PLASWALL

WIPO Patent Application WO/2010/134093

A2

The present invention discloses a wall spacer preferably made from plastic or any other similar material used in combination with a pair of formworks positioned in predetermined parallel spaced relation to define inner space for concrete mixture to be poured therein, for a concrete wall having a predetermined thickness, and horizontal and vertical rods positioned within the inner space for reinforcing the concrete wall. The wall spacer includes a box- shaped body having two side walls securable to a said formwork board, a top wall, a bottom wall and an open front and rear portion. The top wall and the bottom wall each have at least one opening adapted to receive at least one vertical reinforcing rod. At least one inner wall is located within the body, the inner wall having at least one opening adapted to receive at least one horizontal reinforcing rod. Preferably the inner wall is integrally connected to the body and rigidly supported on each side wall by at least one triangularly formed stiffening member. The inner wall further includes a central opening and openings formed near each corner. The central opening is adapted to receive the at least one horizontal reinforcing rod. A wall spacer is preferably formed from a polymer material such as plastic, polyurethane or other such material. This has the advantage of being light weight, easy to install and will not rust or corrode. According to another aspect of the present invention there is provided a formwork structure including an opposing pair of formwork boards and a plurality of wall spacers, as described above, located in spaced relationship between the formwork boards. According to a further aspect of the present invention there is provided a method of wall construction including the steps of erecting at least one formwork structure; placing vertical reinforcing rods and horizontal reinforcing rods through each of the wall spacers; and filling the cavity in between the formwork boards with wall material, preferably concrete. The use of wall spacers according to the present invention reduces the weight of the formwork structure facilitating construction of the concrete wall.

TAYLOR, Mark Anthony (())

IN2010/000293

November 25, 2010

May 05, 2010

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FABTECH TECHNOLOGIES INTERNATIONAL PVT. LTD. (615/717 Janki Centre, Off Veera Desai RoadAndheri, Mumbai 3, 400 05, IN)
TAYLOR, Mark Anthony (())

ROY, Chowdhury Mahua (Partner, Solomon and Roy IntellectualProperty Services Calcot House,3rd Floor, 8/10 M. P. Shetty Marg,Fort Mumbai 3, Maharashtra, 400 02, IN)

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UT Claim: I Λ wall spacer lot posiiiunimi between ,ιπ nppn'.iii" p.ui nl Inmiwnrk IHMIII-- iiicliidimi ;ι havnu- ι«" -.ide w.ilk n-spa IIVΓK --n ui.tl-lc in .1 Is said Inimwi-rk hoaid a lop wall. ,1 helium nail and .111 open ln>iil .111.1 ι< .11 portion, wheicin tin- l<>p wall and (lie I'ollnm wall cai Ii lι.ι-c .it Ir.1.1 "in iipemπμ adapted In icceixe at least oiϊt reirilou iπu iml. and .11 lc.i'.i fin- inner wall is Itn-aled within the the inner wall It.ix hi!1 at least mu- ι>|>ι-ιπn!' adapted Io rceeite at least nnc ln>rι/ι<ntai ieiiilnu mi! nnl .'. A wall spacer aeiordmu In ilaini I wheieui the miiei «.ιll is iniei'i.ilK ciiniiecied Iu the Imdx and snppoileil mi eaeh side wall In .it IcaM oin- Irianμularh Inniied slillcmiiμ ineinlvi. the iimei uall iiu lutlinc .1 n-nii.il opening and opeπinμs lomied πeai eaili comei and wheiein the *. i~iili.il npenms1 ?.ϊ is adapleil Io llie al least one limi/mil.ii ieinloit iπr nu'l I <\ wall spaeer aetoidiiiϋ to el.iim I 01 ■ loimeil liom ,1 puhmei m am • -1 hi 1 sitiiilai iiialeiial Ul I. Λ lonnwoik striieinie nιelιιdiιi!~ an o|~posiιi!> pan nl l<-ιmwmk I-K.IMK .mil .1 phiiafilv ol wall spacers as ilainied in ;m\ one nl ilaims I in ' Imaii'il in spaced ielalioiisliip hclwcen the I'minwmk l~ι»anK i ιm.lπι< lion mi Imliii'111 if -.lips <<l I reel iπj! ;il leasi IMIΓ li'imwink .tιιulιιn-,ιstl.ιιιπi.ιl iii il.iiiπ I I'laeiiiu vertical ieiiitiueitii1 ioiK .mil lικιι/ι>ιιl.ιl IOIIII>H iiw HMK ιlικ>ιn>lι i-.u Ii <>l (he S)KiLCi v ami lϊliiuμ llic in lieiweeu I he luiiiiumk I'IMHIN willi malerial. pieleralilv emieiele

I Ins imcntinn icl.ilcs in "cncial conciiti wall pmdiit tmn mil 11101» S p,irtιuιlιirl\ to ,1 \\,ιl! spacer pn.kt.ihh made lioiπ pl rlu oi .ιn\ dim simil n material

ILukgroiincl of I he IIIMIIIIOM

In (lrdcr Io erect .1 \ιιtιcal concrete u.ill H is mmiiinu In κlι llu mm it U

IO wall Willi steel remlorciπμ members nl some l\pe W Inn uiilni' llu w ill nllcπ verticil .lliiniimuin or ii.ih.ini/cil slid situl IΓ.IIIKS ,111 msuicd in suppnii the lomiwoik pieces ,ιιul posilion ,uul hold tin Imu/nnlal Si ₁ 11 KIMICKMI" incmhcrs w itliiii llu loimwoik puns pmn in llu unuiili miMiiu IH mi' poured in loiinwoik pm.es Λluπiiπiuiii Hid sin I siiul Ii inn wlnU

I "i briim Mioii" II.IM. llic hen \ ,ιml dilliiull Ic HIM ill In addition llic steel haincs _< ιrc prniu. l>< rustini' and llu .ilυminmin h nm i in corrode uhin 111 coiil.icl w M Ii llu tone nil

DIM ussioil or mini ion ol am pun ol pi 101 arl in I Ii is spn ιlκ ,iln>n 1 - m>ι in IH .'() taken as an admission thai lhc piini ait is pill ol llu innimnn <UHI II knowlnljic ol the skilled iuldicsscc ol llu spnilualmn 111 huh 1 m nllui cuiiπlrx

Disiiiptimi (pfllir

It would he inKiintaiiLuiis In Iu able In an impnuul tin in nl Kiπlπiiiine π coπneie wall

Accoidmu Io one aspect ol llic present HIM iilion lhcii is uli d a w ill sp u 11 includes a box sliiipcd boiK li.uinu two side wall*, it <-pιι livi l\ vniii il>k in 1 M) said Inrmwork bo.iid a top w.ill ,1 bnllmn and an <I|HII linnl unl u 11 portion lhc lop wall and lhc bottom wall iach have .11 Ii isi niu npininu adapted to ΓCCCIM M least one \crlιeal 11 mioii ins. ¹ iod \l Ii lsl nικ npuiiin ¹ .ulnplcd uillnπ lhc niu πiiui \\ ill r. Im ikd williiii the MIL iniKi wall li.ninu .it kasl om opuitm ulapkd U< IHUM ,ιl k.isl one lioπ/oiH.il RIIIIORIMU iod

I'Kkr.ibh t tic iiniLi wall is ionmUid lr> llu hod\ iinl πridU "Ϊ siipporlt.il on oii.li silk u ill In .ιl kasl out. III,III>MII.III\ IOIMILII lilkiim ⁱ " member Ihc inner wall lurlliu indiuks ,1 HΠIMI opinini' .mil <»pi nitn-s lorπicd nc.ir CILII LPΠK I 1 IIL iuili il o(κnmi! is id ιpκd In in i ι\ι il U l- _^ i KIU liop/onlnl rt.ιnloRiι>u mil

IO Λ wall sp.iLfr is lotmtd (loin .1 pohmu ni.ikii il sin.li is plisin puluiretli.mc or otlitr SIILII III.IILII II I Ins li.is llu nl IH m> li"hl vM'iμhl c,ιs\ Io insi.ill ,iιιιl i\ ill πoi minuli

Actordint; Io .lnolhci .isptel of llii picstnl imtnlicπ llu 11 is 1 I^ forniiMiik slmtdin. ιιn.liιdιιm ,111 opposui" p.in πl li'iinwink Im ml imi 1 plιιr _< ilιl\ ol u.ill spitns .is disuilnd .IIKHL IHL tkd in spnid ulilinn lnp llic ((irnnMnk lio.uds •>

Λ(-(.ordιιm to Λ ltiitlici aspn.1 ol llic piLsciil iinLiilioii linn is piovidid 1 20 method of u.ill tcuislniLlion ifiilmlinu II". skps o| I iLilinu ,ιl IL, isl oiu lciiinMnk slim tint.

I'l.kini! K inloii 1111 ^» tods mil I1011/011I.1I KIΠIOII III" iods ιlin>ιi"li i u Ii ol the w.ill sp.ittrs .mil

?^ I iltiπμ llii ι_.i\ιt\ in hilwnn Ilk loinnλoik IMMHIS W tilt ^ ill mikii il picki.iliK toiKKk

I IHIS use (>l wall spαu.ιs .RLOKIIIIU IO ilk ptiM.nl HIM. m ion udtnis llu ol llκ Itiimwoik slnn.ltiR I.11.1I1I Uιn» LIMISIΠKIKMI ol iciintU u ill

W liricf Ocstrψdtin Of I Iu llι.ιwιιιns

II will he (.oinuiiiilt Io disirihi tl". IIIM MIIOII with iispnl Io llu. •!«.(.< ιιnp,ιn> inu dr.iw mμs WIIKII illiisli.ik prikiu d ₁ MII'IMIIIULIIK llu 11 >•! ⁽ )ilu 1 embodiments OI llii invention aic possibk ,ιιul i cnvnjin iilK llκ p iiiiml

(il lhc aecompam mi' dι.nvm»s is iioi in In. iimkiMood ,ι ^ι upi eulm" ilu reneralitv ol the puecdini.' dcsi i iptioii <>l I IK HIM nliori

^ I igiirc 1 is a pci spec live \u-u ol <\ w .111 sp.uer in aiioid.iiui with in embodiment ol lhc picscnt invention

I iμuic ^ is ;i peispixIlM- v lew ol ,ι wall spaiei in aeuxd. ιικ< wilh .innllu i embodiment ol lhc present invention

I iμure I is ,ι p.irli.ilK tut ,ι\\,ι\ \ιew ol .ι wall -.how mi' (hi w.ill .p m i IIMII 10 lhcicin

I iμurc ) is a cross scUion.il i.ikin .lion" .ι w.ill slmwiii" ¹ llκ w.ill .p.m i nsαl therein

Dclaik-d Dcsei ipliiin Of I'lelirti-d I inhiitlnm ill

IS

I MIIKKIIIIICIUS ol the w.ill sp.ιιt.1 will now IK ikswilxil wiih uluiiui I" llκ ilr.nMims

I iμurc I shows ,ι wall sp.icti .KIOΠIIΠL; IO ,III <. niliodiiiu ill ol llu pii .ml invention I he sp,κtι is used Im posiiiomii" lnlwuii .in opposnM' p,m •>!

2 ⁽ 1 lorinwoik lio.iids Io LMISIIIC the ri-sulliii is ol ,ι iimloim lhiikiu -s mil I" help keep the ho.tids in pl.nc ni.iieri.il ι. IH IIII- pl.md IHIHUII the lormuoik ho.uils I he w .ill sp.im I inehidis .i / li.rv irn- Iwo siik w.llls X itspiLliM l\ smn.ihk Io ,ι s.iul loimwink Im.inl ,ι lnp w ill '' .1 hollnm wall M ⁾ and an open lioin I I and ieai I ' poilions I he lop wall *' and

2 S the bottom wall III e.ieli h.nc .it leasi om opcninu I \ adaplid to iui a! liasl one veitital reinloii Hi^' iod fi I ii'iiii I shows llu wall sp.u 11 h,ι\ nn- iwo p.ius ol itpcmnμs ntUplctl Io αieiM at leasi one uitu.il runfon IM< ^> ■« ^■ »«! ih.it ι ^> >,ιdι ol the lop ^l ) ϊiiiil bottom IO walls have two opιιιιιi"s I HΉH ' shows in alternate embodiment IMMIH. loin pans ol opi niiυ's I >.ι 11 >t

W reinloicinu iods that is iaeh ol the lop and boiloin walls linrr opi IHIK ¹ . In eniliodinienls shown in both I mines I and ' llu πiiu i wall I r Im.ilol w n Ii in (he hod \ 7 ol the wall sp,ιι.er and has ,ιl kasi one opi inn" I ^ .ul.iplid Io let-Civc .il lc.isl one hoii/oπl.il remlmiiiKi mil ^■» llu mini w ill s hiilliu NlruiiMh ,iml snppoil In ihi ul tin. w ill spun Hn is

<Klv.inl<lgl(UIS as llκ sp.ll Il IS SllOllJ.'ll ,liκl I lsls InMi ¹ I I

I he inner wall 'I IK iiittμi ιll\ imiiiitlid IO llii / mil m \κ n> ull\ supported on c.ieli suit wall 8 In a! liasi one slilluini" imnihu I l I Iu

S slifliumu iiicmhti .uKanlaytmisK uivts suppmi In MIL w ill pun IVclerahh the slilluiuiμ mtπihii IS liiani'iilaih luiπud .is shnwii in I p'nu s I and ^ I he inner wall I piilu.ihlx IIRIIUIIS I milial nptmii" l> uid npt IIIM^S 16 lurnied near iaih iomir I lit ttnlial (iptinim I ~> is ul.ipitil 1«' innvt il least one Imri/ontal iciiilditutg mil S

IO I he sfMier is m.uli ul poKinei ami mint pit Iti.iliK plaslit oi am IMIH i simil.ii iiialtii.il I he spatu is ihtielon hi'hlwimhi .mil luiitt in msi ill I iirthcrπiote puKmti/plasiit ilnts nnl ιι,κl IIK u'limii m nilui m.iltπals tiseJ-lo tit. Ut lht wall lhtiiluit llit w _< ιll sji.uiis nl iln pi i SUM invcπlion do not nisi in tmiuik n\ti Unit I lit spams inn ils!< Iu matk mil lhi \\ ill MHIH smiml priKilinj; pruptilits

Λ luπiiwuik sliutluit Jl' .is shnwii m I ii'iiu » (wiilmul lht \uiu il <> >•< lmrι/()nl,ιl S rcinlnitmμ h.ns) is nlltn pit assuπliltil and liaiispmkil |ι> i worksite 1 lit luiniwnik slnitluie 2 * tiithuks in nppnsmr p in nl liiiiiiumk

20 hoards 2 and a pliiraliU nl wall sp u tis Uitaltd in sp.it i il ii l.tluuiship K iwi ui the loriiiwork hnaids .' I lit wall spams, an spat id smli Ih il iuiual .ιιn\ huπ/oπlal ieinloitiim hais tan IK platid lhionuh (lit iispuiisi opi inn' s I ! IS

Λ truss sectuni lliiuii'ili a tnnsinitltd wall is shown in I IIMIU I In S conslrtK ting a wall at kasi one loiniwnik siuitliiit .is disuilnd ilnni is creeled Vcrlital ieinlorcinu rods 0 and lion/imlal iuiilou iim iods -> an plated tiimuμh lht respttlι\t openings l < I "> ul ι.κh ol lht w ill _^ p mis I Iu ta\ il \ ^"1 O in hctwttii tin lumiwmk hnaids ^" " is | Iu n III ltd \\ nil w ill in iiui il • pit ItrahU tuntitlt

W Λs shown in I imiit I lht wall spam I is ill.it lit d In lht niiiu suit nl lormwurk hoards ^" > I loπ/unlal reinlurtiiiL' mils s pass Ihnih'li llu iiiili.il opcmnji in lht wall spater wink \ulual iuiilou ιιiι> nxls pass lln ui"h llκ o|ienιnus in lht tup and hnllnin wall-, ol lht n.ill spam I Iu MIIH d irinlnπ mi ¹ ιt>ιl"> .in.' πi'l iiMliid In l\\i ( π llu lι<ιπmι>ιk !•" M ₁ I l>ιι! i ■ • pi u i ■' Id oiH ¹ silk" PI I IH IH >I I /mild I u mloii im ¹ n«l > I Iu M IIH.II ι< ιnl<<n iiu n "I \lh 11 ¹ ilm K iπnπ ill m nut

\ CIlH .ll H'MllnH 111' HMl m.U IH W-t. (i .11»! till 'A MltH.ll H llll'in III" mil ιl\ l>

I)C pl.iicd C(|ιιιιlιs(<ιιl( (or ,il HIM dr I,HH i s) mi i iilv i nit nl I Iu !i- »ι ι,'< -nl i! n nilnu in' ¹ Mul

I Ins .iii.mri'Uti'iit r. u. Il IHMIII' U I.IIIM In'lilui i"lil ,ιl .ι> l.u iiu id I In Diiu ill C(>ntrfli .IΠMIIKI lilt. II'IMIOK in" l>.ιιs llii uin minimi/ Mi'' mil CIiS)H ins.' m.iMiiuim slu'ix'lli IIM IIH- ιm« u Iv u.ill

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