IIW
`
`(43) Date of A publication 03.02.1993
`
`» UK Patent Application « GB «2 258 350..A
`
`
`(21) Application No 9115734.7
`
`
`(71) Applicant
`Hawke Cable Glands Limited
`(Incorporated in the United Kingdom)
`
`Leighswood Road, Aldridge, Watsall, Staffordshire,
`WSS SDS,United Kingdom
`
`
`(74) Agent and/or Addressfor Service
`Audrey Knowles & Co
`624 Pershore Road, Selly Park, Birmingham,
`
`B29 7HG, United Kingdom
`
`
`(56) Documents cited
`GB 2138218A
`GB 1528347 A
`(58) Field of search
`UK CL(Edition K) H2E
`INT CL§ HO1R, HO2G
`
`(22) Dateoffiling 20.07.1991
`
`(72)
`
`Inventor
`Richard Kennelly
`
`(51)
`
`INT CLS
`H02G 3/22
`
`(52) UK CL (Edition L)
`H2E EGCA
`
`GB2104311A
`GB 1524684 A
`
`GB 2074395A
`GB 1204767 A
`
`6
`
`(54) Electric cable barrier gland
`(57) An electric cable barrier gland in which hardenable compund (16) surrounding the core (2a, 2b) of acable (1)
`extending through the glandis confined by a barrier sleeve (8) located in an entry body (6) and a seal (7) is mounted ona
`cylindrical sleeve portion (8c) of the barrier sleeve (8) between opposed shouldersof the barrier sleeve (8) and entry body
`(6) to close anyclearancefit gap therebetween. The barrier sleeveis of metal or tranparentor translucentplastics.
`FIG .1
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`At least one drawing originallyfiled was informal andthe print reproducedhereis taken fromalaterfiled formal copy.
`The claims werefiled later than thefiling date within the period prescribed by Rule 25(1) of thepater RulesutP90, PR2018-00994
`Vv.
`,
`-
`CMP Ex. 2006; Page CMP0728
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`VOSE8S¢¢dD
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0728
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0729
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` CMP Ex. 2006: Page CMP0730
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0730
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`

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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0731
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0731
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`Electric Cable Barrier Gland
`This invention concerns an electric cable barrier gland.
`This invention has particular application to cabie barrier
`glands of the type that are fitted to an electric cable to
`provide a barrier to prevent
`ingress of liquid, gas or solids
`into the interstices of the cable between the cable cores when
`the cable sheathing has been removed to enable the connection of
`the conductive elements of the cable cores to some electrical
`equipment or installation. Barrier glands of this type are
`commonly used in hazardous locations and must meet specific
`flameproof performance criteria to prevent
`the risk of explosion.
`lt is already known to provide such a cable barrier gland in
`which a hardenable compound is used to fill the interstices
`between the cable cores and this compound is confined within a
`liner, sleeve or pot
`through which the cores extend.
`Such
`barrier glands with filler compounds and sleeves or pots are
`known, and two particular arrangements are described in our GB
`Patents Nos.2104306 and 2060281.
`The manufacture of barrier glands requires accurate and
`close machining or production as there are prescribed limitations
`on any gap between unthreaded surfaces in a cable gland.
`Such
`gap is commonly referred to as the flame gap and requirements in
`cable glands are specified in British Standards No. 4683 and
`Ho. 5501 of 1971 (Parts 1 & 5) as well as in other Standards
`issued by regulatory or approval
`testing authorities.
`In our GB Patent No. 2194306 we proposed to overcome certain
`problems relating to the tolerances required by using é
`deformable sleeve or lining into which the hardenable material
`packed to provide the barrier seal around the cores.
`The
`arrangement
`is such that the deformable sleeve or lining is
`intended to expand radially on assembly and compression of the
`gland so that the sleeve or lining is forced into sealing
`engagement with the complementary unthreaded part of the glance to
`
`is
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0732
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0732
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`in use of the
`ensure that there is no flame path. However,
`compound material, this presents difficulties in the field
`because such compound is normally made up from two separate
`materials which have to be mixed together, one being a resin and
`the other being a catalyst hardener.
`The mixture is of a putty-
`like consistency but ambient temperature variations effect
`consistency and hardening or curing times, and handling of the
`matertals may be under adverse or extraordinary field conditions.
`When a deformable sleeve or lining is used in a gland and
`subject to filling with a compound, local deformation of the
`sleeve may arise presenting problems during assembly.
`In
`addition,
`the compound may be spread over the external
`face of
`the sleeve or lining during assembly and restrict adequate
`sealing engagement on completion and compression of the gland.
`It is an object of this invention to provide an improved
`electric cable barrier gland by the construction of which such
`difficulties can be alleviated in a simple and effective manner.
`According to this invention we provide an electric cable
`barrier gland for a cable having a sheath enclosing at least one
`conductor core,
`the gland comprising an entry body, a compression
`body engageable with the entry body, and a sealing member
`engageable with the compression body and through which the cable
`with the sheath extends, a substantially rigid barrier sleeve
`located in the entry body with the cable core extending
`therethrough, and a hardenable compound disposed in the barrier
`sleeve filling the sleeve and surrounding the core,
`the barrier
`sleeve mounting a seal member engaging with a bore in the entry
`body in which the barrier sleeve is located,
`the seal member
`acting between the barrier sleeve and the entry body to close any
`clearance fit gap therebetween.
`By this feature of the rigid barrier sleeve located ina
`bore in the entry body with the seal acting therebetween,
`the
`potential
`flame path provided by a clearance fit gap is closed.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0733
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0733
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`the barrier sleeve may be of
`Conveniently in known manner,
`brass or other suitable metal. However,
`the barrier sleeve may
`be of a selected plastics material providing transparent or
`translucent portion whereby a visible check on the disposition of
`the compound can be carried out either during assembly of the
`gland, or after by disassembly of the completed gland once the
`compound has hardened.
`Such visible check will
`show any
`discontinuities in the packing of the compound around the core,
`and any inconsistencies in the mixing of the compound by
`streaking or non-uniform colouration.
`The plastics material
`should be resistant to cracking or melting in the range 20°C
`to 90°C.
`In addition,
`the plastics material should not be
`readily combustible. Suitable plastics materials include
`polycarbonates.
`the barrier sleeve has a right cylindrical |
`Preferably,
`sleeve portion on which the seal
`is mounted. Conveniently, when
`the barrier sleeve is made of a plastics material,
`the
`cylindrical sleeve portion provides a transparent or translucent
`tubular wall.
`The barrier sleeve may have a shoulder leading to an annular
`flange remote from the sleeve portion with the seal mounted on
`the sleeve portion and abutting the shoulder.
`By this arrangement of the annular flange of the barrier
`sleeve,
`the seal engages both the cylindrical
`face of the sleeve
`portion and the shoulder and the bore of the entry body to ensure
`complete sealing of the barrier sleeve to the entry body when the
`gland is assembled.
`It
`is also preferred that the entry body has a through bere
`of smaller diameter than the aforesaid bore and said through bere
`receives the sleeve portion of the barrier sleeve.
`By this arrangement
`the afcresaid bore is a counterbore at
`ore end of the entry body providing an internal shoulder with a
`face for engagement by the seal so that the seal
`is trapped
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0734
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0734
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`between the flange of the barrier sleeve and the internal
`shoulder of the entry adaptor.
`Preferably,
`the seal
`is of suitable elastomeric material
`such as Neoprene, Nitrile or Silicone and which has an operating
`temperature range of from -20°C to 90°C.
`Preferably,
`the gland further comprises a hollow ferrule
`member
`through which the cable extends with the compound also
`disposed therewithin.
`The ferrule is arranged to be located relative to the
`barrier sleeve and the entry adaptor by the engagement of the
`compression body with the entry adaptor.
`One end of the ferrule is arranged to engage that face of
`the barrier sleeveflange which is opposed to the shoulder, and
`the seal
`is compressed into sealing engagement when the
`compression body is engaged with and tightened up on the entry
`adaptor.
`the gland further comprises a clamping ring
`Preferably,
`arranged to seat over a complementary shaped face on that end of
`the ferrule remote from the barrier sleeve with an armour or
`earth element of the cable sheath clamped therebetween by the
`engagement cf the compression body with the entry adaptor.
`The sealing member of the gland comprises a seal nut
`mounting a cable seal engaging the external face of the cable
`sheath with the seal nut
`in threaded engagement with the
`
`compressicn body.
`By this arrangement of the various parts of the barrier
`gland,
`the barrier sleeve and the ferrule extend co-axially and
`the core with the compound therearound are enclosed thereby so
`that on assembly of the gland with the compound mixture in place
`prior to hardening,
`the tightening of the compression body on the
`end adaptor applies pressure to the compound mixture confined
`around the core and compresses the seal on the barrier sleeve to
`close any clearance gap between the assembled non-threaded part
`of the entry adaptor,
`the barrier sleeve and ferrule.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0735
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0735
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`Other particular features of the invented barrier gland will
`be explained later herein with reference to an exemplary
`embodiment showing a simple arrangement with a cable having two
`
`conductor cores.
`As will be appreciated, cables may be of different types
`with various kinds of sheath and numbers of conductor cores and,
`in some cases with separate earthing conductors.
`Furthermore,
`dependent on the type of electrical equipment for which the
`barrier gland is to be connected and used, various designs or
`styles of entry adaptor may be required.
`This invention provides a simple construction ensuring a
`complete peripheral seal between the barrier sleeve and the
`entry adaptor to preclude the possibility of a flame gap whilst
`accommodating manufacturing or production clearance tolerances.
`An exemplary embodiment of a cable barrier gland according
`to this invention will now be described with reference to the
`accompanying drawings wherein:-
`FIGURE 1
`ts a longitudinal section through an assembled
`\made-off"' barrier gland in which the compound is in situ;
`FIGURE 2 is a section similar to that of Figure 1 with
`certain parts omitted for clarity;
`FIGURE 3
`is a cross-sectional view in the plane A-A of
`
`Figure 2;
`FIGURE 4 is an exploded sectional view of the component
`parts for the gland entry side of the gland;
`and
`FIGURE 5
`is an exploded sectional view of the component
`parts for the cable seal and compression side of the gland.
`With reference to the accompanying drawings,
`in this
`exemplary embodiment,
`the electric cable 1 comprises two
`conductor cores 2a,2b surrounded by an inner sheath 3 and,
`known manner packing or filling material would separate the
`
`in
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0736
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0736
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`An armour or earthing
`cores 2a,2b within the inner sheath 3.
`element 4 extends between the inner sheath 3 and an outer
`sheath 5.
`As will be appreciated by those familiar with this
`field,
`there are various types and sizes of cable with different
`numbers of cores, and the cable 1
`is only one type to which this
`invention has application.
`As shown tn Figure 4, on the entry side of the gland the
`component parts comprise an entry adaptor 6, a barrier seal 7, a
`barrier sleeve 8 and a ferrule 9 which are for assembly on the
`entry side of electrical equipment
`(not shown).
`On the cable
`seal and compression side,
`the component parts as shown in
`Figure 5 comprise a clamping ring 10, a compression nut 11, a
`cable seal 12 with washer 13 and a seal nut 14 in the form of an
`end cap. All of these parts are arranged and adapted to be co-
`axially assembled around the cable 1
`to provide the completed
`\made-off'' barrier gland as depicted in Figure 1 and as will be
`described later herein.
`The entry adaptor 6 has an annular body portion 6a formed
`with a flatted flange 6b for engagement by a spanner or like tool
`to rotate the adaptor.
`One end of the adaptor 6 has a
`cylindrical bore 6c and an external male thread 6d terminating in
`a shoulder 6e. This one end of the adaptor 6 is for threaded
`engagement with a complementary threaded bore or bushing (not
`shown)
`in the electrical equipment
`in known manner. The other
`end of the adaptor 6 has a coaxial counterbore 6f terminating in
`an internal shoulder 6g with this end having an external
`
`thread 6h.
`The barrier seal 7 is of annular form sized to fit on the
`barrier sleeve 8 and is of suitable elastomeric or resilient
`material such as Neoprene or Silicene.
`The outer diameter of the
`seal 7 is complementary to the counterbore 6f and in the
`assembled gland the seal 7 is arranged to seat against the
`shoulder 6g.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0737
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0737
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`the barrier sleeve 8 is made
`In this exemplary embodiment,
`of a strong plastics rigid material such as clear polycarbonate.
`The sleeve 8 may be machined from a rod of plastics material or
`it can be a moulding.
`The barrier sleeve 8 has an annular
`flange 8a extending from a shoulder 8b.
`A sleeve portion 8c of
`relatively thin wall
`thickness extends from the shoulder 8b with
`the outer diameter being a sliding fit in the bore 6c of the entry
`adaptor 6.
`The seal 7 fits over the sleeve portion 8c and in the
`assembled gland (Figure 1)
`the seal 7 is seated between the
`shoulders 6g and 8b.
`The plastics material
`is selected so that
`the thin wall of the sleeve portion 8c is transparent or
`translucent so that the user on assembly or an inspector can view
`the compound material 16 or cores 2a,2b located within the bore 8d
`of the barrier sleeve 8.
`The end of the barrier sleeve 8 opposed to the sleeve
`portion 8c is larger than the sleeve portion 8c and provides a
`cylindrical outer face 8e of diameter complementary to an inner
`bore 9a of the ferrule 9. This end of the barrier sleeve 8 has a
`frusto-conical shaped entry bore 8f tapering into the sleeve
`bore 8d.
`The ferrule 9 has a body 9b from which extends an annular
`The
`flange 9c providing opposed radial abutment faces 9d and 9e.
`ferrule 9 has a tubular portion 9f extending from the flange 9c
`and adjacent to the flange 9c there is an external annular
`recess 9h seating an O-ring seal 15.
`The outer diameter of the
`portion 9f is complementary to the bore 6f of the adaptor 6 so
`is
`that
`in the assembled gland (Figure 1)
`the tubular portion 9f
`received and engaged between one end of the adaptor 6 and one end
`of the barrier sleeve 8.
`The cylindrical bore ga of the ferrule 9 leads to a tapered
`portion 9i
`leading to a smaller cylindrical entry bore 9j
`to
`which,
`in use the cable 1
`is presented.
`The entry bore 9j
`is in
`an entry portion 9k extending from the flange 9c with the
`portion 9k having an external clamp face 91 which is of frusto~
`conical shape tapering from the flange 9c to the end face 9m of
`ferrule.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0738
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0738
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`01
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`With reference now to Figure 5,
`
`there is shown the clamping
`
`ring 10 which has a cylindrical outer face 10a and a tapering
`
`inner clamp face 10b complementary to the clamp face 91 of the
`
`ferrule 9.
`
`The clamping ring 10 has opposed abutment faces 10c
`
`05
`
`and 10d arranged for respective engagement
`
`in the assembled gland
`
`with end face 9m of the ferrule 9 and an internal shoulder 11a of
`
`the compression nut 11.
`
`The compression nut 11 has a body 11b formed with flats 11c
`for engagement by a spanner or the like. One end of the nut
`11
`
`has an internal
`thread 11d for threaded engagement with the
`thread 6h of the adaptor 6, and the other end of the nut 11 has
`
`thread 11e for engagement with the internal
`an external
`thread 14a of the end cap nut 14.
`
`The cable seal 12 with the washer 13 are arranged to be
`The
`seated in an annular recess 14b within the end cap nut 14.
`washer 13 abuts against
`the inner face l4c of an inward lip 14d
`at one end of the end cap nut 14 through which the cable 1
`is
`first entered In use during assembly of the gland.
`
`In addition to the component parts of the gland as just
`
`20
`
`described,
`
`there is the hardenable compound which is provided by
`
`two materials to be mixed together. Usually the materials are an
`epoxy resin and a hardener, and these have to be carefully mixed
`together by hand in a quantity sufficient to fill the space
`within the gland to form a barrier.
`The compound barrier 16 is
`shown in Figures 1, 2 and 3 of the drawings.
`The assembly and use of the invented barrier gland will now
`
`be describec.
`
`In order to connect
`
`the cable 1
`
`to the electrical equipment,
`
`the cable 1
`
`is laid out and allowing for the required lenaths of
`
`cores 2a,2b these are exposed cutting back the outer sheath 5,
`exposing the armour or earthing element 4 and then cutting back
`the inner sheath 3 so that it projects beyond the outer sheath 5.
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`25
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0739
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0739
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`The end cap nut 14 with seal 12 and washer 13 assembled
`therein together with the compression nut 11
`loosely threaded
`thereto are slid over the cable 1
`to fit on the outer sheath and
`clear of the inner sheath 3 and cores 2a,2b.
`The clamping
`ring 10 is located over the exposed armour or earth element 4
`which is spread outwardly and trimmed back. At this stage the
`ferrule 9 may be brought
`into place temporarily to assist in
`correctly locating and trimming the element
`Lk as spread around
`the face 91 but
`trimmed so as to clear the abutment face Se and
`not extending beyond the abutment face 10c of the clamping ring.
`The cores 2a,2b are spread apart and the mixed two fart
`compound material which has a consistency of putty or plasticine
`is applied into the crutch between the cores 2a,2b.
`The
`cores 2a,2b are then brought back towards each other and the
`compound material
`is packed carefully around the cores 2a,2b to
`avoid any voids and moulded into a sausage like shape.
`(Once this
`has been done and within the time limit before the compound
`material starts to harden,
`the barrier sleeve 8 with seal
`7 is
`presented with the entry bore 8f facing the free ends of the
`cores 2a,2b and is pushed over the cores 2a,2b with the compound
`packed therearound.
`After cleaning away any excess compound exuding onto the
`external
`face of the barrier sleeve 8 and the seal 7,
`the free
`ends of the cores 2a,2b are passed through the entry adaptor 6
`which has been screwed into the electrical equipment
`(not shown).
`The sleeve portion 8c of the barrier sleeve 8 is slid into the
`entry adaptor 6 to engage within the complementary bore &c
`thereof with the seal
`7 being between the shoulder 6g and the
`sleeve shoulder 8b.
`The end of the sleeve 8 having the entry
`bore Sf
`is pushed into engagement within the tubular portion Sf
`of the ferrule 9 with the sleeve 8 sitting within the internal
`bore 9a whilst the portion 9f is received within the internal
`bore 6f of the entry adaptor 6.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0740
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0740
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`the
`Once the parts are so loosely assembled and located,
`compression nut 11 with the clamping ring 10 is then screwed into
`engagement with the thread 6h of the entry adaptor 6.
`On initial
`tightening of the compression nut 11,
`the parts are brought
`together axially so that the flange 8a of the barrier sleeve 8
`abuts the end face of the ferrule portion 9f and the seal 7 is
`
`compressed. As the seal 7 is compressed, due to the axial forces
`applied, it is brought
`into face engagement between the
`unthreaded portions of the end adaptor and the barrier sleeve and
`completely seals these two parts together to act as a barrier
`between the two parts and closing any gap existing between the
`sleeve portion and the bore 6c of the entry adaptor.
`-
`After this Initial assembly,
`the abutment face 9d of the
`ferrule engages the end face of the entry adaptor 6 with the 0-
`ring seal 15 in sealing engagement between the ferrule 9 and the
`internal bore 6f of the entry adaptor 6.
`As
`the compression nut 11
`is tightened up the mastic
`compound material
`is subjected to pressure with a squeezing
`
`action so that it Is compressed around the cores 2a,2b.
`
`Any
`
`excess compound exudes axially to extend along the cores 2a,2b
`and cover the exposed inner sheath 3 to provide the barrier of
`compound 16 within the gland. This squeezing action and the
`exudation of the compound material
`is not visible to the
`
`assembler, and the assembled gland has to be left in this
`
`25
`
`condition for the required period specified for hardening of the
`
`compound.
`the integrity of the
`After the compound has hardened,
`barrier 16 formed around the cores 2a,2b by the compound can be
`
`30
`
`11 and
`checked or verified by unscrewing the compression nut
`pulling the assembly with the barrier sleeve 8 away from the
`entry adaptor 6. Once the barrier sleeve 8 is clear of the entry
`adaptor 6,
`the disposition and condition of the compound 16 is
`visible through the translucent sleeve portion 8c and any voids
`or discontinuities or discrepancies in the compound barrier can
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0741
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`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0741
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`-11-
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`By such visible inspection, an important safeguard
`be seen.
`check can be made avoiding destructive testing.
`Conveniently,
`the visible check can be done if required
`before the final connection to the electrical equipment. After
`such check,
`the assembly is completed by bringing the cable
`seal 12 and the seal nut 14 into threaded engagement with the
`external
`thread Ile of the compression nut 11.
`Alternatively, for on-site inspection of an installation,
`the visible check can be carried out by partial disassembly of
`the gland thereby avoiding expensive destructive checks.
`In the foregoing exemplary embodiment,
`the barrier sleeve
`is of plastics to give the visibility advantage of the transparent
`or translucent portion mentioned. However,
`this is not essential
`and the barrier sleeve may be of metal such as brass and the
`advantages in using the seal mounted on the barrier sleeve are
`obtained.
`As will be appreciated, various modifications to the
`arrangement and type of compression nut and/or cable seal member
`with end cap nut and/or armour clamping ring and/or earthing
`connection are envisaged and within the scope of this invention.
`In addition,
`the shape and axial
`length of barrier sleeve may be
`adapted to suit various types of entry adaptor.
`Furthermore,
`the 0- ring seal mounted on the ferrule and engaging the entry
`adaptor may be omitted as the primary seal
`is that mounted on the
`barrier sleeve. Other types of cable seal may be used to suit
`the kind of cable and installation requirements.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0742
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0742
`
`

`

`-12-
`
`01
`
`05
`
`10
`
`15
`
`20
`
`25
`
`30
`
`Claims:
`1.
`An electric cable barrier gland for a cable having a sheath
`enclosing at least one conductor core,
`the gland comprising an
`entry body, a compression body engageable with the entry body,
`and a sealing member engageable with the compression body and
`through which the cable with the sheath extends, a substantially
`rigid barrier sleeve located in the entry body with the cable
`core extending therethrough, and a hardenable compound disposed
`in the barrier sleeve filling the sleeve and surrounding the
`core,
`the barrier sleeve mounting a seal member engaging with a
`bore in the entry body in which the barrier sleeve is located,
`the seal member acting between the barrier sleeve and the entry
`body to close any clearance fit gap therebetween.
`2.
`A gland according to Claim 1 wherein the barrier sleeve is
`made of metal.
`3.
`A gland according to Claim 1 wherein the barrier sleeve is
`made of plastics material.
`kh,
`A gland according to Claim 3 wherein the barrier sleeve has
`a transparent or translucent portion.
`5.
`A gland according to Claim 3 or Claim 4 wherein the plastics
`material
`is resistant to cracking or melting in the range -20°C
`to 90°C and/or is fire resistant.
`6.
`A gland according to any one of Claims 3 to 5 wherein the
`plastics material is polycarbonate.
`7.
`A gland according to any one of the preceding Claims wherein
`the barrier sleeve has a right cylindrical sleeve portion on
`
`which the seal
`is mounted.
`8.
`A gland according to Claim 7 wherein the barrier sleeve has
`a shoulder leading to an annular flange remote from the sleeve
`portion with the seal mounted on the sleeve portion and abutting
`the shoulder.
`9.
`A gland according to Claim 8 wherein the entry body bore
`receives the sleeve portion of the barrier sleeve and has a
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0743
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0743
`
`

`

`-13-
`
`01
`
`05
`
`10
`
`15
`
`20
`
`25
`
`30
`
`counterbore at one end providing an internal shoulder opposite
`the barrier sleeve shoulder with the seal
`located therebetween.
`10.
`A gland according to any one of the preceding Claims wherein
`the seal
`is made of elastomeric material.
`11.
`A gland according to Claim 10 wherein the elastomeric
`material
`is selected from the group comprising neoprene, nitrile
`and silicone rubber.
`12.
`A gland according to Claim 10 or Claim 11 wherein the
`elastomeric material has an operating temperature range of
`from -20°C to 90°C.
`13.
`A gland according to any one of the preceding Claims wherein
`the gland further comprises a hollow ferrule member
`through which
`the cable extends with the compound also disposed therewi thin.
`14.
`A gland according to Claim 13 wherein the ferrule is
`arranged to be located relative to the barrier sleeve and the
`entry body by the engagement of the compression body with the
`entry body.
`15.
`A gland according to Claim 13 or Claim 14 wherein the
`ferrule Is engageable with the barrier sleeve when the
`compression body is engaged with and tightened up on the entry
`body to compress the seal.
`16.
`A gland according to any one of Claims 13 to 15 wherein the
`gland further comprises a clamping ring arranged to seat over a
`complementary shaped face on that end of the ferrule remote from
`the barrier sleeve with an armour or earth element of the cable
`sheath clamped therebetween by the engagement of the compression
`body with the entry body.
`17.
`A gland according to any one of the preceding Claims wherein
`the sealing member of the gland comprises a seal nut mounting a
`cable seal engaging the external
`face of the cable sheath with
`the seal nut
`in threaded engagement with the compression body.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0744
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0744
`
`

`

`-14-
`
`01
`
`05
`
`10
`
`An electric cable barrier gland comprising a barrier sleeve
`18.
`for containing a hardenable compound surrounding an exposed core
`of a cable extending through the gland and mounting an external
`seal between an external shoulder of the barrier sleeve and an
`internal shoulder of a gland body in which the barrier sleeve is
`located such that the seal
`is compressed into sealing engagement
`with the gland body and barrier sleeve to close any clearance fit
`gap therebetween.
`19.
`A gland according to Claim 18 wherein the barrier sleeve is
`made of substantially rigid plastics material having a
`transparent or translucent sleeve portion through which the
`hardenable compound may be inspected.
`20.
`An electric cable barrier gland for a cable substantially as
`hereinbefore described with reference to the accompanying
`
`15
`
`drawings.
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0745
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0745
`
`

`

`™~aminer's report to the Comptroller under
`section 17 (The Search Report)
`
`GB 9115734.7
`
`Relevant Technical fields
`(i) UK CI (Edition
`*
` )
`
`H2E
`
`(ii) Int Ci (Edition
`
`)
`
`5
`
`HO2G - HO1R
`
`Databases(see over)
`(i) UK Patent Office
`
`(ii)
`
`Search Examiner
`
`MRS J BANNISTER
`
`
`
`
`
`
`Date of Search
`
`29 OCTOBER 1992
`
`
`
`
`Documents considered relevant following a search in respect of claims
`AT LEAST CLAIM 1
`
`Identity of document and relevant passages
`Relevant to
`claim(s)
`
`GB 2138218 A
`(BRITISH ENGINES) see sleeve
`At least
`(60), seal
`(58)
`figure 1
`Claim 1
`
`:
`|
`
`{|
`
`Category
`(see over)
`
`x
`
`X
`
`X
`
`x
`
`x
`
`x
`
`GB 2104311
`
`(HAWKE CABLE GLANDS) see sleeve
`(20), seal
`(27)
`
`|
`!
`
`'
`|
`
`GB 2074395 A
`
`GB 1528347
`
`GB 1524684
`
`GB 1204767
`
`(BRITISH ENGINES) see sleeve
`(31), seal
`(33)
`(HAWKE CABLE GLANDS) see sleeve
`(10, 120), seal
`(52, 118)
`Figures 3,
`7
`
`(BICC) see Figures 5,
`(23)
`
`6 seal
`
`(HAWKE CABLE GLANDS) see sleeve
`(5) and seal
`(34) Figure 2,
`3
`
`At least
`Claim 1
`
`At least
`Claim 1
`At least
`Claim 1
`
`At least
`Claim 1
`
`At least
`Claim 1
`
`SF2(p)
`
`—
`
`
`Sod —docgys\Fil000526
`
`ae
`
`Lo”
`
`1
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0746
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0746
`
`

`

`é
`
`.t
`Rele
`identity of document and relevant passages
`Category
`to claim(s)
`nn
`
`
`
`Categories of documents
`X: Documentindicating lack of novelty or of
`inventive step.
`.
`.
`.
`eee
`Y: Documentindicating lack of inventive stepif
`combined with one or more other documentsof the
`same category.
`AD
`indicati
`and/orstate of the art technological background
`
`: Documentindicatin
`
`i
`
`P: Documentpublished on or after the declared
`priority date but before thefiling date of the
`resent application.
`P
`PP
`E: Patent document publishedon or after, but with
`priority date earlier than, the filing date of the
`present application.
`&: Memberof the same patentfamily,
`corresponding document.
`
`;
`
`3
`
`Databases:The UK Patent Office database comprises classified collections of GB, EP, WO and US
`patent specifications as outlined periodically in the Official Journal (Patents). The on-line databases
`considered for search are also listed periodically in the Official Journal (Patents).
`
`beo SHOR
`Published 1993 at The Patent Office, Concept House, CardiffRoad, Newport, Gwent NPQ 1RH. Further copies may
`
`Sales Branch, Unit 6, Nine Mile Point, Cwmfelinfach, Cross Keys, Newport, NP1 7HZ. Printed by MULineAGPGeyteesNdha 3848-00994
`CMP Ex. 2006; Page CMP0747
`
`Cooper v. CMP, IPR2018-00994
`CMP Ex. 2006; Page CMP0747
`
`