Multifiber optical cable connector

• US 4,744,629 A
• Filed: 08/16/1985
• Issued: 05/17/1988
• Est. Priority Date: 08/16/1985
• Status: Expired due to Fees

• Current Assignee: Augat Incorporated 89 Forbes Boulevard Mansfield Massachusetts A Corporation of
• Original Assignee: Augat, Inc. (TE Connectivity Limited)
• Inventors: Foglia, Carmelo, Bertoglio, Guido
• Primary Examiner(s): Gensler, Paul
• Assistant Examiner(s): Lee, James C.
• Application Number:
  US06/766,902
• Time in Patent Office: 1,005 Days
• Field of Search: 350/96.20, 350/96.21, 350/96.22, 350/96.23, 174/92, 339/196 R, 339/208
• US Class Current: 385/59
• CPC Class Codes: G02B 6/3861 Adhesive bonding adhesives in general C09J
• CPC Class Codes: G02B 6/3865 fabricated by using moulding techniques shaping techniques of plastic materials in general B29C; producing plastic optical fiber connectors B29D11/0075
• CPC Class Codes: G02B 6/387 Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together
• CPC Class Codes: G02B 6/3878 comprising a plurality of ferrules, branching and break-out means
• CPC Class Codes: G02B 6/38875 Protection from bending or twisting
• CPC Class Codes: G02B 6/4439 Auxiliary devices
• CPC Class Codes: G02B 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps
• CPC Class Codes: G02B 6/44715 Fan-out devices
• CPC Class Codes: G02B 6/4472 Manifolds
• CPC Class Codes: G02B 6/4473 Three-way systems

Abstract

A connector for a multifiber optical cable in which each of the fibers is retained on a common housing which includes receptacle portions for retaining, respectively, a fitting for the cable, and each ferrule to which respective optical fibers are secured. The housing is preferably molded of a plastic material with intergral constituents for retaining the ferrules and cable fitting. The ferrules extend from the housing and can be secured to respective optical connectors or other devices.

Claims

1. A multifiber optical cable connector for receiving a multifiber optical cable secured in a fitting and arranging individual optical fibers thereof, each secured in a ferrule, for subsequent interconnection, comprising:

a housing having a first unitary section and a second unitary section of dissimilar shape;

said first unitary section of said housing integrally including

a first receptacle portion including integral means for engaging external surfaces of the fitting secured to the optical cable to rigidly retain the optical cable in said housing;

at least two second receptacle portions and wherein each second receptacle portion includes integral means for independently engaging confronting surfaces of the ferrule securing the respective optical fiber of the optical cable to loosely retain the ferrule therein to permit independent alignment thereof by axial and transverse movement of the ferrule with respect to said external surfaces engaging means;

said second unitary section of said housing having first and second means cooperative with said integral external surfaces engaging means and said integral confronting surfaces engaging means of said first and second receptacle portions, respectively, for rigidly retaining the fitting and loosely retaining each ferrule within said housing with said first and second unitary sections secured together; and

means for securing said first and second unitary sections of said housing together.

2. The connector of claim 1 wherein said first and second receptacle portions each include a recess having a circular bottom surface and said integral external surfaces engaging means and said integral confronting surfaces engaging means, respectively, of said first and second receptacle portions each further comprise outwardly extending flat wall surfaces and inwardly extending portions on an outer end of each said wall surface to rigidly retain the fitting and loosely retain the ferrules, respectively.

3. The connector of claim 1 wherein said integral external surfaces engaging means of said first receptacle portion includes

a pair of outwardly extending tabs operative to engage the external surfaces of the cable fitting, and inwardly extending portions at an upper end of each said tab operative to rigidly retain the fitting;

and

wherein said integral confronting surfaces engaging means of said second receptacle portions each include a pair of outwardly extending tabs engaging confronting surfaces of the ferrule, and outwardly extending portions at an upper end of each said tab operative to loosely retain the ferrule;

said tabs of said second receptacle portions being sufficiently resilient to permit the ferrules to be snapped into place in said first unitary section and to be removed therefrom, and sufficiently rigid to loosely retain each of the ferrules in place therein to permit independent alignment thereof by axial and transverse movement thereof with respect to said tabs.

4. A multifiber optical cable connector for receiving a multifiber optical cable secured in a fitting and arranging individual optical fibers thereof, each secured in a ferrule, for subsequent interconnection, comprising:

a housing having a first unitary section and a second unitary section of dissimilar shape;

said first unitary section of said housing integrally including

a first receptacle portion including a recess and wall surfaces outwardly extending from said recess and wherein said wall surfaces engage external surfaces of the fitting of the optical cable to rigidly retain the optical cable in said housing;

at least three second receptacle portions each having a recess and outwardly extending wall surfaces independently engaging confronting surfaces of the respective ferrule to which the respective optical fiber is secured to loosely retain the ferrule therein to permit independent alignment thereof by axial and transverse movement thereof with respect to said outwardly extending wall surfaces;

said second unitary section of said housing having first and second means cooperative with said wall surfaces of said first and second receptacle portions, respectively, for rigidly retaining the fitting and loosely retaining each ferrule within said housing with said first and second unitary sections secured together; and

means for securing said first and second unitary sections of said housing together.

5. The connector of claim 4 wherein said first unitary section of said housing further comprises a plurality of guides along which individual optical fibers are arranged, and wherein said plurality of guides prevent undue bending of the fibers.

6. The connector of claim 4 wherein each said first and second unitary sections of said housing is an integral molded plastic construction.

7. A multifiber optical cable connector for receiving a multifiber optical cable secured in a fitting and arranging individual optical fibers thereof, each secured in a ferrule, for subsequent interconnection, comprising:

a first unitary housing section having a first shape and including

an integral first receptacle portion including means for engaging external surfaces of the fitting secured to the multifiber optical cable to rigidly retain the multifiber optical cable,

at least two integral second receptacle portions and wherein each said integral second receptacle portion includes means for independently engaging confronting surfaces of the ferrule securing the respective optical fiber of the multifiber optical cable to loosely retain the ferrule therein to permit independent alignment thereof by axial and transverse movement thereof with respect to said confronting surfaces engaging means, and

a plurality of integral guides forming respective paths between the fitting and each ferrule along which individual optical fibers are disposed;

a second unitary housing section having a second shape dissimilar to said first shape and integral means cooperative with said first unitary housing section for enclosing and retaining the fitting, ferrules and optical fibers with said first and second unitary housing sections fitted together; and

means for securing said first and second unitary housing sections together.

8. The connector of claim 7 wherein the securing means includes a threaded fastener.

9. The connector of claim 7 wherein said first unitary housing section includes a recess for retaining a nut;

and

wherein said first unitary housing section further includes an opening for accommodation of a machine screw cooperative with said nut;

and wherein said machine screw and said nut function as said securing means.

10. The connector of claim 7 wherein said first unitary housing section includes a peripheral portion in which said integral first receptacle portion and said at least two integral second receptacle portions are provided, and a recessed portion containing said plurality of integral guides;

and

wherein said second unitary housing section includes a peripheral portion cooperative with said peripheral portion of said first unitary housing section, and a recessed portion cooperative with said recessed portion of said first unitary housing section.