# US 5,700,012 A · Seal insert for cable connections > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,700,012 A - Document ID: US5700012A - Status: Granted - Kind: A - Application number: 08/726,391 - Filed: 1996-10-04 - Granted: 1997-12-23 - Earliest claimed: 1995-10-04 - Assignees: RXS Kabelgamituren GmbH - Inventors: Franz-Fr Froehlich; Wolf Kluwe; Hans-Juergen Meltsch - Web page: https://patentgrep.com/patent/US5700012A ## CPC - H02G 9/06: in underground tubes or conduits; Tubes or conduits therefor - F16L 7/02: and sealing the pipes or cables inside the other pipes, cables or sleeves - H02G 15/013: Sealing means for cable inlets (inlets for cables filled with, or surrounded by, gas or oil H02G15/32) - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL ## Abstract The invention includes a seal insert made of elastic sealing material for the sealing of cable connections. This seal insert is made of several sealing disks which are provided with concentric stampings or grooves and with a radial slit. For sealing, the cable openings of the sealing disks are fitted by removing concentric rings. For the sealing, the individual sealing disks are arranged reciprocally over one another, whereby the radial slits do not overlap and whereby the concentric grooves engage a smooth underside of an adjacent disk or a smooth surface of the connecting apparatus. A double seal is shown for the introduction of uncut cables. ## Claims ### Claim 1 A seal insert for providing a seal between a cable sleeve and cable connecting apparatus, the insert comprising: a plurality of annular, flat, two-sided sealing disks, each of said disks including a central opening for accommodating the cable, a plurality of spaced concentric grooves disposed on a first side of the disks between the opening and an outer periphery thereof, a second side of the disks having a smooth surface, the disks being stacked together so that the first side of each disk engages either a smooth side of an adjacent disk or the cable connecting apparatus, each of said disks further comprising a radially extending slit for permitting the passage of uncut cable therethrough to the central opening, the disks being stacked together so that a radially extending slit of one disk is not in alignment with a radially extending slit of an adjacent disk, and each of said disks further comprising a pair of solid radially extending segments that interrupts each of the concentric grooves, said segments being disposed on opposing sides of said slits, wherein the each of said sealing disks is connected to another of said sealing disk to form connected pairs of said sealing disks, and wherein each of said pairs of sealing disks are connected to another of said pairs of sealing disks by a film hinge to form connected pairs of said sealing disks. ### Claim 2 (depends on 1) The seal insert of claim 1 further comprising two pressure distribution elements, the disks being stacked between the pressure distribution elements, the pressure distribution elements comprising a ring structure with a central opening for accommodating the cable. ### Claim 3 (depends on 2) The seal insert of claim 2 further comprising two clamp elements, the pressure distribution elements and stacked disks being disposed between the clamp elements. ### Claim 4 (depends on 3) The seal insert of claim 3 wherein at least one pressure distribution element includes a stop for engaging the cable connecting apparatus thereby limiting the force imposed by the clamp elements. ### Claim 5 (depends on 2) The seal insert of claim 2 wherein the pressure distribution elements further comprise a radial extending slit for permitting the passage of uncut cable therethrough to the central opening. ### Claim 6 (depends on 1) The seal insert of claim 1 wherein the disks are fabricated from silicon. ### Claim 7 (depends on 1) The seal insert of claim 1 wherein the disks are fabricated from a plastic/elastic butyl mixture. ### Claim 8 (depends on 1) The seal insert of claim 1 wherein the disks are coated with a plastic sealing material. ### Claim 9 A sealable cable connection comprising: a pressure plate including at least one central opening for accommodating a cable, the pressure plate engaging a first pressure distribution ring including at least one central opening for accommodating the cable, the first pressure distribution ring being disposed between the pressure plate and a plurality of annular, flat, two-sided sealing disks, each of said disks including a central opening for accommodating the cable, a plurality of spaced concentric grooves disposed between the opening and an outer periphery of a first side of the disks, a second side of the disks having a smooth surface, the disks being stacked together so that the first side of each disk engages either a smooth side of an adjacent disk or the cable connecting apparatus, the disks being disposed between the first pressure distribution ring and a second pressure distribution ring including at least one central opening for accommodating the cable, the second pressure distribution ring being disposed between the disks and a sleeve head including at least one central opening for accommodating the cable, the pressure plate being connected to the sleeve head, the pressure plate is connected to the sleeve head with at least one threaded bolt whereby the pressure between the pressure plate and the sleeve head may be adjusted by tightening or loosening the bolt, each of said disks further comprising a radially extending slit for permitting the passage of uncut cable therethrough to the central opening, the disks being stacked together so that a radially extending slit of one disk is not in alignment with a radially extending disk of an adjacent disk, each of said disks further comprising a pair of solid radially extending segment that interrupts each of the concentric grooves, the segments of a respective disk being disposed on opposing sides of the slit of said disk, the pressure plate, first and second pressure distribution plates, disks and sleeve head including at least two central openings for accommodating two cables. ### Claim 10 (depends on 9) The sealable cable connection of claim 9 wherein the pressure distribution rings further comprise a radial extending slit for permitting the passage of uncut cable therethrough to the central opening.