baber/WOPTO huggingface dataset:
Patent JP-H11503634-A (JP)
IPC: A47K10/28
Filed: 1996-04-17
Abstract: A towel dispenser is provided with a pivoting unit into which a winding roller driven by way of a friction drive is mounted in an easily suspensible manner. An additional loop, which is tightened by a compensator roller in a direction +p, is formed in the dispenser in front of the winding roller, and when clean towel is pulled down a portion of used towel (T') is used to form the rear part of a loop of cloth (T; T') used in the front part. Changing used cloth (T') and loading with clean towel (T) is performed by rotating the pivoting unit, can be carried out in a very simple manner and is completed by opening or closing the cover of the dispenser. A path- and time-dependent control of the towel delivery is integrated in the dispenser.
Patent JP-H11504242-A (JP)
Title: リアルタイムでコントラスト強調された超音波画像を処理する方法
IPC: G01S7/52
Filed: 1996-04-25
Abstract: (57)【要約】
本発明は、リアルタイムで着色されコントラスト強調された画像を、診断用超音波の間に得られた階調ビデオ画像のシーケンスから生成する新規な方法である。特定の着色スキームは、どの情報パラメータのリアルタイム表示が望まれるかによって、変化する。ビデオ画像のセグメントを着色するのに用いられる情報パラメータは、到着時刻、高輝度化持続時間、および絶対高輝度化を含んでいる。到着時刻着色は、ある与えられた画素がある与えられた強度閾値に到達する時刻を表す。高輝度化持続時間は、ある与えられた画素の強度が、ある与えられた閾値を超えたままであり続ける時間を表す。絶対高輝度化は、その領域の画素により得られるさまざまな閾値を表す。
Patent JP-2001509268-A (JP)
Title: イオン交換樹脂の処理装置
IPC: G21F9/34
Filed: 1998-01-08
Abstract: (57)【要約】
原子力設備からの粗粒状イオン交換樹脂（Ｉ）の信頼できる中間又は最終貯蔵をイオン交換樹脂の膨潤性を低下させることにより可能にする。そのためイオン交換樹脂（Ｉ）の処理用に備えられた装置（１）は本発明ではイオン交換樹脂（Ｉ）を粉砕するためのディスクミル（１２）を含んでいる。
Patent JP-2000513594-A (JP)
Title: 小さな食片を調理またはあぶる装置およびその使用法
IPC: A47J37/06
Filed: 1996-03-08
Abstract: (57)【要約】
小さな食片をあぶる装置、すなわちメッシュを含むバスケット（１）について説明する。この装置は、従来型のグリルの蓋が閉じられたときでもグリルの内部にはまり、かつこの装置を容易に取り外して、小さな食片を落とすことなく揺すってひっくり返すことができる。このバスケットは任意選択で、調理表面として装置とは独立に使用できる取り外し可能な蓋（４”）を有する。蓋が所定の位置にあるとき、装置全体をひっくり返すことができる。蓋（４”）が取り外されているかまたは上昇位置にある場合、内部の食品を、撹拌または移動させることができる。
Patent JP-H10503859-A (JP)
Title: スイッチング装置及びその使用
IPC: G02F1/19
Filed: 1996-05-17
Abstract: (57)【要約】
透明な基板（３）、２００ｎｍの厚みを有するガドリニウムのスイッチング膜（５）及び１０ｎｍの厚みを有するパラジウム層（７）を備えるスイッチング装置（１）を開示する。水素ガスの影響により、透明なＧｄＨ x （ｘ＞２）半導体層（５）が形成され、該層は排気により透明でないＧｄＨ x （ｘ＜２）層に転換することができる。両組成物間の転換は可逆的であり、かかる現象は、例えば、光スイッチング素子、水素センサー及び薄いディスプレイに用いることができる。
Patent JP-2000508606-A (JP)
Title: 一体として形成された再使用可能な閉塞装置付き容器とその製造法
IPC: B65D1/02
Filed: 1997-04-10
Abstract: (57)【要約】
本発明は容器または軟質チューブ（５０）に固定されるための頭部（１）であって、環状部分の破断の前は密閉遮蔽器の役割を果たし、ついで再閉塞に用いられる蓋（２０）に破断可能な環状部分（１０）によってそのオリフィス（７）が接続された頸部（３）を有する頭部（１）の製造方法に関するものである。この方法は：ａ）蓋（２０）が、その周縁（３１）が破断可能な環状部分（１０）と共通の対称軸を有し、少なくとも３つの爪（３２）を備えたプレート（３０）によって延長し；ｂ）スカート（４０）が一方の端で開口し；その内壁（４６）が部分的に円筒状で、その断面がプレート（３０）の、爪をのぞく周縁（３１）の形と一致し、前記爪を適合させるための少なくとも３つのくぼみ（４１）を備え；ｃ）スカートがプレート（３０）の爪（３２）をスカート（４０）のくぼみ（４１）の中に導入することによって引き起こされる、固定に至るまでプレート（３０）の周囲に押し込まれる、ことを特徴とする。本発明は衛生製品または化粧品のためのチューブを低コストで製造することを可能にする。
Patent JP-2000509192-A (JP)
Title: 小型螢光ランプを実質的に囲む凹み形キャビティ内の光反射表面
IPC: F21V7/22
Filed: 1997-04-08
Abstract: (57)【要約】
本発明は、小型螢光ランプ（ＣＦＬ）照明器具内で使用するための改良型反射体である。本発明は、延伸膨張ポリテトラフルオロエチレンの反射体を用いることによってＣＦＬからの著しく改善された光出力を達成する。光出力が現在使用されているＣＦＬ照明器具の反射体に比べて改善され、かくしてより多くの光を提供しかつ/又はより少ないエネルギー消費を可能にするだけでなく、本発明の照明器具は、同様に、より快適な光出力を生成する。
Patent JP-2000509740-A (JP)
Title: オレフィンモノマー重合のための担持触媒組成物および方法
IPC: C08F4/639
Filed: 1997-05-01
Abstract: (57)【要約】
担体物質、少なくとも１種の遷移金属錯体および所望により少なくとも１種の助触媒を含む触媒系。遷移金属錯体は、元素周期表の４〜６族から選択される還元された遷移金属（例えば、チタン）ならびに多座配位モノアニオン性リガンドおよび２個のモノアニオン性リガンドから成る。本発明はまた、触媒系を使用したポリマーの製造法および得られるポリマー物質にも関する。
Patent JP-2001519821-A (JP)
Title: 触媒および重合のためのその触媒の使用
IPC: C08F32/08
Filed: 1998-04-07
Abstract: (57)【要約】
本発明は、触媒；および、重合のためのその触媒の使用に関する。本触媒は、式（Ｉ）：
 ［式中、Ｒ 1 は、単環式または多環式炭化水素であり；Ｍ 1+ は、VIIIb族の遷移金属であり；Ｘ - は、少なくとも１種の非配位または弱く配位したアニオンである。］で表される化合物を含む。
Patent JP-2001524886-A (JP)
IPC: C23C30/00
Filed: 1998-05-15
Abstract: According to the present invention an uncoated titanium based carbonitride cutting tool insert with superior plastic deformation resistance and wear resistance is provided. This is accomplished by heat treating the material in nitrogen atmosphere under conditions to obtain a nitrogen rich surface zone, also containing substantial amounts of binder phase.
Patent MX-159214-A (MX)
Inventor: HERR FRIEDHELM
IPC: B60S11/00
Filed: 1984-06-04
Abstract: To load several self-propelled vehicles in a container with optimum utilization of the available volume in the container, the front axle and wheels are replaced by a smaller auxiliary wheel which is attached to the front end of the vehicle. The rear wheels are replaced by smaller auxiliary wheels. The resulting reduction in vehicle height and front end width makes it possible to locate more vehicles than previously possible into an open top, shipping container. The vehicles as modified for shipping are still driveable and steerable and thus, may be loaded and unloaded from the container by driving the vehicle under its own power.
Patent NZ-199834-A (NZ)
Title: Bacterial growth medium containing an in situ generated basic salt
Inventor: SANDINE W E
IPC: C12N1/20
Filed: 1982-02-25
Abstract: An improved powdered bacterial growth medium compositon adapted to be admixed with water is described. The powdered growth medium includes an alkali metal cation in a compound A admixed with a compound B containing an anion which reacts wth the alkali metal cation in compound A in an aqueous growth medium to form an essentially water insoluble salt or base, including the alkali metal cation and the anion, which is acid neutralizing. The water insoluble salt is thus formed in situ in the aqueous growth medium when compounds A and B are added to the aqueous solution. Also described is an improved method for growing acid producing bacteria in an aqueous growth medium by forming the insoluble salt or base. The resulting growth medium is particularly adapted for neutralizing acids generated during growth of lactic acid producing bacteria which are grown for use in various food fermentations.
Patent NZ-203510-A (NZ)
Title: Spreader for granular or powdery material.hopper has part spherical wall portion with outlet ports
Inventor: VAN DER LELY A
IPC: A01C17/00
Filed: 1983-03-08
Abstract: A spreader has a hopper (2) the lower region of which comprises a part-spherical wall portion (12) in which outlet ports (50, 51) are provided for enabling material to pass from the hopper to a distribution member (5). The free aperture of each port is adjustable by a dosing slide (80,81). The dosing slides (80, 81) are controllable by an adjusting mechanism (114) which is able to displace either one of the dosing slides (80, 81) without displacing the other.
Patent NZ-214637-A (NZ)
Title: Electrostatic spraying equipment: conductive charging of the spraying liquid
Inventor: JACKSON A J
IPC: B05B3/18
Filed: 1985-12-19
Abstract: An apparatus for spraying liquids from a vehicle, suitably an aircraft or other airborne vehicle. The apparatus includes at least two sprayheads, each having adjacent thereto an associated electrode or an associated electrically conducting or semiconducting part of the vehicle. Generator means apply potentials to the sprayheads and to the electrodes or conducting or semiconducting parts of the vehicle so that an intense electrical field is developed between the liquid which emerges from each sprayhead and the adjacent electrode or part. The intensity of each field is sufficient to atomise the emerging liquid. The polarities of the applied potentials are such that liquid emerging from one sprayhead is charged positively whilst liquid emerging from the other sprayhead is charged negatively. Connections to the generating means are such that electrical current flows from a target to the generating means via spraying liquid and one of the sprayheads and then back to the target via the generating means, the other sprayhead and liquid emerging from the other sprayhead.
Patent NZ-214639-A (NZ)
Title: Copolymerisable surface active agents, their use in polymerisation processes and the synthesis thereof
Inventor: BECKLEY R S
IPC: C08F2/26
Filed: 1985-12-19
Abstract: The present invention is concerned with compounds of the formula: 
<CHEM>
 wherein M is a cation which is alkali metal, ammonium, amino or hydrogen; and each of A and B is a group which, together with the carboxyl group to which it is attached, forms an ester, at least one of A and B being a group having the formula: 
<CHEM>
 wherein x is from 0 to 5. 
<??>The compounds of the invention are useful as graftable and/or copolymerizable surfactants in latex preparation.
Patent NZ-217929-A (NZ)
Title: Microcapsules
Inventor: EKMAN B M
IPC: A61K9/50
Filed: 1986-10-15
Abstract: The invention relates to a completely novel type of micro-capsules, viz. such capsules where an encapsulated hydrophobic or lipophilic substance is surrounded by polar solid crystals of polar lipids which expose their hydrophilic face outwards and their hydrophobic face turned inwards towards the hydrophobic or lipophilic substance. These micro-capsules can be utilized to encapsulate for instance tacky substances or substances to be protected against oxidation or influence from light. Moreover, an especially interesting use according to the invention is the use of said micro-capsules in an ointment base, where the active ingredient is well protected within said capsules up to the use but which at the application on the skin directly comes into contact with the skin surface as a consequence of the crystalline structure of the shell. Furthermore, the invention relates to a special micro-capsule composition in the form of a dispersion of said micro-capsules in water or a polar liquid, where the crystals constitute 5-50 percent by weight and water or the polar liquid 50-95 percent by weight. Moreover, the invention relates to a process for the preparation of said micro-capsules, wherein a mixture of said polar lipid with water or polar liquid is formed, the mixture is heated above the transition temperature of the lipid and the mixture is then cooled to the desired temperature so as to obtain crystallization, the hydrophobic or lipophilic substance being added before or during the liposomic phase. Finally, the invention relates to a crystal dispersion of the polar lipid in a polar liquid, such as glycerol, ethylene- or propylene glycol.
Patent NZ-222792-A (NZ)
Title: Process for genetically transforming plant protoplasts
Inventor: NEGRUTIU IOAN
IPC: C12N15/87
Filed: 1987-12-03
Abstract: The method makes use of simple, purely chemical procedures and entails the genetic material being transferred into the plant cell directly without using a natural system which is infectious for plants, such as a plant bacterium or plant virus, and without transfer by insects or phytopathogenic fungi, but by incubating together the DNA to be transformed and the plant protoplasts in a suitable incubation medium. It is possible in this way to transfer genes very straightforwardly and efficiently into plant material, resulting in plants with improved properties. <IMAGE>
Patent NZ-225735-A (NZ)
Title: Compressed air operated stapling tool: initial displacement of cylinder by air, followed by displacement of piston whilst cylinder is moving
Inventor: JOHNSSON NILS
IPC: B25C1/04
Filed: 1988-08-08
Abstract: Method and arrangement for an apparatus for operating by means of compressed air, comprising a displaceable cylinder (18), open at both ends, in which there bears a displaceable piston (31) designed for expulsion of fixing elements fed forward below the piston. The cylinder and the piston are displaceable, by the action of air, in a cylinder housing (2) between an upper and a lower end position at which are arranged damping elements (16, 26). The cylinder (18) and the piston (31) bear with their respective end faces at their respective end positions against a surface of the damping element. The apparatus comprises an inlet (12) and an outlet (13) for the air, the flow of which is controlled by means of a valve (33, 34), and an upper chamber (14) and a lower chamber (30). These chambers are in connection with the inside of the cylinder by means of at least one opening (28) in the cylinder wall. Furthermore, the apparatus comprises at least one second opening (23) in the cylinder wall which is in connection with the outlet (13) via a return channel depending on the position of the cylinder.
Patent NZ-232046-A (NZ)
Title: Production of ceramic bodies using boron carbide and two or three metals
Inventor: CLAAR TERRY DENNIS
IPC: C04B35/65
Filed: 1990-01-08
Abstract: The present invention relates to a novel method of manufacturing a composite body, such as a ZrB2-ZrC-Zr composite body, by utilizing a post-treatment technique. Moreover, the invention relates to novel products made according to the process. The novel process modifies at least a portion (10) of a composite body by exposing said body to a source of second metal.
Patent NZ-235602-A (NZ)
Title: Optical fibre splice enclosure with stack of circular splice trays
Inventor: FOSS RAYMOND CHARLES
IPC: G02B6/44
Filed: 1990-10-08
Abstract: PCT No. PCT/GB90/01544 Sec. 371 Date Mar. 17, 1992 Sec. 102(e) Date Mar. 17, 1992 PCT Filed Oct. 8, 1990 PCT Pub. No. WO91/06024 PCT Pub. Date May 2, 1991.An optical fiber splice storage tray having a series of alternate height ridges 33, 34 in which the space or slot between each adjacent pair of ridges is narrow at the root and wider at a higher level so that small cross-section splices 35 can be disposed as an interference fit between any adjacent pair of the ridges larger cross-section splices 36 can be disposed between the same ridges but at a higher level, and very large cross-section splices 37 can be disposed as an intererence fit between any adjacent pair of the alternate higher ridges 34.
Patent NZ-250243-A (NZ)
Title: Volumetric filling machine having volume of chambers adjusted by feedback from weight of material discharged from chambers
Inventor: WADELL LARS GUSTAF ALBERT
IPC: B65G65/40
Filed: 1993-11-19
Abstract: A machine and process for filling a product (13) volumetrically which comprises introducing the product into a hopper (12), recording the level of the product (13) in the hopper (12) and transmitting the recorded information to a computer (18), conveying an empty chamber (19) to a position beneath the hopper (12), automatically adjusting the volume of the empty chamber (19) and filling the empty chamber (19) with the product (13) conveying the filling chamber (19) away from the hopper (12) and discharging the product (13), recording the weight of the discharged product (13) and transmitting the recorded weight to the computer (18), the automatic adjustment of the volume of the empty chamber (19) being based on the recorded imformation transmitted to the computer (18). <IMAGE>
Patent NZ-264049-A (NZ)
Title: Benzospiroalkene derivatives and pharmaceutical compositions
Inventor: CORDI ALEX
IPC: A61P25/20
Filed: 1994-07-20
Abstract: Compounds of formula (I): <IMAGE>  in which:   - X represents -CH2-, -(CH2)2-, -CH=CH-, -O-CH2-, S-CH2-, -SO-CH2- or -SO2-CH2-, - R1 represents a hydrogen or halogen atom or a linear or branched (C1-C6)alkoxy group, - R2 represents a linear or branched (C1-C6)alkoxy or a linear or branched (C1-C6)alkylthio group, their isomers and their addition salts with a pharmaceutically acceptable acid. Medicaments.
Patent NZ-268896-A (NZ)
Title: 2-amino-4-phenyl-4-oxo-butyric acid derivatives and pharmaceutical compositions thereof
Inventor: VARASI MARIO
IPC: A61P25/28
Filed: 1994-07-12
Abstract: Use in the prevention and/or in the treatment of neurodegenerative diseases of 2-amino-4-phenyl-4-oxo-butyric acid derivatives which act as kynureninase enzyme inhibitors and/or kynurenine-3-hydroxylase enzyme inhibitors. Several of these derivatives are new and, as such, constitute a further object of this invention, together with the process for their preparation and the pharmaceutical compositions containing them.
Patent NZ-272209-A (NZ)
Title: Myocardial revascularisation of the heart by a laser
Inventor: JEEVANANDAM VALLUVAN
IPC: A61N5/06
Filed: 1992-04-27
Abstract: Myocardial revascularization is performed by an apparatus and method which forms channels in the myocardium from inside the ventricular cavity without penetrating the full thickness of the ventricular wall. A catheter has a fiber optic connected at its handling end to a laser, and terminates at the insertable end of the catheter. A servomotor controls the advancing of the fiber to stop positions relative to the catheter. At each stop position another channel is created. An aiming beam aids in directing the channel forming fiber end to different desired channel positions.
Patent NZ-273304-A (NZ)
Title: Iontophoretic device characterised by containing a benzopyran derivative as active ingredient
Inventor: MESENS JEAN LOUIS
IPC: A61N1/30
Filed: 1994-08-19
Abstract: PCT No. PCT/EP94/02764 Sec. 371 Date Jan. 26, 1996 Sec. 102(e) Date Jan. 26, 1996 PCT Filed Aug. 19, 1994 PCT Pub. No. WO95/05815 PCT Pub. Date Mar. 2, 1995The present invention relates to the iontophoretic delivery to a patient, more in particular to a migraine patient, of a compound of formula (I) as shown hereinunder. The invention also relates to a device for the iontophoretic delivery of a compound of formula (I), as well as to a composition containing a compound of formula (I), which can be applied in a device for iontophoretic delivery. Said compounds are benzopyranalkylaminoalkyl substituted guanidines having the formula    <IMAGE>  (I)  the pharmaceutically acceptable acid addition salts thereof, and the stereochemically isomeric forms thereof, wherein R1 is hydrogen or C1-6alkyl; R2 is hydrogen, C1-6alkyl, C3-6alkenyl or C3-6alkynyl; R3 is hydrogen or C1-6alkyl; or R2 and R3 taken together form a bivalent radical of formula -(CH2)m- wherein m is 4 or 5; or R1 and R2 taken together form a bivalent radical of formula -CH=CH- or of formula -(CH2)n-, wherein n is 2, 3 or 4; or R3 may represent a bond when R1 and R2 taken together form a bivalent radical of formula -CH=CH-CH=; R4 and R5 each independently are hydrogen or C1-6alkyl; Alk1 is a bivalent C1-3alkanediyl radical; Alk2 is a bivalent C2-15alkanediyl radical; and R6 and R7 each independently are hydrogen, halo, C1-6alkyl, C3-6alkenyl, C3-6alkynyl, hydroxy, C1-6alkyloxy or cyano.
Patent NZ-305812-A (NZ)
Title: Method and apparatus of testing board production
Inventor: MCKINLAY PETER ROBERT
IPC: G01N33/34
Filed: 1996-04-23
Abstract: PCT No. PCT/AU96/00235 Sec. 371 Date Nov. 12, 1997 Sec. 102(e) Date Nov. 12, 1997 PCT Filed Apr. 23, 1996 PCT Pub. No. WO96/34286 PCT Pub. Date Oct. 31, 1996This invention relates to a method and apparatus for obtaining data relating to the compressive failure characteristics of a liner of a board sample which includes the following. A sample is aligned within a pivotal retaining mechanism of a testing device adapted to rotate about a line. A displacement force is applied at a constant rate to at least one edge of the liner such that the rotatable retaining mechanism allows self-positioning of the sample. Measurements are taken regularly of load and/or deflection observed until the liner fails.
Patent NZ-328405-A (NZ)
Title: Fructan and/or polydextrose-containing dairy powders
Inventor: BOOTEN KARL
IPC: A23L33/26
Filed: 1997-07-23
Abstract: The present invention relates to fructan- and/or polydextrose-containing dairy powders. These powders are obtained by co-drying of the dairy and at least one ingredient selected from the group consisting of linear fructans, branched fructans, modified fructans and polydextrose. These powders improve the mouthfeel, texture and taste of the food compositions wherein they are used.
Patent NZ-332416-A (NZ)
Title: Method and device for liquefying thickened crude oil sediments
Inventor: STREICH BRUNO
IPC: B01F5/02
Filed: 1997-04-17
Abstract: The object of the method and device according to the invention is to liquefy sludgy to compact sediments (3 - not shown) from containers (1) in which crude oil (2) is stored and/or transported.  A liquid is injected over the sediment surface via nozzles (11) on lances which are steadily immersed in the tank of crude oil and the sediment (3 - not shown) liquefying at least partially or dissolving in the liquid under the effect thereof such that it can be removed from the container (1) with the liquid.  To that end a substantially horizontal, possibly self-contained, flow of liquid is produced over the sediment surface by orienting the injection direction of all the nozzles (11) such that it has a horizontal component aligned tangential to a flow line of the flow of liquid to be produced and in the direction of flow.  The injected liquid is crude oil or a refinery product and differs from the lowermost liquid layers lying above the sediment in that it has a lower proportion of heavy components.  The nozzles are at choice orientated such that in zones lying one upon the other the liquid jets are ejected such that between them the surrounding medium gradually unites to form a joint current in the desired direction.
Patent NZ-334177-A (NZ)
Title: A device, for controlling warp threads for the production of leno fabrics on a textile machine, comprising vertically adjustable heddle frames mounted on a third heddle frame
Inventor: DVORAK JOSEF
IPC: D03D49/04
Filed: 1997-07-24
Abstract: A device for controlling warp threads for the production of leno fabrics on a textile machine comprises a reed 1 equipped with gliders separated from each other by slots intended to guide pairs of warp threads, one of which belongs to a system of stationary warp threads 19, and the other, to a system of rotating warp threads 18.  A reversibly moveable system of needles 3 fitted with eyes 4 for guiding the system of stationary warp threads 19 is arranged in front of the reed 1 and coupled with a mechanism adapted to impart to it said reversible movement.  The device further comprises vertically adjustable heddle frames 10, 11, 14 situated in front of the system of needles 3, a first heddle frame 10 having oblique slots 12 for the passage of the rotating warp threads 18, a second heddle frame 11, a straight slot 13 passing through the whole width of the warp for the passage of the warp thread system 18.  At least one guide member 20 of the stationary warp thread system 19 situated over the heddle frames 10, 11, 14 in parallel with them is coupled with the system of needles 3 fitted with eyes 4 and at least two compensation rollers 15 of the rotating warp thread system 18 are mounted on a third heddle frame 14.  The guide member 20 is situated in front of the plane passing through the system of the needles fitted with eyes, considered in the direction of the travel of the warp threads.  Rollers 15 may be mounted on a swinging shaft 16 adapted reversingly to swing on the third heddle frame 14 and coupled with the drive mechanism (not shown).
Patent NZ-334576-A (NZ)
Title: Float valve for water closet cistern
Inventor: NORTH ALAN DAVID
IPC: E03D5/02
Filed: 1997-09-04
Abstract: A unitary valve apparatus (200) for use in controlling the filling and the release of fluids from a fluids storage vessel comprises an outlet valve means (212) for controlling release of fluid from said vessel, a filling valve means (254) carried by or on said outlet valve means for controlling filling of said vessel and float means (282) carried by or on one of said outlet valve means or said filling valve means for detecting the level of fluid in said vessel. Each said valve means has or is associated with a respective chamber containing a respective member having a first side and a second side, each of which sides is exposed, in use, to a pressurised fluid. Each said member is independently moveable to open the respective said valve means (212, 254) by the said pressurised fluid acting on the second said side thereof when the said pressurised fluid acting on the first said side thereof is released.