US3609463A - Connectors for printed-circuit cards - Google Patents

Connectors for printed-circuit cards Download PDF

Info

Publication number
US3609463A
US3609463A US859748A US3609463DA US3609463A US 3609463 A US3609463 A US 3609463A US 859748 A US859748 A US 859748A US 3609463D A US3609463D A US 3609463DA US 3609463 A US3609463 A US 3609463A
Authority
US
United States
Prior art keywords
connector
panel
disposed
face
connection panel
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 - Lifetime
Application number
US859748A
Other languages
English (en)
Inventor
Bernard Andre Laboue
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.)
Bull General Electric NV
Original Assignee
Bull General Electric NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bull General Electric NV filed Critical Bull General Electric NV
Application granted granted Critical
Publication of US3609463A publication Critical patent/US3609463A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H01R12/87—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting automatically by insertion of rigid printed or like structures

Definitions

  • An arrangement for connecting circuits of printed-circuit cards to circuits of a connection panel comprising connectors fixed in parallel relationship to one another on said connection panel, each connector being provided with contact blades of which one end is soldered to a conductive surface of the connection panel and each of which is arranged to be pressed against a contact surface on a card inserted between two connector elements, under the action of an insulating push member pushed by a spring independent of the contact blade.
  • the presentinvention relates to improvements in connectors for printed-circuit cards and concerns an arrangement which is more particularly adapted for electrically connecting the conductors of printed-circuit cards to conductors of a connection panel also comprising printed circuits.
  • the present invention has for its object to obviate these disadvantages and relates to an arrangement in which electrical connections are made by means of connectors in which the conductive parts by which circuits are connected are of remarkably small length and in which the conductive surfaces by which the said contacts are made are each subjected at a number of points to a mechanical pressure which is exerted on these surfaces by means of mechanical members independent of the electrical circuits.
  • another object of the invention is to provide a connector, as defined above, in which the length of a conductive member capable of locally exhibiting a different characteristic impedance is so small that the resultant disadvantages are negligible or zero.
  • the invention concerns an arrangement for connecting circuits of printed-circuit cards to circuits of a printed-circuit connection panel which supports a plurality of connectors disposed in parallel relationship to one another at such a distance as to enable a card to be inserted between two consecutive connectors and to enable it to be maintained perpendicularly to the said panel, wherein each connector is characterized in that it comprises at least on one side corresponding to one face of a card provided with contact surfaces, a row of conductive and flexible contact blades, one portion of each of which is soldered to a conductive surface on the connection panel, while another portion thereof is situated against a contact surface on the card, a row of push members, each of which is arranged to be slidable in a recess situated opposite a contact blade, and a row of springs, each of which is arranged to urge a push member against a contact blade and to urge the latter against a corresponding contact surface on the card.
  • An arrangement comprising such connectors makes it possible to produce an assembly of extremely compact circuits in which the contacts between circuits are made with maximum reliability, with the introduction of minimum disturbance into the electrical characteristics of the circuits.
  • FIG. 1 is a sectional view of a part of an arrangement of connectors according to a first embodiment of the invention, this section being taken along the line 1-1 of FIG. 2,
  • FIG. 2 is a plan view of a part of the same arrangement as seen along the line 22 of H6. 1,
  • FIG. 3 is a plan view of a portion of a connection panel as seen along the line 3-3 of FIG. 1,
  • FIG. 4 illustrates a second form of construction of an arrangement of connectors as seen along the line 44 of FIG. 5.
  • FIG. 5 is a view in section along the line 5-5 of FIG. 4,
  • HO. 6 is an external view of a portion of a printed-circuit card as seen in the direction 6 of FlG. 1, showing an arrangement of the contact surfaces on the card,
  • F IG. 7 is a fragmentary sectional view constituting a variant of FIG. 4, and
  • FlG. 8 is a view in perspective of various parts of a connector of the type illustrated in FIGS. 4 and 5.
  • FIG. 1 shows a portion of an arrangement in which three connectors A, B and C respectively are mounted on a printedcircuit connection panel ll, the said three connectors being shown in section along the line 1-1 of FIG. 2.
  • the connectors of one assembly are identical in principle and the connectors A and C of FIG. 1 are only partly shown.
  • a printed-circuit card CA] is shown inserted between the connectors A and B and a second card CA2 is shown in the preparatory position for insertion, in which it is only engaged in guide means 12 arranged in known manner at the ends of the connectors (see also HO. 8) in order to ensure correct engagement of the cards between the connectors.
  • the connectors A, B and C are fixedly mounted on the connection panel H, for example by means of pins 14 situated at intervals along each connector so as to secure the latter on the connection panel in parallel relationship to other connectors and to maintain them at a distance X (FIGS. 1 and 4) which is determined in accordance with the thickness of the cards which are to be inserted between the said connectors.
  • a connector of like form may be employed in assemblies designed to receive cards of different thicknesses, in accordance with the distance X between the points at which the connectors are secured to the connection panel. in the arrangement illustrated in fragmentary form in FlGS.
  • each connector comprises an insulating body 15 provided with a base 16, a central partition 17 and lefthand and right-hand lateral walls 18 and 19 respectively, which are connected to a central partition by ribs 20 disposed on either side of the said partition.
  • the lateral walls are formed with left-hand and right-hand recesses 22 and 21 respectively, which are each situated between two ribs and each adapted to receive a push member 23 consisting of insulating material, which is freely slidable in a recess.
  • Each push member is provided, towards the exterior of the connector, with two bosses 24 and 25 and provided within the connector with two shoulders 26 and 27 arranged to prevent the push member from leaving the connector.
  • a spring element comprises a metal strip 29, which bears against the central partition 17 and is provided, on each side, with flexible blades 30 and 3
  • connection panel 11 may, like the printed-circuit cards, comprise a number of layers of printed circuits assembled in the thickness of one panel, which is provided (FIG. 3) on its upper face with conductive surfaces situated in rows 37 and 38 to the left and to the right respectively, for each connector and connected to electrical circuits of the panel.
  • These conductive surfaces are positioned so that they may each receive by soldering, by an appropriate method, the lower end of a conductive blade 40 to the left or 41 to the right, of which the other end is engaged in a slot 42 or 43 in the upper part of each of the lateral walls and in which it is retained by a barlike portion 44 adapted to engage in the said slot.
  • a bosses 45-46 Provided on each side of the slots are bosses 45-46 which are arranged to center the cover 32 on the connector.
  • Each contact blade extends past the bosses 24-25 of a push member.
  • these blades may be connected together, before fitting, at their upper end by means of a strip of insulating plastics (not shown).
  • a contact blade 41A belonging to the right-hand row of the connector B is soldered at its lower end to a conductive surface 38A of the row 38 (FIG, 3) of the connection panel.
  • the said blade extends past the bosses 24 and of a push member 23 and the upper end of this blade is retained in one of the slots 43 in the partition 19.
  • FIG. 6 shows the form and the relative arrangement of the contact surfaces 51 on a portion of the printed-circuit card CA2 as seen in the direction of the arrow 6 of FIG. 1.
  • Each push member receives the thrust of its corresponding spring at a point situated substantially on the axis of the said push member.
  • This thrust is transmitted by the two bosses of the push member at two points of the contact blade, which are situated symmetrically about the said axis. Consequently, the thrust exerted by the spring is substantially equally distributed among the bosses of the push member at two points of the contact blade bearing on a contact surface of a card, whereby perfect electrical contact is ensured at least at these two points. It is known that the friction of the contact surfaces on the contact blades of the connectors when a card is introduced contributes to cleaning the contact surfaces and to improving the electrical contacts.
  • FIGS. 4, 5 and 8 show another embodiment of the invention in an arrangement illustrated in section in FIGS. 4 and 5,
  • Each connector comprises an insulating body having a central partition 62 extending along the length of the connector, an upper partition 63 and lateral walls 64 and 65 to the left and to the right respectively, which are connected to the central partition by ribs 66 and 67 and formed with recesses 68 and 69 to the left and to the right respectively for push members 70 similar to the push members 23 of FIGS. 1 and 2.
  • the push members are subject to the action of springs 72 and 73, which are also connected to a central strip 74.
  • the arrangement of the insulating body of the connectors D, E and F corresponds to an inverted arrangement of the connectors A, B and C.
  • the contact blades are either formed of thin metal strips 75 and 76 disposed in parallel relationship and adhesively bonded by an appropriate method to the outside face of a thin insulating support sheet 77, or formed by deposition of conductive metal layers in the form of parallel bands.
  • the insulating strip provided with conductive bands is appropriately positioned on the upper face of the connection panel, whereafter the horizontal portions of the contact blades are welded by any appropriate method to the corresponding conductive surfaces of the connection panel.
  • the body of the connector provided with its push members and springs is positioned on the said panel and held in position thereon by pins 60.
  • the two edges of the support sheet 77 are thereafter raised and bent down on to the body of the connector, on which they are maintained when a plate 78 is thereafter secured by pins 79 extending through holes appropriately positioned in the plate 78, in the two edges of the insulating sheet 77 and in the body of the connector.
  • a printed-circuit card CA3 is provided on its two faces with components 54-55 which may form functional units such as amplifier devices, switching circuit or the like, of which the maximum overall dimensions are indicated by a dash-dotted line 58.
  • components 54-55 may form functional units such as amplifier devices, switching circuit or the like, of which the maximum overall dimensions are indicated by a dash-dotted line 58.
  • a similar arrangement may be provided on the cards CA l-CAZ which are employed with connectors A, B and C, in FIGS. 1 and 2.
  • the connectors are provided at their ends with plates 80-81 formed with guide grooves 12 and 13 (FIGS. 1, 4 and 8) which are adapted to guide the cards on their insertion into the conncc tors.
  • the distance X between the axes of two neighboring connectors is about 18 millimeters in the cases described.
  • the spacing between the contact blades may be equal to or less than 2.54 mm.
  • FIG. 7 illustrates a cutoff portion of a connector G similar to those shown in FIGS. 4, 5 and 8, but specially designed to introduce no interruption of impedance matching between the connected printed circuits.
  • the construction is generally similar to the preceding one, but in this embodiment a flexible insulating sheet is provided on its outside face with contact blades 91 adhesively secured or formed as already stated by a thin conductive metallic deposit, but in addition the insulating sheet is provided on its inside face with a conductive deposit 49 forming an earth surface and connected to an earth conductor of the connection panel 11. This connection may be obtained by means of one or more pins 94 also serving to secure the connector to the connection panel.
  • the characteristic impedance of the transmission line formed by each contact blade is equal to the characteristic impedance adopted for the printed circuits of the detachable cards and of the connection panel. There is therefore no longer any mismatch caused by the members of the connector.
  • each of said elements comprising:
  • each lateral wall being formed with a plurality of recesses a push member slidably disposed in each of said recesses, said push member consisting of insulating material and being provided with bosses,
  • each of said spring blades being disposed to urge one of said push members through the corresponding recess in order that the bosses of said push member may project outside of the associated lateral wall
  • each of said blades having one end thereof bonded to a conductive surface on said panel between the latter and an opposed connector body and having a central portion disposed opposite to an associated one of said push members whereby said central portion is urged towards a conductive surface on a printed-circuit card when the latter is inserted between and the corresponding connector bod and has its two edges turned down one upon the other and ixed on said connector body.
  • each of said sheets consists of a material resistant to the tin-soldering temperature, such as polyethylene terephthalate.
  • a connecting arrangement for detachably connecting a plurality of conductive surfaces, disposed on at least one face of a circuit board and spaced apart along one edge of said face, to conductive surfaces disposed on one face of a connection panel, said connecting arrangement being provided with at least one connector element comprising:
  • an elongated connector body of insulating material mounted on said one face of said connection panel, the elongated dimension of said body being oriented parallel to the plane of said one face of said connection panel and a lateral wall of said body extending along the length thereof being tangent to a plane perpendicular to the plane of said one face of said connection panel, said wall being provided with a plurality of apertures extending therethrough,
  • each of said spring members being disposed to urge the associated push member through the corresponding aperture to project outwardly from said lateral wall
  • each of said strips having one end thereof bonded to one of said conductive surfaces disposed on said one face of said connection panel between said panel and said connector body, having a central portion thereof disposed opposite to a respective one of said push members to provide for said control portion to be urged away from said wall by the corresponding push member, and having the other end thereof affixed to said body near the edge of said lateral wall remote from said panel.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
US859748A 1968-10-01 1969-09-22 Connectors for printed-circuit cards Expired - Lifetime US3609463A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR168305 1968-10-01

Publications (1)

Publication Number Publication Date
US3609463A true US3609463A (en) 1971-09-28

Family

ID=8655144

Family Applications (1)

Application Number Title Priority Date Filing Date
US859748A Expired - Lifetime US3609463A (en) 1968-10-01 1969-09-22 Connectors for printed-circuit cards

Country Status (5)

Country Link
US (1) US3609463A (enrdf_load_stackoverflow)
BE (1) BE739084A (enrdf_load_stackoverflow)
DE (1) DE1948925C3 (enrdf_load_stackoverflow)
FR (1) FR1604372A (enrdf_load_stackoverflow)
GB (1) GB1233853A (enrdf_load_stackoverflow)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702423A (en) * 1971-11-09 1972-11-07 Teradyne Inc Low-force printed circuit male connection apparatus
US3864012A (en) * 1974-02-22 1975-02-04 John M Cutchaw Electrical connector
US3922054A (en) * 1973-09-14 1975-11-25 Amp Inc Printed circuit electrical connector
US3934959A (en) * 1973-08-08 1976-01-27 Amp Incorporated Electrical connector
US3955875A (en) * 1973-11-22 1976-05-11 Compagnie Honeywell Bull (Societe Anonyme) Connector
US4008938A (en) * 1975-08-11 1977-02-22 International Telephone And Telegraph Corporation Electrical connector
US4072379A (en) * 1976-12-13 1978-02-07 Ncr Corporation Electric power distributing apparatus
FR2501454A2 (fr) * 1977-06-23 1982-09-10 Doloise Metallurgique Element de connexion pour etablir un contact elastique de pression avec au moins une surface conductrice
US4475781A (en) * 1982-12-08 1984-10-09 Amp Incorporated Bussing system for stacked array of panel boards
US4518210A (en) * 1983-08-10 1985-05-21 Lockheed Corporation Zero-insertion-force housing for circuit boards
US4582384A (en) * 1984-05-04 1986-04-15 Amp Incorporated Overmolded shielded connector
US4587596A (en) * 1984-04-09 1986-05-06 Amp Incorporated High density mother/daughter circuit board connector
US4626056A (en) * 1984-02-21 1986-12-02 Amp Incorporated Card edge connector
US4629270A (en) * 1984-07-16 1986-12-16 Amp Incorporated Zero insertion force card edge connector with flexible film circuitry
US4664458A (en) * 1985-09-19 1987-05-12 C W Industries Printed circuit board connector
US4755866A (en) * 1987-02-27 1988-07-05 United Technologies Corporation Electronic circuit module
US4818241A (en) * 1987-11-09 1989-04-04 Bell Communications Research, Inc. Electrical interconnection device using elastomeric strips
US4834660A (en) * 1987-06-03 1989-05-30 Harris Corporation Flexible zero insertion force interconnector between circuit boards
EP0374460A3 (en) * 1988-12-19 1990-12-27 International Business Machines Corporation Electric connector utilizing flexible electrical circuitry
US5171154A (en) * 1991-11-06 1992-12-15 Amp Incorporated High density backplane connector
USRE34190E (en) * 1986-05-27 1993-03-09 Rogers Corporation Connector arrangement
US5308257A (en) * 1993-02-01 1994-05-03 The Whitaker Corporation ZIF card edge connector utilizing flexible film circuitry
US5564931A (en) * 1994-05-24 1996-10-15 The Whitaker Corporation. Card edge connector using flexible film circuitry
US5595490A (en) * 1995-01-13 1997-01-21 Teradyne, Inc. Printed circuit board connectors
US5676559A (en) * 1995-07-06 1997-10-14 The Whitaker Corporation Zero insertion force (ZIF) electrical connector
US5704793A (en) * 1995-04-17 1998-01-06 Teradyne, Inc. High speed high density connector for electronic signals
EP0761025A4 (en) * 1994-05-17 1998-12-09 Beta Phase Inc CONNECTOR ASSEMBLY FOR THE ELECTRICAL INTERCONNECTION OF TWO ELEMENTS SUCH AS TWO PRINTED CIRCUIT PLATES
US20050009382A1 (en) * 2003-07-12 2005-01-13 Harting Electro-Optics Gmbh & Co. Kg Connector for connecting printed circuit boards

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344149A1 (fr) * 1976-03-08 1977-10-07 Amp Inc Connecteur electrique et assemblage d'organes de contact destines a ce connecteur
JPS60500643A (ja) * 1983-02-24 1985-05-02 アンプ　インコ−ポレ−テツド 単位構造を回路基板等に取り付けるためのコネクタ−組立体
US5421738A (en) * 1994-06-29 1995-06-06 Miraco, Inc. High-density printed circuit connector with pivotable spring

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702423A (en) * 1971-11-09 1972-11-07 Teradyne Inc Low-force printed circuit male connection apparatus
US3934959A (en) * 1973-08-08 1976-01-27 Amp Incorporated Electrical connector
US3922054A (en) * 1973-09-14 1975-11-25 Amp Inc Printed circuit electrical connector
US3955875A (en) * 1973-11-22 1976-05-11 Compagnie Honeywell Bull (Societe Anonyme) Connector
US3864012A (en) * 1974-02-22 1975-02-04 John M Cutchaw Electrical connector
US4008938A (en) * 1975-08-11 1977-02-22 International Telephone And Telegraph Corporation Electrical connector
US4072379A (en) * 1976-12-13 1978-02-07 Ncr Corporation Electric power distributing apparatus
FR2501454A2 (fr) * 1977-06-23 1982-09-10 Doloise Metallurgique Element de connexion pour etablir un contact elastique de pression avec au moins une surface conductrice
US4475781A (en) * 1982-12-08 1984-10-09 Amp Incorporated Bussing system for stacked array of panel boards
US4518210A (en) * 1983-08-10 1985-05-21 Lockheed Corporation Zero-insertion-force housing for circuit boards
US4626056A (en) * 1984-02-21 1986-12-02 Amp Incorporated Card edge connector
US4587596A (en) * 1984-04-09 1986-05-06 Amp Incorporated High density mother/daughter circuit board connector
US4582384A (en) * 1984-05-04 1986-04-15 Amp Incorporated Overmolded shielded connector
US4629270A (en) * 1984-07-16 1986-12-16 Amp Incorporated Zero insertion force card edge connector with flexible film circuitry
US4664458A (en) * 1985-09-19 1987-05-12 C W Industries Printed circuit board connector
USRE34190E (en) * 1986-05-27 1993-03-09 Rogers Corporation Connector arrangement
US4755866A (en) * 1987-02-27 1988-07-05 United Technologies Corporation Electronic circuit module
US4834660A (en) * 1987-06-03 1989-05-30 Harris Corporation Flexible zero insertion force interconnector between circuit boards
US4818241A (en) * 1987-11-09 1989-04-04 Bell Communications Research, Inc. Electrical interconnection device using elastomeric strips
EP0374460A3 (en) * 1988-12-19 1990-12-27 International Business Machines Corporation Electric connector utilizing flexible electrical circuitry
US5171154A (en) * 1991-11-06 1992-12-15 Amp Incorporated High density backplane connector
US5308257A (en) * 1993-02-01 1994-05-03 The Whitaker Corporation ZIF card edge connector utilizing flexible film circuitry
EP0761025A4 (en) * 1994-05-17 1998-12-09 Beta Phase Inc CONNECTOR ASSEMBLY FOR THE ELECTRICAL INTERCONNECTION OF TWO ELEMENTS SUCH AS TWO PRINTED CIRCUIT PLATES
US5564931A (en) * 1994-05-24 1996-10-15 The Whitaker Corporation. Card edge connector using flexible film circuitry
US5595490A (en) * 1995-01-13 1997-01-21 Teradyne, Inc. Printed circuit board connectors
US5704793A (en) * 1995-04-17 1998-01-06 Teradyne, Inc. High speed high density connector for electronic signals
US5676559A (en) * 1995-07-06 1997-10-14 The Whitaker Corporation Zero insertion force (ZIF) electrical connector
US20050009382A1 (en) * 2003-07-12 2005-01-13 Harting Electro-Optics Gmbh & Co. Kg Connector for connecting printed circuit boards

Also Published As

Publication number Publication date
GB1233853A (enrdf_load_stackoverflow) 1971-06-03
DE1948925C3 (de) 1980-04-03
DE1948925B2 (de) 1979-07-26
DE1948925A1 (de) 1970-05-21
BE739084A (enrdf_load_stackoverflow) 1970-03-02
FR1604372A (enrdf_load_stackoverflow) 1971-11-08

Similar Documents

Publication Publication Date Title
US3609463A (en) Connectors for printed-circuit cards
US3638163A (en) Connector for electrically interconnecting two parallel surfaces
US4095866A (en) High density printed circuit board and edge connector assembly
US2701346A (en) Connector for circuit cards
US3806767A (en) Interboard connector
US3082398A (en) Electrical connectors
US3631381A (en) Multiple electrical connector
US4199209A (en) Electrical interconnecting device
US3660803A (en) Electrical connectors
US6561850B2 (en) High speed card edge connectors
US5805429A (en) Rail assembly
US3340440A (en) Multi-circuit separable connector for printed circuit boards and the like
EP0039175A2 (en) Electrical connecting assembly for circuit cards
US3605062A (en) Connector and handling device for multilead electronic elements
SE318023B (enrdf_load_stackoverflow)
US3631380A (en) Universal circuit board connector
CA2532378A1 (en) High-speed electrical connector
US3230493A (en) Plug-in contact assembly for printed circuit boards
US5173056A (en) Multipole plug-in connector
US5788510A (en) Socket having a staggered conductive path through multiple memory modules
US3731251A (en) Means for terminating flat cable
US3185761A (en) Fabricated circuit structure
US6000950A (en) Connector for flexible printed cards
US3184650A (en) Circuit supporting apparatus
EP0393251B1 (en) Modular connector system with high contact element density surface mounted connectors