Back-to-back receptacle

• US 7,699,533 B2
• Filed: 07/18/2007
• Issued: 04/20/2010
• Est. Priority Date: 09/22/2003
• Status: Active Grant

• Current Assignee: Belden Canada ULC (Belden Inc.)
• Original Assignee: Belden CDT (Canada) Inc. (Belden Inc.)
• Inventors: Milette, Luc
• Primary Examiner(s): KIANNI, KAVEH C
• Application Number:
  US11/779,335
• Publication Number:
  US 20080013890A1
• Time in Patent Office: 1,007 Days
• Field of Search: 385/75, 385/53, 385/92
• US Class Current: 385/75
• CPC Class Codes: G02B 6/3831 comprising a keying element on the plug or adapter, e.g. to forbid wrong connection keying element on the ferrule G02B6/3851; keying element for electrical coupling H01R13/64
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on

Abstract

A back-to-back receptacle and system for providing selective interconnection between a pair of optic fibres. The system comprises a receptacle comprising a pair of back-to-back receptacle sockets, with at least a first of the sockets configured to one of a plurality of predefined receptacle keying geometries, a first connector plug terminating the first optic fibre, the plug adapted for insertion into the first receptacle socket, the plug configured to one of a plurality of predefined connector keying geometries and a second connector plug terminating the second optic fibre, the plug adapted for insertion into a second of the back-to-back receptacle sockets. At least one of the predefined connector keying geometries matches at least one of the predefined receptacle keying geometries. When the receptacle keying geometry of the first receptacle socket corresponds to the connector keying geometry of the first plug and optionally the receptacle geometry of the second of the back-to-back receptacle sockets corresponds to the connector keying geometry of the second plug, the first plug can be inserted in the first socket and the second plug can be inserted in the second socket bringing the first optic fibre into axial alignment with the second optic fibre.

Claims

1. A system for providing selective interconnection between a first optic fibre and a second optic fibre, the system comprising:

a set of receptacles, each receptacle comprising a pair of back-to-back receptacle sockets, each of said sockets conforming substantially to a standard and each socket in said pair of back-to-back receptacle sockets comprising a receptacle keying part configured to a same one of a plurality of predefined receptacle keying geometries, said receptacle keying part for each receptacle in said set of receptacles being different;

a set of connector plugs, each plug in said set of plugs conforming substantially to said standard and adapted for insertion into a first of said back-to-back receptacle sockets, said each plug comprising a connector keying part configured to one of a plurality of predefined connector keying geometries, said connector keying part for each plug in said set of connector plugs being different;

a first connector plug terminating the first optic fibre and a second connector plug terminating the second optic fibre, each of said first plug and said second plug selected from said set of connector plugs and conforming substantially to said standard, said plug comprising a connector keying part configured to one of a plurality of predefined connector keying geometries; and

wherein one and only one of said predefined connector keying geometries corresponds to one and only one of said predefined receptacle keying geometries; and

wherein when said receptacle keying geometry of said receptacle keying part of said first socket corresponds to a connector keying geometry of a connector keying part of said first plug and said receptacle keying geometry of said receptacle keying part of said second receptacle socket corresponds to a connector keying geometry of a connector keying part of said second plug, said first plug can be inserted in said first socket and said second plug can be inserted in said second socket bringing the first optic fibre into axial alignment with the second optic fibre.

2. The system of claim 1, wherein each of said connector plugs in said set of connector plugs comprises a cavity formed in a forward end thereof configured to one of said plurality of predefined connector keying geometries and a ferrule for stabilising a respective one of said optic fibres and each of said sockets comprises a raised ferrule receiving boss disposed on a rear wall thereof and configured to one of said plurality of predefined receptacle keying geometries, said boss comprising an opening adapted to receive one of said ferrules therein when said boss is inserted into said cavity, said openings defining a passageway there between.

3. The system of claim 2, wherein each of said ferrules is coaxial with their respective cavities and said openings are coaxial with said bosses.

4. The system of claim 1, wherein when said connector plugs are inserted into their respective sockets, an exposed end of the first optic fibre and an exposed end of the second optic fibre are brought substantially into contact.

5. The system of claim 4, wherein at least one of said exposed ends is moveable within its respective connector plug in a direction of insertion from a normally forward position, and wherein when said connector plugs are inserted into their respective sockets, the exposed ends come into contact, thereby forcing the at least one moveable exposed ends away from said normally forward position while maintaining said exposed ends in contact.

6. The system of claim 5, wherein the moveable exposed end is biased normally forward by a spring arranged coaxially with the optic fibre.

7. A set of receptacles for providing selective interconnection between first and second fibre optic cables, each cable comprising a connector plug conforming substantially to a standard and comprising a connector keying part having a same one of a plurality of predefined connector keying geometries, said set of receptacles comprising:

a plurality of receptacles, each of said receptacles comprising a pair of back-to-back receptacle sockets, each of said sockets in each of said pair conforming substantially to the standard and wherein for each of said plurality of receptacles both of said pair of sockets comprises a receptacle keying part having a shape corresponding to a unique one of a plurality of predefined receptacle keying geometries;

wherein each of the connector keying geometries corresponds to one of said predefined receptacle keying geometries; and

wherein when a receptacle keying geometry of said receptacle keying part of a first of said back-to-back receptacle sockets corresponds to a connector keying geometry of the connector keying part of the connector plug of the first cable and when a receptacle keying geometry of said receptacle keying part of a second of said back-to-back receptacle socket corresponds to a connector keying geometry of the connector keying part of the connector plug of the second cable, the connector plug of the first cable can be inserted in said first socket and the connector plug of the second cable can be inserted in said second socket, thereby interconnecting the first and second cables.

8. The set of receptacles of claim 7, wherein the fibre optic cables each comprise an optic fibre and said receptacle further comprises a passageway between said first and second back-to-back sockets and into which the optic fibres are inserted.

9. The set of receptacles of claim 7, wherein each of said connector plugs further comprises a ferrule for stabilising a respective one of said optic fibres, each of said sockets comprises a raised ferrule receiving boss disposed on a rear wall thereof and configured to one of said plurality of predefined receptacle keying geometries, each of said plugs comprises a cavity formed in a forward end thereof configured to one of said plurality of predefined connector keying geometries and each of said bosses further comprises an opening adapted to receive one of said ferrules therein when said boss is inserted into said cavity, said openings defining a passageway there between.

10. The set of receptacles of claim 7, wherein each of said sockets comprises a raised boss disposed therein and configured to one of said plurality of predefined receptacle keying geometries and each of the connector plugs comprises a cavity formed in a forward end thereof configured to one of the plurality of predefined connector keying geometries.

11. A system for providing interconnection between a first optic fibre and a second optic fibre, the system comprising:

a set of receptacles, each receptacle in said set comprising a pair of back-to-back receptacle sockets, each of said sockets conforming substantially to a standard and wherein for each of said plurality of receptacles, a first of said sockets in said pair of back-to-back receptacle sockets comprises a receptacle keying part configured to a unique one of a plurality of predefined receptacle keying geometries; and

a first connector plug terminating the first optic fibre, said plug adapted for insertion into said first socket, said plug comprising a connector keying part configured to one of a plurality of predefined connector keying geometries; and

a second connector plug terminating the second optic fibre, said plug inserted into a second of said back-to-back receptacle sockets; and

wherein at least one of said predefined connector keying geometries matches at least one of said predefined receptacle keying geometries; and

wherein when a receptacle keying geometry of said keying part of said first receptacle socket corresponds to said connector keying geometry of said keying part of said first plug, said first plug can be inserted in said first socket bringing said first optic fibre into axial alignment with said second optic fibre.

12. The system of claim 11, wherein said first socket comprises a first raised ferrule receiving boss disposed on a rear wall thereof and configured to one of said plurality of predefined receptacle keying geometries and said first plug comprises a first cavity formed in a forward end thereof configured to one of said plurality of predefined connector keying geometries and said second socket comprises a second raised ferrule receiving boss disposed on a rear wall thereof and said second plug comprises a cavity formed in a forward end thereof.

13. The system of claim 11, wherein when said connector plugs are inserted into their respective sockets, an exposed end of the first optic fibre and an exposed end of the second optic fibre are brought substantially into contact.

14. The system of claim 13, wherein each of said connector plugs further comprises a ferrule for stabilising a respective one of said optic fibres and each of said bosses further comprises an opening adapted to receive one of said ferrules therein when said boss is inserted into said cavity, said openings defining a passageway there between.

15. The system of claim 14, wherein each of said ferrules is coaxial with their respective cavities and said openings are coaxial with said bosses.

16. A set of receptacles for providing interconnection between first and second fibre optic cables, the first cable comprising a connector plug conforming substantially to a standard and comprising a connector keying part having one of a plurality of predefined connector keying geometries, the set of receptacles comprising:

a plurality of receptacles, each of said receptacles comprising first and second back-to-back receptacle sockets, each of said sockets conforming substantially to the standard, wherein for each of said plurality of receptacles said first socket comprises a receptacle keying part having a shape corresponding to a unique one of a plurality of predefined receptacle keying geometries;

wherein each of the connector keying geometries corresponds to one of said predefined receptacle keying geometries; and

wherein a connector plug of the second cable conforms substantially to the standard and can be inserted into said second receptacle socket; and

wherein when said receptacle keying geometry of said receptacle keying part corresponds to the connector keying geometry of the connector keying part of the connector plug of the first cable, the connector plug of the first cable can be inserted in said first socket, thereby interconnecting the first and second cables.

17. The set of receptacles of claim 16, wherein the fibre optic cables each comprise an optic fibre and said receptacle further comprises a passageway between said first and second back-to-back sockets and into which the optic fibres are inserted.