Granted Patent B2

US 7,400,813 · App. 11/138,063 · Granted Jul 15, 2008

Abstract

Claims (64)

1. A telecommunications assembly comprising:

a chassis and a module mounted within the chassis;

the chassis including:

a housing with a top, a bottom, and opposing sides, defining an interior space accessible through an open front, the interior space substantially closed off by a back opposite the open front;

at least one mounting location within the interior space;

at least one fiber optic adapter assembly corresponding to each of the mounting locations mounted within the interior space, each adapter assembly mounted within the chassis separately from the module, wherein the module and adapter assembly engage each other when the adapter assembly and the module are mounted within the chassis, each adapter assembly including a unitary housing with a plurality of adapters integrally formed in the unitary housing, each adapter including a front end directed toward the open front and a back end directed toward the back, and an access opening positioned between the front and back ends, each end configured to receive a fiber optic connector, the fiber optic adapter assembly including inner housing components and a ferrule alignment sleeve for each adapter, wherein the access opening is sized to permit the inner housing components and the ferrule alignment sleeve to be positioned within the adapter between the front and back ends, wherein a panel is positioned within the access opening of each adapter to hold the inner housing components and the ferrule alignment sleeve within the adapter; and,

each adapter assembly housing including a mounting portion adjacent one of the sides of the chassis, the adapter assembly removable from the interior through the open front of the chassis to permit access to the back end of the adapters of the adapter assembly, the adapter assembly positioning the adapters within the interior behind the open front; and,

the module mounted at one of the mounting locations and including a housing with a bulkhead to which is mounted a plurality of fiber optic connectors engaging the plurality of fiber optic adapters of the adapter assembly, the bulkhead of the module positioned forward of a rear most extension of the housing of the module.

2. The telecommunications assembly of claim 1 , the module further comprising:

a body defining an interior;

at least one optical component within the interior of the housing; and

a front with a cable exit.

3. The telecommunications assembly of claim 1 , wherein the adapter assembly positions the plurality of adapters forward of the back of the chassis.

4. The telecommunications assembly of claim 1 , wherein each module includes a pair of opposing mounting flanges and each mounting location includes a pair of opposing slots to receive the flanges of the modules.

5. The telecommunications assembly of claim 2 , wherein the body of the module defines a shallower depth between the bulkhead and the rear of the module and a greater depth between the bulkhead and the front of the module.

6. The telecommunications assembly of claim 1 , wherein the adapter assembly is positioned adjacent one of the sides of the chassis and the mounting portion extends along the adjacent side to the front opening, the mounting portion releasably held to the chassis by a removable fastener.

7. The telecommunications assembly of claim 6 , wherein the adapter assembly is held at the mounting location by a releasable fastener and the front of the module includes an extension which prevents access to the releasable fastener when the module is mounted at the mounting location.

8. The telecommunications assembly of claim 6 , wherein the removable fastener is a thumbscrew captively held by a forward extension of the adapter assembly and releasably received within a fastener opening of the chassis.

9. The telecommunications assembly of claim 1 , wherein the module is held at the mounting location by a releasable latch.

10. The telecommunications assembly of claim 2 , wherein the module includes a four fiber optic connectors on the bulkhead, and the adapter assembly includes four fiber optic adapters which each receive one of the fiber optic connectors.

11. The telecommunications assembly of claim 2 , wherein the module includes a pair of cable exits on the front.

12. The telecommunications assembly of claim 2 , wherein the cable exit includes a bell shaped portion to provide bend radius protection to optical fiber cables extending through the cable exit.

13. The telecommunications assembly of claim 1 , wherein one of the mounting locations of the chassis further includes a fiber optic cable extending to and received within the rear of the one of the plurality of fiber optic adapters of the adapter assembly, and removal of the adapter assembly through the front opening of the chassis allows access to the fiber optic cable received within the rear of the adapter.

14. The telecommunications assembly of claim 13 , wherein the fiber optic cable extending to the rear of the fiber optic adapter may be accessed by removing the adapter assembly through the front opening of the chassis, the fiber optic cable may be removed from the rear of the adapter and cleaned, the fiber optic cable may be replaced within the adapter and the adapter assembly repositioned within the chassis.

15. A method of mounting a module within a chassis comprising:

providing the chassis including a front opening and a module mounting location, an adapter assembly positioned within an interior of the chassis at the module mounting location and accessible through the front opening, the adapter assembly including a unitary body including a plurality of fiber optic adapters integrally formed with the unitary body with a connector of a fiber optic cable received in a rear of each adapter, each adapter including an access opening positioned between the rear and a front of the adapter, the adapter assembly including inner housing components and a ferrule alignment sleeve for each adapter, wherein the access opening is sized to permit the inner housing components and the ferrule alignment sleeve to be positioned within the adapter between the front and the rear of the adapter, wherein a panel is positioned within the access opening of each adapter to hold the inner housing components and the ferrule alignment sleeve within the adapter, and further providing a module adapted to be mounted at the mounting location, the module including a bulkhead with a plurality of fiber optic connectors;

removing the adapter assembly from the interior of the chassis through the front opening;

removing the connector of the fiber optic cable from the rear of the adapter and inspecting an endface of an optical fiber within the fiber optic cable;

replacing the connector with the fiber optic cable within the rear of the adapter;

replacing the adapter assembly within the chassis at the mounting location;

inserting the module within the chassis through the front opening at the mounting location and engaging the front of each adapter with one of the connectors of the bulkhead of the module.

16. A telecommunications module comprising:

a body defining an interior and including first and second opposing sides, a front, a rear defining a rear-most extension of the body, and a bulkhead positioned between the front and the rear;

the bulkhead positioned between the sides and adjacent one of the sides of the body and accessible from the rear of the body;

the body defining a shallower depth between the bulkhead and the rear and a greater depth between the bulkhead and the front;

a mounting flange extending beyond each side of the body;

a plurality of fiber optic connectors mounted to the bulkhead and positioned to be inserted into a mating adapter with a rearward movement of the body;

at least one cable exit positioned in the front of the body, each cable exit including a bell shaped outer extension beyond the front of the body.

17. The telecommunications module of claim 16 , further comprising a handle extending from the front of the body adjacent the at least one cable exit.

18. The telecommunications module of claim 16 , wherein the front further comprises a flange extending beyond the mounting flange on side of the body.

19. A fiber optic telecommunications chassis comprising:

a housing with a first major side, a second major side, and a pair of opposing transverse sides extending between the major sides defining an interior with a front opening and a back opposite the front opening;

a plurality of mounting locations defined for telecommunications modules inserted through the front opening with the modules generally oriented parallel to one of the transverse sides;

each mounting location including an adapter assembly positioned adjacent one of the first or second major sides, the adapter assembly removably mounted within the interior of the housing and including a unitary housing with a plurality of integrally formed fiber optic adapters, each fiber optic adapter including a front end and a rear end, the adapter assembly including an access opening positioned between the front end and the rear end, each end configured to receive a mating fiber optic connector, each telecommunications module configured to be mounted within the housing separately from the removably mounted adapter assemblies, wherein the telecommunications modules and adapter assemblies are configured to engage each other when the telecommunications modules are mounted within the chassis;

each adapter assembly orienting the at least one fiber optic adapter with a front end positioned to receive the mating fiber optic connector inserted through the front opening toward the back and generally parallel to the sides;

each adapter assembly positioned to hold the plurality of adapters within the interior of the housing at a location behind the front opening and forward of the back, so that a fiber optic cable with a mating fiber connector may be directed to and inserted within the rear end of the adapter;

the adapter assembly removable from the interior of the housing so that the rear end of the plurality of adapters may be accessed outside of the interior, the adapter assembly including inner housing components and a ferrule alignment sleeve for each fiber optic adapter, wherein the access opening is sized to permit the inner housing components and the ferrule alignment sleeve to be positioned within the fiber optic adapters between the front and rear ends, wherein a panel is positioned within the access opening to hold the inner housing components and the ferrule alignment sleeve within the fiber optic adapter.

20. The fiber optic telecommunications chassis of claim 18 , further comprising a dust plug including a handle accessible from the front opening of the chassis and dual tips for insertion into two of the integrally formed adapters of the fiber optic adapter assembly, the dust plug inserted within ends of the fiber optic adapters to seal interiors of the adapters from contaminants.

21. A telecommunications assembly comprising:

a chassis and a module mounted within the chassis;

the chassis including:

a housing with a top, a bottom, and opposing sides, defining an interior space accessible through an open front, the interior space substantially closed off by a back opposite the open front;

at least one mounting location within the interior space;

at least one fiber optic adapter assembly corresponding to each of the mounting locations mounted within the interior space, each adapter assembly including a unitary housing with a plurality of adapters integrally formed in the unitary housing, each adapter including a front end directed toward the open front and a back end directed toward the back, each end configured to receive a fiber optic connector; and,

each adapter assembly housing including a mounting portion adjacent one of the sides of the chassis, the adapter assembly removable from the interior through the open front of the chassis to permit access to the back end of the adapters of the adapter assembly, the adapter assembly positioning the adapters within the interior behind the open front; and,

the module mounted at one of the mounting locations and including a housing with a bulkhead to which is mounted a plurality of fiber optic connectors engaging the plurality of fiber optic adapters of the adapter assembly, the bulkhead of the module positioned forward of a rear most extension of the housing of the module, the module further comprising a body defining an interior, at least one optical component within the interior of the body, and a front with a cable exit, wherein the body of the module defines a shallower depth between the bulkhead and the rear of the module and a greater depth between the bulkhead and the front of the module.

22. A telecommunications assembly comprising:

a chassis and a module mounted within the chassis;

the chassis including:

a housing with a top, a bottom, and opposing sides, defining an interior space accessible through an open front, the interior space substantially closed off by a back opposite the open front;

at least one mounting location within the interior space;

at least one fiber optic adapter assembly corresponding to each of the mounting locations mounted within the interior space, each adapter assembly mounted within the chassis separately from the module, wherein the module and adapter assembly engage each other when the adapter assembly and the module are mounted within the chassis, each adapter assembly including a unitary housing with a plurality of adapters integrally formed in the unitary housing, each adapter including a front end directed toward the open front and a back end directed toward the back, each end configured to receive a fiber optic connector; and,

each adapter assembly housing including a mounting portion adjacent one of the sides of the chassis, the adapter assembly removable from the interior through the open front of the chassis to permit access to the back end of the adapters of the adapter assembly, the adapter assembly positioning the adapters within the interior behind the open front; and,

the module mounted at one of the mounting locations and including a housing with a bulkhead to which is mounted a plurality of fiber optic connectors engaging the plurality of fiber optic adapters of the adapter assembly, the module further including a body defining an interior and at least one optical component within the interior, and a front with a cable exit, the bulkhead of the module positioned forward of a rear most extension of the housing of the module, wherein the body of the module defines a shallower depth between the bulkhead and a rear of the module and a greater depth between the bulkhead and the front of the module.

Assignments (14)