baber/WOPTO huggingface dataset:
Patent HU-185273-B (HU)
Inventor: POTH TIBOR
IPC: A61B3/10
Filed: 1982-04-02
Abstract: A találmány tárgya mérőműszer, szem anatómiai helyzetének mérésére, előnyösen keretbe foglalt látásjavító szemüvegek műszaki követelményeinek meghatározására és vizsgálatára. A találmány lényege abban van, hogy mérődobozának tárgyoldalán kiképzett, vizsgálandó személy szemeit szemüvegkerettel együtt befogadó tárgyablakot, továbbá orvosi vény szemre vonatkozó ábráit egy időben a mérődoboz vizsgáló oldalán elrendezett két mérőszemlencse tisztánlátás síkjában leképező optikai rendszere van. A találmány nagy előnye, hogy az a keretbe foglalt látásjavító szemüvegek elkészítéséhez szükséges valamennyi vizsgálat és műszaki követelmény ellátására és mérésére alkalmas, mint ilyen pedig kiküszöböli a szemüveg optikai geometriájára vonatkozó pontatlan jellemzőket és ugyanakkor ellenőrzési lehetőséget is ad a már elkészült szemüvegek jóságára vonatkozóan.  lábra -1-
Patent HU-181557-B (HU)
Title: Transporter
Inventor: BODEWES HERMANUS J A
IPC: B65G15/60
Filed: 1980-05-09
Abstract: An accumulator conveyor has rollers forming an object transport surface and an endless flexible drive member. The drive member, at intervals, rests on and travels over support members each resiliently supported for vertical movement. Each support member has a generally circular drive member support having a flattened area of reduced radius and also a circular feeler extending into the path of objects on the transport surface. An object held stationary over the feeler depresses it and the drive member, with the drive member continuing to rotate until the flattened area is uppermost, dropping the drive member and terminating its drive engagement with the object above.
Patent HU-193325-B (HU)
Title: Scanning and preprocessing circuit for centrally controlled apparatuses, preferably telephone exchanges
Inventor: SEEFRANZ TAMASNE
IPC: H04Q3/54
Filed: 1985-03-29
Abstract: The scanning apparatus is suitable for the scanning and preprocessing of data in single-bit and multi-bit form and includes an address generator 7, multi-bit address summator 3, data selector 8, sampling circuit 6, state and/or change in state storage unit 9, comparison and evaluating circuit 10 and interface circuit 12. <IMAGE>
Patent HU-206228-B (HU)
Title: Cover for solid blocks made of earth or similar material
Inventor: DELMAS PHILIPPE
IPC: E02D29/02
Filed: 1985-08-28
Abstract: This invention relates to a facing for the bank of earthen formations, particularly soil masses reinforced by geotextile sheets, said facing being composed of plates individually hooked to the bank by supple hooking elements, and the plates are disposed in substantially horizontal rows, the plates of one row partially overlapping the plates of the row immediately therebeneath.
Patent HU-191564-B (HU)
Inventor: PEREDI JANOS
IPC: A61B5/16
Filed: 1984-10-26
Abstract: A találmány tárgya relaxációs pszichofiziológiai készülék, amelyben bőrellenállást (Rb) mérő elektródákhoz ellenállás-feszültség konverter (EF) csatlakozik. Az ellenállás-feszültség konverter (EF) kimenetére egyenirányítón (E) keresztül erősítő (2)■■ van kötve, amelynek kimenetére láncba kötött feszültségvezérelt oszcillátor (VCO) és formáló áramkör (F) csatlakozik. A készüléknek a kezelt személy (5) számára visszacsatoló jelzést biztosító ingerlője (4) van, amely vagy a formáló áramkör (F) kimenetére (35), vagy a formáló áramkör (F) kimenetével (35) sorbakapcsolt kapuzott áramgenerátor (ÁG) kimenetére van kapcsolva. A találmány lényege, hogy a készülék ellenállásfeszültség konvertereként vezérelhető ellenállásfeszültség konvertert (VEF) tartalmaz. A mérőelektródák (ME) vezérelhető ellenállás-feszültség konverter (VEF) bemenetére (32) csatlakoznak. A vezérelhető ellenállás-feszültség konverter (VEF) vezérlő bemenete (34) szabályzó áramkör (SZ)  szabályzó kimenetéhez (45) csatlakozik, a szabályzó áramkör (SZ) szabályzó bemenete (44) visszacsatoló láncon (L) keresztül a kapuzott áramgenerátor (ÁG) kimenetére csatlakozik. A találmány egyik előnyös kiviteli alakjánál a feszültségvezéreit oszcillátort (VCO), a formáló áramkört (F), valamint a kapuzott áramgenerátort (ÁG) egyetlen csengő-oszcillátor valósítja meg. és az ingerlő (4) a kapuzott áramgenerátor (ÁG) kimenetére van kötve. -1-
Patent HU-207865-B (HU)
Title: Process for producing 3-exomethylene-cephame derivatives
Inventor: VERWEIJ JAN
IPC: C07D501/14
Filed: 1988-07-13
Abstract: A process is provided for the preparation of 3-methylene and 3-halomethylene cepham derivatives via 3-phosphoniomethyl-3-cephem derivatives, which in turn can be prepared from 3-halomethyl-3-cephem derivatives. The preparation can be carried out with or without isolating the intermediate phosphonium cephem compounds. The 3-methylene and 3-halomethylene cepham derivatives and in particular the 1-oxo and 1,1-dioxo cepham compounds are also prepared by reducing a 3-halomethyl-3-cephem derivative with activated metal, preferably zinc or magnesium.
Patent HU-201552-B (HU)
Inventor: MORGANS DAVID JOHN
IPC: A61K/
Filed: 1985-12-11
Abstract: A találmány tárgy új eljárás az (I) általános képletű 9-(l,3-dihidroxi-2-propoxi-metil)-guanin-származékok elállítására a képletben R1 és R3 jelentése hidrogénatom, 2-18 szénatomos alkanoilcsoport, 1-adamantoilcsoport vagy fenil-(l-4 szénatomos)- alkil-csoport - olyan módon, hogy valamely (A) általános képletű vegyületet - ahol R1 és R3 jelentése egyezik a fent megadottal, R4 pedig adott esetben helyettesített 1-4 szénatomos alkilcsoportot képvisel - guaninnal és egy hexa-(l-4 szénatomos alkil)-diszilazánnal reagáltatnak, majd a kapott reakcióelegyet valamely rövidszénláncú alkanollal kezelik és/vagy R1 és R3 helyén hidrogénatomot tartalmazó (I) általános képletű vegyület előállítása esetén a kapott reakcióelegyet ammónium-hidroxiddal és vízzel kezelik.  0   CH^R! RA-C0^0—CH" A leírás terjedelme: 12 oldal, 3 ábra (A) Ch'2°R3 CM in in  -1-
Patent IT-1210633-B (IT)
Title: Cement materials vibrator
Inventor: CAVAZZUTI FRANCESCO
IPC: B28B/
Filed: 1981-07-22
Granted: 1989-09-14
Abstract: A fluid filtering process comprises (i) passing the fluid through a filtering media defining an inlet surface, about which the fluid dirt becomes entrapped in a layer form, (ii) discharging the filtered fluid, (iii) periodically reversing the direction of the fluid flow, and (iv) draining the reversed flow fluid and fluid dirt mixt. thus rinsing the filtering media and preparing it for a following filtering cycle, characterized by depositing of a layer of previous granular material about the inlet surface at the beginning of every filtering cycle
Patent IT-1242445-B (IT)
Title: Dehumidification system in particular for the walls of buildings
Inventor: NICOLUSSI HANSJORG
IPC: E04G/
Filed: 1990-10-22
Granted: 1994-03-04
Abstract: A dehumidification system is described, in particular for the walls of buildings. According to the invention, the system consists of at least two electrically conductive armatures, between which the wall material to dehumidify is placed, and which are connected electrically with a source of electric energy. <IMAGE>
Patent IT-1181280-B (IT)
Title: Dough pulling and calibrating machine for grissini
Inventor: OLIVERO GIOVANNI
IPC: A21C/
Filed: 1984-01-26
Granted: 1987-09-23
Abstract: The data reduction apparatus is used in a system where speech signals, e.g. between telephones, are digitised in a circuit and later reconverted. Successive blocks of digitised data, e.g. 16m seconds thereof, are compared with each other in the frequency domain in a comparator. The conversion is effected in a circuit block. If one block is similar to its predecessor within pre-set limits, that block is not sent to the output, and instead a control signal is passed to the communication link to instruct a store to repeat the previous block at the other end of the communication link. Thus only critical data blocks are transmitted and the data rate is reduced.
Patent LV-13641-B (LV)
Title: Immunostimulatory oligonucleotide multimers
Inventor: AGRAWAL SUDHIR
IPC: C12N15/117
Filed: 2007-01-15
Abstract: The invention provides an immunostimulatory nucleic acid. In certain embodiments according to this aspect of the invention, the sequence of the immunostimulatory oligonucleotide and/or immunomer is at least partially self-complementary.
Patent LV-14894-B (LV)
Title: System and method for control of motorcycle suspension
Inventor: MUNDI MĀRIS RALFS
IPC: B60G17/00
Filed: 2013-01-28
Abstract: The present invention relates to a system and a method for improving handling characteristics of a motorcycle in braking and/or cornering, especially for controlling characteristics of front suspension. The system comprises a front wheel suspension (1) having fork (2) and a wheel (5), and adjusting mechanism (6) adapted to change the stiffness and/or dampening of the front wheel suspension (1). The system further comprises an actuator (20) installed on a bike in a proximity of rider's knee and is operatively connected to the adjusting mechanism (6), wherein it is configured to be manually controlled by the rider's (9) knee (8), in result of which the stiffness characteristics of the front wheel suspension (1) can be controlled.
Patent LV-14937-B (LV)
Title: Electrode for electrochemical double-layer capacitor (edlc) and capacitor with such electrode
Inventor: MALETIN YURIY
IPC: H01G9/00
Filed: 2013-05-30
Abstract: The invention applies to electrochemical double-layer capacitors (EDLC). With the aim to increase specific capacity and to decrease specific inner resistance of the EDLC, distribution of pore size of porous carbon material used for manufacture of EDLC electrodes is chosen such that contribution to characteristic surface of carbon material made by supermicropores of 1 to 2 nanometres in width is more than 20 %, while contribution of mezopores of more than 2 nanometres in width is less than 2 % (see curve 3).
Patent LV-10428-B (LV)
Title: Novel vitamin d analogues
Inventor: JOHN CALVERLEY MARTIN
IPC: A61K31/59
Filed: 1993-09-28
Abstract: The present invention relates to compounds of formula (I), in which formula R stands for an alkyl group containing from 7 to 12 carbon atoms optionally substituted with a hydroxy group; and derivatives of the compounds of formula (I) in which one or more hydroxy groups have been transformed into -O-acyl or -O-glycosyl or phosphate ester groups, such masked groups being hydrolyzable in vivo, in pure form or in mixtures. The present compounds find use in both the human and veterinary practice in the treatment and prophylaxis of autoimmune diseases, including diabetes mellitus, hypertension, inflammatory diseases such as rheumatoid arthritis and asthma as well as diseases characterized by abnormal cell differentiation and/or cell proliferation, and/or imbalance in the immune system.
Patent LV-12664-B (LV)
Title: Synthesis of 4-substituted 2-oxobutenic acid sodium salts
Inventor: SLAVINSKA VALENTINA
IPC: C07C59/42
Filed: 1999-09-29
Abstract: Salts of 4-substituted-2-okso-butenoic acids are known as valuable products for synthesis of modified amino acids, amino-diols and other biologically active compounds, for example, antihypertensive drugs. There could not be used Cordier-method for obtaining such products, because the main raw material - pyruvic acid - is non-stable under storage conditions and during distillation process. The pyruvic acid causes also low yield of end-product having not enough pure quality. The invention offers new method for producing salts of 4-substituted-2-okso-butenoic acids using as raw material a stable compound - ethyl pyruvate. The mentioned method provides increasing yield of end-product to 15 - 25% according to prototype and provides high pure quality. The method is universal. There is obtained a group of derivatives containing reactive compounds having the general formula RCH=CHCOCOONa, wherein R is
Patent MX-165976-B (MX)
Title: Mejoras a resinas de sulfonio utiles como vehiculos para moler pigmentos en electrodeposicion cationica
Inventor: JOHNSON MARK WILLIAM
IPC: C09D163/00
Filed: 1987-06-30
Abstract: La presente invención se refiere a una resina catiónica adecuada para usarse como un vehículo de moliendo de pigmento capaz de producir películas lisas mientras que mantiene ultrajes de ruptura altos que se deriva de una resina epóxica y que contiene grupos de sulfonio ternario y grupos alquilo fenóxidos en los cuales el grupo de alquilo contiene por lo menos 4 átomos de carbono; dicha resina catiónica contiene de desde 0.25 a 1.4 milequivalentes de grupo sulfonio ternario por gramo de resina y contiene de desde 1.9 a 25 por ciento por peso de grupos de alquilo fenóxido basado sobre el peso de la resina catiónica; dichos grupos alquilo fenóxido estando presentes en la resina catiónica mediante reacción del alquil fenol correspondiente con la funcionalidad epóxida de la resina epóxica.
Patent NO-142151-B (NO)
Title: Trykknappanordning for tastbord eller liknende som er stoept i ett stykke av et fjaerende materiale
Inventor: VAERLIEN KAARE
IPC: B41J5/12
Filed: 1976-12-20
Abstract: Trykknappanordning for tastbord eller liknende som er støpt i ett stykke av et fjærende materiale.
Patent NO-151671-B (NO)
Title: Avvanningssystem og fremgangsmaate ved installasjon av samme
Inventor: ISAKSEN ROALD H
IPC: E02B/
Filed: 1980-08-08
Abstract: Todelt awanningssystem for større plane arealer med i grunnen nedlagte transportrør (1) for viderefør-ing av vann. Transportrøret legges ned i grunnen med nødvendig fall og tilkobles sandfang, eventuelt andre rør.Slisser er anordnet i oversiden av trans-portrøret (1) for teleskopisk innføring av nedfallsrør (4) som strekker seg opp til arealets overside og flukter med dette. En overflaterist (3) dekker nedfalls-rørets (4) åpning.Unøyaktigheter i arealoverflatens nivå i forhold til planlagt kan opptas med systemet ved at ned-fallsrøret (4) stikker mer eller mindre inn i trans-portrøret (1) som uavhengig av arealets overflatnivå. kan få et for transporten av vannet nødvendig fall.For spesielt store avstander mellom arealets overflatenivå og transportrøret kan innsettes et for-lengelsesskjrt mellom nedfallsrøret (4) og trans-portrøret (1) .
Patent NO-154840-B (NO)
Title: Analogifremgangsmaate til fremstilling av terapeutisk aktive substituerte 2-amino-3,4-dihydropyridinderivater.
Inventor: MEYER HORST
IPC: C07D211/84
Filed: 1980-11-25
Abstract: Substituerte 2-amino-3,4-dihydropyridinderi-vater med den generelle formel (I). hvori. R betyr hydrogen, eventuelt substituert alkyl, eventuelt substituert aralkyl eller eventuelt substituert aryl,. R 1 og R 2 er like eller forskjellige og betyr eventuelt substituert aryl- eller heteroarylrest, Rog Rer like eller forskjellige og betyr hydrogen eller en eventuelt substituert alkyl-, aralkyl-. alkenyl- eller alkinylrest eller danner sammen med nitrogenatomet en 4-7 leddet ring.Det omtales også fremgangsmåte til deres fremstilling samt deres anvendelse som legemiddel, spesielt deres anvendelse som lipidabsorbsjonshemmere.
Patent NO-150682-B (NO)
Inventor: MURMANN WALTER
IPC: C07H13/10
Filed: 1981-05-19
Abstract: The nicotinic derivatives of glucosamine, particularly N-nicotinoyl-glucosamine tetranicotinate are described as having anti-lipolitic, hypocholesterolemizing and antiaterogenic activities, at an equal or higher level than those of nicotinic acid, without the objectionable side effects shown by the acid. To prepare the compounds of the invention, nicotinoyl chloride hydrochloride and glucosamine hydrochloride are reacted in an organic solvent at a temperature of between 40 DEG  C. and 120 DEG  C.
Patent NO-179258-B (NO)
Title: Fremgangsmåte ved pæling
Inventor: LOF UNO
IPC: E21B33/13
Filed: 1988-08-25
Abstract: Pæl, beregnet for grunnforsterknlng består av et antall delelementer (1,2 og 16), der hvert delelement (1) i sin ene ende har en konisk, gjenget tapp (4) og et ringformet anslag (11), og i sin andre ende et konisk, gjenget hull (3) som kan motta nevnte koniske tapp (4), idet hullet (3) er omgitt av et ringformet anslag (12), beregnet for samvirke med det førstnevnte anslaget (11). Delelementets (1) materiale har en slik beskaffenhet at pælen (1,2 og 16) er bøyningsstiv og motstandskraftig mot trykk- og strekkpåkjenning. Delelementene (1,2 og 16) har likt tverrsnitt og kan være sirkelformet, ellipseformet eller mangekantet.
Patent NO-175036-B (NO)
Inventor: LUNDGREN DAN
IPC: A61B17/32
Filed: 1990-09-07
Abstract: PCT No. PCT/SE89/00084 Sec. 371 Date Sep. 7, 1990 Sec. 102(e) Date Sep. 7, 1990 PCT Filed Feb. 27, 1989 PCT Pub. No. WO89/08429 PCT Pub. Date Sep. 21, 1989.A scalpel comprises a shank having a holder for releasably mounting a surgical blade. A ball of plastic material is formed by injection molding on the blade proper which consists of metal. The holder includes a sleeve, which is threadedly engaged with the shank at one end thereof and adapted to be screwed axially along the shank. The sleeve forms a ball socket, which is adapted to receive the ball of the blade therein. A clamping rod extends axially within the socket between the shank and the ball to engage and disengage said ball by the sleeve being screwed on the shank. The end of the clamping rod, which is adjacent to the ball, forms a circular sharp edge of a diameter which is substantially smaller than the diameter of the ball, thus cutting into the plastic material of the ball when the sleeve is screwed to engage the clamping rod with said ball.
Patent NO-172170-B (NO)
Inventor: KARLSEN JOERGEN
IPC: A63C5/00
Filed: 1991-02-07
Abstract: On a front section, an Alpine pair ski has a greatly increased width, and the lower edges (3a') of the sides (3a) are gradually raised on this section so that they diverge upwards in relation to each of two imaginary, straight, parallel lines (2) which constitute extensions of the lower edges (3') of the sides (3) of the rest of the main body.
Patent YU-47659-B (YU)
Title: Spojnica za brzo spajanje cevi (4; 23)
Inventor: CALMETTES L
IPC: F16B2/24
Filed: 1989-10-10
Abstract: ili polukrutog, kao što je neka plastična masa, gde spojnica (1; 21) ima, na kraju predvidjenom za prihvatanje cevi, otvor (5;24) čiji je prečnik skoro jedan spoljnem prečniku cevi, pri čemu otvor (5;24) sadrži najmanje jedan elastičan zaptivni prsten koji ostvaruje dodir sajednim zidom cevi (4;23), dok izmedju ivice (9;29) otvora i zaptivnog prstena spojnica (1;21) ima žleb (10;30), a za zabravljivanje cevi jedan rastavljiv element (11;31), koji je lokalno blokiran u aksijalnom pravcu, naznačen time, što su spojnica (1;21) i zaptivni prsten (7;28) načinjen od istog materijala u jednoj operaciji livenja, i što je zaptivni prsten (7;28) postavljen na tankom zidu (7a;26) spojnice (1;21) čija elastičnost omogućuje prolaz cevi.-Prijava sadrži još 6 zavisnih zahteva.
Patent RS-50275-B (RS)
Inventor: EDER CLAUDIA
IPC: A61K31/70
Filed: 2002-02-23
Abstract: Jedinjenja formule I naznačena time, što u njoj znači: R1, R2 i R3, nezavisno jedan od drugog H ili acil - ostatak sa 1 do 10 C- atoma; i R4 H ili -C(O)(CH2)n COOH, gde je n jednako 1 do 7; sa izuzetkom da R1 R2, R3 i R4, ne znače svi H; kao i njihove fiziološki prihvatljive soli. Prijava sadrži još 15 patentnih zahteva.
Patent ZA-793642-B (ZA)
Title: Oxime ethers,their preparation and pharmaceutical compositions containing them
Inventor: ZORGE J
IPC: A61K31/426
Filed: 1979-07-18
Abstract: Oxime ether derivatives of the formula (I):   <IMAGE> (I)  wherein Het is a monocyclic heteroaromatic group containing two hetero atoms at least one of which is nitrogen, or a bicyclic heteroaromatic group containing one or two hetero atoms at least one of which is nitrogen, Ar is a phenyl or a 5- or 6-membered monocyclic heteroaromatic group, and R is an alkyl, alkenyl, alkynyl, cyanoalkyl, carbamidoalkyl or aminoalkyl group, or N-oxides thereof, have anti-ulcer activity in the gastro-intestinal tract of mammals.
Patent ZA-801654-B (ZA)
Title: Controlled release compositions
Inventor: EMBREY M
IPC: A61K9/20
Filed: 1980-03-21
Abstract: A controlled release composition comprising a prostaglandin and a polymeric carrier therefor comprising residues having a ratio of number average molecular weight to functionality greater than 1,000 which comprise polyethylene oxide and are cross-linked through urethane groups.
Patent ZA-818752-B (ZA)
Title: Lavatory cleansing blocks
Inventor: BARFORD E
IPC: C11D3/395
Filed: 1981-12-18
Abstract: A free-standing lavatory cleansing block for immersion in the cistern of a lavatory comprises a shaped body (1) formed of a slow-dissolving cleaning composition containing at least one surface active agent and a tablet (2) comprising a bleaching agent embedded in or adhered to the shaped body.
Patent ZA-836450-B (ZA)
Title: 2-nitro-1,1-ethenediamines and processes for their preparation
Inventor: NIEMERS EKKEHARD
IPC: A61K31/44
Filed: 1983-08-31
Abstract: Compounds of the formula   <IMAGE>   in which R1 is an optionally substituted aryl or heteroaryl radical, R2 is an alkyl or alkenyl radical which is optionally substituted by alkoxy or cycloalkyl, or an optionally substituted aryl or heteroaryl radical, and X is an optionally aklyl-substituted methylene radical or a direct bond, but if X is a direct bond R2 is not aryl, or physiologically acceptable acid addition salts thereof, exhibit activity on the circulation system particularly as hypotensive agents.
Patent ZA-845475-B (ZA)
Title: Container closure
Inventor: JONAS THOMAS SYDNEY
IPC: B65D41/34
Filed: 1984-07-16
Abstract: A pilfer-proof closure has an inwardly threaded side wall (7) terminating (at 10) at or just below an annular flange means (17) on the neck of the container (14). Shrunk-in below the flange means (17) is a tamper-evident band (9) joined by a small number (usually 3) of bridges (11, 12, 13). One of the bridges (13) is preferably made weaker than the others.
Patent ZA-847027-B (ZA)
Title: Preparation of ortho-aminobenzotrifluoride
Inventor: CHUPP JOHN PAUL
IPC: C07C17/12
Filed: 1984-09-06
Abstract: This invention relates to a process for the preparation of ortho-aminobenzotrifluoride (OABT) from benzotrifluoride (BTF). The process provides an overall route employing non- isolation of intermediates which can be run smoothly and which results in the preparation of OABT in high yields with less contamination. This process includes a catalytic halogenation step in which BTF is converted to meta-halo BTF and other mono and di-halo isomers of BTF followed by nitration in the same reaction vessel under conditions which do not favor nitration of the di-halo isomers of BTF to produce a mixture which predominates in 5-halo-2-nitro BTF. In the final step the 5-halo-2-nitro BTF present is reduced and hy- drodehalogenated with H, in the presence of a catalyst to form OABT. Recyclable BTF is also obtained from the final reaction.
Patent ZA-852322-B (ZA)
Title: Apparatus for introducing dosed quantities of pulverulent materials into a pneumatic propulsion fluid
Inventor: LEGILLE EDOUARD
IPC: B65G53/46
Filed: 1985-03-27
Abstract: A device for introducing dosed quantities of pulverized solid materials into a carrier gas stream is presented. The device is particularly suitable for injecting solid fuels into a shaft furnace during metal refining. The device comprises a housing having oppositely disposed inlet and outlet radial apertures therethrough. The inlet radial aperture is connected to a container holding pulverized materials. Coaxial inner and outer sleeves, at least one of which is capable of rotation, are located within the housing. Upon rotation of a sleeve, pairs of oppositely disposed slots provided on each sleeve will align and overlap with each other and with the pair of oppositely disposed apertures to define variable sized passages. A cheek positioned on one end of the housing has a cylindrical extension portion which extends axially into the inner sleeve and extends across the inlet and outlet apertures. The extension portion includes a channel therethrough which is axially aligned with the first and second aperture means and is also connected to a source of pressurized fluid.