Arrangement for integrating a rectangular fiber optic connector into a cylindrical connector

• US 6,264,374 B1
• Filed: 09/09/1998
• Issued: 07/24/2001
• Est. Priority Date: 09/09/1998
• Status: Expired due to Term

• Current Assignee: Amphenol Corporation
• Original Assignee: Amphenol Corporation
• Inventors: Chapman, Robert Kenneth, Selfridge, Ritch Allen
• Primary Examiner(s): Bovernick, Rodney
• Assistant Examiner(s): Kim, Ellen E.
• Application Number:
  US09/149,568
• Time in Patent Office: 1,049 Days
• Field of Search: 385/78, 385/75-77, 385/81, 385/87, 385/53-55, 385/60, 385/58, 385/59, 385/62
• US Class Current: 385/78
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/3849 using mechanical protective elements, e.g. caps, hoods, sealing membranes G02B6/3816 takes precedence; provisionally see H01R13/44
• CPC Class Codes: G02B 6/3869 Mounting ferrules to connector body, i.e. plugs
• CPC Class Codes: G02B 6/3878 comprising a plurality of ferrules, branching and break-out means
• CPC Class Codes: G02B 6/3879 Linking of individual connector plugs to an overconnector, e.g. using clamps, clips, common housings comprising several individual connector plugs
• CPC Class Codes: G02B 6/3885 Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type optical ribbon cable G02B6/4403, G02B6/448
• CPC Class Codes: G02B 6/3888 Protection from over-extension or over-compression

Abstract

A fiber optic connector system is made up of a socket contact and a pin contact arranged to be installed in a cylindrical multiple contact connector, each contact including a fiber optic connector that has been terminated to a ribbon cable and captured between two halves of a cylindrical contact body, the socket contact being spring loaded to provide an engagement force between the two contacts when assembled into a housing. The pin and socket contacts may be installed in a wide variety of connector housings configured to receive cylindrical contacts, including the MIL-C-38999 family of connector shells, utilizing existing coupling and mounting arrangements, with the optional addition in the plug connector of a torsion spring biased shutter arranged to shield the ends of the fibers before coupling, and which is moved by a cam surface in the receptacle connector of the fiber optic connector system to uncover the ends of the fibers during coupling.

Claims

1. A cylindrical contact for a fiber optic connector, comprising:

a ferrule having a parallelepiped shaped, said ferrule having positioned therein the end of at least one optical fiber;

a contact housing including two contact housing members arranged to capture therebetween said ferrule and a portion of a fiber optic cable including said fiber and extending from said ferrule, said contact housing having a crimp ferrule portion and a generally cylindrical shape adapted to replace a contact of a cylindrical shaped electrical connector; and

a crimp sleeve arranged to crimp a strength member of said fiber optic cable to the crimp ferrule portion of the contact housing.

2. A contact as claimed in claim 1, wherein said contact further includes a sleeve member arranged to secure said two contact housing members to each other.

3. A contact as claimed in claim 2, wherein said sleeve member is a heat shrink sleeve.

4. A contact as claimed in claim 1, wherein said cable is a fiber optic ribbon cable.

5. A contact as claimed in claim 1, wherein said ferrule is an MT ferrule.

6. A contact as claimed in claim 1, wherein said housing is a pin contact housing.

7. A contact as claimed in claim 1, wherein said housing is a socket contact housing.

8. A cylindrical fiber optic connector system comprising a cylindrical connector shell in which are positioned a plurality of contacts, each contact including a ferrule having a parallelepiped shape, said ferrule having positioned therein the end of at least one optical fiber, a contact housing having a generally cylindrical shape and a crimp ferrule portion and a crimp sleeve arranged to crimp a strength member of said fiber optic cable to the crimp ferrule portion of the contact housing.

9. A cylindrical connector system as claimed in claim 8, wherein said contact housing includes two contact housing members arranged to capture therebetween said ferrule and a portion of a fiber optic cable including said fiber and extending from said ferrule.

10. A connector system as claimed in claim 8, wherein said connector shell houses an insert including a plurality of passages for said contacts, said contacts being retained in said connector shell by tines extending into said passages and engageable with collars on said contacts to prevent removal of said contacts until said tines are caused to disengage from said contacts by a contact removal tool.

11. A connector system as claimed in claim 8, further comprising a shutter mechanism for shielding said contacts before mating of said cylindrical connector shell.

12. A connector system as claimed in claim 11, wherein said shutter mechanism includes a rotatable shutter biased into a closed position by a torsion spring.

13. A connector system as claimed in claim 12, wherein said shutter is moved into an open position by a cam on a mating connector shell.

14. A connector system as claimed in claim 8, wherein said contact further includes a sleeve member arranged to secure said two contact housing members to each other.

15. A connector system as claimed in claim 14, wherein said sleeve member is a heat shrink sleeve.

16. A connector system as claimed in claim 8, wherein said cable is a fiber optic ribbon cable.

17. A connector system as claimed in claim 8, wherein said ferrule is an MT ferrule.

18. A connector system as claimed in claim 8, wherein said contact housing is a pin contact housing.

19. A connector system as claimed in claim 8, wherein said contact housing is a socket contact housing.

20. A connector system as claimed in claim 19, further comprising a fixed collar and an annular member arranged to slide on said contact housing in response to a bias force provided by a coil spring extending between said annular member and said collar.

21. A cylindrical contact for a fiber optic connector, comprising:

a ferrule having a parallelepiped shape, said ferrule having positioned therein the end of at least one optical fiber;

a contact housing including two contact housing members arranged to capture therebetween said ferrule and a portion of a fiber optic cable including said fiber and extending from said ferrule, said contact housing having a crimp ferrule portion and a generally cylindrical shape adapted to replace a contact of a cylindrically shaped electrical connector; and

a fixed collar and an annular member arranged to slide on said contact housing in response to a bias force provided by a coil spring extending between said annular member and said collar.