Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for a pipe – conduit – or cable
Reexamination Certificate
1998-12-08
2001-05-15
Knight, Anthony (Department: 3626)
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for a pipe, conduit, or cable
C277S616000, C277S620000, C174S0210JR, C174S07700S, C174S093000, C033S562000
Reexamination Certificate
active
06231051
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is directed to a cable sleeve consisting of a socket pipe and at least one transversely divided seal member with adjustable cable entry openings on the end face, whereby the adjustment occurs by the removal of concentrically arranged adjusting rings.
U.S. Pat. No. 4,103,911, whose disclosure is incorporated herein by reference thereto, and German PS 24 27 677 both teach a seal member for a cable sleeve, wherein the cable entry openings are cut with the aid of special cutting or boring tools.
U.S. Pat. No. 5,199,724, whose disclosure is incorporated herein by reference thereto and which claims priority from the same German Application as European Patent Application 0 440 903, teaches an adjusting element for the occlusion of entry openings in a cable sleeve, pipe trains and similar apparatus. The diametric adjustment to the inserted objects, for example the cable, occurs in an occluding wall fashioned from concentric separable sealing rings.
U.S. Pat. No. 5,235,134, whose disclosure is incorporated herein by reference thereto, teaches a cup-shaped sleeve, wherein a seal member in which a sealing insert made of a compressible material is inserted and arranged at the entry end. This sealing insert is formed from concentric rings. The adjustment of the cable entry opening to the diameter of the cable occurs by the removal of the concentric rings. The sealing is achieved by axial compression with the aid of corresponding pressure means.
SUMMARY OF THE INVENTION
It is an object of the present invention to improve a cable sleeve of the abovementioned type, wherein, particularly, the cable entries for cut and uncut cables should be designed to be universally and individually adaptable. The stated object is inventively achieved with a cable sleeve of the above-mentioned type in which the seal member is formed from two walls residing in succession in the direction of the axis of the cable sleeve and that the walls are formed in the cable entry openings from separable, concentrically arranged adjusting rings and have a hollow space for a cable clamping arrangement or apparatus respectively arranged in the cable entry opening between the two walls. The cable clamping apparatus is to be assembled on the cables and can be lowered into the hollow space during the leading of the cable into the cable entry openings. A sealing wrapper or coil made of plastic sealing material is arranged in the regions of the walls of the cable sleeve openings on the cable to be inserted, whereby the walls of the sealing member comprise sealing slots or grooves in the parting plane.
The inventive cable sleeve consists of a socket pipe and at least one seal member for cable insertion, wherein the seal member is divided transversely and is assembled from two walls residing in succession, viewed in the axial direction. The two walls are held together at the outer perimeter with a cylindrical or oval wall, whereby a slot is fashioned in this cylindrical wall for the acceptance of a seal relative to the surrounding socket pipe. The seal members consist of two or, respectively, three seal member segments which are pressed together over the cables to be inserted by means of a preferably self-tapping screw. The sealing in the respective parting plane of the seal member and in the cable entry opening in the direction of the cable occurs with plastic sealing material in the form of a sealing wrapper. Slots are located in the parting planes of the walls of the seal member, and these slots enable a better pressing of the inserted sealing wrapper. The seal members can be equipped with a valve or with a ground bushing as needed.
The cable entry openings in the seal members are formed by the removal of concentric adjusting or adjustment rings according to the “onion ring principle”. The individual concentric adjusting rings are connected via slot-shaped steppings and are cut out in these thinned slots with the aid of pincers or pliers or by a blade. The cutting edge of the pincers or pliers is formed so that not only the smallest radius but also the largest can be cut. The excision appropriately occurs in a plurality of successive steps up to the required cutout. Since the seal member or, respectively, even the seal member segments are respectively formed from two walls with an intervening hollow space, the two walls must be cut to the corresponding diameter. A mechanical cable clamp is located in the intermediately formed hollow space. This cable clamp consists of a sheet with tears or lancings which are secured on the cable with a hose band clip or a tightening strap.
According to the diameter of the cable to be inserted, a corresponding number of adjusting rings are removed and the sealing strip coil is placed on the cable for sealing. For determining the number of adjusting rings to be removed, a template or gauge is applied in which the number of adjusting rings can be removed as well as the diameter of the sealing wrapper to be applied can be determined. This gauge or template further comprises noses which can be inserted into corresponding lateral notches of the seal member when the seal member segments are pressed at the proper interval. In this way, whether the sealing pressure, which is created by means of pressing the seal member segments together, is sufficient is directly checked.
Furthermore, a springing sealing lip is additionally located on an outer surface of the seal member or, respectively, the seal member segments. This lip, which lies adjacent the socket pipe during closing, thus forms a splash and dust protection. Four screw-on points or, respectively, noses in which securing elements can be screwed on for fixing the sleeve at a bearing rope or on a messenger cable or at a wall or at a mast are respectively formed in the seal member. In addition, receptacles for the locking of connecting bars serving to hold the seal members at a distance are also located on the seal member or seal member segments. It is also possible to add additional elements at the connecting bars, such as receptacles for splice cassettes and the like.
The longitudinal slit socket pipe of the cable sleeve has closure beads correspondingly formed along the longitudinal slit with closure elements being captively locked thereat. These can be activated by hand or with the aid of a screwdriver, whereby the span of the closure elements is designed so that the closure region with inserted seal is pressed with sufficient closing pressure. Ribs are attached at the socket pipe in the region of the closures so that the closure elements are embedded in a positive fashion and are thus secured against accidental opening due to contact or opening by hand. To provide further access protection, a corresponding cover strip can be placed over the closure elements for coverage and can be additionally screwed into the seal member.
The sealing of the seal members to the socket sleeve occurs with an elastic formed gasket which comprises a hollow section on both sides of the seal. This formed gasket can be utilized as a closure ring or in a cut condition, whereby, in the latter case, a connecting element is utilized as a joiner, for example. The connecting element is inserted in the opening at the open end of the formed gasket and telescoped therein.
The securing of the sleeve on a mast, a bearing rope or a wall occurs with a sleeve securing part, which is secured at the noses of the seal members with self-tapping screws, for example. The sleeve fixation part is designed in a universal fashion and comprises securing elements for the various types of fixation.
REFERENCES:
patent: 3692926 (1972-09-01), Smith
patent: 4103911 (1978-08-01), Giebel et al.
patent: 4424412 (1984-01-01), Goetter et al.
patent: 4538021 (1985-08-01), Williamson, Jr.
patent: 4584780 (1986-04-01), Pressey
patent: 4712800 (1987-12-01), Johnson
patent: 4733019 (1988-03-01), Pichler et al.
patent: 4839471 (1989-06-01), Clark et al.
patent: 5006669 (1991-04-01), Bachel et al.
patent: 5199724 (1993-04-01), Meltsch et al.
patent: 5231768 (199
Mueller Thorsten
Zimmer Rainer
Knight Anthony
Pickard Alison K.
RXS Kabelgarnituren GmbH
Schiff & Hardin & Waite
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