as by spot welding, to the base o~
the base member 10, and has upturned sides 25. The sides 25 are spaced from and extend parallel to the sides 15 to form ducts 26. The sides 25 are slotted at 27 to form comb-like structures along each side. Instead of a single trough shaped insert, two spaced apart inserts can be provided, to form the ducts 26.
Within the insert 12 are mounted a plurality o~ the packet members or assemblies 13. As illustrated in more detail in Figures 4 and 5, each packet member is somewhat rectangular in plan form, having a flat main web portion 29, with a top 30, and t~o sides 31 extending normal thereto. The bottom is not straight but has two inclined sections 32 Joined by a short base section 33. The top 30 and sides 31 are turned up and over for at least part of their lengths, as illustrated at 34~ to ' ' ,,,. :; , ,, . ' ' .
`
,~ 8~4 form channels, and also the short base sect;on 33 is turned up and over, at 35 to form a further channel. Thus each packet member forms what is effectively a shallow box. At the short base section 33 a cloth hinge 36 is provided by which a packet member is attached or connected ko khe base of the insert 120 While the hinges are indicated in Figure 3, a hinge is seen more clearly in Figure 5.
Positioned in each packet member is a holdlng member 40 conveniently of molded or extruded resilient material such as foam rubber.
Each member 40 has a number of transverse grooves 41 at each end. Over the holding member 40 is a flexible retaining member 42 which snaps under the turned over portions 34 and 35 on the top 30 and short base section 23. Th;s is seen in Figure 5.
As seen in Figure 2, a fiber cable 45 enters via trough 20 and through aperture 21. Strain relief is provided by a strain relief bracket 46. Instead of a single optical fiber cable, up to four cables can be connected, entering and exiting via trough 20 and apertures 21 and 22, incoming cables being gripped at the strain relief bracket 46. In addition each cable can be individually gripped by strain relief members attached to a flange 47 extending For part of the one side 15. The strain members, not shown, are attached to the flange 47 by screws 48. This is the ingoing side, for the "intra-office" cables.
At ~he other side of ~he case, optical fibers would emerge into the right hand duct of Figure 2~ and individual strain members can be attached to a flange 49 on the other side 15 by screws 50. The fibers pass along the duct 2Ç, exiting via aperture 22 (Figure 1) into the trough 20. A further strain relief bracket can be prov~ded at 51 for outgoing cables.
The cover 11 as seen in Figure 1, has a ton~ue 52 formed at an end 53 which fits into a slot, not shown, in end 16 of the base member.
At the other end 54, the cover overlaps the top of the web 1~, ~hich is higher than the sides 15 of the base member, and also has short corner pieces 55. The cover is thus located at both ends, ~he sides of the cover butting on to the sides 15 of the base member~ The cover does not extend over the trough 20 in the example illustratedO The cover is retained at end 54 by screws passing through holes 56 into nuts or similar members attached to the bottom of the base member.
Figures 6 and 7 illustrate the alternate arrangements of a splice positioned in a packet mem~er and an attenuator with related splices positioned in a packet member. Normally a packet member holds one splice, such as when a pair of fibers, one from each cable, is spliced.
Such is seen in Figure 6, the splice indicated at 50, or an attenuator which is connected to the pair oF fibers, one from each cable, by two splices. In Figure 7, the attenuator is indicated at 51 and the two splies at 52. The fibers are coiled round in the packet, as indicated at 53. The fibers enter from a duct 26 and pass under the turned over portion 35. Similarly fibers exit from under the turned over portion 35 to a duct 26. In both instances the fibers also pass through one of the slots 27. By so arranging for the fibers to pass under the turned over portion, both on initial entry and prior to exit, the fibers rotate as a packet member is pivotted up or down, rather than bend. This avoids possible damage or breakage. There will be extra fiber before and after a splice, as in Figure 6, and extra fiber before one splice, after the other splice and between each splice and the attenuator, as in Figure 7. It may be necessary to vary the diameter of the coil of fiber, and fiber can be 1: ~
.. -- . .. ... . . . . .
`' ' ' ~, , ' . . ` -- . , .
.
positioned in any spare groove ~1 to make adjustment for the length of fiber to be accommodated.
In the particular example, sixkeen packet members or assemblies are provided and the protection case is dimensioned for installation on standard equipment racks. The protection case has a low profile and can be mounted on the back of equipment racks which have no available rack space. Again, in the example, the packet members are approximately three inches by 3 3/4 inches, but these dimensions can vary, as can the number of splices and/or attenuators carried by each packet member. Conveniently the splices and attenuators are a push fit into the grooves 41j being retained by the resilience of the material of the member 40, and the strap ~2. However other ways of mounting the splices and attenuators can be used.
The invention provides a compact assembly having a low profile and yet which allows ready access to a particular splice and/or attenuator by simply flipping up the packet members prior to that packet member to which access is required. In the packaged or stored position the packet members lie at an angle of about 30 to the horizontal, and when flipped up move to approximately 15 beyond the vertical. This can be achieved by a self-limiting effect o~ the hinges or by a suitable stop at the end remote from the entry and exit trough 17. For initial location of the packet members small holes or other locating marks 60 can be provided in the brse of the insert 12.
:
,' ' ';
,
Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:-
1. A protection case for optical fiber splices, comprising:
an elongate box having a base member and a cover attached to the base member;
an insert in said base member defining ducts at each side;
a plurality of packet members pivotally attached to the base of the insert, the packet members in an overlapping relationship when pivotted down in the insert;
a holding member in each packet member, for holding at least one splice;
access at one end of the box for incoming fiber cable and outgoing fiber cable.
an elongate box having a base member and a cover attached to the base member;
an insert in said base member defining ducts at each side;
a plurality of packet members pivotally attached to the base of the insert, the packet members in an overlapping relationship when pivotted down in the insert;
a holding member in each packet member, for holding at least one splice;
access at one end of the box for incoming fiber cable and outgoing fiber cable.
2. A protection case as claimed in claim 1, said base having upturned sides, said insert having sides extending parallel to and spaced from said upturned sides of said base to define troughs.
3. A protection case as claimed in claim 1, each packet member comprising a flat web portion having a top, sides and a bottom, said top sides and bottom turned up and over to form channels.
4. A protection case as claimed in claim 3, said bottom comprising three sections a central base section extending normal to the sides and an inclined section extending from each side to said base section, said inclined sections extending inwardly from said sides in a direction away from said top.
5. A protection case as claimed in claim 4, including hinge means attached to each of said packets at said central base section and to said insert.
6. A protection case as claimed in claim 5, wherein said hinge means is a cloth hinge.
7. A protection case as claimed in claim 3, said holding member in each of said packets comprising a length of molded resilient material extending from adjacent to said top to adjacent to said bottom of a packet, and including a plurality of transverse grooves extending across the holding member.
8. A protection case as claimed in claim 7, including two transverse grooves at each end of the holding member.
9. A protection case as claimed in claim 3, including a flexible retaining member extending from said top to said bottom of each packet, opposite end of a retaining member positioned under the turned over portion at said top and bottom.
10. A protection case as claimed in claim 5, said sides of said insert including slots extending normal to said base, a slot aligned approximately with each hinge means.
11. A protection case as claimed in claim 2, said upturned sides of said base including a flange extending inwardly on each side, and screws in said flanges for attachment of strain relief members thereto.
12. A protection case as claimed in claim 3, said base having an extension at one end, an upturned end member at said one end, a web extending across between the sides of the base, spaced from and parallel to said upturned end and slots formed in said web, the upturned end and said web defining a trough for passage of optical fiber cables into and out of said protection case, and strain relief means in said trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA354,801A CA1108904A (en) | 1980-06-25 | 1980-06-25 | Protection case for optical fiber splices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA354,801A CA1108904A (en) | 1980-06-25 | 1980-06-25 | Protection case for optical fiber splices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1108904A true CA1108904A (en) | 1981-09-15 |
Family
ID=4117264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA354,801A Expired CA1108904A (en) | 1980-06-25 | 1980-06-25 | Protection case for optical fiber splices |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1108904A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2538919A1 (en) * | 1983-01-05 | 1984-07-06 | Telecommunications Sa | DEVICE FOR QUICK CONNECTION OF FIBER OPTIC ENDS |
| FR2556895A1 (en) * | 1983-12-20 | 1985-06-21 | Lignes Telegraph Telephon | DEVICE FOR CONNECTING CABLES, IN PARTICULAR OPTICAL FIBERS |
| FR2566756A1 (en) * | 1984-06-27 | 1986-01-03 | Cit Alcatel | Cable coiling box |
| FR2570196A1 (en) * | 1984-09-10 | 1986-03-14 | Souriau & Cie | Device for storing the terminal portions of optical fibres at the break-out (distribution) heads of multi-fibre cables. |
| US4679896A (en) * | 1985-09-27 | 1987-07-14 | Preformed Line Products Company | Optical fiber splice organizer |
| US4717231A (en) * | 1983-01-05 | 1988-01-05 | Vincent Dewez | Interconnecting and distributing box for optical fibers |
| WO1990006531A1 (en) * | 1988-11-26 | 1990-06-14 | Bowthorpe-Hellermann Limited | Optical fibre jointing |
| US4995728A (en) * | 1988-12-16 | 1991-02-26 | Siemens Aktiengesellschaft | Configuration with several splicing modules |
| US7239789B2 (en) | 2003-10-06 | 2007-07-03 | Preformed Line Products Company | Optical fiber splice case |
-
1980
- 1980-06-25 CA CA354,801A patent/CA1108904A/en not_active Expired
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717231A (en) * | 1983-01-05 | 1988-01-05 | Vincent Dewez | Interconnecting and distributing box for optical fibers |
| EP0116481A1 (en) * | 1983-01-05 | 1984-08-22 | SAT (Société Anonyme de Télécommunications),Société Anonyme | Device for rapidly connecting optical fibre ends |
| FR2538919A1 (en) * | 1983-01-05 | 1984-07-06 | Telecommunications Sa | DEVICE FOR QUICK CONNECTION OF FIBER OPTIC ENDS |
| FR2556895A1 (en) * | 1983-12-20 | 1985-06-21 | Lignes Telegraph Telephon | DEVICE FOR CONNECTING CABLES, IN PARTICULAR OPTICAL FIBERS |
| EP0146478A2 (en) * | 1983-12-20 | 1985-06-26 | Lignes Telegraphiques Et Telephoniques L.T.T. | Joining apparatus for cables, especially optical fibres |
| EP0146478A3 (en) * | 1983-12-20 | 1985-08-14 | Lignes Telegraphiques Et Telephoniques L.T.T. | Joining apparatus for cables, especially optical fibres |
| FR2566756A1 (en) * | 1984-06-27 | 1986-01-03 | Cit Alcatel | Cable coiling box |
| FR2570196A1 (en) * | 1984-09-10 | 1986-03-14 | Souriau & Cie | Device for storing the terminal portions of optical fibres at the break-out (distribution) heads of multi-fibre cables. |
| US4679896A (en) * | 1985-09-27 | 1987-07-14 | Preformed Line Products Company | Optical fiber splice organizer |
| WO1990006531A1 (en) * | 1988-11-26 | 1990-06-14 | Bowthorpe-Hellermann Limited | Optical fibre jointing |
| US5131066A (en) * | 1988-11-26 | 1992-07-14 | Bowthorpe-Hellerman Limited | Optical fibre splice tray arrangement |
| US4995728A (en) * | 1988-12-16 | 1991-02-26 | Siemens Aktiengesellschaft | Configuration with several splicing modules |
| US7239789B2 (en) | 2003-10-06 | 2007-07-03 | Preformed Line Products Company | Optical fiber splice case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |