baber/WOPTO huggingface dataset:
Patent HR-P20040364-B1 (HR)
Inventor: REICHERS HARTMUT
IPC: C07D403/12
Filed: 2004-04-22
Abstract: Derivati karboksilne kiseline formule (I) koji sunaznačeni time da R 	predstavlja tetrazolil ili COOH grupu, a drugi supstituenti imaju značenja kako slijedi: R2 	je C1-C4-alkil, C1-C4-alkoksiX 		jedušik ili CR14, gdjeR14	je vodik ili alkil, ili CR14 formira zajedno sa CR3 4- ili 5-članski alkilenski ili alkenilenski prsten kao što se spominje uprimjeru -CH2-CH2-CH2-, -CH=CH-CH2-, u kojem u svakom slučaju metilenska grupa može biti zamijenjena kisikom ili sumporom kao npr. -CH2-CH2-O-, -CH=CH-O-, -CH2-CH2-CH2-O-, -CH=CH-CH2O-, a posebice vodikom -CH2-CH2-O-, -CH(CH3)-CH(CH3)-O-, -C(CH3)=C(CH3)-O-, -CH=C(CH3)-O- ili -C(CH3)=C(CH3)-S; R3 	je kao što je navedeno za R2 C1-C4-alkil, C1-C4-alkoksi ili C1-C4-alkiltio ili je pak vezan na R14 kao što je nevedeno naprijed, kada se dobije 5- ili 6-članski prsten; R4 	i R5 su fenil (jednak ili različit), koji može biti supstituiran sa jednim iliviše slijedećih radikala: halogen, dušik, hidroksil, C1-C4-alkil, C1-C4-alkoksi, C1-C4-alkiltio iliR4 	i R5 su fenilne grupe koje su povezane zajednou orto pozicijama preko direktne veze, preko metilena, etilena ili etenilenske grupe, atoma kisika ili sumpora, preko SO2-; NH- ili N-alkilne grupe; R6 	je C1-C8-alkil, C3-C6-alkenil ili C3-C8-cikloalkil, s tim da svaki od rečenih radikala može bitisupstituiran jednom ili više puta sa: halogen, hidroksil, nitro, cijano, C1-C4-alkoksi, C3-C6-alkeniloksi, C1-C4-alkiltio; fenil ili naftil, s tima da svaki od njih može biti supstituiran s jednim ili više slijedećih radikala: halogen, nitro, cijano, hidroksil, amino, C1-C4-alkil, C1-C4-haloalkil, C1-C4-alkoksi, C1-C4-haloalkoksi, fenoksi, C1-C4-alkiltio, C1-C4-alkilamino ili C1-C4-dialkilamino; 5- ili 6-članska heteroaromatska jedinica koja sadržava jedan atom dušika i/ili jedan atom sumpora ili kisika, koji može nositi jedan do četiri atoma halogena i/ili jedan do dva slijedeća radikala: C1-C4-alkil, C1-C4-haloalkil, C1-C4-alkoksi, C1-C4-alkiltio, fenil, fenoksi ili fenilkarbonil, s time da je moguće ga fenil radikali mogu nositi jedan do pet atoma halogena i/ili jedan do tri slijedeća radikala: C1-C4-alkil, C1-C4-haloalkil, C1-C4-alkoksi i/ili C1-C4-alkiltio; Y 	je sumpor, kisik ili jednostruka veza; Z 	je sumpor, kisik, -SO-, SO2- ili jednostruka veza. Patent sadrži još 15 patentnih zahtjeva.
Patent JO-2347-B1 (JO)
Title: Diffusion driven desalination apparatus and process
Inventor: KLAUSNER JAMES F
IPC: C02F1/14
Filed: 2003-02-17
Granted: 2006-06-28
Abstract: A diffusion driven desalination apparatus and related method includes structure for receiving a heated water stream and creating at least one region having a thin film of water and structure for forcing a low humidity air stream over the thin film of water, wherein water from the thin film of water evaporates and diffuses into the air stream to create a humidified air stream. A diffusion tower including at least one plenum can be used to create and transfer the humidified air stream. At least one condenser, such as a direct contact condenser, condenses the humidified air stream, wherein purified water is produced. Waste heat from a power plant can be used to provide the heated water stream and power plants can use the waste heat generated to inexpensively provide purified water.
Patent JO-P20120346-B1 (JO)
Title: Compounds for adhesion treatment and prevention, compound-related pharmaceutical compositions and methods for the prevention and treatment of adhesions
Inventor: SHURYGINA IRINA ALEKSANDROVNA
Filed: 2012-11-19
Granted: 2023-09-17
Abstract: 0
Patent JO-P20130213-B1 (JO)
Title: 5-ht3 receptor antagonists
Inventor: HOPKINS MARIA
IPC: C07C53/18
Filed: 2013-07-11
Granted: 2021-08-17
Abstract: The present invention provides 5-HT3 receptor antagonists of Formula (I): which are useful for the treatment of diseases treatable by inhibition of 5-HT3 receptor such as emesis, pain, drug addiction, neurodegenerative and psychiatric disorders, and GI disorders. Also provided are pharmaceutical compositions containing such compounds and processes for preparing such compounds.
Patent KR-790000201-B1 (KR)
Title: Method for preparing novel guanamide derivatives
Inventor: AOYAKI YOSHIAKI
Filed: 1974-12-30
Granted: 1979-04-04
Abstract: Guanamides (II ; R = halogenophenyl), nitrophenyl, lower alkylphenyl or pyridyl), which are useful as antiinflammatory and antiulcer, were prepd. by reaction of aromatic derivs. (I ; R = halogenophenyl, nitrophenyl, lower alkylphenyl or pyridyl, Z = lower alkoxy or amino) with biuret in the presence of alk. catalyst. Thus, II were prepd. by refluxing Na metal and benzoic ester or nicotinic ester in MeOH and acidifying the resultant products.
Patent KR-820001326-B1 (KR)
Title: Method of improving the current supply of electrolysis cells aligned in a lengthwise direction
Inventor: MOREL P
IPC: C25C3/16
Filed: 1978-01-19
Granted: 1982-07-23
Abstract: This invention relates to the electrolysis cells whose plates are lengthwise arranged in order to improve the current supply for the purpose of aluminium manufacturing by electrolysis of alumina.  The cathode bars of the cell are devided into at least two groups with same number of bars.  A method for compensating the induced magnetic fields of adjacent rows of electrolysis cells is considered.  The current is fed so as to reduce the interference which is generated by the induced magnetic field.
Patent KR-810001426-B1 (KR)
Title: Hydrocarbon conversion with selectively sulfided acidid multimetallic catalytic composite
Inventor: ANTOS G
IPC: B01J27/04
Filed: 1978-05-06
Granted: 1981-10-21
Abstract: A process for converting a hydrocarbon comprising a porous carrier material contg., on an elemental basis, 0.01-2 wt.% Pt Group metal, 0.01-2 wt. % Re, 0.01-10 wt. % halogen ; wherein the Pt or Pd, Rh and Re are uniformly dispersed throughout the porous carrier material; wherein subatantially all of the Re is present in a sulfided state and the mixing ratio of Re:S is 0.05:1 to maintain the sulfided state of Re in hydrocarbon conversion process.
Patent KR-830001864-B1 (KR)
Title: 향상된 안정도를 갖고 측정표시를 주기적으로 발생시키는 장치
IPC: G01B7/00
Filed: 1980-01-30
Granted: 1983-09-15
Abstract: 내용 없음.
Patent KR-840001158-B1 (KR)
Title: Fluid fitting
Inventor: CHRISTIANSON ROGER D
IPC: B21D39/04
Filed: 1980-04-23
Granted: 1984-08-11
Abstract: The fitting joins two tubular memvers in a fluid-tight relationship. It has a sleeve whose outer end portions have ridges on the inner surfaces to retain a tube once the fitting is compressed inwardly around the tube. The retention areas include sealing elements on the inner wall of the fitting to form a fluid-tight bond with the tubular member receiving the fitting. Intermediate areas separate the end portion and the sealing areas, and a central portion has an increased wall thickness that provides greater strength in that area.
Patent KR-840000010-B1 (KR)
Title: Method of preparing for muranyldipeptide derivatives
Inventor: SHIBA TETSUO
IPC: C07H15/22
Filed: 1980-06-20
Granted: 1984-01-25
Abstract: Muramyldi-peptide derivatives (I) are prepared from compound (III) reacted with active ester of aliphatic acid, or from compound (II) reacted with alkyl-diamine (H2N-C(R1)H-(CH2)n-NHCO-A) of alkylamine (H2N-A) or amino group acyllized; where x= L-alanine, L-cerine, L-barine or glycine; Y= -NH-A or -NHC(R1)H(CH2)n-NHCO-A (where R1 = h atom, C1-C6 alkyl, carboxamide or carboxyl group, n = 1-6, and A = C7-C30 chained aliphatic hydrocarbon); and acy1 = acy1 group of C2-C6 aliphatic carboxylic acides.
Patent KR-840000739-B1 (KR)
Title: Process for preparing diphenyl ether
Inventor: GROVE WILLIAM S
IPC: A01N37/10
Filed: 1980-08-05
Granted: 1984-05-31
Abstract: The title compds. I (A=nitro; X=H, halo; Y=H, halo, CF3, cyano, C1-C4 alkyl; Z=0, s; R=alkylene, C1-C3 monosubstituted alkylene; R1=H, C1-C10 alkyl, C3-C8 cycloalkyl, Ph, alkylalkoxy-, cyano-, nitro-, CF3-, halo-) were prepd. and exhibited herbicidal activity.  Thus, 1.18g ethyl lactate in 30mL benzene and 0.79g pyridine were refluxed with 3.79g 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrobenzoyl chloride to give 2.89g 1'-(ethoxycarbonyl) ether-5-(2-chloro-4-trifluoro-methylphenoxy)-2-nitrobenzoic acid.
Patent KR-850000470-B1 (KR)
Title: Process for preparing azetidine derivatives
Inventor: DEVLIN BARRY ROY JOHN
IPC: C07D205/04
Filed: 1980-11-20
Granted: 1985-04-08
Abstract: Azetidines I [X = CH2, CHR, CR2(R = halo, alkyl, alkoxy); Y = CHR, CR2, CH CO2H; Z = CH2, CHR, CR2, CH CO2H  were prepd. Thus, 4-methyl- 2-tetrahydrofuranone was brominated and treated with PhCH2OH to give BrCH2CHMeCHBrCo2H, which was treated with Ph2CHNH2 followed by hydrogenolysis, to give 3-methyl-2-carboxyazetidine derivatives. At 1000 ppm azetidine derivs. gave 69% inhibition of grain set in wheat.
Patent KR-830001706-B1 (KR)
Title: 가라기난과 로커스트빈검의 혼합추출물 제조법
Filed: 1981-10-27
Granted: 1983-08-31
Abstract: 내용 없음.
Patent KR-850000547-B1 (KR)
Title: Process for cryogenic shot-blasting
Inventor: MAHOTOR TOMAS ELSWORS
IPC: B08B7/00
Filed: 1982-02-25
Granted: 1985-04-26
Abstract: A shot-blasting method in the low temperature is characterized by eliminating in low temperature selected substance on the group of paint, other materials and their mixture from a material object by an suitable medium. This method is composed of fourth steps followed. The first step transfers the selected substance through applied part maintained in the state of low temperature, the second step passes a freezing material through applied part, the third step throwes the above substance in high speed in applied part and the last step removes object which completely eliminated the above  selected substance from applied part.
Patent KR-850000525-B1 (KR)
Title: Hair cutting device
Inventor: KANZAWA YUKIO
IPC: B26B19/20
Filed: 1982-03-10
Granted: 1985-04-17
Abstract: This hairdressing appliance is established on same plane electromotive clippers and the section of a fixing cutting blade in the case. Also, this is composed of the case having elastic parts holding a function that is retaining to original position clippers moved connecting the case and clippers and electromotive parts gearing the displacement of clipppers and thr rotation of drum by connecting a rotatory drum and clippers. This hairdressing appliance can changes related position for the case of clippers by rotating a drum.
Patent KR-870001936-B1 (KR)
Title: Preparation process of new steroid derivatives
Inventor: TUSI CHANG GETORGI
IPC: C07J51/00
Filed: 1982-06-11
Granted: 1987-10-22
Abstract: Steroid derivs. of formula(I) are new.  Reacting (II) with hydrating agent capable of free ketone to give (I'A), with ketaling agent to (I'B), with acid to (I).  In the formula, R'= C1-18  org. gp. contg. at least 1 N, P or Si atom at near 11carbon; R2=C1-8 hydrocarbon; X may be substituted; A is freely to ketal, CH(OH), C=NOH, C=NOalK3(alk3=C1-8 alkyl or C7-15 aralkyl); B and C are interbonded by double or epoxide; K=ketal, thioketal, oxime or methyloxime.
Patent KR-850001776-B1 (KR)
Title: Rear suspension system for two-wheeled vehicles
Inventor: FUKUCHI KIYOSHI
IPC: B62K25/26
Filed: 1982-10-18
Granted: 1985-12-18
Abstract: On an automatic two wheel vehicle, wheel vibration is alleviated through a shock-absorber. Although the back wheel can vibrate up and down while traveling, vibration is effectively absorbed by the bumper and the shock-absorber. And so shock and vibration from the back wheel(19)  is not transmitted directly to(19), and the feeling of riding in a car is promoted. The foremost composed of an electric ring band spring established between the real poke(17) and the body frame. The elastic band spring(24) is composed of numerous elastic bands (24a,24b) which stand in a row. The coefficients of the numerous bands (24a,24b) are different.
Patent KR-880001768-B1 (KR)
Title: Apparatus for forming blown films
Inventor: IKEYA NOBUSIKE
IPC: B29C48/10
Filed: 1982-10-28
Granted: 1988-09-13
Abstract: Appts. for forming a blown film comprises an inflation forming die having a circular slit, an air ring surrounding the slit provided with an air-flow passage leading to an air ejecting slit, the air ejecting slit being defined by an outer lip having a tapered surface, the inner dia. there of increasing in the direction of withdrawal of a cylindrical film extruded through the circular slit, and an inner lip disposed closes to the die than the outer lip.  The air press. is reduced in the space between the inner lip and the cylindrical film inwardly of the air ejecting slit by an air suction passage one end of which opens in the space and the other end of which opens in the air flow passage in the air ring.
Patent KR-860000137-B1 (KR)
Title: Water-dispensable coating composition for release the spatter from metal welding
Inventor: YANG SONG-MIN
IPC: C09D5/02
Filed: 1983-02-10
Granted: 1986-02-26
Abstract: For metal welding, the title composition prevents spatter from adhesiving. The mixt. consists of 5 - 35 wt. parts of drying oil, containing iodide; 5 - 35 wt. parts of monoprotic acid; 5 35 wt. parts of polyprotic acid; 5 - 35 wt. parts of alcohol; 1 19 wt. parts of polyethylene glycol and polypropylene glycol; 1 19 wt. parts of an epoxy compd; proper amounts of a counteragent and a diluent is prepd.. This mixt. is esterificated at 170-260 C, amd neutralized at pH6 - pH9, and then diluted with water to give the title composition.
Patent KR-900005494-B1 (KR)
Title: Snap hook
Inventor: BAKER JOHN A
IPC: F16B45/02
Filed: 1983-06-10
Granted: 1990-07-30
Abstract: A snap hook and a retainer in combination therewith, the snap hook being integrally formed and comprising: a bi-ended base portion, an elongate tapered blade portion, a re-entrant protion and a latch portion; a first end of the base portion being integral with the blade portion through the re-entrant portion thereby providing the snap hook with an aperture intermediate the base portion and the blade portion, the blade portion having at least one pair of opposed sides transverse to and uniformly converging outwardly from the re- entrant portion, the aperture forming an elongate mouth, the mouth having two spaced integrally formed lips at the entrance thereof, and a second end of the base portion being integral with the latch portion thereby providing the snap hook with a corner for use as a hook.
Patent KR-890000146-B1 (KR)
Title: Energy recuperation centrifuge
Inventor: SCHLEGEL RAYMOND F
IPC: B04B9/06
Filed: 1983-08-26
Granted: 1989-03-08
Abstract: The plates are formed as external conical flanges on the exterior of the inner bowl with which they are integral and thus rotate together.  The clarified liq. is discharged from the annular space between the bowls via an impact turbine rotor fixed coaxially to the inner bowl. The turbine discharges liq. through tangential ejectors fixed to the outer bowl and forming a reaction turbine, the final speed of liq. from the centrifuge being practically zero.  Pref. the reaction turbine ejector jets impinge on fixed blades which direct the liq. to the outlet.  Pref. the solid particles are extracted by a conveyor screw.  The particles are pushed along the inside of the cylindrical wall of the outer bowl.
Patent KR-900004970-B1 (KR)
Title: Hinge for vehicle seatby back-rest having adjustable inclination means
Inventor: WAHLMANN ERNST
IPC: A47C1/025
Filed: 1983-09-15
Granted: 1990-07-16
Abstract: A hinge assembly comprising a fixed hinge part, a hinge part pivotally movable relative to the fixed hinge part about a pivot axis, an internally toothed ring defined in one of the hinge parts, the other hinge part having a portion overlying the plane of the toothed ring, at least three toothed detents each pivotally mounted by means of a respective journal rigidly connected to the portion of the other hinge part so that the detent is disposed with the plane of the internally toothed ring for pivotal movement between a position in which it engages the internally toothed ring and a position in which it does not engage the internally toothed ring.
Patent KR-890000650-B1 (KR)
Title: Matrix composition for transdermal prescription apparatus and it's
Inventor: ENSCORE DAVID J
IPC: A61K35/08
Filed: 1984-04-30
Granted: 1989-03-22
Abstract: A matrix compn. for transdermal drug administration contains a mineral oil, polyisobutylene (I) and at least 6% colloidal SiO2.  The ratio of the oil to the polymer is at least 1.0 and the viscosity of the mixt. is at least 1.5X106 Pa.  An adhesive compn. is prepd. contg. 47% mineral oil, 27.8% low mol. wt. (I), and 22.2% high mol. wt. (I)[mineral oil: (I) is 0.94  and 3% clonidine.  Addn. of colloidal SiO2 to this system increased the viscosity.
Patent KR-890003474-B1 (KR)
Title: Lateral bipolar tr forming on soi plate
Inventor: NAKANO MOTOO
IPC: H01L29/73
Filed: 1984-09-03
Granted: 1989-09-21
Abstract: The transistor formed in an Si layer on an insulating substrate comprises: a base region of first type formed in the Si layer emitter region of second type formed in the Si layer and sharing a junction with the base; a collector region of second type formed in the Si layer on the opposite side of the base and sharing a junction with the base; and a base electrode of first type material being insulated from the emitter and collector.  The base, emitter and collector are in surface-to-surface contact with the underlying insulator of the substrate.  The base region pref. has a concave vertical doping profile with a min.  value at a portion between the base electrode and the insulator.
Patent KR-870001251-B1 (KR)
Title: Process for preparing cephalosporin derivatives
Inventor: IMAIJUMI HIROYUKI
IPC: C07D501/56
Filed: 1984-10-10
Granted: 1987-06-29
Abstract: Cephalosporin, useful as antimicrobial agent, was prepd. Thus, 3.36g of reagent obtained from a mixt. contg. boron trifluoride in sulfolane, methylene chloride and 2-(2aminothiazol-4-yl)-2-(syn)- methoxyiminoacetamide was reacted with 4.10g pivaloyloxymethyl-7- amino-3-(5-methyl-1,2-3,4-tetrazol-2-yl) methyl-  3-cephem-4- carboxylate in 41 ml ethylacetate at room temp. for 3h to give 7.18g pivaloyloxymethyl 7-[2-(2-aminothiazol -4-yl)-2-(syn)- methoxyiminoacetamide -3-(5-methyl-1,2,3,4-tetrazol -2-yl) methyl- 3-cephem-4-carboxylate.
Patent KR-880000051-B1 (KR)
Title: Boiler
Inventor: HONDA MASHAHIRO
IPC: F22B21/06
Filed: 1984-11-22
Granted: 1988-02-20
Abstract: The steam generating boiler comprises a vertical cylindrical housing (1) with a cylindrical water chamber (2) a the bottem, an amular steam chamber(1) a the top and on eccentric combustion chamber (3) defined by circumferentially spaced water tubes between them.  The crescent-section space between the housing wall(3) and the combustion chamber tube wall is enclosed by a wall (5) of spaced vertical water tubes.  This space forms a passage (12,13) for combustion gas containing steam tubes(4) and has a portion bunded by parts of the tube wall (9) and the combustion chamber tube wall respecpively containing down-flow water tubes.  The passage (12,13) contains a horizontal partition (8) not extending into the drop tube portion so that the combusion gas first passes through the lower part (12) and rises alongside the drop tubes to enter into the upper part(13) which connects to lateral flue outlet(11).
Patent KR-890003789-B1 (KR)
Title: Process for preparing salts of oxazuphosphorine derivatives
Inventor: ENGEL JURGEN
IPC: A61K31/675
Filed: 1985-02-28
Granted: 1989-10-04
Abstract: Salts of oxazaphosphorine derivs. are prepd. by reacting a cpd. of formula (I) or a salt of the cpd. of (I) with a basic cpd. of formula (II).  In the formulas, A is -S-alk-SO3H; alk is a residual gp. of C2-4 alkylene; R4 is hydroxy or amine; R6 is H or C1-6 alkyl.  The derivs. are used as an anticancer agent.
Patent KR-900006489-B1 (KR)
Title: Chrominance signal processing devices
Inventor: KATOO SHIROO
IPC: H04N9/83
Filed: 1985-04-16
Granted: 1990-09-01
Abstract: A variation component of a carrier angular frequency from a reference angular frequency signal which the carrier chrominace signal has by an APC circuit. Two reference angular frequency signals, the angular frequency difference signal and other similar signals which give necessary performance as a chrominance signal processing circuit are added or subtracted in the states of the angular frequency and phase signals (25). A phase amplitude converter(30) obtains a frequency converting signal by converting the obtained phase signal to an amplitude signal. The first angular frequency difference signal is obtained by comparing the phase of a burst signal in the carrier chrominance signal with that of the phase comparison signal.
Patent KR-910003552-B1 (KR)
Inventor: TAIGO YASUHITO
IPC: B22F1/00
Filed: 1985-06-19
Granted: 1991-06-05
Abstract: 내용 없음.
Patent KR-900005993-B1 (KR)
Title: Control apparatus for an electric railwey vehicle
Inventor: GODAKE GAZYOSI
IPC: B60L3/00
Filed: 1986-03-27
Granted: 1990-08-20
Abstract: A current collector (6) slidably contacts a contact wire (2) to pick- up DC to supply the drive motor (14), a chopper (20) controlling the current supplied by varying a duty ratio of operation. A controller (32) controls the duty ratio in accordance with the deviation between a desired motor current pattern and an actual motor current. A current detector (34) produces an output signal when the current collection is sufficiently reduced that a reduction of the commutation ability of the chopper occurs. A voltage detector (36) generates a signal that gradually reduces the desired motor current pattern at a predetermined rate when the current detector produces the output signal.
Patent KR-900002423-B1 (KR)
Title: Torque controller for differential actuator
Inventor: MORI NAODAKE
IPC: H02P5/747
Filed: 1986-06-18
Granted: 1990-04-14
Abstract: The rotation control apparatus includes two induction motors and a differential mechanism for producing a constant torque on its output shaft based on the differential speed of the induction motors.  The apparatus includes two inverters each located between one of the induction motors and a common power source for the induction motors and having individual voltage/frequency output characteristics.  The inverters set separately the voltage/ frequency output characteristics of power supplied to the induction motors so as to control the speed of the induction motors separately.
Patent KR-900003686-B1 (KR)
Title: Optical recording/reproducing apparatus
Inventor: TANAKA SINICHI
IPC: G11B7/135
Filed: 1986-11-26
Granted: 1990-05-30
Abstract: The head includes a light gererator for producing divergent light beam and a collimation device positioned for receiving divergent light beam from light generating device and for collimating divergent ligh beam into a parallel light beam. The collimation device has lens for converting divergent light beam into a light beam which diverges or converges at a smaller angle than the angle of divergence of divergent light beam. A second lens is provided for converting light beam from first lens into parallel light beam. A convergence device is positioned for receiving parallel light beam and for converging parallel light beam to focus on the recording medium.
Patent KR-900003870-B1 (KR)
Title: Air flow control device
Inventor: AOKI KATSUYUKI
IPC: G05D23/19
Filed: 1987-06-10
Granted: 1990-06-02
Abstract: The air flow control device includes a compressor, an outdoor side heat exchanger, an expander and a room side heat exhcnanger in sequence. A room side unit with an upper and lower outlet ports contains a room side heat exhcanger. Air-blowing fans are disposed in the room side unit so as to face the upper and lower outlet ports, respectively. A covering member is positioned at one of the outlet ports so as to open and close the corresp. outlet port. A device controls the opening and closing operations of the covering member.