IP Library › Granted Patent US 12,353,024
Granted Patent B2
US 12,353,024 · App. 18/221,352 · Granted Jul 8, 2025

Multiports and optical connectors with rotationally discrete locking and keying features

Inventors: Thierry Luc Alain Dannoux (Avon, FR); Joel Christopher Rosson (Hickory, NC); Felice Scotta (Savingny le Temple, FR)
Assignee: CORNING RESEARCH & DEVELOPMENT CORPORATION
G02B6/3879G02B6/3825G02B6/3826G02B6/3831G02B6/3851G02B6/3869G02B6/387G02B6/3873G02B6/3885G02B6/381G02B6/3821G02B6/3837G02B6/3841G02B6/3843G02B6/3849G02B6/3871G02B6/3887G02B6/3889G02B6/389G02B6/3893G02B6/3895G02B6/3897G02B6/4262G02B6/4401G02B6/4446G02B6/4471G02B6/4472G02B6/4477G02B6/4479
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Quick Facts
Patent No.
US 12,353,024
App. No.
18/221,352
Granted
Jul 8, 2025
Kind
B2
Abstract

Fiber optic connectors and connectorized fiber optic cables include connector housings having locking portions defined on the connector housing that allow the connector housing to be selectively coupled to a corresponding push-button securing member of a multiport assembly. Methods for selectively connecting a fiber optic connector to, and disconnecting the fiber optic connector from the multiport assemblies allow for connector housings to be forcibly and nondestructively removed from the multiport assembly.

Claims (46)

1. A fiber optic connector, comprising:

a ferrule comprising an optical fiber bore; and

a connector housing comprising:

a rotationally discrete keying portion defined on an outer surface of the connector housing, wherein the rotationally discrete keying portion comprises a recessed portion of the connector housing with an unobstructed line of sight from the rotationally discrete keying portion to a leading edge plane of the connector housing along an advancing direction of the fiber optic connector;

a front portion of the connector housing comprising a rectangular cross-section having planar sides, and a rear portion of the connector housing comprising a curved outer surface; and

a rotationally discrete locking portion defined on the outer surface of the connector housing that interrupts the nominal housing portion as a negative cut-out, the rotationally discrete locking portion comprising a port engagement face and a locking portion recess positioned rearward of the port engagement face.

2. The fiber optic connector of claim 1 , wherein the port engagement face is rearwardly facing.

3. The fiber optic connector of claim 2 , wherein the locking portion recess is obstructed from the leading edge plane of the connector housing along the advancing direction of the fiber optic connector.

4. The fiber optic connector of claim 1 , wherein the keying portion comprises a pair of rotationally discrete contact surfaces that are accessible without obstruction from the leading edge plane of the connector housing.

5. The fiber optic connector of claim 4 , wherein each of the rotationally discrete contact surfaces of the keying portion lie in planes that extend orthogonally to a plane of the port engagement face.

6. The fiber optic connector of claim 4 , wherein each of the rotationally discrete contact surfaces of the keying portion lie in planes that intersect the port engagement face.

7. The fiber optic connector of claim 1 , wherein the port engagement face of the locking portion is formed from an edge-to-edge cross sectional cut-out of the connector housing.

8. The fiber optic connector of claim 7 , wherein a rotational arc θ 2 circumscribed by the edge-to-edge cross sectional cut-out forming the port engagement face is less than 90 degrees.

9. The fiber optic connector of claim 1 , wherein the keying portion of the connector housing extends closer to the front portion of the connector housing than does the locking portion of the connector housing.

10. The fiber optic connector of claim 1 , wherein:

the keying portion comprises a pair of rotationally discrete contact surfaces that are accessible without obstruction from the leading edge plane of the connector housing;

each of the rotationally discrete contact surfaces of the keying portion lie in planes that extend parallel to a longitudinal axis of the connector housing; and

the port engagement face of the locking portion lies in a plane that is intersected by the longitudinal axis of the connector housing.

11. The fiber optic connector of claim 1 , wherein:

the keying portion and the locking portion circumscribe respective rotational arcs θ 1 , θ 2 relative to a longitudinal axis of the connector housing; and

the rotational arcs θ 1 , θ 2 are mutually exclusive such that the keying portion and the locking portion are defined on different surface portions of the outer surface of the connector housing.

12. The fiber optic connector of claim 1 , wherein a rotational arc θ 1 circumscribed by a width of the keying portion relative to a longitudinal axis of the connector housing is less than a rotational arc θ 2 circumscribed by the width of the locking portion relative to the longitudinal axis of the connector housing.

13. The fiber optic connector of claim 1 , wherein:

the connector housing further comprises a transition region between the front portion of the connector housing and the locking portion of the connector housing; and

the keying portion of the connector housing extends at least partially into the transition region of the connector housing.

14. The fiber optic connector of claim 13 , wherein the keying portion extends only partially into the transition region of the connector housing.

15. The fiber optic connector of claim 13 , wherein a length of the keying portion exceeds a length of the transition region along a direction aligned with a longitudinal axis of the connector housing.

16. The fiber optic connector of claim 13 , wherein a length of the keying portion exceeds a length of the front portion of the connector housing along a direction parallel to a longitudinal axis of the connector housing.

17. The fiber optic connector of claim 1 , wherein the port engagement face of the locking portion, is formed from at least one flat surface.

18. The fiber optic connector of claim 1 , wherein the rotationally discrete locking portion is defined on the outer surface of the connector housing as a cut-out comprising:

a rearward-facing cut-out surface extending along a portion of a plane intersecting the longitudinal axis of the connector housing at an acute angle α 1 ; and

a forward facing cut-out surface intersecting the rearward-facing cut-out surface and extending along a portion of a plane intersecting the longitudinal axis of the connector housing at an angle α 2 that is larger than the acute angle α 1 .

19. The fiber optic connector of claim 18 , wherein α 2 ≤180° and α 1 is betweein 60° and 90°.

20. The fiber optic connector of claim 1 , wherein the port engagement face defines a plane that intersects the longitudinal axis at an angle that is less than 30 degrees from perpendicular.

21. The fiber optic connector of claim 1 , the locking portion recess comprises a planar surface that is oriented transverse to the port engagement face and that extends at least partially across the outer surface of the connector housing.

22. The fiber optic connector of claim 1 , wherein the rotationally discrete keying portion comprises a pair of rotationally discrete contact surfaces that interrupt the nominal housing portion as a negative cut-out.

23. A method for connecting a fiber optic connector to a multiport assembly, the method comprising:

providing a fiber optic connector comprising a ferrule and a connector housing, wherein the ferrule comprises an optical fiber bore and the connector housing comprises:

a rotationally discrete keying portion defined on the outer surface of the connector housing, and

a rotationally discrete locking portion defined on the outer surface of the connector housing and interrupts the nominal housing portion as a negative cut-out, the locking portion comprising a port engagement face, wherein the rotationally discrete locking portion comprises a locking portion recess positioned rearward of the port engagement face;

advancing the fiber optic connector along the advancing direction into an optical connector port of a multiport assembly comprising at least one optical adapter;

aligning the rotationally discrete keying portion of the connector housing with a complementary rotationally discrete keying portion associated with the optical connector port to permit the rotationally discrete locking portion of the connector housing to engage a rotationally discrete locking portion of a push-button securing member associated with the optical connector port; and

engaging the rotationally discrete locking portion of the connector housing with the rotationally discrete locking portion of the push-button securing member associated with the optical connector port.

24. The method of claim 23 , wherein the port engagement face is rearwardly facing.

25. The method of claim 23 , wherein the keying portion associated with the optical connector port comprises at least one rotationally discrete contact surface in unobstructed line of sight with an open end of a connection port passageway of the optical connector port.

26. The method of claim 23 , wherein engaging the rotationally discrete locking portion of the connector housing with the rotationally discrete locking portion of the push-button securing member is subsequent to aligning the rotationally discrete keying portion of the connector housing with the complementary rotationally discrete keying portion associated with the optical connector port.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 12, 2023
From: DANNOUX, THIERRY LUC ALAIN; ROSSON, JOEL CHRISTOPHER; SCOTTA, FELICE
To: CORNING RESEARCH & DEVELOPMENT CORPORATION
Reel/Frame 064233/0766 →
Continuity (8)
Continuation 17072545 · Oct 16, 2020
Continuation 16516551 · Jul 19, 2019
Continuation 16018988 · Jun 26, 2018
Continuation In Part PCTUS2017064072 · Nov 30, 2017
Provisional Application 62526018 · Jun 28, 2017
Provisional Application 62526195 · Jun 28, 2017
Provisional Application 62526011 · Jun 28, 2017
Related Publication 20230358968A1 · Nov 9, 2023
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