Premise wiring system and components therefor

• US 4,606,595 A
• Filed: 04/25/1984
• Issued: 08/19/1986
• Est. Priority Date: 04/25/1984
• Status: Expired due to Fees

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Dola, Frank P.
• Primary Examiner(s): MCQUADE, JOHN P
• Application Number:
  US06/603,803
• Time in Patent Office: 846 Days
• Field of Search: 174/117 F, 339/17 F, 339/176 MF, 339/176 M, 339/206 R, 339/206 P, 339/97 P, 339/98, 339/99 R
• US Class Current: 439/404
• CPC Class Codes: H01B 7/0823 Parallel wires, incorporated in a flat insulating profile
• CPC Class Codes: H01R 13/26 Pin or blade contacts for sliding co-operation on one side only for modular jack type connectors H01R24/62
• CPC Class Codes: H01R 25/165 Connecting locations formed by surface mounted apparatus
• CPC Class Codes: H01R 4/242 the contact members being plates having a single slot
• CPC Class Codes: H02G 3/00 Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles installations of bus-bars H02G5/00; overhead installations H02G7/00; installations in or on the ground H02G9/00

Abstract

A premise wiring system for telephones and the like is formed by a three-wire flat cable one end of which is terminated by a plug, the cable having at least one jack connected thereto at a position spaced from the plug and possibly a splice joining cable segments. Both the plug and jack are configured to have first and second terminals each terminal having a mating first end and an oppositely-directed insulation-piercing conductor-engaging second end with the second end of the first terminals configured to engage the outer conductors of the cable while the second end of the second terminal is configured to engage only the center conductor of the cable so that, regardless of the changes in direction imparted to the cable, the plug jack and splice can be terminated thereon effecting proper connection regardless of orientation. The splice is similarly configured but contains three double-ended terminals which engage like conductors of adjacent cable segments.

Claims

1. A two signal wiring system to provide on-site wiring of telephone and like two wire circuits in which wires to all components must have like proper orientation in order for the system to be functional, the said system comprising:

a three-wire flat cable formed by three elongate conductors in fixed parallel spaced relation within an extruded insulation, the outer conductors forming a first circuit and the central conductor forming a second circuit, the central conductor having a cross-sectional area substantially equal to the sum of the cross-sectional areas of said outer conductors; and

at least one termination device having a front housing of insulative material defining a cable receiving rear face with at least two terminal receiving cavities opening on said rear face, a terminal received in each said cavity with at least one insulation piercing conductor engaging portion extending from said face, and a cover enclosing said rear face.

2. The system according to claim 1, wherein said cable is telephone cable having the center conductor as a tip signal and the outer conductors as the ring signals.

3. A system according to claim 1 wherein said insulation of said cable is colorless and transparent whereby an underlying surface will show through and terminations of said conductors can be inspected.

4. A system according to claim 1 further comprising:

means to mount said cable on a surface.

5. A system according to claim 1 further comprising:

an adhesive backing on said cable for mounting it on a surface.

6. A system according to claim 1 wherein said cable has a transverse profile which facilitates proper alignment of said conductors during formation of said cable by extrusion of said insulation.

7. A system according to claim 1 wherein one of said front housing and said cover has at least one integral mounting stud and the other of said front housing and said cover has a like number of apertures each positioned to receive a stud therein in friction fit for orientation and assembly purposes.

8. A system according to claim 1 further comprising:

latching arms on one of said front housing and said cover and latching shoulders on the other of said front housing and said cover, said latching arms engaging respective latching shoulders to hold said front housings and said covers in an assembled condition.

9. A system according to claim 1 wherein each said front housing further defines:

a mating face oppositely directed from said rear face;

each said terminal cavity extending between said faces; and

each said terminal having a mating portion directed toward said mating face.

10. A system according to claim 1 wherein each said termination device is a telephone plug.

11. A system according to claim 1 wherein each said termination device is a telephone jack.

12. A system according to claim 1 wherein at least one of said termination devices is a splice having three terminals, each terminal capable of simultaneously engaging at least two of said cables.

13. A system according to claim 1 wherein each said terminal is an elongated conductive member having an insulation-piercing conductor-engaging portion at each end thereof.

14. A system according to claim 1 wherein one of said terminals has a pair of insulation-piercing conductor-engaging portions whereby both outside conductors of said cable are terminated by a single terminal.

15. A system according to claim 1 wherein said cover defines a cavity receiving a portion of said front housing therein.

16. A system according to claim 1 wherein said cover further defines means to mount said termination device.

17. A system according to claim 1 wherein said cover further defines a cable-receiving groove.

18. A system according to claim 1 wherein said cover further defines cavities receiving portions of said terminals therein.