Electricity: conductors and insulators – Conduits – cables or conductors – Combined
Reexamination Certificate
1998-12-02
2001-03-06
Kincaid, Kristine (Department: 2831)
Electricity: conductors and insulators
Conduits, cables or conductors
Combined
C174S092000, C174S093000, C174S07000A
Reexamination Certificate
active
06198048
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to a protection sleeve used for insulating from the environment the connected ends of cables, for example cables of a communication network.
Such sleeves are usually made of plastics material and make it possible to protect the connection from mechanical shocks and corrosion. They comprise, in manner known per se, two discs disposed respectively around the incoming cable or cables and the outgoing cable or cables and an overall cylindrical envelope positioned around said discs to hermetically close the space included between these discs, in which the connection of the cables is effected. The envelope is usually constituted either by two shells fixed on one another by their longitudinal edges, or by a longitudinally split tube.
The present invention concerns more particularly a device for mounting the incoming or outgoing cable or cables of said sleeve in the discs.
Although the discs can be formed in one piece presenting cable-passage openings through which the cables are threaded, the discs usually employed are designed in several elements in order to allow their positioning and fixation on either side of the cable or cables without cutting said cables.
DESCRIPTION OF THE RELATED ART
The known devices most often present a disc in two elements for the passage of one or two cables, the latter then being positioned in the plane of join of the two elements corresponding to a diameter of the disc. When three or four cables must be maintained, the disc is separated into three elements, for example along two planes of join parallel to a diameter.
It has been ascertained that a considerable problem raised in the implementation of the protection sleeves is that of the securing of the cables. Such securing must be such that the cables cannot be induced to slide in the discs when they are subjected to an outside traction. It is also useful to control the direction in which the cables enter in the discs and to avoid the bending or torsion of the cable at the level of its entrance in the disc.
In effect, when the cables are induced to slide with respect to the discs or no longer to be disposed correctly with respect thereto under the effect of a torsion or a bending, the tightness of their passage through the disc risks being destroyed. Moreover, upon slide of a cable, the splices for connection made on this cable may be damaged.
The arrangements proposed at the present time for effecting securing of the cables on the sleeve are not entirely satisfactory, as they avoid the slide of the cables in the discs but do not prevent a torsion or a bending from being imparted to the cable in its zone where it enters in the disc.
This is the case for example of the device proposed in U.S. Pat. No. 4,538,021 and U.S. Pat. No. 4,558,174, in which the discs present a tubular extension directed towards the interior space of the sleeve and bear stirrup elements with toothed portion which are tightened on the cable by a clamping ring.
SUMMARY OF THE INVENTION
The invention proposes to solve this problem by providing a device ensuring a good-quality securing of the cables entering and leaving the sleeve.
To that end, the invention relates to a device for mounting at least one cable in a disc, constituted by at least two elements, intended to be located in a cable connection protection sleeve, characterized in that said disc bears, on its front face intended to face towards the outside of the sleeve, at least one cable securing means fixedly held relative to the said disc by fixing means.
The device according to the invention is further noteworthy in that:
the securing means comprises a securing flange made in several parts, each securing flange part being fixed to the disc, by being moulded in one piece with an element of the disc,
the securing means comprises a securing flange enclosed in a housing formed on the front face of the disc,
when the disc is formed by two elements, each element comprises a trough borne by its front face,
when the disc is formed by three elements, the housing intended for positioning the securing means is formed by two troughs respectively on each edge element and by two troughs formed on the intermediate element,
the trough is overall parallelepipedic and presents towards the front at least one opening, each opening being aligned axially with each cable passage presented by the disc,
the housing is formed by walls moulded with the disc elements,
the discs are positioned in the envelope by the cooperation of two parallel ribs separated by a hollow in the peripheral wall of the disc with a rib formed on the inner face of the envelope, the hollow being interrupted in a zone positioned in an interruption of the rib borne by the inner face of the envelope,
the cable securing flange is constituted by two halves intended to be disposed and fixed on one another on either side of the cable or cables to be secured, each flange half presenting a central zone, of overall parallelepipedic space requirement and comprising at least one semi-cylindrical passage for the passage of the cable or cables to be secured, and two end zones traversed by openings intended for the passage of the fixing means,
the inner wall of the passage bears at least one projecting rib,
the securing means comprises stackable securing rings intended to be positioned in the securing flange,
positioning means are formed on said securing rings so as to facilitate stacking thereof and to avoid their relative slide with respect to one another,
said positioning means comprise grooves that the outer surface of the rings bears, and ribs borne by the inner surface of said rings,
said positioning means comprise a stud adapted to be positioned in an opening, the stud and the opening being disposed in the upper zone of the ring.
REFERENCES:
patent: 4002818 (1977-01-01), Knuze
patent: 4203000 (1980-05-01), Muller
patent: 4933512 (1990-06-01), Nimiya et al.
patent: 5313019 (1994-05-01), Brusselmans et al.
patent: 5792991 (1998-08-01), Nolf
Juhel Alain
Perdriau Olivier
Gilly Richard P.
Kincaid Kristine
Mayo, III William H
Pouyet S.A.
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