GB2272115A - Seal arrangement for a cable splice closure - Google Patents
Seal arrangement for a cable splice closure Download PDFInfo
- Publication number
- GB2272115A GB2272115A GB9223013A GB9223013A GB2272115A GB 2272115 A GB2272115 A GB 2272115A GB 9223013 A GB9223013 A GB 9223013A GB 9223013 A GB9223013 A GB 9223013A GB 2272115 A GB2272115 A GB 2272115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cover
- base
- cable splice
- splice closure
- tapering
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/06—Cable terminating boxes, frames or other structures
- H02G15/076—Cable terminating boxes, frames or other structures for multi-conductor cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
Abstract
A cable splice closure comprises a base (10) having ports (16) for the entry of cables to be spliced 1 and a tubular cover (30) for sliding axially over a peripheral surface (20) of the base (10), the surface 20 tapering towards the end from which the cover (30) is applied and carrying an O-ring seal (24) which is engaged by the cover (30) and rolled along the tapering surface (20) as the cover is slid onto the base. Thus, as the tubular cover (30) is slid onto the base (10), the O-ring (24) is rolled into a position where it is more firmly gripped between the cover (30) and base (10), to seal more effectively. <IMAGE>
Description
Cable Splice Closure
This invention relates to a cable splice closure, particularly for communications cables (including optical fibre cables).
Typically a closure for cable splices comprises a base having ports for the entry of the cables, and a tubular cover which is closed at one end and arranged to fit at its other end around the periphery of the base, the cover when fitted enclosing splices which have been made between the cables. It is necessary to form a seal between the base and the end of the cover and typically a clamping arrangement is used.
We have now devised a cable splice closure which includes a simple but effective seal between the cover and base.
In accordance with this invention there is provided a cable splice closure which comprises a base having ports for the entry of cables to be spliced, and a tubular cover for sliding axially over a peripheral surface of the base, said surface tapering towards the end from which the cover is applied and carrying an O-ring seal which is engaged by the cover and rolled along said tapering surface as the cover is slid onto the base.
Thus, as the tubular cover is slid onto the base, the
O-ring seal is rolled into a position where it is more firmly gripped between the cover and the base, and so seals effectively.
A quantity of sealing composition e.g. grease may be applied to the tapering surface. This may be applied either in the field immediately before the cover is slid onto the base, or in the factory (in which case it is provided with a temporary protection, e.g. a length of tape wound around the base to cover the grease).
Also in accordance with this invention there is provided a base for a cable splice closure, the base comprising ports for the entry of cables to be spliced, and a peripheral surface over which a tubular cover member is to be axially slid, said surface tapering towards the end from which the cover is to be applied and carrying an O-ring seal arranged to be engaged by the cover and rolled along said tapering surface as the cover is slid onto the base.
An embodiment of this invention will now be described by way of example only and with reference to the accompanying drawings, in which:
FIGURE 1 is an end view of a cable splice closure in accordance with this invention;
FIGURE 2 is a longitudinal section through the cable splice closure, on the line II-III shown in Figure 1;
FIGURE 3 is a longitudinal section through the cable splice closure, on the line III-III shown in Figure 1; and
FIGURE 4 comprises sectional views to illustrate diagrammatically the manner in which an 0-ring of the closure is displaced as a tubular cover is slid onto the closure base.
Referring to Figures to 1 to 3 of the drawings, there is shown a cable splice closure which comprises a base 10 and a tubular cover 30, each of plastics material. The base 10 comprises a tubular portion 12 and an end wall 14, with a plurality of tubular projections e.g. 16 extending outwards from its end wall 14 and forming cable entry ports. The tubular portion 12 has a peripheral surface 18 formed with a groove 20, on edge of the groove being formed by a ring 22 applied to the end of the tubular portion 12 of the base. The peripheral surface of the tubular portion 12, within the groove 20, tapers in the axial direction and carried an 0ring 24.
The tubular cover 30 is closed at one end and its other end is dimensioned as a sliding fit over the outside of the tubular portion 12.
As shown in Figure 4, as the tubular cover 30 is slid over the tubular portion 12 of the base, its inner surface engages the 0-ring 24 and causes the latter to roll along the tapering surface of the groove 20, from the smaller-diameter side to the larger-diameter side of the groove. Thus, the 0ring 24 becomes more firmly gripped between the inner surface of the cover 30 and the outer periphery of the base 10, to form an effective seal. The rolling of the 0-rig imparts a twisting action to it, and if at its final position the 0-ring has been rolled substantially more than 50% (say 75%) of its peripheral length, then it has a natural tendency to roll the remaining amount back to its original configuration: accordingly, the 0ring, in its final position, exerts a twisting force in a direction urging the tubular cover onto the base.
Catches may be provided to lock the cover onto the base: in the example shown, the cover has two longitudinally projecting flexible catches 32 to engage radially projecting stops 26 on the base 10.
The groove 20 may be filled or partially filled with grease to improve the seal. The grease may be applied in the field, immediately prior to sliding the cover 30 onto the base: alternatively the grease may be applied in the factory, in which case it is preferably protected by a length of tape would around the base over the groove 20.
As shown, the outer end of the cover 30 may be formed with a projection 32 defining a groove: this is for mounting the closure to a support rail, but also a suitable tool can be engaged into the groove for pulling the cover from the base 10.
Claims (6)
1) A cable splice closure which comprises a base having ports for the entry of cables to be spliced, and a tubular cover for sliding axially over a peripheral surface of the base, said surface tapering towards the end from which the cover is applied and carrying an 0-ring seal which is engaged by the cover and rolled along said tapering surface as the cover is slid onto the base.
2) A cable splice closure as claimed in claim 1, arranged so that as the 0-ring is rolled along said tapering surface as the cover is slid onto the base, the 0-ring is rolled substantially more than 50% of its peripheral length so that in its final position the 0-ring exerts a twisting force in a direction urging the tubular cover onto the base.
3) A cable splice closure as claimed in claim 1 or 2, further comprising a quantity of sealing composition applied to said tapering surface.
4) A cable splice closure as claimed in any preceding claim, in which an outer end of said cover is formed with a projection defining a groove for mounting the closure to a support rail.
5) A cable splice closure substantially as herein described with reference to the accompanying drawings.
6) A base for a cable splice closure, the base comprising ports for the entry of cables to be spliced, and a peripheral surface over which a tubular cover member is to be axially slid, said surface tapering towards the end from which the cover is applied and carrying an 0-ring seal arranged to be engaged by the cover and rolled along said tapering surface as the cover is slid onto the base.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9223013A GB2272115B (en) | 1992-11-03 | 1992-11-03 | Cable splice closure |
PCT/GB1993/002256 WO1994010732A1 (en) | 1992-11-03 | 1993-11-02 | Cable splice closure |
DE69305181T DE69305181T2 (en) | 1992-11-03 | 1993-11-02 | CABLE SPLICE CLOSURE |
AU53753/94A AU672065B2 (en) | 1992-11-03 | 1993-11-02 | Cable splice closure |
US08/433,389 US5610369A (en) | 1992-11-03 | 1993-11-02 | Cable splice closure |
EP93924155A EP0667985B1 (en) | 1992-11-03 | 1993-11-02 | Cable splice closure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9223013A GB2272115B (en) | 1992-11-03 | 1992-11-03 | Cable splice closure |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9223013D0 GB9223013D0 (en) | 1992-12-16 |
GB2272115A true GB2272115A (en) | 1994-05-04 |
GB2272115B GB2272115B (en) | 1996-09-04 |
Family
ID=10724456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9223013A Expired - Fee Related GB2272115B (en) | 1992-11-03 | 1992-11-03 | Cable splice closure |
Country Status (6)
Country | Link |
---|---|
US (1) | US5610369A (en) |
EP (1) | EP0667985B1 (en) |
AU (1) | AU672065B2 (en) |
DE (1) | DE69305181T2 (en) |
GB (1) | GB2272115B (en) |
WO (1) | WO1994010732A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2297810A (en) * | 1995-02-11 | 1996-08-14 | Egerton A C Ltd | Closure Apparatus |
WO1996024976A1 (en) * | 1995-02-11 | 1996-08-15 | A.C. Egerton Limited | Closure apparatus |
EP0774819A3 (en) * | 1995-11-17 | 1997-07-02 | Bowthorpe Plc | |
WO1997043916A1 (en) * | 1996-05-23 | 1997-11-27 | Tecom Services Ag | Tight-sealing cigar case with continuously pre-adjustable closure distance |
US6069320A (en) * | 1993-07-30 | 2000-05-30 | Etcon Corporation | Cable splice protector |
EP2267503A1 (en) * | 2004-03-08 | 2010-12-29 | ADC Telecommunications, Inc. | Fiber access terminal |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08118727A (en) * | 1994-10-28 | 1996-05-14 | Canon Inc | Method and apparatus for correcting recorder head, recording head corrected by the same apparatus and recorder using the same head |
US6329601B1 (en) * | 1996-06-17 | 2001-12-11 | David L. Bulford | Service wire splice housing |
EP1043612A3 (en) * | 1999-04-09 | 2000-12-13 | Itt Manufacturing Enterprises, Inc. | Optical fibre connector |
DE202017101492U1 (en) * | 2017-03-15 | 2018-06-26 | Wieland Electric Gmbh | connection adapter |
CN111615227B (en) * | 2020-04-22 | 2022-06-14 | 北京嘉洁能科技股份有限公司 | Shielding type carbon fiber heating cable |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2188747A (en) * | 1986-04-03 | 1987-10-07 | Bowthorpe Hellermann Ltd | Joint closure for telecommunications cables |
GB2227893A (en) * | 1989-01-05 | 1990-08-08 | Bowthorpe Hellermann Ltd | Electrical or optical fibre lead through |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB760940A (en) * | 1953-10-16 | 1956-11-07 | James Everard Pridham | Improvements in or relating to fluid-tight closure or coupling devices |
NL253901A (en) * | 1959-07-18 | |||
GB1138337A (en) * | 1965-04-09 | 1969-01-01 | Atomic Energy Authority Uk | Improvements relating to sealed connections to mineral insulated cables |
DE3414693A1 (en) * | 1983-07-04 | 1985-01-24 | Karl 6969 Hardheim Hock | CONNECTOR |
GB2148613A (en) * | 1983-10-25 | 1985-05-30 | Isopad Ltd | Electrical heating tapes |
ZA861765B (en) * | 1985-03-14 | 1986-10-29 | Trygve Eric Hvidsten | Cable splice closure |
GB8608109D0 (en) * | 1986-04-03 | 1986-05-08 | Bowthorpe Hellermann Ltd | Joint closure |
US4902855A (en) * | 1988-10-25 | 1990-02-20 | Minnesota Mining And Manufacturing Company | End seal for splice closure |
EP0452383B1 (en) * | 1989-01-05 | 1994-12-07 | Bowthorpe-Hellermann Limited | Splice closures |
ATE91769T1 (en) * | 1989-03-31 | 1993-08-15 | Geberit Ag | SEALING AND DETACHABLE CONNECTION OF ONE OR MORE PLASTIC PIPES WITH A CONNECTOR. |
GB2240436B (en) * | 1989-12-14 | 1994-06-22 | Pratley Investments | Shroud for a cable gland |
-
1992
- 1992-11-03 GB GB9223013A patent/GB2272115B/en not_active Expired - Fee Related
-
1993
- 1993-11-02 AU AU53753/94A patent/AU672065B2/en not_active Ceased
- 1993-11-02 DE DE69305181T patent/DE69305181T2/en not_active Expired - Fee Related
- 1993-11-02 EP EP93924155A patent/EP0667985B1/en not_active Expired - Lifetime
- 1993-11-02 US US08/433,389 patent/US5610369A/en not_active Expired - Fee Related
- 1993-11-02 WO PCT/GB1993/002256 patent/WO1994010732A1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2188747A (en) * | 1986-04-03 | 1987-10-07 | Bowthorpe Hellermann Ltd | Joint closure for telecommunications cables |
GB2227893A (en) * | 1989-01-05 | 1990-08-08 | Bowthorpe Hellermann Ltd | Electrical or optical fibre lead through |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6069320A (en) * | 1993-07-30 | 2000-05-30 | Etcon Corporation | Cable splice protector |
GB2297810A (en) * | 1995-02-11 | 1996-08-14 | Egerton A C Ltd | Closure Apparatus |
WO1996024976A1 (en) * | 1995-02-11 | 1996-08-15 | A.C. Egerton Limited | Closure apparatus |
GB2297810B (en) * | 1995-02-11 | 1997-12-17 | Egerton A C Ltd | Closure apparatus |
EP0774819A3 (en) * | 1995-11-17 | 1997-07-02 | Bowthorpe Plc | |
WO1997043916A1 (en) * | 1996-05-23 | 1997-11-27 | Tecom Services Ag | Tight-sealing cigar case with continuously pre-adjustable closure distance |
EP2267503A1 (en) * | 2004-03-08 | 2010-12-29 | ADC Telecommunications, Inc. | Fiber access terminal |
Also Published As
Publication number | Publication date |
---|---|
GB9223013D0 (en) | 1992-12-16 |
AU672065B2 (en) | 1996-09-19 |
EP0667985B1 (en) | 1996-10-02 |
DE69305181D1 (en) | 1996-11-07 |
EP0667985A1 (en) | 1995-08-23 |
AU5375394A (en) | 1994-05-24 |
DE69305181T2 (en) | 1997-03-06 |
WO1994010732A1 (en) | 1994-05-11 |
GB2272115B (en) | 1996-09-04 |
US5610369A (en) | 1997-03-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20031103 |