Fiber optic connection system

• US 6,575,640 B2
• Filed: 11/05/2002
• Issued: 06/10/2003
• Est. Priority Date: 02/04/2000
• Status: Expired due to Term

• Current Assignee: Panduit Corporation
• Original Assignee: Panduit Corporation
• Inventors: Marrs, Samuel M., Connelly, John M., Radek, Jeffrey J.
• Primary Examiner(s): Robinson, Mark A.
• Assistant Examiner(s): Amari, Alessandro V.
• Application Number:
  US10/288,163
• Publication Number:
  US 20030059168A1
• Time in Patent Office: 217 Days
• Field of Search: 385/56, 385/58, 385/60, 385/62, 385/66, 385/69, 385/71, 385/72, 385/87
• US Class Current: 385/69
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3851 Ferrules having keying or coding means
• 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 6/3888 Protection from over-extension or over-compression
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on

Abstract

The present invention is a fiber optic connection system including a fiber optic plug adapted to mate and lock with a fiber optic connector. The plug includes a housing and mated insert that cooperate to position and secure the plug pre-assemblies with respect to the plug and to structurally affix the cable strengthener to the plug.

Claims

1. A fiber optic connection system comprising, in combination:

a first fiber optic cable having a first pair of optical fibers and at least a first cable strengthener;

a fiber optic plug, receiving and secured to said first fiber optic cable, including a housing, first and second plug pre-assemblies and an insert, said first and second plug pre-assemblies having front and rear assembly surfaces;

said housing having front and rear housing ends, top and bottom walls and side walls, said top, bottom and side walls defining first and second passageways extending from said front housing end in a substantially side-by-side relationship;

said first and second plug pre-assemblies sliding in said first and second passageways, respectively, and extending beyond said front housing end in an assembled plug state;

said insert at least partially encompassing said optical fibers and being snap-locked to said housing through said rear housing end; and

a fiber optic connector to receive said fiber optic plug in an interlocked state, said fiber optic plug snap-locking to said fiber optic connector;

said housing and said insert cooperatively defining interconnection means for positioning and securing said first and second plug pre-assemblies with respect to said fiber optic plug and for structurally affixing said first cable strengthener to said fiber optic plug,

said interconnection means includes first and second flanges within said first and second passageways to engage said front assembly surface of said first and second plug pre-assemblies in said assembled plug state, respectively, said insert engaging said rear assembly surface of said first and second plug pre-assemblies in said assembled plug state, thereby securing said first and second plug pre-assemblies with respect to said fiber optic plug.

2. A fiber optic connection system comprising, in combination:

a first fiber optic cable having a first pair of optical fibers and at least a first cable strengthener;

a fiber optic plug, receiving and secured to said first fiber optic cable, including a housing, first and second plug pre-assemblies and an insert, said first and second plug pre-assemblies having front and rear assembly surfaces;

said housing having front and rear housing ends, top and bottom walls and substantially arcuate side walls, said top, bottom and arcuate side walls defining first and second substantially C-shaped passageways extending from said front housing end in a substantially side-by-side relationship;

said first and second plug pre-assemblies sliding in said first and second passageways, respectively, and extending beyond said front housing end in an assembled plug state;

said insert at least partially encompassing said optical fibers and being snap-locked to said housing through said rear housing end; and

a fiber optic connector to receive said fiber optic plug in an interlocked state, said fiber optic plug snap-locking to said fiber optic connector;

said housing and said insert cooperatively defining interconnection means for positioning and securing said first and second plug pre-assemblies with respect to said fiber optic plug and for structurally affixing said first cable strengthener to said fiber optic plug.

3. A fiber optic connection system comprising, in combination:

a first fiber optic cable having a first pair of optical fibers and at least a first cable strengthener;

a fiber optic plug, receiving and secured to said first fiber optic cable, including a housing, first and second plug pre-assemblies and an insert, said first and second plug pre-assemblies having front and rear assembly surfaces;

said housing having front and rear housing ends, top and bottom walls and side walls, said top, bottom and side walls defining first and second passageways extending from said front housing end in a substantially side-by-side relationship,

said housing having a dividing wall extending vertically from said top wall to said bottom wall;

said first and second plug pre-assemblies sliding in said first and second passageways, respectively, and extending beyond said front housing end in an assembled plug state;

said insert at least partially encompassing said optical fibers and being snap-locked to said housing through said rear housing end; and

a fiber optic connector to receive said fiber optic plug in an interlocked state, said fiber optic plug snap-locking to said fiber optic connector;

said housing and said insert cooperatively defining interconnection means for positioning and securing said first and second plug pre-assemblies with respect to said fiber optic plug and for structurally affixing said first cable strengthener to said fiber optic plug.

4. The fiber optic connection system of claim 3 wherein the dividing wall includes an upper portion adjacent said top wall, said upper portion extends from said front housing end to said rear housing end.

5. The fiber optic connection system of claim 4 wherein said insert includes an open channel to receive said upper portion of said dividing wall.

6. A fiber optic connection system comprising, in combination:

a first fiber optic cable having a first pair of optical fibers and at least a first cable strengthener;

a fiber optic plug, receiving and secured to said first fiber optic cable, including a housing, first and second plug pre-assemblies and an insert, said first and second plug pre-assemblies having front and rear assembly surfaces;

said housing having front and rear housing ends, top and bottom walls and side walls, said top, bottom and side walls defining first and second passageways extending from said front housing end in a substantially side-by-side relationship,

said top wall defining a pair of opposed snap openings near said rear housing end, and said bottom wall defining a central snap opening;

said first and second plug pre-assemblies sliding in said first and second passageways, respectively, and extending beyond said front housing end in an assembled plug state;

said insert at least partially encompassing said optical fibers and being snap-locked to said housing through said rear housing end; and

a fiber optic connector to receive said fiber optic plug in an interlocked state, said fiber optic plug snap-locking to said fiber optic connector;

said housing and said insert cooperatively defining interconnection means for positioning and securing said first and second plug pre-assemblies with respect to said fiber optic plug and for structurally affixing said first cable strengthener to said fiber optic plug.

7. The fiber optic connection system of claim 6 wherein said insert includes first and second, opposed upper snap projections and a lower snap projection, said upper snap projections and said lower snap projection engage and lock into the pair of opposed snap openings and the central snap opening, respectively.

8. A fiber optic connection system comprising, in combination:

a first fiber optic cable having a first pair of optical fibers and at least a first cable strengthener;

a fiber optic plug, receiving and secured to said first fiber optic cable, including a housing, first and second plug pre-assemblies and an insert, said first and second plug pre-assemblies having front and rear assembly surfaces;

said housing having front and rear housing ends, top and bottom walls and side walls, said top, bottom and side walls defining first and second passageways extending from said front housing end in a substantially side-by-side relationship;

said first and second plug pre-assemblies sliding in said first and second passageways, respectively, and extending beyond said front housing end in an assembled plug state;

said insert at least partially encompassing said optical fibers and being snap-locked to said housing through said rear housing end,

said insert having a rearwardly extending, substantially cylindrical boss substantially interposed first and second insert passageways to define two, substantially opposed fiber slots extending therethrough; and

a fiber optic connector to receive said fiber optic plug in an interlocked state, said fiber optic plug snap-locking to said fiber optic connector;

said housing and said insert cooperatively defining interconnection means for positioning and securing said first and second plug pre-assemblies with respect to said fiber optic plug and for structurally affixing said first cable strengthener to said fiber optic plug.

9. A fiber optic connection system comprising, in combination:

a first fiber optic cable having a first pair of optical fibers and at least a first cable strengthener;

a fiber optic plug, receiving and secured to said first fiber optic cable, including a housing, first and second plug pre-assemblies and an insert, said first and second plug pre-assemblies having front and rear assembly surfaces;

said housing having front and rear housing ends, top and bottom walls and side walls, said top, bottom and side walls defining first and second passageways extending from said front housing end in a substantially side-by-side relationship;

said first and second plug pre-assemblies sliding in said first and second passageways, respectively, and extending beyond said front housing end in an assembled plug state;

said insert at least partially encompassing said optical fibers and being snap-locked to said housing through said rear housing end; and

a fiber optic connector to receive said fiber optic plug in an interlocked state, said fiber optic plug snap-locking to said fiber optic connector,

said fiber optic connector having first and second side offsets extending rearwardly from a front connector end to provide first and second connector stabilizing surfaces, respectively;

said housing and said insert cooperatively defining interconnection means for positioning and securing said first and second plug pre-assemblies with respect to said fiber optic plug and for structurally affixing said first cable strengthener to said fiber optic plug.