Y-branch splittable connector

• US 6,619,697 B2
• Filed: 12/27/2000
• Issued: 09/16/2003
• Est. Priority Date: 12/27/2000
• Status: Expired due to Term

• Current Assignee: Nkf Kabel Bv (Prysmian SPA)
• Original Assignee: Nkf Kabel Bv (Prysmian SPA)
• Inventors: Griffioen, Willem, Greven, Willem, Lock, Pieter, Van Wingerden, Arie, Bakker, Frans Robbert, Hawkins, David F., Van ʼT Hul, Cornelis
• Primary Examiner(s): Browne, Lynne H
• Assistant Examiner(s): Hewitt, James M.
• Application Number:
  US09/750,802
• Publication Number:
  US 20020079697A1
• Time in Patent Office: 993 Days
• Field of Search: 285/126.1, 285/15, 285/131.1, 285/132.1, 285/133.11, 285/133.4
• US Class Current: 285/126.1
• CPC Class Codes: F16L 41/023 Y- pieces F16L41/025, F16L41/026, F16L41/028 take precedence
• CPC Class Codes: G02B 6/4476 with heat-shrinkable elements
• CPC Class Codes: G02B 6/52 using fluid, e.g. air
• CPC Class Codes: H02G 3/06 Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
• CPC Class Codes: Y10T 29/49716 Converting

Abstract

An existing protective duct contains a bundle of guide tubes through which fiber optic cables are run to customers at existing service locations. In order to run a cable to a new customer at a different service location, the duct is cut at a branch point and a short section of the duct is removed to expose the guide tubes. An unused guide tube is cut and serially connected to a branch guide tube leading to the new service location. The protective duct sidewall is restored at the branch point by a splittable Y-branch connector that includes complementary housing sections, an inlet opening, an outlet opening and at least one branch opening. Splittable coupling collars seal the branch connector housing sections around the respective cut end portions of the existing duct. The Y-branch connector also includes a branch stub that is sealed around the branch guide tube.

Claims

1. In a protective duct containing a bundle of guide tubes through which communication cables can be run to customers at service locations, wherein the duct has been cut at a branch point and a section of the duct has been removed to provide access to the guide tubes between first and second severed end portions of the protective duct and one of the guide tubes has been cut and serially connected to a branch guide tube allowing a communication cable to be run in the serially connected guide tubes through a protective branch duct to a customer at a service location, an improved cable branch assembly comprising a branch connector including, first and second separable housing sections closed together in an operative position on the severed end portions of the protective duct, thereby forming a duct restoration sidewall around the guide tubes, the separable housing sections when closed together in the operative position providing an inlet portion disposed in a serial union with the first duct end portion, an outlet portion disposed in a serial union with the second duct end portion and at least one branch should disposed in a serial union with the branch duct, and including first and second coupling collars sealing the serial unions between the duct end portions and the housing inlet and outlet portions, respectively, and including a third coupling collar sealing the serial union between the branch sub and the branch duct.

2. The improved cable branch assembly as set forth in claim 1, the first and second coupling collars each including separable male and female coupling components that can be separately assembled around the housing inlet and outlet portions either before or after the serial unions are established, the male and female coupling components being disposed in interlocking engagement with each other in the operative position.

3. The improved cable branch assembly as set forth in claim 1, wherein the first and second coupling collars each including a pair of male and female coupling members that are mutually engagable with each other in an interlocking union, the male and female coupling members being separable for individual placement about the severed end portions of the protective duct before or after the housing sections have been assembled and closed onto the severed end portions, and being mutually engagable in an interlocking union with each other while encircling one of the severed end portions of the protective duct, each of the first and second collars thereby forming a unitary coupling collar for engaging the assembled housing sections.

4. The improved cable branch assembly as set forth in claim 1, wherein

the first having section having a first coupling end portion, a second coupling end portion and a duct sidewall restoration portion extending there between;

the second having section having a first coupling end portion, a second coupling end portion and a duct sidewall restoration portion extending there between;

the duct sidewall restoration portions being engagable with each other in the operative position to form the duct restoration sidewall and thereby forming a restoration duet passage there between; and

the first and second coupling end portions being engagable with each other in the operative position, thereby defining first and second openings for receiving the free end portions of the existing duet in the restoration duct passage.

5. The improved cable branch assembly as set forth in claim 1, the first and second coupling collars each including means for releasably engaging the first and second housing members and clamping them together in a compressive union around the severed end portions of the protective duet when the housing sections are assembled together in the operative position.

6. The improved cable branch assembly as set forth in claim 1, wherein:

one or both of the first and second housing sections including portions forming one or more tubular branch stubs in communication with the restoration duct passage when the housing sections are assembled together in the operative position.