Aerial fiber optic cable case

• US 5,133,039 A
• Filed: 10/29/1990
• Issued: 07/21/1992
• Est. Priority Date: 10/29/1990
• Status: Expired due to Fees

• Current Assignee: Fitel USA Corporation
• Original Assignee: AT&T, Inc.
• Inventors: Dixit, Mayankkumar M.
• Primary Examiner(s): Sikes, William L.
• Assistant Examiner(s): Wise, Robert E.
• Application Number:
  US07/605,712
• Time in Patent Office: 631 Days
• Field of Search: 350/96.20, 350/96.21, 350/96.22
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4422 of the overhead type
• CPC Class Codes: G02B 6/4439 Auxiliary devices
• CPC Class Codes: G02B 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps

Abstract

An aerial fiber optic cable case comprises an elongated boxlike housing, openings at the ends of the housing for insertion therein from the side of an unbroken aerial fiber optic distribution cable and further insertion therein of the ends of one or more aerial fiber optic drop cables; seals for the passage of such cables through such openings, a tray reversibly mounted with the housing for supporting optical splices between one or more distribution cable fibers and one or more drop cable fibers, and a support frame including two hangers for fastening such case to hang from an aerial support strand. The container formed of the housing and lid is pivotably mounted relative to the hangers to be angularly movable relative thereto between forward and rear limit positions of angular tilt. The lid is slidable forward and back on the housing and is contained to such sliding motion until the lid reaches a rear position at which it can be pivoted to angularly move relative to the housing and to fold down to hang down from the housing in juxtaposition with its back side.

Claims

1. An aerial fiber optic cable case comprising:

a horizontal longitudinally-extending weather-resistant housing enclosing a chamber open on one side and extending between longitudinally spaced left and right hand walls of said housing, said walls having therein respective notch openings for insertion from the side of said housing into a longitudinal path through such openings and chamber of a portion of a first aerial fiber optic cable, and said housing also having therein at least one opening for entry into said chamber of a portion of at least one second aerial fiber optic cable, means to provide seals for the passages through such openings of such cable portions, a weather-resistant cover adapted to selectively uncover and cover such open side of such chamber, means for mounting in said chamber between said path and said open side a splice support tray longitudinally extending between a first end thereof and a second entrance end thereof for optical fibers which are respective to said first and second cables and are adapted to be optically coupled on such tray by splicing of such fibers, and said case further comprising a support frame coupled to said housing and extending normal to the longitudinal extent of said housing, said frame being adapted to be secured outward of said housing to an aerial strand to thereby hang said case from said strand.

2. An aerial fiber optic case according to claim 1 in which said first and second cables are, respectively, an aerial fiber optic distribution cable and an aerial fiber optic drop cable, said portion of such distribution cable is disposed between and joined to other lengths thereof, and said portion of such drop cable is an end portion thereof.

3. An aerial fiber optic case according to claim 1 in which such means for mounting said tray in said chamber is adapted to mount said tray therein with such tray'"'"'s entrance end being either towards said left hand wall or said right hand wall of said housing.

4. An aerial fiber optic case according to claim 1 in which said housing and frame are adapted for relative angular movement therebetween about a longitudinal pivot axis through said housing so as to permit angular tilting of said housing relative to said strand when said case is hung therefrom.

5. An aerial fiber optic case according to claim 4 in which said case comprises means for stopping such angular movement at a predetermined angular position existing between said housing and frame and establishing a limit for such movement at one end of a range of such movement between such housing and frame.

6. An aerial fiber optic case according to claim 5 further comprising means to stop such movement at a second predetermined angular position existing between said housing and frame and establishing a limit for such movement at the other end of said range of angular movement.

7. An aerial fiber optic case according to claim 1 in which said frame comprises a pair of hangers longitudinally straddling said housing and cover and extending normal to the longitudinal extent of said housing from respective base ends therefor longitudinally outboard of said walls of said housing to respective free ends belonging to said hangers and displaced outward of said housing and cover, said base ends of said hangers being coupled to said housing to secure said hangers thereto.

8. An aerial fiber optic case according to claim 7 in which said base ends of said hangers are coupled to said housing rearward of the inner extremities of said notch openings in said longitudinally spaced walls of said housing.

9. An aerial fiber optic case according to claim 8 in which, when said case is hung from said strand, said housing is horizontal and said hangers are vertical and said open side of said chamber is on the upper side of said housing, and in which said notch openings extend into said walls of said housing from said upper side thereof, said base ends are coupled to said housing below the bottoms of such openings, and said hangers have portions adjacent such openings which are bent to avoid blockage by such hangers of said port through such opening for such portion of such first cable.

10. An aerial fiber optic case according to claim 7 in which said hangers are metallic, and said support frame further comprises a metallic beam longitudinally extending between, and coupled to, said base ends of said two hangers.

11. An aerial fiber optic case according to claim 10 in which said beam extends beneath said housing to provide support therefor when said case is hung from said strand.

12. An aerial fiber optic case according to claim 10 in which the coupling between said beam and said hangers stiffens said hangers against longitudinal angular play thereof relative to said housing.

13. An aerial fiber optic case according to claim 10 in which said beam is fixed in position relative to said housing, and said case comprises means pivotally coupling said base ends of said hangers to longitudinally opposite end portions of said beam so as to permit relative angular movement between said hangers and housing about a longitudinal pivot axis through the latter.

14. An aerial fiber optic case according to claim 10 in which said beam is electrically coupled to said hangers, and said chamber contains conductor means for electrically connecting portions of a metallic sheath in at least one of said cables to said beam.

15. An aerial fiber optic case according to claim 1 in which said cover comprises a lid coupled to said housing to be adapted for slidable translational movement thereon over said open side of said chamber from the front to the rear thereof and conversely to thereby selectively uncover and cover said open side.

16. An aerial fiber optic case according to claim 15 in which said lid is pivotally coupled to said housing so as, upon being slid to the rear of said chamber, to be angularly movable relative to said housing to a folded down position at which said lid is juxtaposed with said housing'"'"'s rear side.

17. An aerial fiber optic case according to claim 1 in which said case further comprises means on said frame outward of said housing for facilitating fastening of said frame to said strand.

18. An aerial fiber optic case according to claim 17 in which such means on said frame comprises means for clamping said frame to said strand.

19. An aerial fiber optic case according to claim 17 in which such means on said frame is adapted to fixedly angularly position said frame and strand relative to each other.

20. An aerial fiber optic case according to claim 1 in which said case includes said tray and, also, optical connector means carried by said tray for effecting such splicing of said fibers.

21. An aerial fiber optic cable case comprising a synthetic resinous weather-resistant longitudinally-extending container having openings therein for the inserting into the interior thereof of one or more aerial fiber optic cables, a metallic support frame to connect said container to an overhead support therefor, such support frame comprising longitudinally extending metallic beam means coupled along its longitudinal extent to said synthetic resinous container to lend support to and strengthen said container, and a pair of metallic hanger means coupled to said beam means at respective longitudinally spaced locations thereon and extending from their coupling with said beam means normal to the longitudinal extent thereof and being adapted in use to extend upward thereof, and means on each such hanger means for facilitating its fastening to said support to thereby hang said case from said support so as to maintain said case above ground.

22. An aerial fiber optic cable case comprising a longitudinally extending weather-resistant container comprising a housing and a cover lid therefor, said housing having therein a chamber open on one side, and also having therein openings for insertion into said chamber of one or more aerial fiber optical cables, and said cover being adapted to selectively uncover and cover such open side of such chamber, such case further comprising means for at least partly sealing the passages through such openings of such one of more cables, means coupled to said housing for connecting it to overhead support for said container, such connecting means longitudinally straddling said container and projecting up therefrom when such means is in use, means on such connecting means outward of said housing for facilitating fastening of such connecting means to an aerial strand to thereby hang said case from said strand, and means pivotally coupling said connecting means to said housing to permit relative movement of said connecting means and container over a range of angular movement and, in consequence, angular tilting relative to said strand of said container.

23. A case according to claim 22 in which such case further comprises stop means adapted to prevent the angel of such tilting in a direction from exceeding a predetermined value to thereby set a limit to such tilting.

24. A case according to claim 22 in which said cover is slidably movable in translation relative to said housing to selectively uncover and cover said open side of said chamber.

25. An aerial fiber optic cable case comprising a weather-resistant longitudinally-extending container having openings therein for the inserting into the interior thereof of one or more aerial fiber optic cables, means to connect said container to an overhead support thereof, such connecting means being coupled to said container and extending from its coupling therewith normal to the longitudinal extent thereof and being adapted in use to extend upward thereof, means on such connecting means for facilitating its fastening to said support to thereby hang said case from said support so as to maintain said case above ground, and means coupled to and disposed outside said container to take up and store slack in one or more sheathed fiber optic cables led to said container and inserted thereinto.

26. A case according to claim 25 in which such means coupled to and disposed outside said container comprises two gathering rings each secured to said container over a minor extent of the circumference thereof and free standing from said container.

27. A fiber optic cable case comprising:

a longitudinally extending housing having a front side and rear side laterally spaced from each other and having an opening on side thereof from the interior to the exterior of said housing, means providing for insertion into the interior of said housing of one or more fiber optic cables, a lid disposed on such side and movable between front and rear positions thereof relative to said housing to selectively uncover and cover such opening therein, means to substantially constrain movement of such lid over most of its travel between said positions to a lateral translatory sliding movement of said lid relative to said housing, and means operable when said lid is at a far rear position thereof to pivotally couple said lid relative to said housing and to free said lid to move angularly relative to said housing so as to fold down to a position at which said lid is juxtaposed with said rear side of said housing.