Self terminating connector and cable assembly

• US 5,030,122 A
• Filed: 05/07/1990
• Issued: 07/09/1991
• Est. Priority Date: 04/20/1989
• Status: Expired due to Term

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Sheesley, Wilmer L., Vees, Edward C., Kerlin, Harold W., Birch, Norman R., Dunbar, James G.
• Primary Examiner(s): Abrams, Neil
• Application Number:
  US07/519,968
• Time in Patent Office: 428 Days
• Field of Search: 439/578-585, 439/188, 439/620, 333/22 R, 200/51.09, 200/51.1, 338/220
• US Class Current: 439/188
• CPC Class Codes: H01R 13/65912 for shielded multiconductor cable coaxial cables with one conductor surrounded by shield H01R9/05; flat shielded cables H01R12/594
• CPC Class Codes: H01R 13/65915 Twisted pair of conductors surrounded by shield
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/46 comprising switches
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule
• CPC Class Codes: Y10S 439/944 Coaxial connector having circuit-interrupting provision effected by mating or having "dead" contact activated after mating

Abstract

Ends of electrical conductors 5 of an electrical cable are joined to corresponding self terminating, shielded connectors 4, each comprising, a conductive shell 20 connected to at least one corresponding sheath 8, a dielectric support 29 in the shell 20, a conductive switch contact 23 connected to a corresponding signal transmitting conductor 5 and carried by the dielectric support 29 for disconnect connection to an electrical contact inserted into the shielded connector 4, and an electrical circuit element 24 in contact with the shell 20 constructed for disconnect coupling with the switch contact 23 upon withdrawal of the electrical contact from the shielded connector 4, whereby the switch contact 23 is terminated electrically to the shell 20 through the circuit element 24.

Claims

1. A connector assembly comprising;

at least first and second connectors each having conductive shells,

said first and said second connectors having respective coupling portions for disconnectable connection to respective connectors for respective two electrical cables,

conductive signal contacts extending in said first and said second connectors and extending into third connector means joined to said first and said second connectors,

insulative material insulating the conductive contacts from one another and also from shells of said first and said second connectors, and

an electrical circuit connected to the shells of at least said first and said second connectors,

at least one circuit element having an impedance in the electrical circuit being disconnectable from a first of said conductive contacts when a corresponding said respective connector is disconnectably coupled to said first connector to interrupt the electrical circuit, and being disconnectable from a second of said conductive contacts when a corresponding said respective connector is disconnectably coupled to said second connector to interrupt the electrical circuit.

2. A connector assembly as recited in claim 1, comprising;

said third connector means being connected to a cable having two conductive shields encircling insulation material, in turn, encircling respective two signal conductors, and

said conductive contacts being connected to respective said signal conductors, said cable being constructed for connection to a computer work station.

3. A connector assembly as recited in claim 1, comprising;

each said circuit element includes a resistive material between conductive surface contacts, one of the surface contacts being engaged against the shells.

4. A connector assembly as recited in claim 1, comprising;

each of said conductive contacts being deflectable independently of each other to interrupt the electrical circuit connecting the corresponding conductive contact and said at least one circuit element.

5. A connector assembly as recited in claim 1, comprising;

a switch contact in the electrical circuit and in the first and second connectors disconnectably engaging the first and second contacts, and being disengageable from the first contact upon interruption of the electrical circuit, and being disengageable from the second contact upon interruption of the electrical circuit.

6. An electrical connector assembly for connection to multiple respective connectors comprising:

a first connector having a conductive shell,

a second connector having a conductive shell,

a third connector having a conductive shell connected directly to the shell of the first connector and the shell of the second connector,

a conductive first contact in the first connector extending in the third connector and connected to a corresponding signal transmitting second conductor extending into said third connector,

a conductive second contact in the second connector extending in the third connector and connected to a corresponding signal transmitting second conductor extending into said third connector,

an electrical circuit containing at least one circuit element having an impedance, said electrical circuit coupling said first conductor and said first contact and said first shell, and being interrupted to disconnect said first contact from said at least one circuit element by coupling said first connector to a corresponding respective connector,

said electrical circuit coupling said second conductor and said second contact and said second shell, and said being interrupted to disconnect said second contact from said at least one circuit element by coupling said second connector to a corresponding respective connector.

7. A connector assembly as recited in claim 6, comprising;

said third connector being connected to a cable having two conductive shields encircling insulation material, in turn, encircling said corresponding signal transmitting conductors.

8. A connector assembly as recited in claim 6, comprising;

each said circuit element includes a resistive material between conductive surface contacts, one of the surface contacts being engaged against the corresponding shell of each said first and said second connector.

9. A connector assembly as recited in claim 6, comprising;

each of said conductive contacts being deflectable independently of each other to interrupt the electrical circuit connecting the corresponding conductive contact and said at least one circuit element.

10. A connector assembly as recited in claim 6, comprising;

a switch contact in the electrical circuit and in the first and second connectors disconnectably engaging the first and second contacts, and being disengageable from the first contact upon interruption of the electrical circuit, and being disengageable from the second contact upon interruption of the electrical circuit.

11. An electrical connector assembly, useful in a network for connecting means incorporating transceivers for computer work stations and corresponding cable assemblies, comprising:

a first connector having a conductive shell and constructed for disconnectable connection to a corresponding connector of a corresponding said cable assembly,

a second connector having a conductive shell connected directly to the first connector, and constructed for disconnectable connection to a corresponding connector of a corresponding said cable assembly,

connecting means for connecting said first connector and said second connector to means for incorporating a transceiver for a computer work station,

a conductive first contact in the first connector constructed for disconnectable connection to a corresponding connector of a corresponding said cable assembly,

a conductive second contact in the second connector constructed for disconnectable connection to a corresponding connector of a corresponding said cable assembly,

a circuit including, at least one circuit element having an impedance, said first contact and said first shell, and said second contact and said second shell,

each said first contact and said second contact being disconnectable independently of the other from said at least one circuit element by said connection of a respective one of said first and second connectors to a corresponding said connector of a corresponding said cable assembly, and

each said first contact and said second contact being connectable independently of each other with said at least one circuit element by disconnection of a respective one of said first and second connectors from a corresponding connector of a corresponding said cable assembly, whereby said first connector and said second connector are self terminating independently of each other upon said disconnection.

12. An electrical connector assembly as recited in claim 11, comprising;

a first switch contact in said circuit engaging said first contact when said first contact is disconnected from a corresponding connector of a corresponding said cable assembly, and

a second switch contact in said circuit engaging said second contact when said second contact is disconnected from a corresponding connector of a corresponding said cable assembly.

13. An electrical connector assembly as recited in claim 12, comprising;

said first contact is deflectable toward and away from said first switch contact, and said second contact is deflectable toward and away from said second switch contact.

14. An electrical connector assembly as recited in claim 12, comprising;

said at least one circuit element engages said switch contacts and a corresponding shell of said first and said second contacts.

15. A connector assembly as recited in claim 11, comprising;

said shells are connected together as a composite shell.

16. A connector assembly as recited in claim 11, comprising;

said first and said second switch contacts are connected together and are connected to said at least one circuit element.

17. A connector assembly comprising;

at least first and second connectors each having conductive shells forming a composite shell,

said first and said second connectors having respective coupling portions for disconnectable connection to respective connectors for respective two electrical cables,

conductive signal contacts extending in said first and said second connectors and extending into third connecting means joined to said first and said second connectors for connecting said first and said second connectors to means for incorporating a transceiver of a computer work station,

insulative material insulating the conductive contacts from one another and also from the shells of said first and said second connectors, and

an electrical circuit connected to the shells of said first and said second connectors,

at least one circuit element having an impedance in the electrical circuit being disconnectable from a first of said conductive contacts when a corresponding said respective connector is disconnectably coupled to said first connector to interrupt the electrical circuit, and being disconnectable from a second of said conductive contacts when a corresponding said respective connector is disconnectably coupled to said second connector to interrupt the electrical circuit.

18. An electrical connector with two shielded electrical connectors for connection to respective connectors of corresponding cable assemblies, comprising:

a conductive shell for said two shielded connectors,

an insulative support within the shell,

at least one switch contact in the shell supported by the insulative support,

at least one circuit element having an impedance connected to said shell and to said at least one switch contact,

each of the shielded electrical connectors having an electrical contact disconnectably coupled with said at least one switch contact and extending within the shell for connection to one of the respective connectors,

each electrical contact is disconnected independently of the other from said at least one switch contact upon connection of said electrical contact with one of the respective connectors,

connecting means connected to the shielded electrical connectors for connecting the shielded electrical connectors to means for incorporating a transceiver of a computer work station, and

each of the shielded electrical connectors having a corresponding said electrical contact extending along said connecting means.