CA1070404A - Electrical connector and housing therefor - Google Patents
Electrical connector and housing thereforInfo
- Publication number
- CA1070404A CA1070404A CA287,681A CA287681A CA1070404A CA 1070404 A CA1070404 A CA 1070404A CA 287681 A CA287681 A CA 287681A CA 1070404 A CA1070404 A CA 1070404A
- Authority
- CA
- Canada
- Prior art keywords
- end portion
- sealing member
- housing
- conductor
- metal sleeve
- 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
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Cable Accessories (AREA)
Abstract
ABSTRACT
An electrical connector housing comprises a tubular body of relatively rigid electrically insulating material; a tubular sealing member of relatively resilient electrically insulating material having a portion at one end adapted to be received in an end portion of the body, and having a bore to receive an end portion of an insulated electrical conductor. The sealing member has an integrally formed web extending across the bore and adapted to be stretched elastically to an elongate sleeve form embracing the insulation of an insulated conductor when inserted into the bore. A metal sleeve is provided, adapted to be secured about the body and sealing member across the junction therebetween thereby to secure the body and sealing member to-gether on an insulated conductor.
An electrical connector housing comprises a tubular body of relatively rigid electrically insulating material; a tubular sealing member of relatively resilient electrically insulating material having a portion at one end adapted to be received in an end portion of the body, and having a bore to receive an end portion of an insulated electrical conductor. The sealing member has an integrally formed web extending across the bore and adapted to be stretched elastically to an elongate sleeve form embracing the insulation of an insulated conductor when inserted into the bore. A metal sleeve is provided, adapted to be secured about the body and sealing member across the junction therebetween thereby to secure the body and sealing member to-gether on an insulated conductor.
Description
107()~0~
This inven~ion relates to an electrical connec~or housing and a connector including such housing.
More particularly this invention relates to a housing for an electrical connector for terminating an insulated electrical conductor which in use carries a low current at a high voltage, for example a conductor of 20 gauge wire haviny an insulating jacket of plastics material with an outside diameter of 0.08 inches. Such a conductor is capable of carrying a low current at a voltage of lOKV.
A connector for terminating such a conductor should preferably be of small size and have the minimum number of parts for ease of assembly to the conductor. The connector should also be such as to eliminate voltage leakage from the connector, and be capable of positive attachment to and retention on the conductor.
According to this.invention there is provided an elec-trical connector housing comprising a tubular body of relatively rigid electrically insulating material; a tubular sealing member of relatively resilient electrically insulating material having a portion at one end adapted to be received in an end portion of the body, and having a bore to receive an end portion of an insulated electrical conductor, the sealing member having an integrally formed web extending across the bore and adapted to be stretched elastically to an elongate sleeve form embracing .
the insulation of an insulated conductor when inserted into the bore; and a metal sleeve adapted to be secured about the body and sealing member across the junction therebetween thereby to secure the body and sealing member together on an insulated conductor.
The housing of the invention has the advantages that it
This inven~ion relates to an electrical connec~or housing and a connector including such housing.
More particularly this invention relates to a housing for an electrical connector for terminating an insulated electrical conductor which in use carries a low current at a high voltage, for example a conductor of 20 gauge wire haviny an insulating jacket of plastics material with an outside diameter of 0.08 inches. Such a conductor is capable of carrying a low current at a voltage of lOKV.
A connector for terminating such a conductor should preferably be of small size and have the minimum number of parts for ease of assembly to the conductor. The connector should also be such as to eliminate voltage leakage from the connector, and be capable of positive attachment to and retention on the conductor.
According to this.invention there is provided an elec-trical connector housing comprising a tubular body of relatively rigid electrically insulating material; a tubular sealing member of relatively resilient electrically insulating material having a portion at one end adapted to be received in an end portion of the body, and having a bore to receive an end portion of an insulated electrical conductor, the sealing member having an integrally formed web extending across the bore and adapted to be stretched elastically to an elongate sleeve form embracing .
the insulation of an insulated conductor when inserted into the bore; and a metal sleeve adapted to be secured about the body and sealing member across the junction therebetween thereby to secure the body and sealing member together on an insulated conductor.
The housing of the invention has the advantages that it
- 2 - ~
882~
107()404 is basically formed of only three parts,which can be easily assembled together on an insulated conductor having a contact connected thereto in a substantially gas~tight, sealed manner to provide a connector capable of carrying high voltages.
This invention will now be described by way of example with reference to the drawings, in which:-Figure 1 is an exploded longitudinal sectional view of a housing according to the invention;
Figure lA is a sectional view of an alternative seal for the housing of Figure l;
~igure 2 is a longitudinal sectional view of the housing of Figure 1 assembled to a shielded insulated conductor having a male contact connected thereto;
~igure 3 is a view similar to Figure 2 but of another housing according to the invention asse~bled to a shielded, in-sulated conductor having a female contact connect~d thereto, the connector of Figure 3 being for mating with that of Figure 2; and Figure 4 is an enlarged view of part of the connector of Figure 2.
The housing shown in Figure 1 comprises a tubular body 1 moulded from relatively rigid electrically insulating plastics material, a tubular sealing member-2 of relatively resilient elastomeric electrically insulating material, a metal sleeve 3, a metal ferrule 4, and an annular seal 5 of resilient electricall~
insulating material~ -The sealing member 2 has a portion 6 at one end adapted to be received in an end portion 7 of the body 1, and has a bore 8 to receive an end portion of an insulated electrical conductor 100 having a male contact 101 crimped to the end thereof.
107()404 The one end portion 6 of the sealing member 2 is formed with a plurality of external circumferential ribs 9 which are compressed on insertion of the portion 6 into the end portion 7 of the body 1 thereby to provide a sealed junction between the body 1 and sealing member 2. The sealing member 2 also has an outwardly directed circumferential flange 10 arranged to engage the end of the body 1 on insertion of the end portion 6 of the sealing member 2 into the end portion 7 of the body 1 thereby to limit such insertion.
The bore 8 at the free end of the end portion 6 of the sealing member 2 has an outwardly tapering mouth portion 11 which is received over a frusto-conical projection 12 in the end portion 7 of the body 1 thereby to enhance the seal between the body 1 and the sealing member 2.
The end portion 7 of the body 1 is separated from the other end portion 13 thereof by an apertured intermediate wall 14 which carries the projection 12. The wall 14 serves as a stop for the male contact 101, with a mating portion of the contact 101 extending through the aperture 15 in the wall 14, the remainder of the contact 101 being received in and thus supported by the projection 12 (see Figures 2 and 4).
The metal sleeve 3 is adapted to-be secured about the body 1 and sealing member 2 across the junction therebetween . thereby to secure the body 1 and sealing member together on the conductor 100. To this end the metal sleeve 3 has a first por-tion 16 of relatively large internal diameter a second inter-mediate portion 17 of the intermediate internal diameter, and a third portion 18 of relatively small internal diameter.
As shown in Figure 2, the junction between the portions 16 and 17 provides a shoulder 19 which engages the flange 10 on the sealing member 2, while the free end of the portion 15 is deformed into an external circumferential groove 20 in the body 1, the body 1 and sealing member 2 thus being secured together.
The portion 18 of the sleeve 3 extends beyond the free end of the sealing member 2, and is received between the in-sulation of the conductor 100 and a shielding layer 102 thereof, whereafter the ferrule 4 is crimped about the portion 18 thereby to trap the shielding 102 between the end portion 18 of the sleeve 3, and the ferrule 4, thereby securing the housing to the conductor 100. The end portion 18 of the sleeve 3 has a plurality of external circumferential ribs 21 thereon to enhance the connection between the shielding 102 and the sleeve 3. The ferrule 4 extends beyond the free end of the sleeve 3 to embrace the conductor 100 thus enhancing the connection.
The annular seal S is, as shown in Figure 2, received in the end portion 13 of the body 1 about the mating portion of the contact 101, which extends through the aperture 15 in the wall 14, and comprises an outer annular part 22 adapted to engage the inner surface of the end portion 1-3 of the body 1, on inner annular part 23 adapted to embrace the contact mating portion, and a wall 24 at the inner end of the seal 5 and formed integ-rally with the outer and inner parts 22 and 23.
Figure lA shows an alternative form of annular seal in the form of a simple resilient 0-ring 5A of electrically insu-lating material.
As clearly shown in Figure 1, the sealing member 2 has an integrally formed web 25 extending across the bore 8 and positioned in line with the flange 10 axially of the sealing member 2. The web 25 is adapted to be stretched elastically ~o an elongate sleeve form ~Figures 2, 3 and 4) embracing the ~07()404 insulation of the conductor 100 when inserted into the bore 8 thereby to provide a substantially gas-tight seal between the sealing member 2 and the conductor 100. The web 25 when in sleeve form also serves to resist withdrawai of the conductor 100 from the sealing member 2 and thus serves to secure the housing on the conductor 100. The web 25 has a small central hole 26 therein to ensure that the web is stretched into a satisfactory sleeve form.
Referring now to Figure 3, parts of the connector here shown the same as parts of the connector of Figures 1 and 2 have the same references.
The connector of Figure 3 is for mating with the conn-ector of Figure 2, and to this end includes a female contact lOlA connected to the conductor 100. The end portion 13 of the body 1 is formed to be received in the end portion 13 of the connector of Figure 2, and also to embrace the female contact lOlA. The mating portion of the male contact 101 enters the portion 13 of the body 1 of the connector of Figure 3 through a hole 27 at the free end thereof, to be received in the female contact lOlA.
Figure 4 is an enlarged view of part of the connector of Figure 2, clearly showing the sleeve form of the web 25 after insertion of the conductor 100 to form a substantially gas-tight seal between the sealing member 2 and the conductor 1, and also the compression of the ribs 9 of the sealing member 2 against the inner surface of the end portion 7 of the body 1 to form a substantially gas-tight seal between the body 1 and the sealing member 2. The end portion 6 of the sealing member 2 is held in radial compression between the body 1 and the conductor 100 the compression being maintained by the securing together of the 88~8 107()40~
body 1 and sealing member 2 by the metal sleeve 3. As shown in Figure 4, the sealing men~er 2 also effectively seals the space between the contact 101 and the end of the conductor 100. The sealed form of the assembled connector eliminates voltage leak-age paths which might otherwise be present between the parts of the connector due to manufacturing tolerances.
882~
107()404 is basically formed of only three parts,which can be easily assembled together on an insulated conductor having a contact connected thereto in a substantially gas~tight, sealed manner to provide a connector capable of carrying high voltages.
This invention will now be described by way of example with reference to the drawings, in which:-Figure 1 is an exploded longitudinal sectional view of a housing according to the invention;
Figure lA is a sectional view of an alternative seal for the housing of Figure l;
~igure 2 is a longitudinal sectional view of the housing of Figure 1 assembled to a shielded insulated conductor having a male contact connected thereto;
~igure 3 is a view similar to Figure 2 but of another housing according to the invention asse~bled to a shielded, in-sulated conductor having a female contact connect~d thereto, the connector of Figure 3 being for mating with that of Figure 2; and Figure 4 is an enlarged view of part of the connector of Figure 2.
The housing shown in Figure 1 comprises a tubular body 1 moulded from relatively rigid electrically insulating plastics material, a tubular sealing member-2 of relatively resilient elastomeric electrically insulating material, a metal sleeve 3, a metal ferrule 4, and an annular seal 5 of resilient electricall~
insulating material~ -The sealing member 2 has a portion 6 at one end adapted to be received in an end portion 7 of the body 1, and has a bore 8 to receive an end portion of an insulated electrical conductor 100 having a male contact 101 crimped to the end thereof.
107()404 The one end portion 6 of the sealing member 2 is formed with a plurality of external circumferential ribs 9 which are compressed on insertion of the portion 6 into the end portion 7 of the body 1 thereby to provide a sealed junction between the body 1 and sealing member 2. The sealing member 2 also has an outwardly directed circumferential flange 10 arranged to engage the end of the body 1 on insertion of the end portion 6 of the sealing member 2 into the end portion 7 of the body 1 thereby to limit such insertion.
The bore 8 at the free end of the end portion 6 of the sealing member 2 has an outwardly tapering mouth portion 11 which is received over a frusto-conical projection 12 in the end portion 7 of the body 1 thereby to enhance the seal between the body 1 and the sealing member 2.
The end portion 7 of the body 1 is separated from the other end portion 13 thereof by an apertured intermediate wall 14 which carries the projection 12. The wall 14 serves as a stop for the male contact 101, with a mating portion of the contact 101 extending through the aperture 15 in the wall 14, the remainder of the contact 101 being received in and thus supported by the projection 12 (see Figures 2 and 4).
The metal sleeve 3 is adapted to-be secured about the body 1 and sealing member 2 across the junction therebetween . thereby to secure the body 1 and sealing member together on the conductor 100. To this end the metal sleeve 3 has a first por-tion 16 of relatively large internal diameter a second inter-mediate portion 17 of the intermediate internal diameter, and a third portion 18 of relatively small internal diameter.
As shown in Figure 2, the junction between the portions 16 and 17 provides a shoulder 19 which engages the flange 10 on the sealing member 2, while the free end of the portion 15 is deformed into an external circumferential groove 20 in the body 1, the body 1 and sealing member 2 thus being secured together.
The portion 18 of the sleeve 3 extends beyond the free end of the sealing member 2, and is received between the in-sulation of the conductor 100 and a shielding layer 102 thereof, whereafter the ferrule 4 is crimped about the portion 18 thereby to trap the shielding 102 between the end portion 18 of the sleeve 3, and the ferrule 4, thereby securing the housing to the conductor 100. The end portion 18 of the sleeve 3 has a plurality of external circumferential ribs 21 thereon to enhance the connection between the shielding 102 and the sleeve 3. The ferrule 4 extends beyond the free end of the sleeve 3 to embrace the conductor 100 thus enhancing the connection.
The annular seal S is, as shown in Figure 2, received in the end portion 13 of the body 1 about the mating portion of the contact 101, which extends through the aperture 15 in the wall 14, and comprises an outer annular part 22 adapted to engage the inner surface of the end portion 1-3 of the body 1, on inner annular part 23 adapted to embrace the contact mating portion, and a wall 24 at the inner end of the seal 5 and formed integ-rally with the outer and inner parts 22 and 23.
Figure lA shows an alternative form of annular seal in the form of a simple resilient 0-ring 5A of electrically insu-lating material.
As clearly shown in Figure 1, the sealing member 2 has an integrally formed web 25 extending across the bore 8 and positioned in line with the flange 10 axially of the sealing member 2. The web 25 is adapted to be stretched elastically ~o an elongate sleeve form ~Figures 2, 3 and 4) embracing the ~07()404 insulation of the conductor 100 when inserted into the bore 8 thereby to provide a substantially gas-tight seal between the sealing member 2 and the conductor 100. The web 25 when in sleeve form also serves to resist withdrawai of the conductor 100 from the sealing member 2 and thus serves to secure the housing on the conductor 100. The web 25 has a small central hole 26 therein to ensure that the web is stretched into a satisfactory sleeve form.
Referring now to Figure 3, parts of the connector here shown the same as parts of the connector of Figures 1 and 2 have the same references.
The connector of Figure 3 is for mating with the conn-ector of Figure 2, and to this end includes a female contact lOlA connected to the conductor 100. The end portion 13 of the body 1 is formed to be received in the end portion 13 of the connector of Figure 2, and also to embrace the female contact lOlA. The mating portion of the male contact 101 enters the portion 13 of the body 1 of the connector of Figure 3 through a hole 27 at the free end thereof, to be received in the female contact lOlA.
Figure 4 is an enlarged view of part of the connector of Figure 2, clearly showing the sleeve form of the web 25 after insertion of the conductor 100 to form a substantially gas-tight seal between the sealing member 2 and the conductor 1, and also the compression of the ribs 9 of the sealing member 2 against the inner surface of the end portion 7 of the body 1 to form a substantially gas-tight seal between the body 1 and the sealing member 2. The end portion 6 of the sealing member 2 is held in radial compression between the body 1 and the conductor 100 the compression being maintained by the securing together of the 88~8 107()40~
body 1 and sealing member 2 by the metal sleeve 3. As shown in Figure 4, the sealing men~er 2 also effectively seals the space between the contact 101 and the end of the conductor 100. The sealed form of the assembled connector eliminates voltage leak-age paths which might otherwise be present between the parts of the connector due to manufacturing tolerances.
Claims (16)
1. An electrical connector housing comprising a tubular body of relatively rigid electrically insulating material; a tubular sealing member of relatively resilient electrically insulating material having a portion at one end adapted to be received in an end portion of the body, and having a bore to receive an end portion of an insulated electrical conductor, the sealing member having an integrally formed web extending across the bore and adapted to be stretched elastically to an elongate sleeve form embracing the insulation of an insulated conductor when inserted into the bore;
and a metal sleeve adapted to be secured about the body and sealing member across the junction therebetween thereby to secure the body and sealing member together on an insulated conductor.
and a metal sleeve adapted to be secured about the body and sealing member across the junction therebetween thereby to secure the body and sealing member together on an insulated conductor.
2. A housing as claimed in Claim 1, in which the sealing member has an outwardly directed circumferential flange arranged to limit insertion of the one end portion of the sealing member into the end portion of the body by engagement with one end of the body.
3. A housing as claimed in Claim 2, in which the web is positioned in line with the flange axially of the sealing member.
4. A housing as claimed in Claim 1, Claim 2 or Claim 3, in which the one end portion of the sealing member is formed with a plurality of external circumferential ribs adapted to be compressed on insertion of the one end portion of the sealing member into the end portion of the body.
5. A housing as claimed in Claim 1, in which the bore at the one end of the sealing member has an outwardly tapering mouth portion which is received over a frusto-conical projection in the end portion of the body.
6. A housing as claimed in Claim 1, in which the body has an external circumferential groove into which an end portion of the metal sleeve can be deformed to secure the body and sealing member together
7. A housing as claimed in Claim 1, in which the end portion of the body, which receives the sealing member, is separated from the other end portion of the body by an apertured intermediate wall adapted to serve as a stop for a male contact on the end of an in-sulated conductor on which the housing is secured, with a mating portion of the male contact extending through the aperture in the intermediate wall.
8. A housing as claimed in Claim 7, including an annular seal adapted to be received in the other end portion of the body about the mating portion of the male contact when extending through the aperture in the intermediate wall.
9. A housing as claimed in Claim 8, in which the annular seal is an O-ring.
10. A housing as claimed in Claim 8, in which the annular seal comprises an outer annular part adapted to engage the inner surface of the other end portion of the body, an inner annular part adapted to embrace the male contact mating portion, and a wall at one end integrally formed with the outer and inner parts.
11. A housing as claimed in Claim 1, for use with an insulated conductor having a conductive shielding layer about the insulation thereof, in which the metal sleeve has an end portion adapted to extend beyond the end of the sealing member to be received between the insulation and shielding layer of the conductor, and including a metal ferrule adapted to be crimped about the end portion of the metal sleeve to trap the shielding layer of the conductor between the end portion of the metal sleeve and the ferrule.
12. A housing as claimed in Claim 11, in which the end portion of the metal sleeve has a plurality of external circumferential ribs thereon.
13. An electrical connector, comprising a housing as claimed in Claim 1, and a contact located in the body, the contact being connected to an end of an insulated conductor received in the sealing member with the web stretched to elongate sleeve form and embracing the insulation of the conductor.
14. A connector as claimed in Claim 13, in which the shield-ing layer of the conductor is trapped between an end portion of the metal sleeve and a ferrule, the ferrule extending beyond the free end of the metal sleeve and embracing the conductor.
15. A connector as claimed in Claim 13 or Claim 14, in which an annular seal is mounted on the contact in sealing engagement therewith and with the inner surface of the body.
16. A connector as claimed in Claim 13 or Claim 14, in which the contact is a female contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73118076A | 1976-10-12 | 1976-10-12 | |
| US05/818,798 US4116521A (en) | 1976-10-12 | 1977-07-25 | Miniature universal connector module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1070404A true CA1070404A (en) | 1980-01-22 |
Family
ID=27112179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA287,681A Expired CA1070404A (en) | 1976-10-12 | 1977-09-28 | Electrical connector and housing therefor |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5347995A (en) |
| CA (1) | CA1070404A (en) |
| DE (1) | DE2745887A1 (en) |
| ES (1) | ES463054A1 (en) |
| FR (1) | FR2368159A1 (en) |
| GB (1) | GB1544598A (en) |
| IT (1) | IT1087535B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374606A (en) * | 1980-11-26 | 1983-02-22 | Amp Incorporated | Dielectric plug for a coaxial connector |
| GB2116381B (en) * | 1982-02-20 | 1985-09-04 | Y S Securities Ltd | High voltage electrical connector |
| GB2203297B (en) * | 1987-04-02 | 1991-01-16 | Oxley Dev Co Ltd | High voltage connector |
| FR2719420A1 (en) * | 1994-04-29 | 1995-11-03 | Ge Medical Syst Sa | Electrical connector for high voltage cable |
| DE4439684C1 (en) * | 1994-11-07 | 1996-05-09 | Delphi Automotive Systems Gmbh | Electrical connector |
| WO1996028864A1 (en) * | 1995-03-10 | 1996-09-19 | The Whitaker Corporation | High voltage low current connector interface |
| FR2815481B1 (en) * | 2000-10-16 | 2003-01-03 | Cinch Connecteurs Sa | WATERPROOF CONNECTOR |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2333266A (en) * | 1941-06-30 | 1943-11-02 | James B Miller | Emergency wire connector |
| FR1271272A (en) * | 1960-07-30 | 1961-09-08 | Souriau & Cie | Improvements to the means for fixing a male part in a female part, in particular for pins or sockets of electrical outlets |
| GB1362265A (en) * | 1971-03-12 | 1974-08-07 | Cannon Electric Great Britain | Electrical connectors |
| US3850495A (en) * | 1973-06-06 | 1974-11-26 | Amp Inc | Multi-pin shielded high voltage connector |
| US3905672A (en) * | 1974-05-28 | 1975-09-16 | Itt | Sealed electrical connector |
| US3963295A (en) * | 1975-04-21 | 1976-06-15 | Amp Incorporated | Heat-shrinkable molded high voltage connector |
-
1977
- 1977-09-26 IT IT27925/77A patent/IT1087535B/en active
- 1977-09-28 CA CA287,681A patent/CA1070404A/en not_active Expired
- 1977-10-04 GB GB41087/71A patent/GB1544598A/en not_active Expired
- 1977-10-08 ES ES463054A patent/ES463054A1/en not_active Expired
- 1977-10-11 FR FR7730597A patent/FR2368159A1/en not_active Withdrawn
- 1977-10-12 DE DE19772745887 patent/DE2745887A1/en not_active Withdrawn
- 1977-10-12 JP JP12156377A patent/JPS5347995A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2745887A1 (en) | 1978-04-13 |
| IT1087535B (en) | 1985-06-04 |
| ES463054A1 (en) | 1978-07-01 |
| JPS5347995A (en) | 1978-04-28 |
| GB1544598A (en) | 1979-04-19 |
| FR2368159A1 (en) | 1978-05-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |