Method and apparatus for sealing fiber optic entryways to a sealed enclosure
First Claim
1. In an enclosure for a fiber optic cable transmission line splice connection, a wall having a first opening therein as an entryway for a cable to the interior of said enclosure, said enclosure having clamping means mounted immediately adjacent said wall for applying compression forces to substantially the whole cylindrical periphery of a cylindrical annular body of a grommet of resiliently deformable and flexible material which surrounds a cable entering said opening and for urging the grommet axially into engagement with said wall to seal the entryway into the enclosure, said clamping means comprising grommet support means having a first grommet support adjacent said opening, said grommet support having a concave cylindrically curved portion conforming to the curvature of the annular body of the grommet for receiving the grommet, and a movable clamp member having a corresponding concave cylindrically curved portion for engaging and compressing the grommet against said grommet support and axially against said wall around the periphery of said opening, said clamping means comprises means for supporting said clamp member in opposing relationship to said grommet support means, said means for supporting said clamp member comprising means supporting said clamp member for movement along an angled path toward said grommet support means and said wall to compress the grommet and means for moving said clamp member to compress the grommet and hold it in a clamped position to maintain compression on the grommet.
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0 Petitions
Accused Products
Abstract
A clamping apparatus is positioned adjacent the interior wall of a sealed compartment. The wall has an opening providing an entryway for a fiber optic cable to the interior of the compartment. The clamping apparatus applies compression forces to an annular cylindrical body of a flexibly resilient and deformable grommet supported in line with the opening to seal the opening. The grommet has a passageway for the cable. The clamping apparatus, which essentially surrounds and conforms to the annular body of the grommet, is operable to compress the grommet radially around the cable and to axially urge the end face against the wall of the opening. A clamp member having clamping surfaces for compressing two side by side grommets in line with two side by side cable openings in the wall is disclosed. A headed rod extending at an angle to the wall with the cable openings therein supports the clamp member for angled movement to effect the compressive radial and axial forces.
104 Citations
14 Claims
- 1. In an enclosure for a fiber optic cable transmission line splice connection, a wall having a first opening therein as an entryway for a cable to the interior of said enclosure, said enclosure having clamping means mounted immediately adjacent said wall for applying compression forces to substantially the whole cylindrical periphery of a cylindrical annular body of a grommet of resiliently deformable and flexible material which surrounds a cable entering said opening and for urging the grommet axially into engagement with said wall to seal the entryway into the enclosure, said clamping means comprising grommet support means having a first grommet support adjacent said opening, said grommet support having a concave cylindrically curved portion conforming to the curvature of the annular body of the grommet for receiving the grommet, and a movable clamp member having a corresponding concave cylindrically curved portion for engaging and compressing the grommet against said grommet support and axially against said wall around the periphery of said opening, said clamping means comprises means for supporting said clamp member in opposing relationship to said grommet support means, said means for supporting said clamp member comprising means supporting said clamp member for movement along an angled path toward said grommet support means and said wall to compress the grommet and means for moving said clamp member to compress the grommet and hold it in a clamped position to maintain compression on the grommet.
- 12. In a splice enclosure which has an interior compartment which is to be sealed from the exterior environment, said compartment comprising an external wall having respective opposed first and second wall sides and a cable opening extending through said wall and wall sides for passing a cable between the exterior and interior of the compartment, and a grommet supporting and confining structure for supporting an elongated resiliently deformable annular grommet having first and second terminating annular end faces, one at each end thereof, and an axial cable passageway therethrough for the cable, said supporting and confining structure comprising grommet support means supporting said grommet axially in line with the center of said opening with said second end face of the grommet displaced outwardly away from said first wall side and said first end face disposed adjacent said first wall side and the opening therethrough whereby the grommet extends axially in a direction away from said first wall side to said second end face displaced from said first wall side, said supporting and confining structure having opposed confining surfaces extending away from said first wall side and axially along the grommet, said confining surfaces being cylindrically concave surfaces extending essentially the full length of the grommet for engaging essentially the full length of the outside cylindrical surface of the grommet, and grommet compression mechanism for establishing radial compression forces in the grommet for essentially the full length of the grommet between said confining surfaces to resiliently urge the interior of the grommet against the exterior of the cable passing through the grommet to provide a seal along the cable, said compression mechanism comprising a compression member engageable with said second end face of the grommet for compressing and bodily urging the grommet axially toward said first side of said wall to effect axial components in the grommet to compress and resiliently urge said first end face of the grommet against said first wall side around the outer periphery of said cable opening to effect a sealing of said cable opening between said first wall side and the grommet.
Specification