US 8,872,027 B2
`(10) Patent No:
`a2) United States Patent
`Proud
`(45) Date of Patent:
`Oct. 28, 2014
`
`
`US008872027B2
`
`
`
`54) FILLER ASSEMBLY FOR CABLE GLAND
`
`75)
`
`Inventor: Samuel Liam Proud, Tyne & Wear
`(GB)
`(GB) Products Limited, Cramlington
`
`73) Assignee:
`
`*) Notice:
`
`Subject to any disclaimer, the term ofthis
`patent is extended or adjusted under 35
`US.C. 154(b) by 0 days.
`
`21) Appl. No.:
`
`13/391,539
`
`22) PCT Filed:
`
`Jun. 14, 2010
`
`PCT/GB2010/050989
`
`86) PCT No::
`§ 371 (\(1)
`(2), (4) Date: May 2, 2012
`
`87)
`(87)
`
`(65)
`
`(30)
`
`PCT Pub. No.: WO2011/021016
`
`PCT Pub. Date: Feb. 24, 2011
`
`Prior Publication Data
`|
`US 201210205023 Al
`Aug. 16, 2012
`Foreign Application Priority Data
`
`Aug. 21,2009
`Aug. 21,2009
`Mar. 15,2010
`Jun. 7, 2010
`
`(BP) vecscccssssssecsssessesnsssesee 09168429
`
`(EP).......
`... 09168430
`(GB)......
`... 1004216.6
`(GB) we ceneeeceeenesees 1009450.6
`
`51)
`(31)
`
`2006.01
`)
`(
`(2006.01)
`(2006.01)
`(2006.01)
`
`Int. Cl.
`H02G 3/02
`HO2G 15/04
`HO2G 15/013
`HO2G 3/06
`(52) US. Cl
`a
`;
`CPE soeensen H02G 15/013 (2013.01): H02G 3/06°l
`(2013.01); H02@ 13/046 (2013.01); H02G
`3/0675 (2013.01)
`USPC. ou. 174/76, 174/667; 174/77 R; 174/653;
`222/1; 222/92; 222/145.1
`
`(58) Field of Classification Search
`USPC. ou... 222/92, 94, 95, 103, 107, 145.1, 145.5,
`222/145.6, 1; 439/271-277, 586, 589, 604
`See applicationfile for complete search history.
`References Cited
`
`(56)
`
`U.S. PATENT DOCUMENTS
`
`2,530,381 A * 11/1950 Donohue, It. sss sen 174/18
`2,590,160 A *
`3/1952 Dixon woes 174/76
`(Continued)
`
`FOREIGN PATENT DOCUMENTS
`
`CA
`CA
`
`1/1991
`1279707 C
`—L/L994
`1333192 C
`(Continued)
`OTHER PUBLICATIONS
`
`International Search Report and Written Opinion underdate of Sep.
`16, 2010 in connection with PCT/GB2010/050989.
`
`(Continued)
`
`Primary Examiner — Paul R Durand
`AssistantExaminer — Randall Gruby
`(74) Attorney, Agent, or Firm — Quarles & Brady LLP
`
`ABSTRACT
`57)
`A dispenser apparatus (2) for a curable liquid material is
`disclosed. The apparatus comprisesa flexible bag (8) defining
`a first compartment (10) for accommodating a first compo-
`nent of a curable liquid material, and a second compartment
`12) for accommodating a second componentof the curable
`g
`p
`liquid material and adapted to communicate with thefirst
`chamberto enable mixing ofthefirst and second components
`to initiate curing ofthe curable liquid material. Afirst clamp
`(14) temporarily prevents mixingofthefirst and second com-
`ponents, and an elongate nozzle (16) communicates with the
`second compartment to dispense the mixed curable liquid
`material therefrom. A second clamp (18) temporarily pre-
`vents passageof the curable liquid material from the second
`compartment to the nozzle.
`
`19 Claims, 2 Drawing Sheets
`
`
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0001
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0001
`
`

`

`2,913,260
`2,957,038
`3,567,843
`3,617,614
`4,015,329
`4,332,975
`4,379,204
`4,493,522
`4,549,037
`4,608,454
`4,692,563
`4,751,350
`5,113,037
`5,208,427
`5,310,963
`5,321,205
`5,600,094
`5,621,191
`5,691,505
`6,242,700
`6,259,029
`6,812,406
`7,507,105
`7,736,165
`8,170,390
`8,288,667
`8,367,944
`8,490,513
`8,581,120
`2002/0066518
`2003/0226680
`2004/0069522
`2008/0262408
`2010/0003001
`2010/0108020
`201 1/0033165
`2012/0097445
`
`
`
`A * 11/1959 Givens vec 285/151.1
`A * 10/1960 Greenidge etal.
`.......... 174/23 R
`A *
`3/1971 Collins et al. woe 174/51
`A * 11/1971 Henry .........
`. LIATTR
`A *
`4/1977 Hutchison
`vee 29/858
`A *
`6/1982 Dienes........
`. 174/76
`A *
`4/1983 Perrault et al.
`.. 174/653
`A *
`1/1985 Law wo.
`439/271
`A * 10/1985 Bawaetal.
`we 174/667
`A *
`8/1986 Lackinger...
`. 174/653
`A *
`9/1987 Lackinger...
`174/654
`A *
`6/1988 Eaton ......
`. 174/87
`A *
`5/1992 Kingetal.
`. 174/87
`A *
`$/1993 Couto etal.
`. 174/653
`A *
`5/1994 Kennelly oe 174/667
`A *
`6/1994 Bawaetal. oc 174/655
`ww 174/653
`A *
`2/1997 McCabe.....
`
`A *
`4/1997 Norris etal.
`174/653
`11/1997 Notris wiccccce eee 174/51
`A *
`6/2001 Smith oo. 174/77R
`B1L*
`7/2001 Hand...
`. LAITAR
`B1*
`
`11/2004 Hand......
`.. 174/667
`B2*
`3/2009 Petersetal.
`.. 439/374
`B1*
`
`6/2010 Bukovnik etal.
`.. 439/276
`B2*
`
`w 385/134
`B2*
`5/2012 Hand......
`.. 174/652
`B2*
`10/2012 Chiou
`B2*
`2/2013. Chiou
`. 174/520
`B2*
`7/2013. Chiou
`.. 74/5024
`B2*
`11/2013) Winship 0... 174/667
`6/2002 Bukovniketal.
`Al
`
`Al*
`12/2003
`Jackson.
`......
`4/2004 Jackson ou...
`Al*
`0/2008 Kraussetal.
`Al
`
`1/2010 Hand wee 385/138
`AL*
`Al*
`5/2010 Miretti
`.
`123/198 D
`
`2/2011 Guest wcrc 385/138
`AL*®
`AL*
`4/2012 Gadda ooo 174/84R
`
`
`
`..
`
`
`
`174/65 SS
`174/65 SS
`
`US 8,872,027 B2
`Page 2
`
`(56)
`
`References Cited
`
`US. PATENT DOCUMENTS
`
`6/2012 Duvaletal. wo... 439/272
`2012/0142207 Al*
`2012/0292100 Al* 11/2012 Thomas.......
`. 174/652
`
`2013/0059469 Al*
`3/2013 Kawakitaetal.
`.. 439/589
`. LATTR
`2013/0112475 Al*
`5/2013 Magnoetal.
`
`174/77 RK
`2013/0118803 Al*
`5/2013. Magno, Jr.
`...
`
`2013/0129289 Al*
`5/2013 Roland........
`385/102
`
`....
`.. 439/279
`2014/0030903 Al*
`1/2014 Magno etal.
`2/2014 Schlachter et al.
`......... 174/77 R
`2014/0041939 Al*
`
`FOREIGN PATENT DOCUMENTS
`
`DE
`DE
`EP
`EP
`GB
`GB
`GB
`KR
`WO
`WO
`WO
`WO
`
`20 2005 000854 UL
`20 2005 004135 Ul
`0 434 105 Al
`1958608 Al
`765 082 A
`1335047
`2 074 395 A
`2001 0109284 A
`0204843 A2
`2004047248 Al
`2007073526 A2
`WO 2008029165 A2 *
`
`6/2005
`6/2005
`6/1991
`8/2008
`1/1957
`10/1973
`10/1981
`12/2001
`1/2002
`6/2004
`6/2007
`3/2008 ow. H02G 15/04
`
`OTHER PUBLICATIONS
`
`European Patent Office; European Search Report; Appin. No. EP
`09168429.0; dated Jan. 28, 2010.
`European Patent Office; European Search Report; Appin. No. EP
`09168430.8; dated Feb. 9, 2010.
`United Kingdom Intellectual Property Office; Examination Report;
`Appln. No. GB1202969.0; dated May8, 2013.
`CMPProducts, Catalog p. 59, Sep. 2007, Newcastle Upon Tyne,
`England.
`Instruction for Unilet Sealing Fittings
`EGS Electrical Group,
`Approved. For Use With: Appleton Kwiko® A And Crouse-Hinds
`Chico® A Sealing Cement, dated Jul. 1, 2009, 4 pages.
`
`* cited by examiner
`
`Cooper v
`CMP Ex
`
`CMP; IPR2018-00994
`2001; page CMP0002
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0002
`
`

`

`U.S. Patent
`
`Oct. 28, 2014
`
`Sheet 1 of 2
`
`US 8,872,027 B2
`
`
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0003
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0003
`
`

`

`U.S. Patent
`
`Oct. 28, 2014
`
`Sheet 2 of 2
`
`US 8,872,027 B2
`
`40
`
`38
`36
`
`24
`
`26
`
`34
`
`32
`
`30
`
`FIG.
`
`3
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0004
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0004
`
`

`

`This application claims priority to PCT International
`Application No. PCT/GB2010/050989 filed on Jun. 14, 2010,
`which claimspriority to European Patent Application No.
`09168430.8 filed on Aug, 21, 2009, European Patent Appli-
`cation No. 09168429.0 filed on Aug. 21, 2009, Great Britain
`Patent Application 1004216.6 filed on Mar. 15, 2010 and
`Great Britain Patent Application 1009450.6 filed on Jun.7,
`2010,all of whichare fully incorporated by reference herein.
`The present inventionrelates to a filler assemblyfor cable
`glands and relates particularly, but not exclusively, to such a
`filler assemblyfor filling cable glands for use in hazardous
`areas.
`
`2
`communicate with at least one said first chamber to enable
`mixing ofsaid first and second componentsto initiate curing
`of said curable liquid material;
`first barrier means for temporarily preventing mixing of
`said first and second components;
`elongate dispenser means adapted to communicate with at
`least one said second chamber and to dispense said mixed
`curable liquid material therefrom between a plurality ofcores
`of at least one cable; and
`second barrier means for temporarily preventing passage
`of said curable liquid material from the or each said second
`chamberto said dispenser means; and
`(b) at least one barrier member for restricting the extent of
`penetration of said curable liquid material along said cores.
`By providing elongate dispenser means to dispense mixed
`curable liquid material and second barrier meansfor tempo-
`rarily preventing passage ofthe curable liquid materialto said
`dispenser means,this provides the advantagethatthefirst and
`Many cable glands for use in connecting a cable to an
`enclosure in hazardousareas need to be filled with a com-
`second components of the curable liquid material can be
`20
`
`pound whichprovidesabarrier against the effects ofan explo- mixed in a sealed container comprising the first and second
`sion occurring within the enclosure to which the cable gland
`compartments, thus enabling the user to avoid coming into
`is attached. The barrier is typically formed from a two-part
`contact with harmful components of the curable liquid mate-
`clay-filled epoxy compound. The two componentparts of the
`rial. As a result of the provision of elongate dispenser means,
`compoundneed to be thoroughly mixed with each otherprior
`dispensing of the curable liquid can be more carefully con-
`o fitting into the gland, and the resulting putty like material
`trolled, as a result of which less viscous and faster curing
`needs to be packed betweenthe individual conductorsin the
`liquid material can be used than in thepriorart. This therefore
`cable. Such an arrangementis disclosed in GB 2258350.
`provides the advantage of enabling morerapid formation of a
`This known arrangement suffers from a numberof draw-
`filled cable gland incorporating the material, while also
`backs. Firstly, the cure time of the putty like material is
`allowing the liquid material to be introduced into the cable
`chosento be relatively long, in order to enableit to be manipu-
`gland in such a way that the air is expelled from the cable
`lated into the spaces between the individual conductors
`gland to avoid air voids, which could lead to failure of the
`before curing becomes advanced. Asa result, the filled cable
`cable glandin the event of an explosion. In addition, with the
`assembly must be left undisturbed for a significant period,
`present invention, the curable material can be dispensed into
`usually several hours, especially if mixed at low tempera-
`the assembled gland,i.e. the cable gland canbefilled with the
`tures. Also, the componentsofthe filler material sometimes
`conductors of the cable in a connected state, as a result of
`contain hazardous materials which become harmless when
`which the electrical integrity of the joint can be ensured,
`hefiller material is mixed. Persons mixing the components of
`whereas the putty like compound of the known arrangement
`must be moulded aroundthe conductors ofthe cable with the
`he putty like filler material may come into contact with these
`hazardous materials during mixing, and air can become
`gland disassembled,as a result of which the cable cores can
`rapped within the cable gland by the filler material which
`not beelectrically connected. The provision of at least one
`may causethe barrier formedbythefiller materialto fail in the
`barrier memberforrestricting the extent ofpenetration of said
`event of an explosion.Filling of the cable glandis also rela-
`curable liquid material along the cable cores provides the
`ively difficult, especially in the case of small cable glands.
`advantage ofenabling highly flowable curable liquid material
`GB 765082 discloses an arrangement for insulating a
`to be used, while also enablingfilling of the cable gland.
`splice between two stranded connectors in which resinous
`The body maybeflexible.
`material is introduced from a capsule having an elongate tip.
`This provides the advantage ofmaking the apparatus easier
`However, this arrangementsuffers from the drawback thatit
`and less expensive to manufacture.
`is not suitable forfilling cable glands, since the introduction
`Thefirst and/or second barrier means may compriseat least
`of a material whichis sufficiently fluid to penetrate between
`onereleasable clamp.
`the individual conductors of a cable would cause material to
`The assembly may further comprise a first component of a
`flow along the conductors along the interior of the cable,
`curable liquid material in at least one said first chamber, and
`which would prevent the cable gland from being sufficiently
`a second component ofsaid curable liquid materialin at least
`one said second chamber.
`filled to expelall of the air from the cable glandto avoid air
`voids.
`The curable liquid material may be adapted to change
`Preferred embodiments of the present invention seek to
`colour as a result of curing thereof.
`overcomeoneor moreofthe abovedisadvantages ofthe prior
`This provides the advantageofprovidinga visual indicator
`art.
`to the user when the cable glandfilling process is complete.
`According to an aspectof the present invention, there is
`The assembly mayfurther comprise a cover member for
`
`providedafiller assembly forfilling a cable gland, having a covering an external screw thread of a cable gland to prevent
`60
`plurality ofcores ofat least one cable extending therethrough,
`said curable liquid material coming into contact with said
`screw thread.
`with curable liquid material, the assembly comprising:
`(a) a dispenser apparatus for a curable liquid material, the
`The cover member may be adapted to prevent curable
`apparatus comprising:
`liquid material from penetrating an end face of the cable
`a body adapted to define at least one first chamber for
`gland.
`accommodating a first componentofa curable liquid material
`At least one said barrier member may comprise a respec-
`and at least one second chamberfor accommodating a second
`tive flexible member having at least one aperture there-
`component of said curable liquid material and adapted to
`through for engaging at least one core ofat least one cable.
`
`
`
`10
`
`15
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`65
`
`US8,872,027 B2
`
`1
`FILLER ASSEMBLY FOR CABLE GLAND
`
`CROSS-REFERENCE TO RELATED
`APPLICATIONS
`
`
`
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0005
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0005
`
`

`

`US8,872,027 B2
`
`3
`At least one said barrier member may have a respective
`tapering portion.
`According to another aspect of the present invention, there
`is provided a method offilling a cable gland with curable
`liquid material by means of an assembly according to any one
`of the preceding claims, the method comprising:
`locating at least one said barrier memberin the cablegland;
`and
`
`locating an outlet of said dispenser means in said cable
`gland and dispensing curable liquid material therefrom so as
`to expelair from the cable gland.
`The step of locating at least one said barrier memberin the
`cable gland may comprise locating at least one said barrier
`memberaround atleast one said core ofat least one said cable.
`
`A preferred embodiment of the invention will now be
`described, by way of example only andnotin anylimitative
`sense, with reference to the accompanying drawings in
`which:
`
`FIG. 1 is a perspective view of a dispensing apparatus
`embodying the present invention;
`FIG.2 is a partially cut away perspective viewof a cable
`gland havinga filler formed using the apparatus of FIG. 1; and
`FIG.3 is across sectional view ofthe filled cable gland of
`FIG.2 with a thread protector in place.
`Referring to FIG. 1, a dispenser apparatus 2 embodying the
`present invention andforusein filling a cable gland 4 (FIG. 2)
`with curable liquid material 6 comprises a body of suitable
`transparentflexible plastics material defining a flexible bag 8
`having a first compartment 10 for accommodating a first
`component ofa liquid curable material 6, and a second com-
`partment 12 for accommodating a second componentofthe
`material 6. A first clamp 14 temporarily separates the first
`compartment 10 and second compartment 12 to therebypre-
`vent mixing ofthe first and second components of the mate-
`rial 6. Thefirst and second componentsare coloured differ-
`ently (for example blue and yellow) so that thorough mixing
`of thefirst and second components produces a green liquid,
`hereby providing a visual indication when thorough mixing
`of the first and second components has occurred. Mixing of
`he first and second components togethercauses gelling ofthe
`material and initiates curing of the curable liquid material 6.
`The dispenser apparatus 2 is also provided with an elongate
`hollow nozzle 16 extending from the second compartment 12
`suchthat dispensing of the mixed curable liquid material can
`be carefully controlled. In particular, the nozzle 16 can be
`inserted a considerable distance into the cable gland 4 and
`between individual core conductors 20 of the core ofa cable
`22 attached to the cable gland 4 (FIG. 2) so that the liquid
`material 6 can be highly flowable and fast-curing, as a result
`ofwhich the cable gland 4 can be rapidlyfilled and air entrap-
`mentby the liquid material 6 minimised. A second clamp 18
`emporarily prevents material flowing from the second com-
`partment 12 into the nozzle 16, so that dispensing of the
`material 6 can be prevented until thorough mixing together of
`he first and second components has occurred.
`The flexible bag 8 is formed from two sheets of material
`welded togetheralongall but one of their edges to form a bag
`having an open mouth, whichis then mounted to the nozzle
`16. The second clamp 18 is then mounted to the bag adjacent
`o the nozzle 16, and the second componentofthe material 6
`is dispensed into the second compartment12. The first clamp
`14 is then mountedto the bag to seal the second componentin
`he second compartment 12, andthe first componentis then
`dispensedinto the first compartment 10. The open edge ofthe
`bag is then sealed to seal the first component in the first
`compartment 10.
`
`
`
`25
`
`40
`
`45
`
`4
`Referring to FIGS. 2 and3, the cable gland 4 to befilled by
`means of the dispenser apparatus 2 of FIG. 1 comprises a
`threaded outer connector 24 for threaded connection to an
`enclosure (not shown) and a compound tube 26 rotatably
`mounted within the outer connector 24. A cable connector 28
`is mounted to the end of the cable 22 and is connectedto the
`outer connector 24 by means of cooperating screw threads
`(not shown).
`Aring 30 abuts the cable connector 28 anda flexible seal 32
`is located around the core conductors 20 of the cable 22 and
`compressed between the compound tube 26andring 30 for
`limiting the extent ofpenetration ofcurable material 6 into the
`cable gland 4 before curing of the curable material 6. The
`flexible seal 32 comprises a generally frusto-conical bodyof
`elastomeric material having an aperture (not shown) there-
`through for engaging the core conductors 20 of the cable 22.
`Theaperturein the seal 32 is sized suchthatit stretches to pass
`around the core conductors 20 to tightly engage the core
`conductors 20 to form a reasonablyeffective barrier to pas-
`sage of the material 6 along the space defined between the
`core conductors 20 and the compoundtube 26.
`Referring to FIG. 3, a thread protector 34 formedof elas-
`tomeric material such as rubber is located over the external
`screw thread of the outer connector 24 of the cable gland 4
`priorto filling of the cable gland with curable material 6. The
`thread protector 34 has a hollow rim 36 for catching excess
`curable material 6 which mayflow out of end 40 of the cable
`gland 4 duringthefilling procedure, and an inner circular rim
`38 which prevents penetration of curable material 6 into the
`gap between the outer connector 24 and the compound tube
`26. This ensures that the compound tube 26 complete with
`cable connectors 20 can be removed from the outer connector
`24 after curing of the material 6.
`Theprocessoffilling the cable gland 4 of FIGS. 2 and3 by
`meansof the dispenser apparatus 2 of FIG. 1 will now be
`described.
`Tn order to fill the core of the cable gland 4 with curable
`material, the flexible seal 32 initially placed over the core
`conductors 20 of the cable 22 so that the seal 32 tightly grips
`the core conductors 20. The outer connector 24 with com-
`pound tube 26 are then mounted to the ring 30 and cable
`connector 28 to compressthe seal 32 between the ring 30 and
`compound tube 26. Asa result, the flexible seal 32 acts as a
`barrier to penetration of the curable liquid material 6 into the
`interior ofthe cable gland 4.
`The first clamp 14 is then removed from the dispenser
`apparatus 2 and the second clamp 18 left in place, to enable
`thorough mixing of the first and second components of the
`curable liquid material 6. The first and second components
`are coloured blue and yellow respectively, a result of which
`the curable liquid material 6 is bright green when it is thor-
`oughly mixed. The second clamp 18 is then removed, and the
`outlet of the nozzle 16 is placedat a location near the seal 32.
`The liquid material 6 is then dispensed through the nozzle 16
`into the space between the core conductors 20of the cable 22
`and into the space around the core conductors 20 inside the
`compoundtube 26 of the cable gland 4, where its movement
`along the axis of the cable gland4 is restricted by the flexible
`seal 32. The location of the outlet of the nozzle 16 near the
`seal 32 causesair to be expelled from the cable gland when the
`curable liquid material6 is dispensed from the nozzle 16. The
`seal 32 provides a sufficient barrier to penetration of the
`material 6 to hold back the curable material until it begins to
`gel and support itself. At the same time, the thread protector
`34 protects the externalthread ofthe outer connector 24 from
`excess curable material and prevents penetration ofthe liquid
`curable material between the outer connector 24 and the
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0006
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0006
`
`

`

`US8,872,027 B2
`
`5
`compound tube 26. The material 6 is arranged to change
`colour to dark green whenit is cured, so that a visual indica-
`tion is provided when the curing process is completed.
`It will be appreciated by persons skilled in the art that the
`above embodiment has been described by way of example
`only, and not in any limitative sense, and that variousalter-
`ations and modifications are possible without departure from
`the scopeofthe inventionas defined bythe appended claims.
`
`The invention claimedis:
`
`6
`11. Anassembly according to claim 10, wherein the planar
`portion extends inwardly from an outer portion ofthe flexible
`barrier memberthat is sealed to the gland.
`12. Anassembly accordingto claim 1, whereintheflexible
`barrier memberis elastomeric and has a central membrane
`portion through which the aperture extends.
`13. An assembly according to claim 12, wherein the edges
`of the apertureare the thickness of the membraneportion.
`14, A method offilling a cable gland with curable liquid
`material, the method comprising:
`using a filler assembly that includes:
`1.A filler assembly forfilling with curable liquid material
`(a) a dispenser apparatus for a curable liquid material, the
`acable gland,the cable gland havinga plurality of coresofat
`apparatus comprising:—
`least one cable extending therethrough, the assembly com-
`a bodyadapted to define at least one first chamber for
`prising:
`accommodatinga first componentof a curable liquid
`(a) a dispenser apparatus for a curable liquid material, the
`material, and at least one second chamber for accom-
`apparatus comprising:
`modating a second componentofsaid curable liquid
`a body adapted to define at least one first chamber for
`material and adapted to communicate withat least one
`said first chamber to enable mixing ofsaid first and
`accommodating a first componentof a curable liquid
`material, and at least one second chamber for accom-
`second componentsto initiate curing of said curable
`liquid material,
`modating a second componentof said curable liquid
`at least one first barrier apparatus for temporarily pre-
`material and adapted to communicate with atleast one
`venting mixing ofsaid first and second components;
`said first chamber to enable mixingof said first and
`at least one elongate dispenser apparatus adapted to
`second components to initiate curing of said curable
`communicate with at least one said second chamber
`liquid material;
`and to dispense said mixed curable liquid material
`at least one first barrier apparatus for temporarily pre-
`therefrom betweena plurality of cores ofat least one
`venting mixingofsaid first and second components;
`at least one elongate dispenser apparatus adapted to
`cable; and
`communicate with at least one said second chamber
`at least one second barrier apparatus for temporarily
`and to dispense said mixed curable liquid material
`preventing passage of said curable liquid material
`from the or each said second chamberto at least one
`therefrom betweenaplurality of cores of at least one
`cable; and
`said dispenser apparatus; and
`at least one second barrier apparatus for temporarily
`(b) at least one flexible barrier memberfor having at least
`preventing passage of said curable liquid material
`one respective aperture therethrough adaptedto stretch
`from the or each said second chamberto at least one
`to engage a plurality of cores of a cable to provide a
`said dispenser apparatus; and
`bather to passage of said curable liquid material along
`said cores;
`(b) at least one flexible barrier memberhaving at least one
`respective aperture therethrough adapted to stretch to
`locating at least one said barrier memberin the cable gland;
`and
`engage a plurality of cores of a cable to provide a barrier
`to passage of said curable liquid material along said
`locating an outlet ofat least one said dispenser apparatus in
`cores.
`said cable gland and dispensing curable liquid material
`therefrom so as to expel air from the cable gland.
`15. A method according to claim 14, wherein the step of
`locating at least one said barrier memberin the cable gland
`comprises locating at least one said bather member around a
`plurality of said cores of at least one said cable.
`16. Ina cable gland through whicha bundle of cores of a
`cable extend andthatis filled with a curable material so as to
`block the passage through the gland of gases from an explo-
`sion, the improvement wherein the gland definesa resin well
`at the bottom of which resides a flexible barrier member
`having an elastomeric membranein a central portion thereof,
`the flexible barrier membersealing the bottom of the resin
`well except for an aperture through the membrane through
`which the cores extend, the aperture being smaller than the
`bundle of cores so that the cores stretch the aperture to fit
`tightly around the bundle, and wherein prior to curing the
`curable material is a liquid whenit is placed in the well that
`flows in between the cores and around the bundle of cores.
`17. A kit for making an explosion proof cable passage
`comprising a gland as claimed in claim 16 and a package of
`uncured curable material that is placed in the resin well.
`18. The kit ofclaim 17, wherein the package includesa stiff
`tubular nozzle that can be inserted into the well along the
`cores next to the bottom of the well to dispense the curable
`material in proximity to the flexible barrier memberat the
`bottom of the well so asto fill the well from the bottom.
`
`2. An assembly accordingto claim 1, wherein said bodyis
`flexible.
`3. An assembly according to claim 1, wherein at least one
`said first barrier apparatus comprisesat least one releasable
`clamp.
`4. An assembly accordingto claim 1, further comprising a
`first component of'a curable liquid materialin at least one said
`first chamber, and a second componentof said curable liquid
`material in at least one said second chamber.
`5. An assembly according to claim 1, wherein the curable
`liquid material is adapted to change coloras a result of curing
`thereof.
`6. An assembly accordingto claim 1, further comprising a
`cover memberfor covering an external screw thread ofa cable
`gland to prevent said curable liquid material coming into
`contact with said screwthread.
`7. An assembly according to claim 6, wherein the cover
`memberis adapted to prevent curable liquid material from
`penetrating an endfaceof the cable gland.
`8. An assembly according to claim 1, wherein at least one
`said barrier memberhas a respective tapering portion.
`9. An assembly according to claim 1, wherein at least one
`said second barrier apparatus comprisesat least one releas-
`able clamp.
`10. An assembly according to claim 1, wherein the aperture
`is in a planarportion of the flexible barrier member.
`
`5
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`10
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`15
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`20
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`25
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`30
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`35
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`40
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`45
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`50
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`55
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`60
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`65
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`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0007
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0007
`
`

`

`US8,872,027 B2
`
`7
`19. The kit of claim 18, wherein the package contains the
`curable material in two separate parts and the package can be
`manipulated to mix the twoparts in the package and dispense
`the mixed material through the nozzle.
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0008
`
`Cooper v CMP; IPR2018-00994
`CMP Ex 2001; page CMP0008
`
`