baber/WOPTO huggingface dataset:
Patent FR-2558378-B1 (FR)
Inventor: NEIGER HENRI JACQUES CHARLES
IPC: A63B21/00
Filed: 1984-01-20
Granted: 1986-05-23
Abstract: The exercise apparatus includes a motor-reduction gear unit (10, 11) controlling an input shaft (20), and mounted on a frame (1). A drum (50) receives a cable (5) at the end of which there is placed a detector (155) and then a handle (56). Between the shaft (20) and the drum (50) there are mounted in parallel firstly a freewheel transmission (36) and, secondly an electromagnetic powder clutch (35). Various pre-adjusted control values for exciting the clutch (35) enable accurate adjustment of the apparatus, in particular for exercises of the "servo-controlled work", "static work", or "direct work" types, to be accompanied by "rest" phases.
Patent FR-2568858-B1 (FR)
Inventor: PETIT MAURICE
IPC: B65D85/42
Filed: 1984-08-08
Granted: 1987-02-06
Abstract: 1. Disposable plastic container for the packaging of ampoules filled under vacuum, in which the ampoules are arranged vertically side by side, the tips of the ampoules being supported on a square base (1), the container having an encircling member (2) in the vicinity of the middle of the ampoules slightly wider than the base (1) and oblique uprights (3-6) connecting the base (1) to the encircling member (2), characterized in that no two adjacent sides of the container have the same number of uprights, and that the uprights are angular and comprise a first part (9) in the vicinity of the base (1) and a second part (10) in the vicinity of the encircling member (2), the first part being more inclined to the vertical than the second.
Patent FR-2615509-B1 (FR)
Inventor: SOLLADIE GUY
IPC: C07F7/00
Filed: 1987-05-21
Granted: 1989-08-18
Abstract: According to this process a stereospecific reduction of the two hydroxyl groups of an etherdiol is carried out using a mixture (titanium trichloride, lithium aluminium hydride) at a temperature of approximately between 5 DEG C and 40 DEG C and the ether obtained is optionally converted into vitamin A, retinal or retinoic acid. Application to the synthesis of all-trans compound taken from the group consisting of vitamin A and its ethers, retinal and retinoic acid and their 13-cis isomers.
Patent FR-2619261-B1 (FR)
Inventor: ELLUIN PATRICE
IPC: E04B5/48
Filed: 1987-08-03
Granted: 1991-12-06
Abstract: Boxes (14 to 21) are embedded in the platform (1) and connected respectively to sheaths (30 to 37) which are also embedded in the platform (1) and emerge from the latter into the technical room (7); the boxes (14 to 21) are disposed according to a specified plan so that, depending on the requirement, they may be located, opened and engaged in the corresponding sheaths (30 to 37) of the electricity transport cables or the like. <??>Thus a great flexibility is available for a reduced installation cost.
Patent FR-2684911-B1 (FR)
Title: Procede de fabrication d'un moule pour former des denivellations en óoeil de poisson sur une lentille.
Inventor: OTSUKA YOSHINORI
IPC: B29D11/00
Filed: 1992-12-14
Granted: 1994-11-25
Abstract: Procédé de production a partir d'une ébauche de matrice d'une empreinte utilisable pour former, sur une optique pourvue d'une zone courbe, une pluralité de cellules en œil de poisson, divisées par des lignes de séparation en des sections globalement assimilables à des parallélogrammes, ladite empreinte étant divisée en une pluralité de parties concaves (C2, C2,...) correspondant aux cellules en œil de poisson respectives par un premier groupe de lignes de séparation (8) s'étendant dans une première direction (A) et par un second groupe de lignes de séparation (9) s'étendant dans une seconde direction (B). On utilise des cellules en œil de poisson sur les feux arrière d'une automobile.
Patent FR-2726284-B1 (FR)
Inventor: MOINE VIRGINIE LEDOUX
IPC: C12P21/00
Filed: 1994-10-31
Granted: 1996-12-27
Abstract: PCT No. PCT/FR95/01426 Sec. 371 Date Apr. 30, 1997 Sec. 102(e) Date Apr. 30, 1997 PCT Filed Oct. 27, 1995 PCT Pub. No. WO96/13571 PCT Pub. Date May 9, 1996A treatment for stabilizing wine against tartaric acids and proteins by adding mannoproteins extracted from yeast walls by enzymatic digestion, is disclosed. A method for carrying out the treatment by extracting mannoproteins from yeast by enzymatic digestion, and the resulting mannoprotein, are also disclosed.
Patent FR-2730392-B1 (FR)
Inventor: GASSIES CHRISTOPHE
IPC: B41F17/00
Filed: 1995-02-15
Granted: 1997-03-14
Abstract: PCT No. PCT/FR96/00228 Sec. 371 Date Oct. 2, 1996 Sec. 102(e) Date Oct. 2, 1996 PCT Filed Feb. 13, 1996 PCT Pub. No. WO96/25066 PCT Pub. Date Aug. 22, 1996A gambling chip includes a decorative pattern provided on at least one side thereof and on an edge thereof. The pattern is formed by pressure pad marking, i.e., applying an ink pattern to a deformable head and stamping the pattern on the chip. Repeated stamping of different color inks can create different patterns. A layer of varnish is also applied to the chip, either between ink layers or above or below all of the ink layers.
Patent FR-2743812-B1 (FR)
Inventor: DOGUET LOIC
IPC: C08G77/06
Filed: 1996-01-24
Granted: 1998-02-20
Abstract: A method for preparing polyorganosiloxanes by hydrolysing organohalosilanes of formula (I) RaR<1>bSiXc, wherein each of R and R<1>, which are the same or different, is hydrogen or straight or branched C1-6 alkyl, aryl, alkylaryl or aralkyl, X is a halogen, and a + b + c = 4 and 0 < c < 4. The method essentially comprises a series of at least three hydrolysis steps (1, 2, 3) in which the reaction medium is capable of exerting an increasing hydrolysing force on the organohalosilanes (I), and optionally at least one coalescence step (4). Step (1) involves pressure hydrolysis in the presence of a saturated aqueous hydrogen halide solution S1 and at the same temperature and pressure as the reaction medium.
Patent FR-2758730-B1 (FR)
Inventor: GUIGUET JACQUES
IPC: A63C5/12
Filed: 1997-01-27
Granted: 1999-02-26
Abstract: The snowboard comprises a lower assembly (1) constituting the sliding base plate (2) with metalled edges (3,4). An upper assembly (5) comprises an external layer forming the upper face (6) and the edges (7,8). A filling core (10) between the upper and lower assemblies is composed of expanded polyurethane foam. A reinforcing element (15,16) is placed under the external layer and/or the base plate and impregnated with a reticulated resin. An intermediate sticking layer (17, 18) is interposed between the reinforcing element and the core. The intermediate sticking layer is constituted by a porous sheet coated and sealed on each face with a latex based solution. The face in contact with the core is impregnated with polyurethane foam and the face in contact with the upper assembly is impregnated with reinforcing resin.
Patent FR-2766203-B1 (FR)
Inventor: LANGLOIS BRUNO
IPC: C09K8/20
Filed: 1997-07-17
Granted: 2002-05-24
Abstract: The invention concerns guar-free fluids capable of being used in oil mining and containing de-acetylated xanthane gum in the form of a polypentamer, combined with at least one compound increasing the medium ionic strength. The invention also concerns the use, as filtrate reducer with improved properties, of de-acetylated xanthane gum, in the form of a polypentamer, combined with a compound increasing the medium ionic strength and a standard filtrate reducer.
Patent FR-2774597-B1 (FR)
Inventor: POZZO MICHEL
IPC: A61L9/12
Filed: 1998-02-10
Granted: 2000-08-25
Abstract: The invention concerns a volatile substance diffuser (102) comprising a body (104) with an aperture (111), and a reservoir (120) of product, comprising a volatile substance, the reservoir (102) being mounted mobile in the body (104) between a diffusing position enabling a gas to circulate through the product, then through the aperture (111) and a closed position wherein the product is isolated from the aperture (111), the reservoir and the body having respective surfaces (122,116) extending opposite each other. One of the surfaces (122) is spherical.
Patent FR-2784036-B1 (FR)
Inventor: ARTUS JEAN PIERRE
IPC: A63C9/08
Filed: 1998-10-06
Granted: 2000-12-01
Abstract: The boot (3) binding for a snow board (2) has a section (1) fixed to the boot, a second section (19) fixed to the board and an adaptor (14) connecting these. The boot section and adaptor are releasable under excess load. The board section and adaptor are fixed together automatically and manually releasable.
Patent FR-2770605-B1 (FR)
Inventor: GIMMLER HELMUT
IPC: B60W30/18
Filed: 1998-10-30
Granted: 2003-06-20
Abstract: A method for driver-behavior-adaptive control of a variably adjustable motor vehicle accessory. One or more parameters indicative of driver behavior are sensed and a pertinent driver behavior is ascertained therefrom. Accessory adjustment is performed variably as a function of the driver behavior that was ascertained. The driver behavior is ascertained in terms of a long-term driving manner component, and a short-term dynamic demand component and/or a steady-speed request component. Accessory adjustment is performed, if a short-term dynamic demand exists, in accordance with an adjustment characteristic having a dynamic level corresponding at least to that dynamic demand. When a constant-speed request exists, accessory adjustment is performed in accordance with a relevant low-dynamic adjustment characteristic. Otherwise, accessory adjustment is performed in accordance with an adjustment characteristic determined by the long-term driving manner component.
Patent FR-2791553-B1 (FR)
Inventor: AUGOYARD MARC
IPC: A61F2/38
Filed: 1999-04-01
Granted: 2001-07-06
Abstract: Knee prosthesis comprises U-shaped femoral prosthetic element (1), and tibial prosthetic element (2). Femoral element has bo (30) with latch pin (31) attaching to trochlea and having cell (32) from where convex projection (33) develops. Tibial element h protuberance defining boss (40) attached to concave sliding ramp (41). Convex projection is defined by transversal radius of curvature and sagittal curvature.
Patent FR-2794847-B1 (FR)
Inventor: BOUVIER DANIEL
IPC: F23Q3/00
Filed: 1999-06-08
Granted: 2001-07-20
Abstract: Two parallel electric circuits are supplied by a battery (1) via common control switch (2). One circuit energizes fuel valve (4) operating coil (3), other igniter circuit, which terminates in spark electrode (16), on insulated support (11) at bottom of burner (9). Series ignition circuit comprises oscillator (5), power unit (6) and step-up transformer (7), whose output (10) is connected to igniter (16). Fuel line (8) delivers fuel via control valve (4) and heat exchanger at base of which it enters, near air delivery point. Turbulence is created in fuel mixture flow by steel sphere (12) mounted near igniter. An independent claim is also included for the burner.
Patent HR-P970251-B1 (HR)
Inventor: GRBAVAC KAZIMIR
IPC: F02B71/04
Filed: 1997-05-12
Abstract: Motor sa slobodnim klipovima, s, naznačen time, dva klipa (3,4) koji su medusobno čvrsto spojeni s jednom ili više klipnjača, koje osciliraju unutar jednog cilindra (2); jednim cilindrom (2) koji je na svojim suprotnim krajevima opremljen glavama cilindra (7), u kojim se klipovi (3,4) obostrano zagrijavaju, jednom pregradom (5) koja odvaja cilindar (2), kroz koju se aksijalno provode klipnjače (6); jednim radnim medijem koji se nalazi na poleđini klipova (3,4), koji gibanjem klipova (3,4) prekopovratnih ventila (8,9) pogoni agregat (12). Patent sadrži još 2 patentna zahtjeva.
Patent HU-226254-B1 (HU)
Title: Genetically engineered cell culture adapted infections bursal diseases virus (ibdv) mutants
Inventor: MUNDT EGBERT E
IPC: A61K39/12
Filed: 2000-03-03
Abstract: The present invention relates to a method for the adaptation of infectious bursal disease viruses (IBDV) to growth in CEF cell culture. Changing the codons for amino acid residues 253 (Gln) and 284 (Ala) to 253 (His) and 284 (Thr) allowed bursa adapted Classical and Variant-E IBDV to grow in CEF cell culture. For GLS IBDV only a change of the codon for amino acid residue 284 was necessary.
Patent HU-222420-B1 (HU)
Title: Verically adjustable shutter hinge plate
Inventor: HOETZL MANFRED
IPC: E05D7/00
Filed: 1996-01-26
Abstract: A vertically adjustable shutter hinge plate comprises in the hinge plate sleeve (5) a hinge plate bush (8) which is rotationally mounted but axially removable and which has an external thread (11) onto which an adjusting bush (12) is screwed. Since the adjusting bush (12) is supported on an inner annular surface (7) of the hinge plate sleeve (5), the adjusting bush (12) remains stationary and raises and lowers the hinge plate bush (8) and therewith the shutter hinge plate and the shutter (4) itself. A projection (10) on the hinge plate bush (8) engages a groove (9) in the hinge plate sleeve (5) so that the hinge plate bush (8) rotates with the hinge plate sleeve (5). A similar groove (22) is symmetrically provided at the other end of the hinge plate sleeve (5) such that the shutter hinge plate can be turned round and actuated on the other side of the door or window. A cap (16) is used to cover the top of the hinge plate sleeve (5) and as a means for the preliminary fixing of the adjusting bush (12) and the hinge plate bush (8) such that they are prevented from falling out of the hinge plate sleeve (5). In order to ensure the rotation of the adjusting bush (12), the abutting circular cylindrical faces of a cap neck (17) and the adjusting bush (12) are ribbed.
Patent HU-223680-B1 (HU)
IPC: B65B5/10
Filed: 1998-10-15
Abstract: A találmány szerinti csomagolóberendezésnek körbefutószállítóberendezése van felvevőkamrákkal (13), amelyekbe mindenkor egycsoport zacskó (3) kerül, amelyek egy gyűjtőtartály résztöltetét (5)képezik, és az egy résztöltethez (5) tartozó zacskók (3) azonosirányban állnak. A berendezésnek egy adagolóállomása (7) van, amelybena zacskók (3) a felvevőkamrákhoz (13) hozzá vannak vezetve, és egytovábbítóberendezése van a gyűjtőtartályoknak (12) legalább kétleadóállomáshoz való hozzá- és elvezetésére a csomagolóállomástartományában, amely leadóállomáson mindenkor az egy résztöltetnek (5)megfelelő zacskók (3) szállítóberendezésről a gyűjtőtartálynak vannakleadva. A szállítóberendezés a továbbítóberendezés (2) felett vanelhelyezve. A találmány lényege, hogy a továbbítóberendezés (2) úgyvan kialakítva, hogy legalább két gyűjtőtartályt (12) egymás mellettpárhuzamosan tud szállítani, és hogy a körbefutó szállítóberendezésnek(1) a leadóállomások tartományában egyenes vonalú leadószakaszai (8,9) vannak, és a leadószakaszokban (8, 9) mindenkor legalább kétleadóállomás van egymás mellett elhelyezve. A találmány tárgya továbbáeljárás zacskók (3) csomagolására gyűjtőtartályba, amelynek soránmindenkor két továbbítóberendezéssel párhuzamosan szállítottgyűjtőtartályt (12) töltenek meg, oly módon, hogy egy körbefutószállítóberendezés (1) két egymással szemben fekvő, egyenes vonalúszakaszának egyikén fekvő első leadószakaszban (8) egy másodikrésztöltetnek (5) megfelelő zacskókat (3) két gyűjtőtartályba (12)töltik, és egy, a körbefutó szállítóberendezés másik egyenes vonalúszakaszán fekvő második leadószakaszban (8) egy első résztöltetnek (4)megfelelő zacskókat (3) töltenek két gyűjtőtartályba (12), ahol azegyes résztöltetek zacskóit (3) mindenkor azonos irányba rendezik, ésa leadószakaszokhoz (8, 9) mindenkor egy résztöltetnek (4, 5)megfelelő csoportokban szállítják. ŕ
Patent HU-224313-B1 (HU)
Inventor: ENGLBERGER WERNER GUENTER DR
IPC: C07C215/64
Filed: 1999-12-13
Abstract: A találmány (I) általános képletű helyettesítettciklohepténszármazékokra[mely képletben R1 jelentése hidroxil-,alkoxi-, cikloalkoxi-, aril-oxi-, alkil-karbonil-oxi- vagy aril-karbonil-oxi-csoport; R2 jelentése alkil-, –(CH2)(1–2)-aril- vagyalkenilén-aril-csoport és R3 jelentése –(CH2)(0–1)-cikloalkil-,–(CH2)(0–2)-aril-, heterociklikus vagy alkil-heterociklikus csoport;mimellett az „arilcsoport" jelentése naftilcsoport, vagyhelyettesítetlen vagy egy vagy több azonos vagy különbözőhidroxilcsoporttal, fluoratommal, klóratommal, trifluor-metil-,alkil-, alkoxi-, cikloalkoxi-, cikloalkil-, alkenilén-, heterociklikusés/vagy fenilcsoporttal helyettesített fenilcsoport; és aheterociklikus csoportok vagy fenilcsoportok adott esetben kondenzálvalehetnek; és a „heterociklikus csoport" jelentése 5 vagy 6 tagú,telített vagy telítetlen, adott esetben kondenzált arilrendszerttartalmazó, egy vagy két nitrogén-, oxigén- és/vagy kénheteroatomottartalmazó heterociklikus csoport], e vegyületek előállítására ésgyógyszerként való felhasználására vonatkozik.
Patent JP-2913027-B1 (JP)
Title: 艦船サイズ検出装置
IPC: G01S3/803
Filed: 1998-01-08
Granted: 1999-06-28
Abstract: 【要約】
【課題】  水面からの放射音が艦船で遮断される現象を 利用して、目標の発生する艦船の磁気、音響、電界、水 圧等にかかわらず目標艦船のサイズ検出を可能とする。
【解決手段】  水面に向くように設置された受波素子１ -1〜１-nと、受波素子１-1〜１-nの出力を増幅する増幅 回路２-1〜２-nと、増幅回路２-1〜２-nの出力から複数 の音響指向性受波ビームを構成する指向性受波ビーム合 成回路３と、水面からの雑音の周波数及びレベル特性を 記憶して基準とする水面雑音特性記憶回路６と、指向性 受波ビーム合成回路３からの各音響指向性受波ビーム出 力を水面雑音特性記憶回路６の記憶している前記基準と 比較するビーム出力比較回路５-11〜５-mmと、ビーム出 力比較回路５-11〜５-mmの複数の出力から目標艦船の広 がりを計算する艦船サイズ計算回路７とを備えている。
Patent JP-2915888-B1 (JP)
Title: 配線基板及びその製造方法
IPC: H01L23/538
Filed: 1998-01-28
Granted: 1999-07-05
Abstract: 【要約】
【課題】  電子部品との接続はワイヤボンディングで、 マザーボードとの接続はハンダ付けによるＩＣパッケー ジで、その電気的接続の信頼性を高める。
【解決手段】  ボンディングパッド４を構成するメタラ イズ層４ａのニッケルメッキ層４ｂ，４ｃの上の金メッ キ層４ｄの厚さを１．２〜３．５μｍとし、外部用接続 端子１２を構成するメタライズ層１２ａのニッケルメッ キ層１２ｂの上の金メッキ層１２ｄの厚さを０．０１〜 １μｍとした。ボンディングパッド４は厚金メッキであ るからボンディングに支障ないし、外部用接続端子１２ は薄金メッキであるからハンダ中へのＡｕ−Ｓｎなどの 金属間化合物の生成も少ないのでその接合強度を低下さ せない。
Patent JP-2922494-B1 (JP)
Title: 防振部材の取付け構造
IPC: E02F9/16
Filed: 1998-04-09
Granted: 1999-07-26
Abstract: 【要約】
防振部材の取付け構造
【課題】
【解決手段】  建設機械において運転席２のフロア３と シャーシ５とに取付られる防振部材１０を、防振部材１ ０の上側にダブラー３０を設けて取付ける構造とする。
Patent NL-1043902-B1 (NL)
Title: Universele trolley voor spuitlijmvaten
Inventor: JEROEN LEON MARIA WINTERS
IPC: B62B5/00
Filed: 2021-01-07
Granted: 2022-07-22
Abstract: De uitvinding heeft betrekking op een universele trolley om op veilige wijze een spuitlijmvat te kunnen verplaatsen bij werkzaamheden zoals het leggen van dakbedekking op een plat dak of het leggen van tapijt waarbij verlijming noodzakelijk is. Het universele karakter van deze uitvinding wordt mede gekenmerkt door het vierkant waarin het spuitlijmvat wordt geplaatst, want met een doorsnede Van minimaal 315 mm binnenzijde is deze geschikt voor alle merken die zo'n vat verhandelen c.q. aanbieden. Door de lichte en zeer sterke constructie voldoet deze trolley tevens aan de ARBO voorschriften om blessures en dus bedrijfsuitval te voorkomen omdat deze uitermate handzaam is in gebruik. De veiligheid wordt gekenmerkt door de constructie met de 4 zwenkwielen die onafhankelijk van elkaar 360 graden kunnen draaien en zo omvallen van de trolley met daarop een spuitlijmvat moeten voorkomen.
Patent NL-2016063-B1 (NL)
Title: LED tube adapted for use with electronic ballast or ac mains and controlling method thereof.
Inventor: BING-HUANG LEE
IPC: H05B44/00
Filed: 2016-01-07
Granted: 2017-08-04
Abstract: An LED tube adapted for use with an electronic ballast and a controlling method thereof are disclosed. The proposed LED tube adapted for use with an electronic ballast includes a filament simulation circuit electrically connected to one of the electronic ballast and AC mains, a voltage isolation circuit electrically connected to the filament simulation circuit, and a fluorescent lamp tube simulation circuit electrically connected to the filament simulation circuit and including a lamp tube voltage simulation circuit.
Patent NL-2016313-B1 (NL)
Title: lichtarmatuur voor gebruik als bovenverlichting van een bowlingbaan alsmede een bowlingbaan
Inventor: JOHANNES ADRIANUS MARIA KROL
IPC: F21V13/04
Filed: 2016-02-24
Granted: 2017-09-11
Abstract: Langgerekte lichtarmatuur voor gebruik als bovenverlichting van een bowlingbaan, waarbij de langgerekte lichtarmatuur omvat een langgerekte strip omvattende Rood, Groen, Blauw, RGB, LED’s, welke LED strip dusdanig in het lichtarmatuur is gepositioneerd dat de LED’s, in gebruik, licht uitstralen richting de bowlingbaan, een langgerekt lenssamenstel, welk lenssamenstel dusdanig is geplaatst in de armatuur dat deze, in gebruik, onder de LED’s is gepositioneerd, waarbij de combinatie van de LED’s met het lenssamenstel bewerkstelligen dat het, in gebruik, onder het lenssamenstel uittredende licht, via een lichtuittreedvlak van het lenssamenstel, in de lengterichting een hoek maakt van tussen 40° - 80°, en in de breedte richting een hoek maakt van tussen 5° - 20°, ten minste vier, parallel in de lengterichting van het lichtarmatuur achter elkaar geplaatste lameldelen, welke lameldelen gekromd zijn uitgevoerd richting het lichtuittreedvlak, waarbij een rechte lijn door beide uiteinden van een lameldeel een hoek maakt met een normaalvector van het lichtuittreedvlak van tussen de 10° - 60°, elektrisch stuurorgaan voor het voeden en sturen van de LED strip, ten minste twee adapters voor het monteren van het lichtarmatuur aan een geleidingsrail boven de bowlingbaan, waarbij ten minste één van deze ten minste twee adapters is ingericht om elektrische voeding en elektrische stuursignalen van de geleidingsrail door te geven aan het elektrische stuurorgaan.
Patent NL-2018433-B1 (NL)
Title: A transport apparatus for milking parlour components and transport arrangement
Inventor: OTTO KRONE
IPC: B66F5/02
Filed: 2017-02-27
Granted: 2018-04-16
Abstract: A transport apparatus (16) for milking parlour components of a milking parlour (1) for milking, in particular for automated. milking, of milk—producing animals, comprising longitudinal beams (19, 19') and rollers (29, 29a; 29', 29'a), wherein the transport apparatus (16) comprises a first separate transport device (17) and. a second. separate transport device (18), each having at least two detachable receiving forks (20, 20 ').
Patent NL-2019383-B1 (NL)
Title: Bag with foldable back support
Inventor: MARTIJN BAKVIS
IPC: A45C9/00
Filed: 2017-08-01
Granted: 2019-02-19
Abstract: A bag comprises a portable container, comprising an envelope With at least one opening, Where at least part of the container is arranged to form a base and a back support. In this bag, the back support is hingedly provided in the container relative to the base, and the back support is arranged to be fixated relative to the base. In the bag, no external parts are provided at the outside of the bag. The back support may be a rigid rectangular plate-shaped member, hingedly connected at or near a short edge of the member to the base provided in the envelope. The plate-shaped member may be provided as part of the envelope or Within the envelope as a distinct member. This applies to the base as well, noted that the base is not necessarily a rigid member; it may also be a part of an optionally highly flexible envelope.
Patent NL-2021761-B1 (NL)
Title: Method and downhole pump for pumping liquid through a wellbore
Inventor: THOMAS WALBURGIS BAKKER
IPC: F04B47/08
Filed: 2018-10-04
Granted: 2020-05-11
Abstract: This invention relates to a downhole pump and a method for pumping liquid through a wellbore. The method comprises mounting a wellbore tubular into the wellbore, a pump tubular into the wellbore tubular, a bottom seal between the wellbore tubular and the pump tubular, and a pulse generator to periodically generate a pulse in an actuator liquid. The wellbore tubular, pump tubular and the bottom seal define an annular actuator volume which contains the actuator liquid. A one-way inlet valve is provided in the interior space of the pump tubular and a one-way outlet valve is provided in the interior space of the pump tubular and above the inlet valve. The inlet valve and the outlet valve between them define a pump chamber. The periodically generated pulse compresses the pump tubular and thus urges well bore liquid from the pump chamber through the outlet valve pumping liquid through the wellbore.