US3727174A - Housing for electrical connectors - Google Patents

Housing for electrical connectors Download PDF

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Publication number
US3727174A
US3727174A US00024749A US3727174DA US3727174A US 3727174 A US3727174 A US 3727174A US 00024749 A US00024749 A US 00024749A US 3727174D A US3727174D A US 3727174DA US 3727174 A US3727174 A US 3727174A
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United States
Prior art keywords
housing
connectors
connector
electrical connector
electrical
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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 - Lifetime
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US00024749A
Inventor
A Podmore
I Page
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
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AMP Inc
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Publication date
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    • 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
    • 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
    • H01R13/64—Means for preventing incorrect coupling

Definitions

  • An insulating housing for an electrical connector is formed by extruding plastics material to provide two housing parts connected together by a reduced crosssection part which forms a hinge extending in the extrusion direction so that the two housing parts are closable to embrace an electrical connector.
  • APR 1 01973 sum 1 OF 2 PATENTEUAPR 1 0191s sum 2 [1F- 2 1 HOUSING FOR ELECTRICAL CONNECTORS
  • Electrical connectors connected, for example, by crimping to the ends of wires may be retained within cavities formed in a housing of electrically insulating material.
  • the housings may be made as single moldings of plastics material.
  • the molds for such housings are, however, usually complicated and expensive to manufacture.
  • an insulating housing for an electrical connector is formed by extruding plastics material to provide two housing parts connected together by a reduced cross-section part which forms a hinge extending in the extrusion direction so that the two housing parts are closable to embrace an electrical connector.
  • a plurality of integrally formed housings are provided by a single extrusion, the housings initially being partially severed from one another to facilitate the housings being completely separated afterassembly of the connectors to the housings.
  • the extrusion can thus be fed as a strip of housings to a machine for assembling electrical connectors to the housings.
  • Complementary tongues and grooves formed in the extrusion direction may be'provided in the housing parts, which tongues and grooves co-operate to retain the electrical connector in position within the housing.
  • a slot may be provided in the housing for receiving locking means on the electrical connector, which slot extends transversely of the extrusion direction.
  • the housing may have a pair of spaced parallel ribs on a surface of the housing extending in the extrusion direction for aligning the housing with a mating hous-
  • a groove in one housingpart is provided for engagement with a locking member in the other housing part for locking the housing parts in their closed position.
  • FIG. 1 is a cross-section of an electrical connector-
  • FIG. 5 is a cross-section on the lines V-V of FIG. 4;
  • FIG. 6 is a cross-section on the lines VI-Vl of FIG.
  • FIG. 7 is a diagrammatic perspective view of a housing suitable for mating with a housing of FIG. 1.
  • an extruded housing 1 for electrical connectors comprises a base part 3 and a cover part 5 integrally connected together by a flexible hinge part 7 of reduced cross-section extending in the direction of extrusion such that parts 3 and 5 can be moved from an open position shown in FIG. 1, to a closed position shown in FIG. 2, in which a locking member 13 on the cover part 5 engages within a corresponding groove 17 on the base part 3.
  • Base part 3 and cover part 5 are both provided with a plurality of grooves 11 and tongues 9 extending in the direction of extrusion, which in the closed position of the housing define a plurality of cavities 19 for receiving the electrical connectors.
  • Ribs 21 of substantially semi-circular section are provided on the under surface of the base part 3.
  • Housing 1 is of substantially constant cross-section as seen in FIG. 1 and is extruded and then saw cut to the required length.
  • FIG. 3 shows part of an extrusion with saw cuts 23 made transversely of the length of the extrusion.
  • the saw cuts define front and rear faces 27 and 29 respectively of a housing and are made of such a depth that materialremains in the ribs 21 to connect adjacent housings together.
  • Atransverse slot is also provided in the housing 1 for retaining electrical contacts within the housing as will be described below.
  • the slot 25 is arranged adjacent the front face 27 of the housing 1.
  • FIGS. 4 to 6 An electrical tab connector 30 suitable for crimping to an end of a flat conductor of a flat conductor cable is shown in FIGS. 4 to 6.
  • Flat conductor cables consist of a plurality of parallel flat ribbon-like conductors arranged in side-by-side formation between sheets of insulating material. Thesheets are joined together along their longitudinal edges and between the conductors completely to insulate each conductor from its neighbor.
  • the upper layer 40 of tab 32 at its right handend is bent at right angles to the upper surface of the tab 32 to form a locking means in the form of a retaining arm 42.
  • the lower layer 38 at its right hand end has a reduced width and joins a ferrule base 44 having upstanding legs 46 on opposite sides. Insulation piercing tines 48 upstand from the base 44.
  • the tines 48 pierce the insulation and make contact with a surface of the conductor.
  • each connector 30 is arranged in a groove 11 in, for example, the base part 3, with the retaining arm 42 located in the slot 25.
  • the cover part 5 is then moved to the closed position of the housing 1 and member 13 engages within groove 17 to lock the connectors 30 within the housing 1. in this position, tabs 32 extend from the front face'27 of the housing.
  • FIG. 7 illustrates a molded connector housing 50 for housing receptacle connectors suitable for connection with the tab connectors 30.
  • Housing 50 is made from insulating material and has a substantially rectangular body 56 having a mating face 52 for engaging the front face 27 of housing 1. Cavities (not shown) are provided extending through the body 56 of the housing, each cavity being adapted to receive a receptacle connector (not shown) for engaging with the tab connector 30.
  • a pair of flexible latching members 58, 59 extend from the body 56, each latching member 58, 59 having at its free end an inwardly extending projection 60.
  • Member 59 is equal in width to the width of the body 56 but member 58 is of less width than the width of the body 56, and extends between two guide members 62 which extend from the body 56 in the same direction as the latching members 58, 59.
  • housing 1 and housing 50 When housing 1 and housing 50 are assembled together the ribs 21 on housing 1 are located in the guide members 62 and the housing 1 is pushed home between the latching members 58, 59 forcing the members 58 and 59 apart until the projections 60 engage the rear face 29 of the housing 1. In this position, front face 27 and mating face 52 engage each other. At the same time, tabs 32 of the tab connectors 30 engage with receptacle connectors (not shown) in housing 50.
  • the housing 1 may house receptacle connectors and not tab connectors as described above.
  • the connectors may be of the type suitable for connection to conductor wire and not flat conductor cable.
  • An insulating housing for an electrical connector comprising two mating parts, said parts being connected together by a reduced cross-section part forming a hinge, said hinge extending completely across said housing in a given direction, said two mating parts being of substantially constant cross-section throughout in a direction transverse to said given direction, whereby said housing is capable of being produced by an extrusion process, and a slot provided in the housing for receiving locking means on the electrical connector, which slot extends transversely of the given direction.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

An insulating housing for an electrical connector is formed by extruding plastics material to provide two housing parts connected together by a reduced cross-section part which forms a hinge extending in the extrusion direction so that the two housing parts are closable to embrace an electrical connector.

Description

United States Patent 91 Podmore et al.
[ Apr. 10, 1973 HOUSING FOR ELECTRICAL CONNECTORS [75] Inventors: Alan William Ronald Podmore, St. Albans; Ian Bruce Page, Hemel Hempstead, both of England [73] Assignee: AMP Incorporated, Harrisburg, Pa.
[22] Filed: Apr. 1, 1970 21 App1.No.: 24,749
[52] US. Cl. ..339/210 M, 339/211 [51] Int. Cl. ..H01r 13/50 [58] Field of Search ..339/198, 196, 43,
[56] References Cited UNITED STATES PATENTS 3,134,844 5/1964 Myers 174/94 X 3,332,053 7/1967 Busler ..339/210 R 3,388,370 6/1968 Elm ..339/98 3,399,374 8/1968 Pauza et a1. 3,500,292 3/1970 Enright et a1 ..339/97 FOREIGN PATENTS OR APPLICATIONS 233,059 3/196] Australia ..339/196R 688,848 6/1964 Canada ..339/208 Primary ExaminerMarvin A. Champion Assistant ExaminerRobert A. Hafer Att0rney-Curtis, Morris And Safford, William J. Keating, William l-lintze, Frederick W. Rating, John R. Hopkins, Adrian .1. La Rue and Jay L. Seitchik [57] ABSTRACT An insulating housing for an electrical connector is formed by extruding plastics material to provide two housing parts connected together by a reduced crosssection part which forms a hinge extending in the extrusion direction so that the two housing parts are closable to embrace an electrical connector.
1 Claim, 7 Drawing Figures PAIL NIH] APR 1 01973 sum 1 OF 2 PATENTEUAPR 1 0191s sum 2 [1F- 2 1 HOUSING FOR ELECTRICAL CONNECTORS Electrical connectors connected, for example, by crimping to the ends of wires may be retained within cavities formed in a housing of electrically insulating material.
The housings may be made as single moldings of plastics material. The molds for such housings are, however, usually complicated and expensive to manufacture.
According to the invention an insulating housing for an electrical connector is formed by extruding plastics material to provide two housing parts connected together by a reduced cross-section part which forms a hinge extending in the extrusion direction so that the two housing parts are closable to embrace an electrical connector.
Preferably, a plurality of integrally formed housings are provided by a single extrusion, the housings initially being partially severed from one another to facilitate the housings being completely separated afterassembly of the connectors to the housings. The extrusion can thus be fed as a strip of housings to a machine for assembling electrical connectors to the housings.
Complementary tongues and grooves formed in the extrusion direction may be'provided in the housing parts, which tongues and grooves co-operate to retain the electrical connector in position within the housing.
A slot may be provided in the housing for receiving locking means on the electrical connector, which slot extends transversely of the extrusion direction. I
The housing may have a pair of spaced parallel ribs on a surface of the housing extending in the extrusion direction for aligning the housing with a mating hous- Preferably, a groove in one housingpart is provided for engagement with a locking member in the other housing part for locking the housing parts in their closed position.
An embodiment of the invention will now b described by way of example, reference being made to the accompanying drawings, in which:
FIG. 1 is a cross-section of an electrical connector- FIG. 5 is a cross-section on the lines V-V of FIG. 4;
FIG. 6 is a cross-section on the lines VI-Vl of FIG.
4; and
FIG. 7 is a diagrammatic perspective view of a housing suitable for mating with a housing of FIG. 1.
As shown in FIGS. 1 and 2, an extruded housing 1 for electrical connectors comprises a base part 3 and a cover part 5 integrally connected together by a flexible hinge part 7 of reduced cross-section extending in the direction of extrusion such that parts 3 and 5 can be moved from an open position shown in FIG. 1, to a closed position shown in FIG. 2, in which a locking member 13 on the cover part 5 engages within a corresponding groove 17 on the base part 3. Base part 3 and cover part 5 are both provided with a plurality of grooves 11 and tongues 9 extending in the direction of extrusion, which in the closed position of the housing define a plurality of cavities 19 for receiving the electrical connectors. Ribs 21 of substantially semi-circular section are provided on the under surface of the base part 3.
Housing 1 is of substantially constant cross-section as seen in FIG. 1 and is extruded and then saw cut to the required length.
FIG. 3 shows part of an extrusion with saw cuts 23 made transversely of the length of the extrusion. The saw cuts define front and rear faces 27 and 29 respectively of a housing and are made of such a depth that materialremains in the ribs 21 to connect adjacent housings together.
Atransverse slot is also provided in the housing 1 for retaining electrical contacts within the housing as will be described below.
The slot 25 is arranged adjacent the front face 27 of the housing 1.
An electrical tab connector 30 suitable for crimping to an end of a flat conductor of a flat conductor cable is shown in FIGS. 4 to 6. Flat conductor cables consist of a plurality of parallel flat ribbon-like conductors arranged in side-by-side formation between sheets of insulating material. Thesheets are joined together along their longitudinal edges and between the conductors completely to insulate each conductor from its neighbor.
The ends of the conductors are usually provided with electrical connectors which have been crimped or in any other way connected to the ends of the conductors. As seen in FIG. 4, the connector 30 forms part of a strip of connectors arranged in head-to-tail formation. Each connector 30 has an electrical contact part in the form of a tab 32. Tab 32 is in the form of a strip of metal folded over-to form a double layer of material, the ends of; the fold abutting to form a seam 34 on the upper surface of the tab 32. The left hand end of the tab 32 (as seen in FIG. 4) is tapered and the lower layer 38 is connected to a slug 36 of material joining the connector 30 to the next adjacent connector 30 to the next adjacent connector 30 on the strip. The upper layer 40 of tab 32 at its right handend is bent at right angles to the upper surface of the tab 32 to form a locking means in the form of a retaining arm 42. The lower layer 38 at its right hand end has a reduced width and joins a ferrule base 44 having upstanding legs 46 on opposite sides. Insulation piercing tines 48 upstand from the base 44.
When a connector 30 is crimped to a flat conductor cable the edges of legs 46 are forced through the insulation of the cable on either side of the conductor, and are then bent inwardly towards each other to embrace the conductor.
At the same time, the tines 48 pierce the insulation and make contact with a surface of the conductor.
After a connector has been crimped to the end of each conductor of the conductor cable and the connectors have been separated from the strip, the connectors are ready for assembly within the housing 1. Each connector 30 is arranged in a groove 11 in, for example, the base part 3, with the retaining arm 42 located in the slot 25. The cover part 5 is then moved to the closed position of the housing 1 and member 13 engages within groove 17 to lock the connectors 30 within the housing 1. in this position, tabs 32 extend from the front face'27 of the housing.
FIG. 7 illustrates a molded connector housing 50 for housing receptacle connectors suitable for connection with the tab connectors 30. Housing 50 is made from insulating material and has a substantially rectangular body 56 having a mating face 52 for engaging the front face 27 of housing 1. Cavities (not shown) are provided extending through the body 56 of the housing, each cavity being adapted to receive a receptacle connector (not shown) for engaging with the tab connector 30. A pair of flexible latching members 58, 59 extend from the body 56, each latching member 58, 59 having at its free end an inwardly extending projection 60. Member 59 is equal in width to the width of the body 56 but member 58 is of less width than the width of the body 56, and extends between two guide members 62 which extend from the body 56 in the same direction as the latching members 58, 59.
When housing 1 and housing 50 are assembled together the ribs 21 on housing 1 are located in the guide members 62 and the housing 1 is pushed home between the latching members 58, 59 forcing the members 58 and 59 apart until the projections 60 engage the rear face 29 of the housing 1. In this position, front face 27 and mating face 52 engage each other. At the same time, tabs 32 of the tab connectors 30 engage with receptacle connectors (not shown) in housing 50.
The housing 1 may house receptacle connectors and not tab connectors as described above. The connectors may be of the type suitable for connection to conductor wire and not flat conductor cable.
We claim:
1. An insulating housing for an electrical connector, said housing comprising two mating parts, said parts being connected together by a reduced cross-section part forming a hinge, said hinge extending completely across said housing in a given direction, said two mating parts being of substantially constant cross-section throughout in a direction transverse to said given direction, whereby said housing is capable of being produced by an extrusion process, and a slot provided in the housing for receiving locking means on the electrical connector, which slot extends transversely of the given direction.

Claims (1)

1. An insulating housing for an electrical connector, said housing comprising two mating parts, said parts being connected together by a reduced cross-section part forming a hinge, said hinge extending completely across said housing in a given direction, said two mating parts being of substantially constant cross-section throughout in a direction transverse to said given direction, whereby said housing is capable of being produced by an extrusion process, and a slot provided in the housing for receiving locking means on the electrical connector, which slot extends transversely of the given direction.
US00024749A 1969-04-10 1970-04-01 Housing for electrical connectors Expired - Lifetime US3727174A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08443/69A GB1241251A (en) 1969-04-10 1969-04-10 Housings for electrical connectors
US2474970A 1970-04-01 1970-04-01

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US3727174A true US3727174A (en) 1973-04-10

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US00024749A Expired - Lifetime US3727174A (en) 1969-04-10 1970-04-01 Housing for electrical connectors

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US (1) US3727174A (en)
AT (1) AT301659B (en)
BE (1) BE748686A (en)
DE (1) DE2016367C3 (en)
FR (1) FR2043104A5 (en)
GB (1) GB1241251A (en)
NL (1) NL153734B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936126A (en) * 1973-12-07 1976-02-03 Dart Industries Inc. Electrical connector
FR2399746A1 (en) * 1977-08-02 1979-03-02 Weidmueller Kg C CROSS-LINK COMB FOR SERIAL TERMINALS
US4221352A (en) * 1978-09-25 1980-09-09 Panduit Corp. Flat cable clamp
US4274694A (en) * 1978-05-31 1981-06-23 Ferranti Limited Electrical connector having a plurality of in-line contacts
EP0037769A2 (en) * 1980-04-04 1981-10-14 The Bendix Corporation Electrical connector assembly and method for making an electrical connector assembly
US4354719A (en) * 1980-09-22 1982-10-19 Amp Incorporated Two-row electrical connector composed of connector modules
US4553800A (en) * 1982-10-15 1985-11-19 Virginia Patent Development Corp. Low profile modular plug
US4746309A (en) * 1986-03-12 1988-05-24 C. A. Weidmuller Gmbh & Co Closure element for multi-pole electrical connector
US4829255A (en) * 1987-05-22 1989-05-09 Amp Incorporated Probe for sealed connector
US4867705A (en) * 1987-04-30 1989-09-19 Amp Incorporated Electrical connector housing having hinged terminal-retaining means
US4904879A (en) * 1988-09-30 1990-02-27 Amp Incorporated Data current coupler and methods of making and assembling same
US4935582A (en) * 1989-01-06 1990-06-19 United Technologies Automotive, Inc. Splice enclosure for electrical wires
US5287618A (en) * 1990-03-13 1994-02-22 The Whitaker Corporation Method for orientation of an electrical cable
WO1997001198A1 (en) * 1995-06-20 1997-01-09 Siemens Aktiengesellschaft Plug connector with shorting jumper
US20100221937A1 (en) * 2009-02-27 2010-09-02 Pantech Co., Ltd. A wireless communication terminal with a cover moving in conjunction with a connector unit to open and closed positions
US20190267785A1 (en) * 2015-08-24 2019-08-29 Sticnstac, LLC Releasable holder for cables and conduit
US20230246431A1 (en) * 2015-08-24 2023-08-03 Sticnstac, LLC Releasable holder for cables and conduit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737559A (en) * 1972-07-03 1973-06-05 Itt Insulating cover for electrical connectors
US4076365A (en) * 1976-11-22 1978-02-28 Amp Incorporated Electrical connector having conductor spreading means
DE3012174C2 (en) * 1980-03-28 1984-11-29 Siemens AG, 1000 Berlin und 8000 München Multiple connectors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134844A (en) * 1962-05-14 1964-05-26 Aluminum Co Of America Electrical connectors
CA688848A (en) * 1964-06-16 Burndy Corporation Connector insulator
US3332053A (en) * 1964-02-27 1967-07-18 Busler Willard Le Roy Covering for a connecting member
US3388370A (en) * 1966-04-14 1968-06-11 Minnesota Mining & Mfg Solderless connector for insulated wires
US3399374A (en) * 1966-07-14 1968-08-27 Amp Inc Disengageable electrical connections
US3500292A (en) * 1968-07-12 1970-03-10 Minnesota Mining & Mfg Wire-connector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA688848A (en) * 1964-06-16 Burndy Corporation Connector insulator
US3134844A (en) * 1962-05-14 1964-05-26 Aluminum Co Of America Electrical connectors
US3332053A (en) * 1964-02-27 1967-07-18 Busler Willard Le Roy Covering for a connecting member
US3388370A (en) * 1966-04-14 1968-06-11 Minnesota Mining & Mfg Solderless connector for insulated wires
US3399374A (en) * 1966-07-14 1968-08-27 Amp Inc Disengageable electrical connections
US3500292A (en) * 1968-07-12 1970-03-10 Minnesota Mining & Mfg Wire-connector

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936126A (en) * 1973-12-07 1976-02-03 Dart Industries Inc. Electrical connector
FR2399746A1 (en) * 1977-08-02 1979-03-02 Weidmueller Kg C CROSS-LINK COMB FOR SERIAL TERMINALS
US4274694A (en) * 1978-05-31 1981-06-23 Ferranti Limited Electrical connector having a plurality of in-line contacts
US4221352A (en) * 1978-09-25 1980-09-09 Panduit Corp. Flat cable clamp
EP0037769A2 (en) * 1980-04-04 1981-10-14 The Bendix Corporation Electrical connector assembly and method for making an electrical connector assembly
EP0037769A3 (en) * 1980-04-04 1982-06-23 The Bendix Corporation Electrical connector assembly and method for making an electrical connector assembly
US4342494A (en) * 1980-04-04 1982-08-03 The Bendix Corporation Electrical connector assembly
US4354719A (en) * 1980-09-22 1982-10-19 Amp Incorporated Two-row electrical connector composed of connector modules
US4553800A (en) * 1982-10-15 1985-11-19 Virginia Patent Development Corp. Low profile modular plug
US4746309A (en) * 1986-03-12 1988-05-24 C. A. Weidmuller Gmbh & Co Closure element for multi-pole electrical connector
US4867705A (en) * 1987-04-30 1989-09-19 Amp Incorporated Electrical connector housing having hinged terminal-retaining means
US4829255A (en) * 1987-05-22 1989-05-09 Amp Incorporated Probe for sealed connector
US4904879A (en) * 1988-09-30 1990-02-27 Amp Incorporated Data current coupler and methods of making and assembling same
US4935582A (en) * 1989-01-06 1990-06-19 United Technologies Automotive, Inc. Splice enclosure for electrical wires
US5287618A (en) * 1990-03-13 1994-02-22 The Whitaker Corporation Method for orientation of an electrical cable
WO1997001198A1 (en) * 1995-06-20 1997-01-09 Siemens Aktiengesellschaft Plug connector with shorting jumper
US20100221937A1 (en) * 2009-02-27 2010-09-02 Pantech Co., Ltd. A wireless communication terminal with a cover moving in conjunction with a connector unit to open and closed positions
US7833029B2 (en) * 2009-02-27 2010-11-16 Pantech Co., Ltd. Wireless communication terminal with a cover moving in conjunction with a connector unit to open and closed positions
US20190267785A1 (en) * 2015-08-24 2019-08-29 Sticnstac, LLC Releasable holder for cables and conduit
US11626717B2 (en) 2015-08-24 2023-04-11 Sticnstac Llc Releasable holder for cables and conduit
US20230246431A1 (en) * 2015-08-24 2023-08-03 Sticnstac, LLC Releasable holder for cables and conduit
US12113344B2 (en) * 2015-08-24 2024-10-08 Sticnstac Llc Releasable holder for cables and conduit

Also Published As

Publication number Publication date
BE748686A (en) 1970-09-06
DE2016367B2 (en) 1980-03-20
NL7004785A (en) 1970-10-13
DE2016367A1 (en) 1970-10-15
AT301659B (en) 1972-09-11
GB1241251A (en) 1971-08-04
FR2043104A5 (en) 1971-02-12
NL153734B (en) 1977-06-15
DE2016367C3 (en) 1980-11-13

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