CA1223311A - Flameproof casings for cable connections - Google Patents
Flameproof casings for cable connectionsInfo
- Publication number
- CA1223311A CA1223311A CA000440385A CA440385A CA1223311A CA 1223311 A CA1223311 A CA 1223311A CA 000440385 A CA000440385 A CA 000440385A CA 440385 A CA440385 A CA 440385A CA 1223311 A CA1223311 A CA 1223311A
- Authority
- CA
- Canada
- Prior art keywords
- sheath
- casing according
- flameproof
- flameproof casing
- plastic
- 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
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
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
-
- 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
- H02G15/08—Cable junctions
Abstract
ABSTRACT OF THE DISCLOSURE
In flameproof casings made of molded plastic for cable connections in telecommunications and power distribution, cable sleeves in particular, a thermoplast molded plastic cover is provided with a dimensionally stable sheath made of a non-combustible material which is highly inflammable and is inert to thermoplasts.
The sheath which may be a wire net can also have a coating made of water glass, silicone plastic, a non-combustible plastic which is highly flame resistant or a foaming fireproofing material.
In flameproof casings made of molded plastic for cable connections in telecommunications and power distribution, cable sleeves in particular, a thermoplast molded plastic cover is provided with a dimensionally stable sheath made of a non-combustible material which is highly inflammable and is inert to thermoplasts.
The sheath which may be a wire net can also have a coating made of water glass, silicone plastic, a non-combustible plastic which is highly flame resistant or a foaming fireproofing material.
Description
3~
BACKGRO WD 0~ TH~ VENTICN
The inverItion reiates to flame~roof casings r~de of the~oplast molded plastics for cable connections in teleco~unications and power distribution systems, in particular for cable sleeves and cable terminals.
Cable sleeves made of plastic as casings for cahle connections in teleco~unications have heen knnwn for some time. The great advantage of cable sleeves made, preferably, of a thermoplast molde~
plastic derives from their easy processability, their elasticity, their low weight, their freedom from corrosion, their lnw per~Rahility to ~ases, their extremely high resistance to violent external ~orces, such as stress due tn impact or falling, their ahsolute protection against accidental contact with electrical voltages and their economical manufacture. Cable sleeves made of thermoplast ~olded plastic, preferably a polyolefine are resistant to a great number of chemical substances. Casings -- for example, cahle sleeves -- made of therMnplast ~olded plastic will, however, ~e destroyed in a ~el~y short time by the external effect of fla~es.
As a result of ruptures in the sleeve casin~, flanes can penetrate to the cable connections, by which means the telecommunications t.ansmission or power distribution can be interrupted. Even in the case of flame-resistant thermoplast ~olded platics, this process cannnt be prevented, since the te~erature in every case exceeds 4nnC, which is above the melting and softening temperatures for thermoplast ~olded plastics. This is particularly true nf the thermoplast molded plastics which, because of the above-mentioned characteristics, are used in cah]e sleeves.
~2~33~
SU RY nF THE INvENTION
It is an ob~iect of the present invention to provide casings made of thermoplast molded plastics for cable connections in telecommu;cations and power distribution, in particular cable sleeves, that prevent a destruction of the cable cnnnectinns under the influence of external flames.
This purpose is accomplished, according to the invention, ~y means of a cover ~ade of thermoplast molded plastic, which includes a sheath that is dimensionally stable and non-combustible and is of low flammability. The ~heath is inert w~th regard to the ther~oplast molded plastic. It can he i~pervious, have s~all fissures, or be porous. Casings equipped with a sheath in accordance with the invention are resistant to the external effects of flames. Ahove all, casin~s equiPped in accordance with the invention retain their outside shape when exposed to external effects of flames. Diffusion flames are dissipated on the surface nf the sheath.
Other features and advantages of the invention will be apparent ~rom the followina description of the preferred embodiments, and from the claims.
For a full understanding o~ the present invention, ~eference should now he made to the following detailed description of the preferred embodiments of the invention and to the accompanying drawings.
~2~
B~IEF DESCRIPTION CF THE ~PAWINGS
Figs. 1 and 2 show views of cable sleeves with sect~ons cut away.
Fig. 3 shows a section through a ca~le sleeve with a seal.
: - 4 -D~AILED DESCRIPTI~
With reference to Figs. 1 and ~ there is shown a wire nRt lO
with a coating 11 wrapped around a ther~oplast cable sleeve 2 comprising a sheath 1. In order to cover the front end area, that is, the area where the cable is introduced, the sheath 1 extends up to the cable ~. In order to give stability to the front end section 4 of the sheath 1, a wire 5 has ~een introduced.
Fig. 3 shows a cable sleeve with a seal 7, consisting of an element made of thermoplast molding plastic 89 which is provided with a flameproof surface sheath 9, pursuant to the invention, to fireproof the end of a ca~le 6.
If the design of a cahle sleeve in accordance with the invention includes a seal 39 this too can ~e protected from flames in accordance with the invention.
Suitable sheaths includes metal films ~ith a thickness of fron n.n2 to 0.5 m~. Preferably, an aluminum fil~ which is provided ~ith an adhesive or has a polymer coating is used. In the latter case, the film can be welded through a heating process onto the sleeve.
It is particularly advantageous to use a web or net made of ~etal wire for the sheath. In this case the width of the mesh of the weh or net should preferably be between O.l and 5 mm. The web or net should ideally be made of a corrosion-resistant material~
such as aluminum, galvanized or nickel-plated steel or co3per.
~ ~ ~ 3t~ 1 Accordinq to a preferred e~bodi~ent of the 1nver,tion, the sheath can cons~st of a web or r-~t made of metal wire and of a silicate or non-combustible plastic that is highly fla~e resist3nt.
The latter can if necessary be applied to a substrate. Suitable materials include hardenable plastics a coating of silicone plastic or water glass. The coating can also consist of a foaming firepronfin~ ~aterial. Accordinn to another advantageous for~ of the inventinn, the web or net is ~ade of Nirosta' ) and coated with a non-combustible plastic that is highly flame resistant. nere tno, coatinas ~ade of hardenable plastics, silicon plastic or foaming fireproofing ~aterlals have proved effective.
E~hodi~ents in accnrdance with the invention, which oan be ~anufactured according to any desired process, are being successful]y used as casinas for cable connections. They are being used particularly in cable sleeves and also for seals that can be used in cable sleeves. In every case, excellent fireproofing against the external effects of flame is achieved.
There has thus been shown and described novel fla~eproof casings for cable connections which fulfills all the object and advantages sought therefor. Many changes, ~odifications, variations and other uses and applications of the subjec~ invention will, however, heco~e apparent to those skilled in the art after considering this specification and the accGmpanying drawings which disclose preferred embndi~ents thereof. All such changes, modifications, variations and other uses and applications which do not depart from the spirit and sco~e of the invention are dee~ed to be covered by the invention which is limited only by the claims which follow.
BACKGRO WD 0~ TH~ VENTICN
The inverItion reiates to flame~roof casings r~de of the~oplast molded plastics for cable connections in teleco~unications and power distribution systems, in particular for cable sleeves and cable terminals.
Cable sleeves made of plastic as casings for cahle connections in teleco~unications have heen knnwn for some time. The great advantage of cable sleeves made, preferably, of a thermoplast molde~
plastic derives from their easy processability, their elasticity, their low weight, their freedom from corrosion, their lnw per~Rahility to ~ases, their extremely high resistance to violent external ~orces, such as stress due tn impact or falling, their ahsolute protection against accidental contact with electrical voltages and their economical manufacture. Cable sleeves made of thermoplast ~olded plastic, preferably a polyolefine are resistant to a great number of chemical substances. Casings -- for example, cahle sleeves -- made of therMnplast ~olded plastic will, however, ~e destroyed in a ~el~y short time by the external effect of fla~es.
As a result of ruptures in the sleeve casin~, flanes can penetrate to the cable connections, by which means the telecommunications t.ansmission or power distribution can be interrupted. Even in the case of flame-resistant thermoplast ~olded platics, this process cannnt be prevented, since the te~erature in every case exceeds 4nnC, which is above the melting and softening temperatures for thermoplast ~olded plastics. This is particularly true nf the thermoplast molded plastics which, because of the above-mentioned characteristics, are used in cah]e sleeves.
~2~33~
SU RY nF THE INvENTION
It is an ob~iect of the present invention to provide casings made of thermoplast molded plastics for cable connections in telecommu;cations and power distribution, in particular cable sleeves, that prevent a destruction of the cable cnnnectinns under the influence of external flames.
This purpose is accomplished, according to the invention, ~y means of a cover ~ade of thermoplast molded plastic, which includes a sheath that is dimensionally stable and non-combustible and is of low flammability. The ~heath is inert w~th regard to the ther~oplast molded plastic. It can he i~pervious, have s~all fissures, or be porous. Casings equipped with a sheath in accordance with the invention are resistant to the external effects of flames. Ahove all, casin~s equiPped in accordance with the invention retain their outside shape when exposed to external effects of flames. Diffusion flames are dissipated on the surface nf the sheath.
Other features and advantages of the invention will be apparent ~rom the followina description of the preferred embodiments, and from the claims.
For a full understanding o~ the present invention, ~eference should now he made to the following detailed description of the preferred embodiments of the invention and to the accompanying drawings.
~2~
B~IEF DESCRIPTION CF THE ~PAWINGS
Figs. 1 and 2 show views of cable sleeves with sect~ons cut away.
Fig. 3 shows a section through a ca~le sleeve with a seal.
: - 4 -D~AILED DESCRIPTI~
With reference to Figs. 1 and ~ there is shown a wire nRt lO
with a coating 11 wrapped around a ther~oplast cable sleeve 2 comprising a sheath 1. In order to cover the front end area, that is, the area where the cable is introduced, the sheath 1 extends up to the cable ~. In order to give stability to the front end section 4 of the sheath 1, a wire 5 has ~een introduced.
Fig. 3 shows a cable sleeve with a seal 7, consisting of an element made of thermoplast molding plastic 89 which is provided with a flameproof surface sheath 9, pursuant to the invention, to fireproof the end of a ca~le 6.
If the design of a cahle sleeve in accordance with the invention includes a seal 39 this too can ~e protected from flames in accordance with the invention.
Suitable sheaths includes metal films ~ith a thickness of fron n.n2 to 0.5 m~. Preferably, an aluminum fil~ which is provided ~ith an adhesive or has a polymer coating is used. In the latter case, the film can be welded through a heating process onto the sleeve.
It is particularly advantageous to use a web or net made of ~etal wire for the sheath. In this case the width of the mesh of the weh or net should preferably be between O.l and 5 mm. The web or net should ideally be made of a corrosion-resistant material~
such as aluminum, galvanized or nickel-plated steel or co3per.
~ ~ ~ 3t~ 1 Accordinq to a preferred e~bodi~ent of the 1nver,tion, the sheath can cons~st of a web or r-~t made of metal wire and of a silicate or non-combustible plastic that is highly fla~e resist3nt.
The latter can if necessary be applied to a substrate. Suitable materials include hardenable plastics a coating of silicone plastic or water glass. The coating can also consist of a foaming firepronfin~ ~aterial. Accordinn to another advantageous for~ of the inventinn, the web or net is ~ade of Nirosta' ) and coated with a non-combustible plastic that is highly flame resistant. nere tno, coatinas ~ade of hardenable plastics, silicon plastic or foaming fireproofing ~aterlals have proved effective.
E~hodi~ents in accnrdance with the invention, which oan be ~anufactured according to any desired process, are being successful]y used as casinas for cable connections. They are being used particularly in cable sleeves and also for seals that can be used in cable sleeves. In every case, excellent fireproofing against the external effects of flame is achieved.
There has thus been shown and described novel fla~eproof casings for cable connections which fulfills all the object and advantages sought therefor. Many changes, ~odifications, variations and other uses and applications of the subjec~ invention will, however, heco~e apparent to those skilled in the art after considering this specification and the accGmpanying drawings which disclose preferred embndi~ents thereof. All such changes, modifications, variations and other uses and applications which do not depart from the spirit and sco~e of the invention are dee~ed to be covered by the invention which is limited only by the claims which follow.
Claims (15)
1. Flameproof casing made of thermoplast molded plastics for cable connections in telecommunications and power distribution systems, comprising:
(a) a cover made of thermoplast molded plastic; and (b) a dimensionally stable, non-combustible sheath of low flammability which is inert to the thermoplast molded plastic.
(a) a cover made of thermoplast molded plastic; and (b) a dimensionally stable, non-combustible sheath of low flammability which is inert to the thermoplast molded plastic.
2. Flameproof casing according to claim 1, wherein said sheath is impermeable.
3. Flameproof casing according to claim 2, wherein said sheath is a metal film.
4. Flameproof casing according to claim 1, wherein said sheath has small fissures.
5. Flameproof casing according to claim 4, wherein said sheath is a non-combustible web.
6. Flameproof casing according to claim 5, wherein said sheath comprises a wire net.
7. Flameproof casing according to claim 5, wherein said sheath comprises a web made of metal.
8. Flameproof casing according to claim 1, wherein said sheath is porous.
9. Flameproof casing according to claim 1, 2, or 4, wherein said sheath further includes a non-combustible plastic of low flammability.
10. Flameproof casing according to claim 1, 2, or 4, wherein said sheath further includes a silicate.
11. Flameproof casing according to claim 1, 2, or 4, wherein said sheath further includes a foaming fireproofing material.
12. Flameproof casing according to claim 1, wherein said casing comprises a cable sleeve for cable connections.
13. Flameproof casing according to claim 6, 7 or 8 wherein said sheath further includes a non-combustible plastic of low flammability.
14. Flameproof casing according to claim 6, 7 or 8, wherein said sheath further includes a silicate.
15. Flameproof casing according to claim 6, 7 or 8, wherein said sheath further includes a foaming fireproofing material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823240758 DE3240758A1 (en) | 1982-11-04 | 1982-11-04 | FLAME-RETARDED HOUSING FOR CABLE CONNECTIONS FOR MESSAGE AND ENERGY TRANSMISSION |
| DEP3240758.0 | 1982-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1223311A true CA1223311A (en) | 1987-06-23 |
Family
ID=6177294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000440385A Expired CA1223311A (en) | 1982-11-04 | 1983-11-03 | Flameproof casings for cable connections |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0108296B1 (en) |
| AT (1) | ATE25173T1 (en) |
| CA (1) | CA1223311A (en) |
| DE (2) | DE3240758A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3503732A1 (en) * | 1985-02-04 | 1986-08-07 | Siemens AG, 1000 Berlin und 8000 München | FLAME RETARDED PLASTIC CABLE SLEEVE |
| GB8924827D0 (en) * | 1989-11-03 | 1989-12-20 | Bicc Plc | Electric cable joint shells and other articles and methods of making them from sheet materials |
| DE9414300U1 (en) * | 1994-09-06 | 1994-11-17 | Cellpack Gmbh | Cable connection |
| DE19614853A1 (en) * | 1996-04-15 | 1997-10-16 | Cellpack Gmbh | Fire-resistant cable connection |
| EP3363463A3 (en) * | 2004-01-07 | 2018-10-31 | Seikagaku Corporation | Hyaluronic acid derivative and drug containing the same |
| DE102007006468B4 (en) * | 2007-02-09 | 2009-09-10 | BBL Bahnbau Lüneburg GmbH | Repair and coupling sleeve |
| GB201116883D0 (en) * | 2011-09-30 | 2011-11-16 | Johnson Matthey Plc | Radiation detector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2415639A1 (en) * | 1974-03-30 | 1975-10-23 | Kabel Metallwerke Ghh | Junction or terminal box for telephone cable - has support with contacts sealed in situ with extruded material after soldering wires |
| DE2440296B2 (en) * | 1974-08-22 | 1976-07-01 | Siemens AG, 1000 Berlin und 8000 München | CABLE SET FOR PERMEATION LOCK |
| US4018962A (en) * | 1975-04-09 | 1977-04-19 | Pedlow J Watson | Arc and fireproofing tape |
| GB1575308A (en) * | 1977-07-21 | 1980-09-17 | Advanced Fireproofing Syst | Trunking for tubes pipes and electrical cable |
| US4158420A (en) * | 1978-05-22 | 1979-06-19 | Balkwill G Russell | Air and moisture barrier for electrical outlet boxes |
| DE2834189A1 (en) * | 1978-08-04 | 1980-02-14 | Rigips Baustoffwerke Gmbh | Jacketed electric installation socket - has inner socket separated from outer one by non-flammable, heat foamable substance |
-
1982
- 1982-11-04 DE DE19823240758 patent/DE3240758A1/en not_active Withdrawn
-
1983
- 1983-10-17 DE DE8383110350T patent/DE3369440D1/en not_active Expired
- 1983-10-17 AT AT83110350T patent/ATE25173T1/en active
- 1983-10-17 EP EP83110350A patent/EP0108296B1/en not_active Expired
- 1983-11-03 CA CA000440385A patent/CA1223311A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0108296B1 (en) | 1987-01-21 |
| DE3369440D1 (en) | 1987-02-26 |
| ATE25173T1 (en) | 1987-02-15 |
| DE3240758A1 (en) | 1984-05-10 |
| EP0108296A1 (en) | 1984-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |