baber/WOPTO huggingface dataset:
Patent NO-831192-L (NO)
Inventor: PLATEAU JEAN
IPC: C22B9/02
Filed: 1983-03-30
Abstract: The present invention relates to a process of segregation for producing metals such as aluminum in a very high state of purity in respect of eutectic elements. The process comprises adding to a metal which is already very pure, at least one eutectic element, in a hypoeutectic amount, to ensure efficiency of the segregation operation. The added element or elements must be capable of being easily eliminated in the segregation operation, and it must not create difficulties in regard to the use envisaged for the metal. This process can be used in particular for the production, with a suitable yield, of aluminum containing less than 10 ppm of iron and silicon, and intended in particular for the manufacture of high and medium voltage capacitors.
Patent NO-832633-L (NO)
Inventor: HUNKELER WALTER
IPC: C07D487/14
Filed: 1983-07-19
Abstract: There are described novel pharmaceutically active substances which have a pronounced affinity to the central benzodiazepine receptors and which have only a low toxicity. These active substances, namely imidazobenzodiazepines of the formula    <IMAGE>  I  wherein A is lower alkylene, n is zero or 1, R1 is lower alkynyl, lower alkenyl, aryl, (C3-8)-cycloalkyl optionally substituted by lower alkyl or (C5-8)-cycloalkenyl optionally substituted by lower alkyl, or a 5- or 6-membered saturated or unsaturated heterocycle which contains an oxygen or sulphur atom as a ring member and which is optionally substituted by lower alkyl, R4 and R5 each are hydrogen, halogen, trifluoromethyl, cyano, nitro, amino or lower alkyl and either R2 is hydrogen and R3 is lower alkyl or R2 and R3 together are dimethylene, trimethylene or propenylene, the compounds of formula I in which R2 and R3 together are dimethylene, trimethylene or propenylene having the (S) or (R,S) configuration with reference to the carbon atom denoted by  gamma , and their pharmaceutically acceptable acid addition salts, can be used as medicaments in the form of pharmaceutical preparations, especially in the control of convulsions and anxiety states and/or in the partial or complete antagonization of some or all activities which 1,4-benzodiazepines having tranquillizing activity or other substances display via the central benzodiazepine receptors.
Patent NO-841727-L (NO)
Inventor: HEISKEL ELMAR
IPC: C07C17/42
Filed: 1984-04-30
Abstract: 1. Halogenated hydrocarbon selected from the group consisting of methylene chloride, trichlorofluormethane and 1.1.1-trichloroethane, stabilized against decomposition by water, which comprises as stabilizer from 0.001 to 10% by weight of a tertiary amine of the formula RR**1 R**2 N with R being alkyl with 1 to 10 carbons and R**1 and R**2 , independent from one another, being isopropyl, butyl-(2), tertiary butyl or cyclohexyl.
Patent NO-843054-L (NO)
Inventor: LIU CHAO-MIN
IPC: C07H7/06
Filed: 1984-07-27
Abstract: The present invention relates to a novel polyether ionophore antibiotic of the formula    <IMAGE>  I    <IMAGE>  and its pharmaceutically acceptable salts . . . The compound of formula I and its salts exhibit activity as an antibacterial agent and as an anticoccidial agent.
Patent NO-852851-L (NO)
Title: Apparat til utvinning av energi fra boelger i sjoeen.
Inventor: BELLAMY NORMAN WEST
IPC: F03B13/24
Filed: 1985-07-17
Abstract: Oppfinnelsen vedrører et energiutvinningsapparat til utvinning av energi fra bølger i sjøen. På en ring-ryggsøyle (10) finnes det fleksible membraner (16), som befinner seg i innbyrdes avstand og som bøyer seg frem og tilbake under bølgenes innvirkning. Den frem- og tilbakegående bøyning av-leder luft frem og tilbake, og luftbevegelsen utnyttes til å drive luftturbiner og elektriske generatorer. Ved å anordne ryggsøylen (10) i form av en ring og fordele membranene (16) rundt ringen sikres effektiv energiutvinning uansett bølgeretning.
Patent NO-875041-L (NO)
Title: Data-buss system.
Inventor: MITSCHKE HELMUT
IPC: H04L25/48
Filed: 1987-12-03
Abstract: i Buss-systen for en serie-data-buss omfat-tende en data-blt-kllde (1) som har sin utgang (2) forbundet med en enkelt buss-llnje (3). En sekvens med data-blter omfatter en start-bit og et gitt antall data-blter. Idet start-biten begynner med en puls-bakkant og data-bltene begynner med en puls-forkant. Verdien av data-bltene karakteriserer lengden av den puls hvormed data-bltene begynner. En instruksjons-dekoder (4) tar prøver av hver data-blt ved en prøvetagn1ngs-frekvens fra en klokke-puls-teller (10) som frembringes ved en forutbestemt teller-innstilling (z8) av telleren. Sistnevnte steppes fram av pulser fra en klokke-puls-kilde (11) og styres av en kant-detektor (12). Ved slutten av data-bit-sekvensen, blir data-bit-verdiene som er skrevet inn i data-bit-hukomaelsen (18). ved prevetagnings-tidspunktene omformet,. i en instruksjons-hukommelse (20), til styre-signaler (S7) som svarer til den lagrede instruksjon. Frekvensen av klokke-puls-kiIden (11) trenger ikke vare meget nøyaktig.
Patent NO-891350-L (NO)
Inventor: ALBRECHT HARRY ALLEN
IPC: C07D519/00
Filed: 1989-03-30
Abstract: Acyl derivatives of the general formula <IMAGE>  in which R<1> denotes a substituted N-heterocycle of the formulae <IMAGE> in which R<1><0> represents one of the groups <IMAGE> and Q represents a substituted quinolinyl or naphthyridinyl group, where the N-heterocycle can optionally be substituted by one or more lower alkyl groups; and in which R<2> additionally represents hydrogen, lower alkoxy, lower alkylthio or lower alkanoylamino, R<3> represents an acyl group, m represents 0, 1 or 2 and A represents a pharmaceutically tolerable anion, and easily hydrolysable esters and pharmaceutically tolerable salts of these compounds and hydrates of the compounds of the formula I or of their esters and salts and a process for their preparation and pharmaceutical preparations which contain this compound, and also intermediates for the preparation of these compounds, and additionally the use of the compounds for the control of diseases and for the production of the preparations mentioned are described. The products have antibiotic activity.
Patent NO-891421-L (NO)
Title: Signalbehandlingssystem.
Inventor: RAYNER PETER JOHN WYNN
IPC: H03H17/06
Filed: 1989-04-06
Abstract: Et signalbehandlingssystem, serlig for behandling av et signal frembragt ved en auto-regressiv () prcsess med gap 1 de gode data, utnytter en matematisk modell basert pa en algoritme og som opprettes pa grunnlag av de gode data fer og etter gapet. De savnede data utledes da ved hjelp av den ratematiske aoedell, som i tillegg også anvendes for å forutsi de data som felger etter gapet. De forutsagte da-a f or ..de punkter som felger etter gapet sammenlignes med de faktiske data for disse punkter, og uten å foreldre den matematiske modell beregnes så de savnede data pånytt for å nedsette til et minimum enhver forskjell meHoc de forutsagte og de faktiske data for de punkter som felger etter gapet. De nye beregnede data innferes derpå 1 stedet for de opprinne-lige forutsagte data for punktene i gapet.
Patent NO-900922-L (NO)
Inventor: COATES IAN HAROLD
IPC: C07D221/00
Filed: 1990-02-27
Abstract: The invention provides a process for the preparation of a compound of general formula (I): <CHEM>  wherein Im represents an imidazolyl group of the formula : <CHEM> and R<1> represents a hydrogen atom or a group selected from C1-6alkyl, C3-6alkenyl, C3-10alkynyl, C3-7cycloalkyl, C3-7cycloalkylC1-4alkyl, phenyl, phenylC1-3alkyl, phenylmethoxymethyl, phenoxyethyl, phenoxymethyl, -CO2R<5>, -COR<5>, -CONR<5>R<6> or -SO2R<5> (wherein R<5> and R<6>, which may be the same or different, each represents a hydrogen atom, a C1-6alkyl or C3-7cycloalkyl group, or a phenyl or phenylC1-4alkyl group, in which the phenyl group is optionally substituted by one or more C1-4alkyl, C1-4alkoxy or hydroxy groups or halogen atoms, with the proviso that R<5> does not represent a hydrogen atom when R<1> represents a group -CO2R<5> or -SO2R<5>); one of the groups represented by R<2>, R<3> and R<4> is a hydrogen atom or a C1-6alkyl, C3-7cycloalkyl, C3-6alkenyl, phenyl or phenylC1-3alkyl group, and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C1-6alkyl group; and n represents 2 or 3;  which comprises reacting a compound of formula (II) <CHEM>  or a protected derivative thereof, with a compound of formula (III):  HOCH2-Im      (III) or a salt thereof in the presence of an acid at an elevated temperature, followed where necessary by removal of any protecting groups.
Patent NO-904043-L (NO)
Inventor: FETERMAN MICHEL
IPC: G07C13/00
Filed: 1990-09-17
Abstract: The subject of the present invention is a voting card characterised in that it is of the chip card or microprocessor card type and contains areas capable of receiving identification data and areas for storing voting rights, or voting areas, able to be activated, to be identified and to permit the validation of a vote and the neutralisation of the area concerned. It also concerns a method of voting by the abovementioned card comprising an initialisation phase, a phase of choice of the candidate and of validation of the choice effected by the elector, the choice validated by the elector being stored in an area chosen at random and a phase of reading and of recording by the electronic ballot-box of the datum or data validated in the storage area or areas, this or these storage areas being neutralised. <IMAGE>
Patent NO-910573-L (NO)
Inventor: WENNER ULRICH
IPC: A61F2/28
Filed: 1991-02-13
Abstract: A bone implant design is proposed in which the implant consists of a main body, in particular of a core (47) and unidirectional fibres (48), which is surrounded by a fibre latticework (41, 46). The fibre latticework consists of a raised fibre portion (21, 22) in order to maintain the structuring of the latticework on the surface of the fibre netting (41). The adhesion of the bone material (44) to the implant (40) is promoted by the structured surface. The fibre latticework serves at the same time as a torsion casing. <IMAGE>
Patent NO-923496-L (NO)
Inventor: LIM GARY M F
IPC: C07D501/46
Filed: 1992-09-09
Abstract: The present invention provides an aqueous acylation process for the preparation of antibiotic, cefepime dihydrochloride hydrate which is substantially free of the anti-isomer and the  DELTA <2> isomer comprising the N-acylation of 7-amino-3-[(1-methyl-1-pyrrolidinio)-methyl]ceph-3-em-4-carboxylate with the syn-isomer of 2-(2-aminothiazol-4-yl)-2-methoxyimino acetyl chloride hydrochloride.
Patent NO-930284-L (NO)
Inventor: REVESZ LASZLO
IPC: G01N33/577
Filed: 1993-01-28
Abstract: The invention relates to a process for producing pyridinoline and deoxypyridinoline crosslinks and derivatives thereof of formula (I) <CHEM> in which X, Y, Z, R1, R2, R3, R4,X1 and X2<(-)> have meanings as given in the description and their use in determining connective tissue disorders in humans and animals.
Patent NO-931953-L (NO)
Inventor: HILDEBRAND FRITZ
IPC: E04H6/18
Filed: 1993-05-28
Abstract: The invention relates to an automatic car park (1) having a storage silo (2) which is of annular outline, encloses a cylindrical inner shaft (4) and, on a plurality of parking levels (20) located one above the other, has a plurality of parking stalls (3) which are arranged in the form of rays and are open towards the inner shaft (4), and having a conveying unit (5) which is arranged in the inner shaft (4) and is intended for transporting vehicles between at least one entrance 15; 15a,b) and the parking stalls (3) or the parking stalls and at least one exit (16; 16a,b). Said conveying unit (5) comprises a plurality of conveying surfaces (18a-d) which are intended for receiving vehicles and can be displaced in the vertical direction and can rotate together about a central axis (21) in the horizontal direction such that, by moving vertically, they can be adjusted to the level of one of the parking levels (20) or of the at least one entrance (15; 15a,b) or of the at least one exit (16; 16a,b) and, by rotating about the central axis (21), can be moved into connection with one of the parking stalls (3) in the respective parking level (20). In order to achieve space-saving, simple construction, reliable operation and, in particular, a rapid turnover of vehicles, in said car park, the conveying surfaces (18a-d) as well as the parking stalls (3) and the at least one entrance (15; 15a,b) and exit (16; 16a,b) are arranged such that they fan out radially from the central axis (21). <IMAGE>
Patent NO-934333-L (NO)
Inventor: BACON EDWARD R
IPC: C07C233/88
Filed: 1993-11-30
Abstract: Compounds having the structure <CHEM> wherein (Z &rparstr& COO is the residue of an iodinated aromatic acid;     n is an integer from 1 to 20; R<1> and R<2> are independently H, alkyl, fluoroalkyl, cycloalkyl, aryl, aralkyl, alkoxy or aryloxy; R<3> and R<4> are independently H, alkyl, fluoroalkyl, cycloalkyl, aryl, aralkyl, alkoxy, aryloxy, halogen, hydroxy, acylamino, acetamidoalkyl, COO-alkyl and cyano; R<5> is alkyl, cycloalkyl, aryl, aralkyl, alkoxy, aryloxy, alkoxyalkyl or acetamidoalkyl; are useful as contrast agents in x-ray imaging compositions and methods for x-ray diagnostic imaging.
Patent NO-943092-L (NO)
Inventor: GOLDENBERG YOAV
IPC: H03K5/13
Filed: 1994-08-22
Abstract: A clock is phase shifted by an amount controlled by the value of a control signal by establishing at least several discrete delay times to be imposed on the clock. The control signal value controls selection of the imposed discrete delay time. An analog-to-digital converter of a phase locked loop responds to intelligence representing variable phase bits and the selected phase shifted clock to control the signal value. The selected replica is derived by at least several cascaded substantially equal time delay units. In one embodiment, a multiplexer responds to the clock, and the signal value, which is Gray coded, to control connections from one of the delay units to an output terminal. In another embodiment, the number of cascaded delay units interposed between the clock and an output terminal is controlled by the signal value.
Patent NO-950638-L (NO)
Title: Toveis magnethodemontasje med magnetoresistiv tynnfilm
Inventor: SCHWARTZ THEODORE ALBERT
IPC: G11B5/00
Filed: 1995-02-20
Abstract: En toveis magnethodemontasje (180) med magnetoresis- tiv tynnfilm er utført slik at slitasje på magnethodemonta- sjen minimeres ved: (1) å minimere avstanden mellom leseorganene (186) og deres respektive skriveorganer (198), (2) å danne magnethodemontasjen av harde mate- rialer, og (3) å anbringe en hard blokk (50) mellom lese- og skriveorganene. Magnethodemontasjen benytter bare ett enkelt par med lese- og skriveorganer pr. dataspor, men parene er reversert i forhold til hverandre slik at magnethodemontasjen er i stand til lesing under skriving på båndet i begge retninger.
Patent NO-950713-L (NO)
Title: Nettstruktur og signaliseringsprotokoll for et telekommunikasjonsnett
Inventor: NORELL BROR LENNART
IPC: H04Q/
Filed: 1995-02-24
Abstract: Nettstruktur og signaleringsprotokoll for et tele- kommunikasjonsnett. Kodene (10, 11, 12) i kommunika- sjonsnettet er innbyrdes forbundet ved hjelp av et forbindelsesnett (30) samt et signaleringsnett (41, 42, 50). Datamaskinprogramvare (100) som styrer kommunikasjonsutstyret (101, 102, 103) for hver node, er oppdelt i to typer av programvare, for- bindelses-relatert programvare (210) og tjeneste- relatert programvare (220). Forbindelses-relatert programvaregrupper (210) for forskjellige noder kommuniserer med hverandre via en første protokoll (p211) mens tjeneste-relaterte programvaregrupper (220) for forskjellige noder kommuniserer via en andre protokoll (p221) som er forskjellig fra den første protokoll. Mellom en originerende node for et anrop og den terminerende node for samme anrop blir det etablert en direkte signaleringsbane i signaler- ingsnettet, hvilket tillater at det tilføyes nye tjeneste-trekk i de originerende og terminerende noder uten behov for å implementere nye tjeneste- trekk i de mellomliggende noder via hvilke det samme anrop blir rutet i forbindelsesnettet. En generell signaleringsprotokoll understøtter tilføyelsen av nye tjeneste-trekk til eksisterende noder såvel som utøvelsen og styringen av de nye tjenester, samt de tjenester som allerede eksisterer i telekommunika- sjonsnettet. Signaleringsprotokollen (p221) er opp- delt i en basisprotokoll (240) og en eller flere tjeneste-spesifikke protokoller (241) betegnet dia- loger. Basisprotokollen blir brukt til å etablere en signaleringsbane mellom tjeneste-relaterte program- varegrupper i de originerende og terminerende noder, og til å etablere dialoger langs nevnte signaler- ingsbane. Dette gir mulighet for en modulær tilføy- else/fjerning av dialoger (241) til basisprotokollen som forblir uendret.
Patent NO-953295-L (NO)
Inventor: DIETZ HANS
IPC: B27L11/00
Filed: 1995-08-22
Abstract: The hacking blades (21) are arranged along the surface (41) on several spirals concentric to the axis (17) of the chipping tool (10) and comprises a primary cutter (50) and a secondary cutter (51). The primary cutter lies in a radial plane (52) to the axis and the secondary cutter in a plane (53) inclined to the radial plane. The primary cutter is adjusted at a first acute angle in relation to a vertical to the cutting direction (54). This acute angle is pref. between 30 and 35 deg. The secondary cutter is set at a second acute angle to the vertical, which is pref. between 10 and 20 deg. The primary cutter forms an edge of a first roof incline of the hacking blade, which is located in the radial plane.
Patent NO-954488-L (NO)
Title: Manganholdig nikkel(II)hydroksyd-pulver, fremgangsmåte for fremstilling derav samt anvendelse av pulveret
Inventor: AXMANN PETER
IPC: H01M4/50
Filed: 1995-11-08
Abstract: Det er beskrevet manganholdige nikkel(II )hydroksyd- pulvere, hvorved minst 50 % av manganet foreligger i 3- ; verdig oksydasjonstilstand, og hvor en del av manganet kan være erstattet med ett eller flere andre i 3-verdig , oksydasjonstilstand foreliggende elementer. Det er i videre angitt en fremgangsmåte for fremstilling av pulverene og det er beskrevet anvendelse av de oppnådde pulverene.
Patent NO-954863-L (NO)
Title: Halvlederanordning for höytålespenning
Inventor: KITAGAWA SATOSHI
IPC: H01L29/861
Filed: 1995-11-30
Abstract: En avstand fra bunnen av et mesaspor (15) til en underliggende pn-overgang overstiger den forlengelse av et sperresjikt fra den underliggende pn-overgang som oppstår når en spenning nesten tilsvarende en måltålespenning på- trykkes, og en sporbredde (Ws) i en annen seksjon enn et hjørne av mesasporet, dvs. i en rettlinjet seksjon, nesten tilsvarer avstanden fra bunnen av mesasporet til den underliggende pn-overgang.
Patent NO-961540-L (NO)
Title: Fremgangsmåte for fremstilling av metandifosfonsyre-forbindelser
Inventor: KAWABE NORIO
IPC: C07F9/40
Filed: 1996-04-18
Abstract: En fremgangsmåte for fremstilling av en 1-alkyltio- metandifosfonsyre-forbindelse eller 1-aryltlometan- difosfonsyreforbindelse omfatter fjerning av et tiolat- biprodukt som et uoppløselig salt ved en kondensasjons- reaksjon som representeres ved følgende formel skjema: o )2 R2S-SR2 RoS (OR1! )2 (a) Base || (b ) Base & Q metalloksyd O II ,P(OR'1)2 O II P(OR1)2 (A) der R'! betyr en rett eller forgrenet C1_6alkylgruppe, R2 betyr en alkyl- eller arylgruppe, R! betyr et farma- søytisk godtagbart kation, et hydrogenatom eller en rett eller forgrenet C^^alkylgruppe. Denne fremgangsmåte forbedrer vesentlig det oppnådde utbyttet sammenlignet med konvensjonelle metoder og forenkler samtidig renseprosessen og finner derved, på grunn av sin effektivitet, utstrakt industriell anvendelse.
Patent NO-962511-L (NO)
Inventor: RAIKAA OLLI-PEKKA
IPC: H03L7/095
Filed: 1996-06-13
Abstract: PCT No. PCT/FI95/00564 Sec. 371 Date Jun. 12, 1996 Sec. 102(e) Date Jun. 12, 1996 PCT Filed Oct. 11, 1995 PCT Pub. No. WO96/12348 PCT Pub. Date Apr. 25, 1996A signal of a locking detector of a synthesizer indicates in a first state that a loop is locked, and in a second state that the loop is unlocked. The synthesizer may be temporarily deactivated by switching off the operating voltage of a voltage controlled oscillator by means of a switching signal. The alarm circuit of the synthesizer includes a first detector, a state of the output of which changes with a delay, in response to the change of the signal of the detector conveyed to the detector, and a second detector, the state of the output of which changes with a delay, in response to the change of the switching signal conveyed to the detector, and a device generating the alarm signal. The device provides the output signal of the alarm circuit in response to the output signals of the detectors. By selecting appropriate delay-times for the detector, it is possible to achieve the intended operation.
Patent NO-970059-L (NO)
Inventor: ANIMATI FABIO
IPC: A61K31/7034
Filed: 1997-01-08
Abstract: PCT No. PCT/EP95/03061 Sec. 371 Date Apr. 21, 1997 Sec. 102(e) Date Apr. 21, 1997 PCT Filed Aug. 1, 1995 PCT Pub. No. WO96/04292 PCT Pub. Date Feb. 15, 19968-fluoro-anthracyclines of formula (I) have anti-tumor activity.    <IMAGE>  (I)  wherein: R is chosen in the group consisting of H, OH, OR4 wherein R4 is chosen in the group consisting of CHO, COCH3, acyl derivative of a carboxylic acid containing up to 6 carbon atoms; R1 is chosen in the group consisting of: H, OH, OCH3; R2 is chosen in the group consisting of: H, OH, NH2 R3 is chosen in the group consisting of: H, OH, NH2, residue of formula (A)   <IMAGE>   The compounds are characterized by having cis-stereochemistry between the groups 8-F and 9-OH. Their preparation and pharmaceutical compositions containing them are also described.
Patent NO-972157-L (NO)
Inventor: AUMUELLER ALEXANDER
IPC: C09D175/00
Filed: 1997-05-09
Abstract: PCT No. PCT/EP95/04313 Sec. 371 Date May 12, 1997 Sec. 102(e) Date May 12, 1997 PCT Filed Nov. 3, 1995 PCT Pub. No. WO96/15184 PCT Pub. Date May 23, 1996The use of 3-arylacrylic esters I    <IMAGE>  (I)  where Ar is an aryl radical which can additionally carry substituents, R1 is the residue of an n-hydric aliphatic polyol having up to 20 carbon atoms, where the carbon chain can be interrupted by up to 9 non-adjacent oxygen atoms, or of an n-hydric cyclo-aliphatic polyol having 5 to 20 carbon atoms in which ring carbon atoms can also be replaced by non-adjacent oxygen atoms, R2 and R3 are hydrogen or C1-C4-alkyl, and n is a number from l to 10, as stabilizers, in particular against the action of light, for non-living organic material.
Patent NO-972571-L (NO)
Title: Flerlagsdannende vev
Inventor: BARRETO EDNALDO VILAR
IPC: D21F1/00
Filed: 1997-06-05
Abstract: En trelags vev (13) som er anvendbar i den formende delen i en papirmaskin er beskrevet. Veven (13) har et øvre vevslag som har minst ett sett av varptråder (11) sammenvevd med minst ett sett av vefttråder (12), et nedre vevslag som har minst to sett vefttråder (14,15) som danner et øvre og nedre lag i det nedre vevslaget og minst ett sett av varptråder (16), og hvor minst en bindende tråd (18) sammenvever og knytter sammen det øvre vevslaget og det nedre vevslaget. Det øvre vevslaget er fortrinnsvis et lerretsvev, mens det nedre vevslaget er fortrinnsvis en semidupleksvev. I tillegg er vefttrådene i det nedre vevslaget (14,15) i en foretrukket anordning, i alt vesentlig stablet oppe på hverandre, det samme er varp- og vefttrådene i de øvre og nedre vevslagene. Bindetrådene (18) er fortrinnsvis varp-bindetråder, men kan være veft binde-. . tråder. Under sammenveving av de øvre og. nedre vevslagene, omslutter bindetrådene (18) de øvre vefttrådene (14) eller varptrådene (16) i det nedre vevslaget. Dermed er bindetrådene (18) beskyttet av de nedre vefttrådene i det nedre vevslaget fra normal slitasje og abrasjon, slik at veven får en økt levetid.