CA1146189A - Jointing means primarily for pipes - Google Patents
Jointing means primarily for pipesInfo
- Publication number
- CA1146189A CA1146189A CA000352793A CA352793A CA1146189A CA 1146189 A CA1146189 A CA 1146189A CA 000352793 A CA000352793 A CA 000352793A CA 352793 A CA352793 A CA 352793A CA 1146189 A CA1146189 A CA 1146189A
- Authority
- CA
- Canada
- Prior art keywords
- layer
- metallic
- surrounding
- sealing element
- pipe
- 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
Landscapes
- Gasket Seals (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A sealing element for producing a sealing joint between two metallic members having communicating holes extending through the wall of a metallic pipe and a metallic connecting piece attachable against the pipe wherein said latter hole extends in an angular relationship to the length axis of the pipe, comprising said sealing element being positioned surrounding the hole in the metallic connecting piece and comprising an element having a relatively high electrical resistance surrounded by a layer of an electrical insulating material, a fluxing agent, two electrical conductors connected to said resistance element in a mainly opposed relationship to each other and to an electrical power source to heat said resistance element, thereby melting said sur-rounding layer which together with said fluxing agent forms a sealing joint between the metallic members surrounding the holes in the metallic members.
A sealing element for producing a sealing joint between two metallic members having communicating holes extending through the wall of a metallic pipe and a metallic connecting piece attachable against the pipe wherein said latter hole extends in an angular relationship to the length axis of the pipe, comprising said sealing element being positioned surrounding the hole in the metallic connecting piece and comprising an element having a relatively high electrical resistance surrounded by a layer of an electrical insulating material, a fluxing agent, two electrical conductors connected to said resistance element in a mainly opposed relationship to each other and to an electrical power source to heat said resistance element, thereby melting said sur-rounding layer which together with said fluxing agent forms a sealing joint between the metallic members surrounding the holes in the metallic members.
Description
l~is invention relates to a sealing element for producing a sealing joint between two metal members having communicating holes.
When a-ttaching a connecting piece to a tubular pipe to establish flow communication between a hole in the pipe and the connection piece it is difficult to achieve sealing readily and efficiently. This problem is further accentuated with regard to pipes subject to vibration or temperature changes as a weld joint is not suitable, due to the fact that vîbrations and changes of dimensions caused by tem-perature variations considerably reduce safety against leakage.
The present invention provides a joint around a hole through the wall of one pipe, when the hole communicates ~ith another pipe extending at an angular relationship to the axis of the one pipe.
According to the present invention there is provided a sealing element for producing a sealing joint between two ~etallic members having communicating holes extending through the wall of a metallic pipe and a metallic connecting piece attachable agains~ the pipe wherein said latter hole extends ~; in an angular relationship to the length axis of the pipe, comprising said sealing element being positioned surrounding the hole in the metallic connecting piece and comprising an element having a relatively high electrical resistance ~surrounded by a layer of an electrical insulating material, a fluxing agent, two electrical conductors connected to said resistance element in a mainly opposed relationship to each other and to an electrical power source to heat said re-sistance element, thereby melting said surrounding layer which together with said fluxing agent forms a sealing joint ; between the metallic members surrounding the holes in the ' 35 metallic members.
- ~ ~ : . . .
, ~6~
Desirably th.e sealing element includes an .outer layer of an eIectrical conductive matPrial for ~orming a part of said sealing joint ,surrounding said electrical insulating layer.
Desirably the' outer layer has a plurality of channels within it and said ~luxing agent is.disposed within said channels.
'The'layer of electrical insulation may suitably ~-' be sald fluxing agent.
Desirably the fluxing agent comprises a layer of fluxing material arranged between the electrical insulating layer and said outer layer of an electricall,y conductive m~terial. , In one embodiment of the pxesent invention the : resistance element and surrounding layers comprise a '~ laminate of contiguous and substant.ially parallel layers.
:~ 20 Suitably the outer surface of at least one outer-most layer has an adhesive coating of the self-adhesive type.
~, A number of embodiments and preferred features of . devices according to this invention are more fully described ~`:; with reference to the accompanying drawings, wherein:-Figure 1 is a perspective view of a connecting piece, arranged to embrace a pipe with a generally corres-ponding shaped member (not shown), attachable thereto byscrews ox bolts, the member being a first embodiment of a device according to th,e invention;
Fiyure 2 is a side elevation of the device shown in.Figure l;
, ._~
:~ - 2 -:', ~ :.
Figure 3 is a cross-sectional view of a second embodiment of a device according to the present invention~
s . ;
.
'~' ,,:
, ~; 15 . ' ' '.''~ ' , ~
Z~
, ~ 25 Z~
Z~
, 30 ,, Z
~"'` .
~ 2a -s ~
Figure 4 is a fragmentary perspective view of a third embodiment of the invention;
.
Figure 5 is a cross-sectional view of an embodiment according to the invention, before establishing a sealing joint between two connection flanges;
Figure 6 is a cross-sectional view corresponding to Figure 5, when a sealing joint has been established;
Figure 7 is a cross-sectional view of a further embodi- :
ment of a connecting piece, intended to be attached against - the outside peripheral portion of a pipe;
: 15 Figure 8 is a cross-sectional view of a rnodified embodi : ment of a sealing element according to the invention; and Figure 9 is a further modified embodiment of the seal-~i ing element shown in Figure 8.
With re~erence to Figure 1, a connecting piece 1 is shown, intended to be attached against the outside peri-pheral portion of a tubular pipe, and to establish flow communication with a hole in the wall of said pipe. The ~ 25 connecting piece 1 is attached together with a second part :` (:not shown) in an embracing relationship to the pipe, said : parts being joined to each other by means of screws or bolts.
-: ' :: `
.' ' ::~ 35 :~
- 3 - :
: .
The embodiment shown in Figures 1 and 2 includes a first electrically insulating layer 2, àttached to the curved abutment surface of the connectiny piece. A second layer of an electrically insulating material 3 is arranged in contact with the first layer 2, and a ring oE metallic wire 4 is arranged between the electrically insulating layers, 2 and 3 respectively, surrounding a cylindrical hole 5 in the connecting piece 1, intended to communicate with the hole located in the wall of the pipe. Two elec-trical conductors 6, 6' are connected to the annular wire 4, intended to facilitate connection to an electrical power source. Advantageously, said conductors 6, 6' are also located as shown, between the elect~ically insulating layers
When a-ttaching a connecting piece to a tubular pipe to establish flow communication between a hole in the pipe and the connection piece it is difficult to achieve sealing readily and efficiently. This problem is further accentuated with regard to pipes subject to vibration or temperature changes as a weld joint is not suitable, due to the fact that vîbrations and changes of dimensions caused by tem-perature variations considerably reduce safety against leakage.
The present invention provides a joint around a hole through the wall of one pipe, when the hole communicates ~ith another pipe extending at an angular relationship to the axis of the one pipe.
According to the present invention there is provided a sealing element for producing a sealing joint between two ~etallic members having communicating holes extending through the wall of a metallic pipe and a metallic connecting piece attachable agains~ the pipe wherein said latter hole extends ~; in an angular relationship to the length axis of the pipe, comprising said sealing element being positioned surrounding the hole in the metallic connecting piece and comprising an element having a relatively high electrical resistance ~surrounded by a layer of an electrical insulating material, a fluxing agent, two electrical conductors connected to said resistance element in a mainly opposed relationship to each other and to an electrical power source to heat said re-sistance element, thereby melting said surrounding layer which together with said fluxing agent forms a sealing joint ; between the metallic members surrounding the holes in the ' 35 metallic members.
- ~ ~ : . . .
, ~6~
Desirably th.e sealing element includes an .outer layer of an eIectrical conductive matPrial for ~orming a part of said sealing joint ,surrounding said electrical insulating layer.
Desirably the' outer layer has a plurality of channels within it and said ~luxing agent is.disposed within said channels.
'The'layer of electrical insulation may suitably ~-' be sald fluxing agent.
Desirably the fluxing agent comprises a layer of fluxing material arranged between the electrical insulating layer and said outer layer of an electricall,y conductive m~terial. , In one embodiment of the pxesent invention the : resistance element and surrounding layers comprise a '~ laminate of contiguous and substant.ially parallel layers.
:~ 20 Suitably the outer surface of at least one outer-most layer has an adhesive coating of the self-adhesive type.
~, A number of embodiments and preferred features of . devices according to this invention are more fully described ~`:; with reference to the accompanying drawings, wherein:-Figure 1 is a perspective view of a connecting piece, arranged to embrace a pipe with a generally corres-ponding shaped member (not shown), attachable thereto byscrews ox bolts, the member being a first embodiment of a device according to th,e invention;
Fiyure 2 is a side elevation of the device shown in.Figure l;
, ._~
:~ - 2 -:', ~ :.
Figure 3 is a cross-sectional view of a second embodiment of a device according to the present invention~
s . ;
.
'~' ,,:
, ~; 15 . ' ' '.''~ ' , ~
Z~
, ~ 25 Z~
Z~
, 30 ,, Z
~"'` .
~ 2a -s ~
Figure 4 is a fragmentary perspective view of a third embodiment of the invention;
.
Figure 5 is a cross-sectional view of an embodiment according to the invention, before establishing a sealing joint between two connection flanges;
Figure 6 is a cross-sectional view corresponding to Figure 5, when a sealing joint has been established;
Figure 7 is a cross-sectional view of a further embodi- :
ment of a connecting piece, intended to be attached against - the outside peripheral portion of a pipe;
: 15 Figure 8 is a cross-sectional view of a rnodified embodi : ment of a sealing element according to the invention; and Figure 9 is a further modified embodiment of the seal-~i ing element shown in Figure 8.
With re~erence to Figure 1, a connecting piece 1 is shown, intended to be attached against the outside peri-pheral portion of a tubular pipe, and to establish flow communication with a hole in the wall of said pipe. The ~ 25 connecting piece 1 is attached together with a second part :` (:not shown) in an embracing relationship to the pipe, said : parts being joined to each other by means of screws or bolts.
-: ' :: `
.' ' ::~ 35 :~
- 3 - :
: .
The embodiment shown in Figures 1 and 2 includes a first electrically insulating layer 2, àttached to the curved abutment surface of the connectiny piece. A second layer of an electrically insulating material 3 is arranged in contact with the first layer 2, and a ring oE metallic wire 4 is arranged between the electrically insulating layers, 2 and 3 respectively, surrounding a cylindrical hole 5 in the connecting piece 1, intended to communicate with the hole located in the wall of the pipe. Two elec-trical conductors 6, 6' are connected to the annular wire 4, intended to facilitate connection to an electrical power source. Advantageously, said conductors 6, 6' are also located as shown, between the elect~ically insulating layers
2, 3. Furthermore, the annular metallic wire consists of a material having high electrical resistance, whereby con-nection of the conductors 6, 6' to a power source causes liberation of heat from the wire 4. The e]ectrically in-sulating layers 6, 6' are manufactured from such a material, that the heat liberated from the wire causes the material ~ 20 to completely or partly melt, thereby forming a preferably ;; elastic joint between the outer wall surface of the pipe and the connecting piece 1, said joint surrounding the ~ hole in the wall of the pipe.
:~' By varying the wire with regard to resistive proper-ties, as well as with regard to power supplied, the temp~
~ erature can be varied within broad limits, which means ; that a welded joint can be achieved for certain cases of application. Furthermore, the material of the surrounding ; 30 electrically insulating layers, 2 and 3 respectively, can be ~aried, in order to accomplish a sealing joint between different types of material and for different cases of application.
` The embodiment shown in Figure 3 is intended to show t that the conductors 6, 6' do not necessarily have to be manufactured from the same material as the annular parts 4, _ . ';
i.e. the conductors 6, 6' can advantageously be manufactured rrom a material having a lower electrical resistance, in order to avoid that the conductors 6, 6' are heated resistive-ly when the conductors 6, 6' are connected to a pGwer source.
Figure 4 shows how the electrically insulating layers 2, 3 and the annular parts 4 can be manufactured as a laminate. Said laminate includes a first layer 2 of an electrically insulating material attachable to the connect-îng piece 1, a second electrically conductive and heatablelayer 4, and an outer, electrically insulating layer 3.
A conductor 6 supplying an electrical current is also indi-cated, shown as a conventional electrically insulated con-ductor, attached to the intermediate layer 4. In difference to previously mentioned embodiments, the electrically heat-able layer has a rectangular cross-section, which causes an extremely favourable heat dissipation~ The insulating layer 2 attachable against the connecting piece 1, is ad-; vantageously arranged with a self-adhesive layer, in order to facilitate application of the laminate~
With reference to the embodiment shown in Figures 5 and 6, two connecting pieces 1, 1' attachable to each other are shown, e.g. a flange connection. The invention can also be used for such joints, even though reference has ~ previously only been made to pipes. In this embodiment, f`~ an annular wire 4 surrounded by an electrically insulating wire 7 is arranged in an intermediate position between the connecting pieces 1, 1'. As shown iD Figure 5, the elec-30 trically insulating layer 7 is slightly deformed when the members 1, 1' are joined. By means of conductors for elec-trical current (not shown), electrical current is there-after supplied to the annular member 4, resulting in liber-ation of heat from the annular member 4, whereby the ~` 35 surrounding layer 7 is melted and adheres to the members i~l 1, 1'. Advantageously, the members 1, 1' are brought in ~i ,; ~ , -. . : , ,: .~ :, . : :
f`~
~ ~6~3 a more adjacent position to each other when the annular member 4 is heated, thereby further improving the sealing properties of the resulting joint.
Figure 7 shows an embodiment, based on two adhering foils 2/ 3 of an electrically insulating material, between which an annular wire 4 is located. According to this embodiment, only the parts of the foils 2, 3 adjacent to the wire 4 are melted, thereby forming a sealing joint between the connecting piece 1 and a pipe. This embodiment makes it also possible to locate a number of annular wires 4 concentrically to each other, arranged to be heated to-gether, in order to form a number of each other surrounding joints, or, arranged with independant conductors 6, 6' for individual heating, e.g. to form a first sealing joint, which later, e.g when leakage occurs, can be replaced by a second sealing joint surrounding the first joint.
~', , .
The embodiments described with reference to Figures 1 to 7 are preferred when the surrounding electrically in-sulating material has such properties, that complete ad-herence is achieved when the material is heated. However, ~-~ this is not always the case, e.g. when a welded or solder ~:~ ed joint is desirable, in which case existing oxide layer ; 25 at the outside wall of the pipe and/or at the abutment surface of the connecting piece 1 first must be removed.
~; In order to accomplish this, a fluxing agent must be ~; sùpplied. Figures 8~and 9 intend to disclose two examples how this can be achieved. Figure 8 shows the electrically heatable wire 4 surrounded by a layer of fluxing agent 8, which in turn is surrounded by the electrically insulating material 7. An interesting development is thus achieved, since 2 he fluxing agent in certain cases can consist of an electrically insulating layer, whereby the outer layer 7 can be of an electrically non-insulatiny material. Alter-natively, a thin electrically insulating layer can be ~, :
: . : , . :
arranyed between the wire 4 and the fluxing agent 8, or surrounding the fluxing agent 8, thus insulating same and the wire 4 from the outer layer 7O It is thus possible to achieve a soldered or welded joint, since the outer layer 7 can consist of a metallic laye.r of electrically conduc-tive material.
A modified embodiment is shown in Figure 9, the flux-ing agent 8 being arranged as a number of separate chan-~ 10 nels in the layer 7 surrounding the electrically heatable : wire 4. Also in this case, a thin electrically insulating .layer can be arranged between the wire 4 and the surround-ing layer 7, whereby said layer 7 can consist of electri-cally conductive material.
The embodiment described above with reference to the drawings only intend to show examples of embodiments within the scope of the invention, since obviously many modifica-tions are possible.
However, it is obvious, that the possibility to accom ~: plish a sealing joint, e.g. surrounding the hole in the ~ waIl of a cylindrical pipe, creates large advantages, since . : the resistance again~t vibrations i5 increased, as well ~.-~ 25 as the resistance against changes of diameter in the pipe, , , ~ e.g. caused by temperature variations.
:' ~: 30 ' ;' .
; : 35 ,~:. ~ 7 ~
:~' By varying the wire with regard to resistive proper-ties, as well as with regard to power supplied, the temp~
~ erature can be varied within broad limits, which means ; that a welded joint can be achieved for certain cases of application. Furthermore, the material of the surrounding ; 30 electrically insulating layers, 2 and 3 respectively, can be ~aried, in order to accomplish a sealing joint between different types of material and for different cases of application.
` The embodiment shown in Figure 3 is intended to show t that the conductors 6, 6' do not necessarily have to be manufactured from the same material as the annular parts 4, _ . ';
i.e. the conductors 6, 6' can advantageously be manufactured rrom a material having a lower electrical resistance, in order to avoid that the conductors 6, 6' are heated resistive-ly when the conductors 6, 6' are connected to a pGwer source.
Figure 4 shows how the electrically insulating layers 2, 3 and the annular parts 4 can be manufactured as a laminate. Said laminate includes a first layer 2 of an electrically insulating material attachable to the connect-îng piece 1, a second electrically conductive and heatablelayer 4, and an outer, electrically insulating layer 3.
A conductor 6 supplying an electrical current is also indi-cated, shown as a conventional electrically insulated con-ductor, attached to the intermediate layer 4. In difference to previously mentioned embodiments, the electrically heat-able layer has a rectangular cross-section, which causes an extremely favourable heat dissipation~ The insulating layer 2 attachable against the connecting piece 1, is ad-; vantageously arranged with a self-adhesive layer, in order to facilitate application of the laminate~
With reference to the embodiment shown in Figures 5 and 6, two connecting pieces 1, 1' attachable to each other are shown, e.g. a flange connection. The invention can also be used for such joints, even though reference has ~ previously only been made to pipes. In this embodiment, f`~ an annular wire 4 surrounded by an electrically insulating wire 7 is arranged in an intermediate position between the connecting pieces 1, 1'. As shown iD Figure 5, the elec-30 trically insulating layer 7 is slightly deformed when the members 1, 1' are joined. By means of conductors for elec-trical current (not shown), electrical current is there-after supplied to the annular member 4, resulting in liber-ation of heat from the annular member 4, whereby the ~` 35 surrounding layer 7 is melted and adheres to the members i~l 1, 1'. Advantageously, the members 1, 1' are brought in ~i ,; ~ , -. . : , ,: .~ :, . : :
f`~
~ ~6~3 a more adjacent position to each other when the annular member 4 is heated, thereby further improving the sealing properties of the resulting joint.
Figure 7 shows an embodiment, based on two adhering foils 2/ 3 of an electrically insulating material, between which an annular wire 4 is located. According to this embodiment, only the parts of the foils 2, 3 adjacent to the wire 4 are melted, thereby forming a sealing joint between the connecting piece 1 and a pipe. This embodiment makes it also possible to locate a number of annular wires 4 concentrically to each other, arranged to be heated to-gether, in order to form a number of each other surrounding joints, or, arranged with independant conductors 6, 6' for individual heating, e.g. to form a first sealing joint, which later, e.g when leakage occurs, can be replaced by a second sealing joint surrounding the first joint.
~', , .
The embodiments described with reference to Figures 1 to 7 are preferred when the surrounding electrically in-sulating material has such properties, that complete ad-herence is achieved when the material is heated. However, ~-~ this is not always the case, e.g. when a welded or solder ~:~ ed joint is desirable, in which case existing oxide layer ; 25 at the outside wall of the pipe and/or at the abutment surface of the connecting piece 1 first must be removed.
~; In order to accomplish this, a fluxing agent must be ~; sùpplied. Figures 8~and 9 intend to disclose two examples how this can be achieved. Figure 8 shows the electrically heatable wire 4 surrounded by a layer of fluxing agent 8, which in turn is surrounded by the electrically insulating material 7. An interesting development is thus achieved, since 2 he fluxing agent in certain cases can consist of an electrically insulating layer, whereby the outer layer 7 can be of an electrically non-insulatiny material. Alter-natively, a thin electrically insulating layer can be ~, :
: . : , . :
arranyed between the wire 4 and the fluxing agent 8, or surrounding the fluxing agent 8, thus insulating same and the wire 4 from the outer layer 7O It is thus possible to achieve a soldered or welded joint, since the outer layer 7 can consist of a metallic laye.r of electrically conduc-tive material.
A modified embodiment is shown in Figure 9, the flux-ing agent 8 being arranged as a number of separate chan-~ 10 nels in the layer 7 surrounding the electrically heatable : wire 4. Also in this case, a thin electrically insulating .layer can be arranged between the wire 4 and the surround-ing layer 7, whereby said layer 7 can consist of electri-cally conductive material.
The embodiment described above with reference to the drawings only intend to show examples of embodiments within the scope of the invention, since obviously many modifica-tions are possible.
However, it is obvious, that the possibility to accom ~: plish a sealing joint, e.g. surrounding the hole in the ~ waIl of a cylindrical pipe, creates large advantages, since . : the resistance again~t vibrations i5 increased, as well ~.-~ 25 as the resistance against changes of diameter in the pipe, , , ~ e.g. caused by temperature variations.
:' ~: 30 ' ;' .
; : 35 ,~:. ~ 7 ~
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A sealing element for producing a sealing joint between two metallic members having communicating holes extending through the wall of a metallic pipe and a metallic connecting piece attachable against the pipe wherein said latter hole extends in an angular relationship to the length axis of the pipe, comprising said sealing element being positioned surrounding the hole in the metallic connecting piece and comprising an element having a relatively high electrical resistance surrounded by a layer of an electrical insulating material, a fluxing agent, two electrical conductors connected to said resistance element in a mainly opposed relationship to each other and to an electrical power source to heat said resistance element, thereby melting said surrounding layer which together with said fluxing agent forms a sealing joint between the metallic members surrounding the holes in the metallic members.
2. A sealing element according to claim 1, including an outer layer of an electrical conductive material for forming a part of said sealing joint surrounding said electrical insulating layer.
3. A sealing element according to claim 2, wherein said layer of electrical insulating material is said fluxing agent.
4. A sealing element according to claim 2, wherein said fluxing agent comprises a layer of fluxing material arranged between the electrical insulating layer and said outer layer of an electrically conductive material.
5. A sealing element according to claim 2, wherein said outer layer has a plurality of channels within it and said fluxing agent is disposed within said channels.
6. A sealing element according to claim 1, wherein said resistance element and surrounding layers comprise a laminate of contiguous and substantially parallel layers.
7. A sealing element according to claim 6, wherein the outer surface of at least one outermost layer has an adhesive coating of the self-adhesive type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000352793A CA1146189A (en) | 1980-05-27 | 1980-05-27 | Jointing means primarily for pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000352793A CA1146189A (en) | 1980-05-27 | 1980-05-27 | Jointing means primarily for pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1146189A true CA1146189A (en) | 1983-05-10 |
Family
ID=4117038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000352793A Expired CA1146189A (en) | 1980-05-27 | 1980-05-27 | Jointing means primarily for pipes |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1146189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175566A (en) * | 2020-01-27 | 2021-07-27 | 劳士领汽车集团 | Channel component for a motor vehicle with integrated electrical lines dimensioned as required |
-
1980
- 1980-05-27 CA CA000352793A patent/CA1146189A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175566A (en) * | 2020-01-27 | 2021-07-27 | 劳士领汽车集团 | Channel component for a motor vehicle with integrated electrical lines dimensioned as required |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5167545A (en) | Connector containing fusible material and having intrinsic temperature control | |
| CA1193641A (en) | Bifilar resistance element, heating element made therefrom, and process for preparing heating element made therefrom | |
| EP0127680B1 (en) | Connector containing fusible material and having intrinsic temperature control | |
| US5064978A (en) | Assembly with self-regulating temperature heater perform for terminating conductors and insulating the termination | |
| EP2215889B1 (en) | Moisture resistant layered sleeve heater and method of manufacture thereof | |
| US4242719A (en) | Solder-weld P.C. board apparatus | |
| JP2582886B2 (en) | Article joining method | |
| US4394711A (en) | Circuit board with weldable terminals | |
| EP0420480A2 (en) | Method of terminating an electrical conductor wire | |
| US7964825B2 (en) | Method for the attachment of an electrical lead wire on a surface element, as well as a heating element, especially for a plastic-spraying device | |
| CA1146189A (en) | Jointing means primarily for pipes | |
| US5227596A (en) | Self regulating connecting device containing fusible material | |
| CA2090106A1 (en) | Electric element assembly | |
| JPH0498773A (en) | Superconducting cable connection section | |
| GB2071246A (en) | A jointing means primarily for pipes | |
| JP2524859B2 (en) | Resistance / temperature fuse and manufacturing method thereof | |
| JP3463760B2 (en) | Electrode for thermal spray heating element and joining method | |
| KR200248915Y1 (en) | Welding cable | |
| CN1254493A (en) | Method of attaching metallic objects to printed circuit board | |
| CN101918170B (en) | Solder wire construction | |
| JP3783272B2 (en) | Manufacturing method of thermal fuse | |
| JP2736805B2 (en) | Synthetic resin pipe fittings | |
| JPS6116589Y2 (en) | ||
| JPH03129194A (en) | Fusion coupling | |
| JP3344350B2 (en) | Connector and its mounting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |