baber/WOPTO huggingface dataset:
Patent WO-2013181289-A9 (WO)
Title: Electromagnetic door-lock
Inventor: LAVRENEIE JOZEF
IPC: E05C3/24
Filed: 2013-05-29
Abstract: An electromagnetic door-lock for locking the door of a domestic appliance, comprising: - a housing (12) carrying at least a first and a second fixed electric contact (N, L), - a main slider (16) movable with respect to the housing (12) between un locking position corresponding to the open position of the door and a locking position corresponding to the closed position of the door, and - an electromagnetic actuator (34) configured for moving a locking element (30) between an extracted position and a retracted position, wherein in the extracted position the locking element (30) locks the main slider (16) in said locking position and in the retracted position the locking element (30) is disengaged from the main slider (16). The door-lock comprises a door sensing device including: - a door sensing pin (68) cooperating with a ramp portion (70) of the main slider (16) and movable with respect to the housing between a retracted position and an extracted position corresponding, respectively, to the locking position and to the unlocking position of the main slider (16), and - a bistable switch (50) electrically connected between said first and second fixed electric contacts (N, L), the bistable switch (50) being controlled by said door sensing pin (68) and snapping from an open position to a closed position when the door sensing pin (68) moves from the extracted position to the retracted position.
Patent WO-2020061443-A9 (WO)
Title: Methods of making and using universal centralized influenza vaccine genes
Inventor: WEAVER ERIC ANTHONY
IPC: A61K39/145
Filed: 2019-09-20
Abstract: This disclosure describes a number of different polypeptide sequences, and the nucleic acid sequences encoding such polypeptide sequences, that can be used alone or in combination as universal vaccines (e.g., against influenza A or influenza B in humans or influenza in swine).
Patent WO-2023064512-A9 (WO)
Inventor: MUNISWAMY MADESH
IPC: C01G51/08
Filed: 2022-10-13
Abstract: The inventor has discovered that limiting mitochondrial Mg2+ uptake (mMg2+) prevents diet-induced obesity. Administration of compositions that limit mitochondrial Mg2+ uptake (mMg2+) can be used for various therapeutic and prophylactic uses.
Patent WO-2013159125-A9 (WO)
Title: Système d'alarme de détresse
Inventor: KHAN ZULFIKER
IPC: G08B13/16
Filed: 2013-04-15
Abstract: L'invention concerne un système d'alarme de détresse (110) qui comprend un moyen d'activation déclenchable par un son permettant d'activer une alarme en réponse à une propriété de son prédéterminée, par exemple le volume d'un son tel qu'un cri, un coup de feu ou un élément analogue. Le moyen d'activation déclenchable par un son peut comprendre un microphone (16). Généralement, le système (110) comprend également un moyen d'activation actionnable manuellement, par exemple un « bouton d'alarme » (12, 14). Un sélecteur (20) est fourni, qui est effectivement une commande de volume commutable et peut servir à configurer le système (110) pour prendre en considération différents environnements sonores ambiants. Une alimentation électrique de bord peut être fournie, par exemple deux piles boutons (non illustrées). En remplacement ou en complément, le système (110) peut comprendre un bornier (34) pour se connecter à une alimentation électrique externe. En cours d'utilisation, le système (110) peut servir à activer des alarmes audibles et/ou inaudibles, par exemple une alarme avec sirène et/ou un signal de détresse transmis à une société de sécurité ou d'alarme.
Patent DK-202270640-A9 (DK)
Title: Fish farming system
Inventor: Marthe Almeland Mohn
IPC: A01K61/60
Filed: 2022-12-21
Abstract: This disclosure relates to a fish farming system (1) comprising a ring- or polygonal shaped floating collar (2), and an enclosure (3) for fish suspended from and supported by the floating collar (2). In some examples the fish farming system comprises a plurality of enclosures. Additionally described is a method for operating a fish farming system (151), such as in a first and a second operational position. Additionally described is a fish examination system for a fish farm (2100), which comprises a fish retrieval arrangement, an examination station, an exit port and a control system, and a fish extraction system (3000), which comprises a separation compartment, an extraction compartment and a restriction arrangement.
Patent CS-234346-B1 (CS)
Inventor: NOVYSEDLAK SIMON
IPC: F04D29/36
Filed: 1983-01-04
Abstract: Oběžné koleso tangenciálnebo ventilátora
je vhodné najma pre elektrické
akumulačné pece. Pozostáva z lopatiek,
upevněných svojimi okrajmi k čelám oběžného
kolesa. Rieáeným problémom je zhospodárnenie
jeho výroby pri zachovaní,
připadne zlepšení jeho úžitkových vlastnosti,
čo sa dosahuje tým, že poměr
dížky (L) oběžného kolesa k jeho vonkajšlemu
priemeru (D) je 4,5 až 5,5,
počet lopatiek (1) je od 12 do 1θ pri
poloměre (R) ich zakrivenia od 15 do 17 %
vonkajšieho priemeru (D) oběžného kolesa
a uhle Sát. odklonu lopatiek (1) od radiálnej
priamky, resp. od roviny preloženej
osou ventilátore v rozmedzl od 40 do 45°.
Patent CS-246801-B1 (CS)
Inventor: DOMANSKY EDUARD
IPC: G05D16/06
Filed: 1985-01-04
Abstract: Reduktor tlaku tekutin řeší problém
konstrukce co nejjednodušěi, ale přitom
velmi citlivé a přesné tlakové regulace
použitelné při provozu spalovacích motorů
na plynná paliva, v různých pneumatických
a brzdových zařízeních apod. Reduktor obr
sáhuje dvě spolu spřažené komory, z nichž
každá je rozdělena membránou na dvě Sásti.
První komora se vstupním otvorem pro médium
o vyšším tlaku je opatřena ventilem
a axiálně průchozím otvorem pro převod
média do prostoru za první membránu. Prostor
za první membránou je propojen s druhou
komorou pomocí ventilku, který je
v kontaktu s vnitřní stranou druhé membrány.
K ni z druhé strany přiléhá pružina
se stavěcím šroubem. Přední Sást druhá
komory před druhou membránou je spojena
kanálkem a prostorem o nižším tlaku.
Patent IE-61284-B1 (IE)
Title: Substituted 3-aminosydnonimines, process for the preparation thereof, and the use thereof
Inventor: SCHONAFINGER KARL
IPC: C07D241/04
Filed: 1989-01-31
Abstract: Pharmacologically useful N-substituted-N-nitrosoaminoacetonitriles of the general formula I   <IMAGE> (I)  wherein A denotes the radical -CH2-, -O-, -S(On)-, -N(R2)- or a direct bond, R1 and R2 denote alkyl having 1 to 4 c atoms or phenylalkyl having 1 to 4 C atoms in the alkyl radical, n denotes the number 0, 1 or 2, are prepared, for example, by nitrosylation of compounds of the general formula II <IMAGE> (II)
Patent CS-273856-B1 (CS)
Title: Singling-out device for fibres singling out
Inventor: PAVLICEK LUBOS ING
IPC: D01H4/30
Filed: 1989-01-13
Abstract: The separating device handles creation of efficient yarns in a simple manner, without serious interventions into the structure of a separating device. The principle of the design lies in the fact that positionally adjustable guides for guiding the individual slivers in a separated state are arranged in front of a condensation funnel, which is equipped with a common input and output, while the guides are connected to the driving motor via adjustable elements.<IMAGE>
Patent CS-213581-B1 (CS)
Inventor: SAFAR JIRI
IPC: F27B7/38
Filed: 1978-01-19
Abstract: Zařízeni ee týká oementářak;á rotační
peoe.
Účelem vynálezu je urychlená doprava
alínku do ehladíoího bubnu a ▼ něm a
zabránění jeho přepadávání spět do rotační
peoe.
Zařízení J« v podstatě vytvořeno
tím, še Vstupní koneo ohladíeího bubnu je
šikmo seříznut, čímž zde vzniká elipeovitá
stěna, k níž je připojena kruhovou základnou
kuželoví čáat spojená · hrdlem
pláětě rotační peoe, přičemž plooha kruhově
aákladny kuželové části je měnil
než plooha ellpaorité etěny ohladíeího
bubnu.
Patent CS-213291-B1 (CS)
Inventor: HROMAS JOSEF
IPC: C07D277/68
Filed: 1981-01-23
Abstract: Vynález se týká způsobu výroby 2- -chlorbenzthiazolu chlorací 2-merkaptobenz- thiazolu thionylchloridem za přítomnosti aktivního uhlí v prostředí netečného organického rozpouštědla nebo směsi rozpouštědel s teplotou varu nad«95 °C; reakce se 
provádí ve dvou fázích tak, že se při přidávání thionylchloridu udržuje teplota v rozmezí 7θ až 75 °C a potom se dokončí při teplotě 95 až 100 0C.
Patent CS-215813-B1 (CS)
Inventor: ADAMEK IVO
IPC: E01C23/00
Filed: 1980-01-28
Abstract: Vynálezem je řešena údržba a asanace úzkých
lesních komunikací s podélným spádem do 20
až 25 %.
Zařízení pro údržbu a asanaci lesních cest tažené
traktorem, zpravidla speciálním lesním
kloubovým traktorem, se skládá z nosného ramene
uchyceného v jednom bodě za traktorem,
které je možno ve svislé i vodorovné rovině ovládat
hydraulickými válci. Na konci tohoto ramene
je na svislém nosníku otočně uchyceno těleso
radlice, které je také ve vodorovné i svislé rovině
ovládané hydraulickými válci. Řešení umožňuje
z kabiny řidiče nastavit těleso radlice podle
technologické potřeby i mimo stopu traktoru.
Hydraulicky ovládané nosné rameno umožňuje
přítlak radlice při záběru nebo vyzdvižení celého
zařízení do nesené polohy. Spouštění a zvedání
radlice je možné i s vodicím kolem, které je
umístěno za radlicí.
Vynálezu je možno využít při údržbě zemědělských
komunikací a při údržbě veřejné dopravní
sítě.
Patent CS-221478-B1 (CS)
Inventor: KACETL LUBOMIR
IPC: C08B1/00
Filed: 1982-02-03
Abstract: Pro přípravu vláknótvorného roztoku celulózy
je použit zkrácený postup katalytického
odbourání a rozpouštění celulózy v systému
dimethylsulfoxid — páraformaldehyd.
K odbourání celulózy v dimetylsulíoxidu jsou
použity katalyzátory typu alkalických kovů,
hydridů a amidů alkalických kovů, alkoholátů
a organokovových sloučenin. U celulózy
odbourané jiným způsobem je možno použít
tyto látky DMSO bez kyslíku jako aktivátorů,
zvyšujících reaktivitu celulózy a
urychlujících rozpóuštěcí proces.
Katalyzátory a aktivátory usnadňují tvorbu
metylcelulózy za kratší dobu, při nižších
teplotách a s menším množstvím paraform*
aldehydu.
Patent CS-237952-B1 (CS)
Title: Press cylinder system for fodder mixture pressing
Inventor: ENDLER KARL-HEINZ
IPC: B30B11/20
Filed: 1980-02-07
Abstract: Two press rollers (1) are asymmetrically arranged in a vertical annular die. The points of contact of the two press rollers (1) on the die (2) enclose an angle of 150 DEG  to 170 DEG . This ensures that deleterious load peaks in important functional elements of the press unit are avoided and favourable drawing-in conditions for the material to be pressed are created. <IMAGE>
Patent DK-172321-B1 (DK)
Title: Ultrasonic flow-measuring device
Inventor: TSCHIRNER PETER
IPC: G01F1/66
Filed: 1990-02-07
Granted: 1998-03-16
Abstract: PCT No. PCT/EP88/00715 Sec. 371 Date Feb. 9, 1990 Sec. 102(e) Date Feb. 9, 1990 PCT Filed Aug. 10, 1988 PCT Pub. No. WO89/01609 PCT Pub. Date Feb. 23, 1989.An ultrasonic fluid-flow measuring device in which a measuring tube having a rectangular cross section and a measuring tube wall lying opposite a pair of ultrasonic transformers is provided. The device utilizes three flat surface elements angled with respect to each other to reflect an ultrasonic beam so as to guide its passage through the fluid. Such structure provides a device in which the flow of the fluid is not impaired at any place in the measuring tube, and in which the inner walls of the measuring tube are free of niches which might promote the deposition of particles located in the fluid.
Patent IE-56444-B1 (IE)
Title: Ostomy bag closure means
IPC: A61F5/44
Filed: 1985-01-29
Abstract: A closure member for sealing the lower opening end of a drainable ostomy bag having a channel and a tubular member for mating and locking engagement therewith and held in parallel and spaced apart relationship in the open position by a common planar connecting member. The connecting member also serves as a hinge for closing and opening the closure member. Preferably, the channel, tubular member and connecting member are integrally formed in an extrusion process using either a high densitiy polyethylene or high density polypropylene.
Patent IE-37279-B1 (IE)
Title: Improvements in the extraction of copper from metallic materials
IPC: C22B7/00
Filed: 1973-02-12
Abstract: 1399281 Extraction of copper ISC SMELTING Ltd 6 Feb 1973 [21 Feb 1972] 7945/72 Heading C1A [Also in Division C7] Copper values are leached from copper dross separated from lead bullion produced in the blast furnace smelting of lead or zinc lead by contacting particles of the dross in the form of a metallic lead matrix containing copper and copper compound inclusions with an aqueous solution of ammonium carbonate and ammonium hydroxide to dissolve copper from the dross. The leaching may be effected in the presence of the oxidizing gas or the leachate may be subsequently treated with an oxidizing gas. The ammoniacal solution is preferably a solution of (NH 4 ) 2 CO 3 and NH 4 OA and may contain SO 4 - preferably with a mole ratio CO 3 : SO 4 of 1 : 3. The leaching may be carried out in any conventional manner. The copper may be recovered from the leachate by contact with a copper-selective organic phase, e.g. one containing a hydroxy oxime, from which it may be extracted with an aqueous mineral acid (preferably H 2 SO 4 ). This aqueous phase may be evaporated to recover a copper salt or it may be electrolysed to recover copper.
[GB1399281A]
Patent IE-46577-B1 (IE)
Title: Improvements in or relating to thieno(2,3-c)and(3,2-c)pyridines,process for their preparation and therapeutic applictions thereof
IPC: A61P7/02
Filed: 1978-03-14
Abstract: This invention relates to compounds having the formulae (I) +TR (II) in which: R1 represents hydrogen, a halogen atom or a lower alkyl radical, a lower alkoxy radical or a lower alkylthio radical; R2 represents hydrogen or a lower alkyl, aralkyl, aryl, carboxy or alkoxycarbonyl radical; R3 represents hydrogen, a C1-12 alkyl radical, or an aralkyl or aryl radical, optionally substituted on the aromatic nucleus with one or more halogen atoms or hydroxy, nitro, cyano, carboxamido, carboxy, alkoxycarbonyl, lower alkyl, lower alkoxy or trifluoromethyl groups; and n is zero or 1. Said new compounds possess therapeutically useful blood-platelet aggregation inhibiting properties and also anti-thrombotic, anti-sludge, antalgic and anti-inflammatory properties.
Patent IE-32057-B1 (IE)
Title: Method of stabilizing bulked continuous filament thermoplastic yarn
IPC: D02G1/02
Filed: 1968-05-07
Abstract: 1,209,977. Spinning; treating textiles. JONATHON LOGAN Inc. 17 May, 1968 [20 July, 1967], No. 23699/68. Headings D1F and D1L. A method of stabilising at a desired bulk level bulked, heat-settaible, thermoplastic yarn wound in a package on a core, the yarn in the outer portion of the package being at substantially the desired bulk level and the yarn in the inner portion of the package being below the 'desired bulk level, comprises the steps of removing the core and replacing it with a perforated tube of smaller diameter, axially compressing the package, and treating the package with heated liquid. A package 17 of bulked yarn wound on a cardboard tube 16 is placed on a table 23, core 16 being aligned with an aperture (24) in table 23 and with a mandrel 20 carried by the piston of a hydraulic ram 21. A perforated, stainless steel tube 25, less in diameter than tube 16, is positioned on mandrel20 in abutment with a radial flange 22 thereon. The ram is then operated to eject tube 16 and to replace it with tube 25, the package being compressed by flange 22 at the end of the downward stroke. The package is then immersed in heated liquid which may also serve for dyeing the yarn.
[GB1209977A]
Patent IE-39446-B1 (IE)
Title: Improvements in or relating to liquid handling
IPC: F17C6/00
Filed: 1974-03-13
Abstract: 1469749 Transferring liquid cargoes R H DAVIES 12 March 1974 [13 March 1973] 12001/73 Heading B8E [Also in Divisions E1 and F2] A gas well-head 31 has a liquefaction plant 32 mounted on a frame 34 and connected by coaxial piping 35 to a storage tank 33 anchored at 38, 39 and having a tubular mooring point on a landing stage 71 and a coaxial loading arm 58 connectible to the tanker manifolds 69. A rotatable platform 56 and swivably pipe sections 36, 37 allow movement of the tank 33 relative to the frame 34 under mooring forces. In the embodiment of Fig. 4 gas passes through a pipe 79 from a production platform 73 to a liquefaction unit 76 from which liquified gas passes through similar coaxial piping 83 to one or more satellite loading stations 81 to which a tanker can be moored for loading as in Fig. 1. The use of insulated coaxial piping allows the transfer of cryogenic materials by the liquid passing through the inner duct and the pressure equalization return flow of vapour passing through the outer duct.
[GB1469749A]
Patent IE-36395-B1 (IE)
Title: Endoprosthetic knee joint devices
IPC: A61F2/38
Filed: 1972-05-30
Abstract: 1395896 Endoprosthetic knee joints NATIONAL RESEARCH DEVELOPMENT CORP 25 May 1972 [1 June 1971] 18278/71 Heading A5R An endoprosthetic knee joint device has a femoral part 10, Fig. 11, having portions 11, 12 defining respective elongate bearing surfaces of longitudinally convex form, portions 11, 12 being joined by a bridge 13 so that a slot extends between portions 11, 12 from corresponding ends thereof, and a tibial part, Fig. 17, having portions 21, 22 each defining a bearing surface for engaging a said convex bearing surface of the part 10, portions 21, 22 being interconnected by a bridge 23 so that a slot extends between portions 21, 23 from bridge 23 to corresponding edges of portions 21, 22. In use the .bridges are located anteriorly with portions 11, 12, 21, 22 extending posteriorly therefrom and with the natural cruciate ligaments passing through said slots. The convex bearing surfaces are preferably shaped to conform closely to the natural femoral condyles. The bearing surfaces of portions 21, 22 are elongate and of generally dished form longitudintally and laterally, so that one pair of corresponding ends closely conform to the surface shapes of the anterior portions of the natural merisci when the joint is at or near zero flexion, and opposite ends conform to the natural menisii shape when the joint is at or near maximum flexion and the intermediate portions of said bearing surfaces smoothly join said end portions. The bridge 23 is formed as a ridge, and the bridge 13 which is formed as a trough and acts as a bearing surface for the patella. The components may be attached to the natural femur and tibia using acrylic resin or other gap-filling agents or cements, the back surface of the femoral component being provided with pegs 14 and/or webs and the back surface of the tibial component being provided with dovetail grooves 24 and central plateaus 26 to assist such securement. The femoral and tibial components may be made of metal, such as chrome/cobalt alloy, and of plastics material, such as polyethylene, respectively by casting in moulds made by using the natural bones.
[GB1395896A]
Patent IE-36408-B1 (IE)
Title: Resolution of d1-camphor-10-sulfonic acid
IPC: C07D317/72
Filed: 1972-06-08
Abstract: 1391664 Resolution of dl-Camphor-10- SUlphoniC acid ELI LILLY & CO 22 June 1972 [23 June 1971] 29307/72 Heading C2C A process for the mutual resolution of dlcamphor-10-sulphonic acid and x-dl-4-dimethylamino - 1,2 - diphenyl - 3 - methyl - 2 - butanol comprises the following stages (a) reacting dlcamphor-10-sulphonic acid and α-d-4-dimethylamino-1,2-diphenyl-3-methyl-2-butanol in a 1 : 2 molar ratio in acetone, (b) separating the precipitated α-d-4-dimethylamino-l,2-diphenyl- 3 - methyl - 2 - butanol - d - camphor - 10- sulphonate from the resolution mixture, (c) adding to the remaining resolution mixture 2 moles of α-dl-4-dimethyl-amino-1,2-diphenyl-3- methyl-2-butanol for each mole of 1-camphor- 10- sulphonic acid present in said mixture, (d) separating the precipitated a-l-4-dimethylamino - 1,2 - diphenyl - 3 - methyl - 2 - butanoll - camphor - 10 - sulphonate from the resolution mixture, (e) separately adding to each of the salts separated in steps (b) and (d) at least an equivalent amount of a base of sufficient strength to liberate the resolving amine, (f) separating the liberated bases from the respective d- and (-camphor-10-sulphonates of the added base of step (e) and (g) separately acidifying said salts of said added base to obtain d-camphor-10-sulphonic acid and lcamphor-10-sulphonic acid respectively. The filtrates left after removal of crystalline salts in stages (b) or (d) may, in a modification of the process, be worked up directly in order to isolate and purify the l-camphor-10-sulphonic acid or α-d-4-dimethylamino-1,2-diphenyl-3- methyl-2-butanol respectively contained therein. The resolved dimethylamino- I ,2-diphenyl-3- methyl-2-butanols or their acid addition salts may be esterified to produce d or l-propoxyphene or their acid addition salts.
[GB1391664A]
Patent IE-36556-B1 (IE)
Title: Composite powder and the production thereof
IPC: C22C32/00
Filed: 1972-06-29
Abstract: 1390857 Making composite powder INTERNATIONAL NICKEL Ltd 6 July 1972 [6 July 1971] 31572/72 Heading B3A [Also in Division C7] A process for producing a composite powder of an aluminium or aluminium-base alloy matrix containing a dispersion of alumina comprises mechanically alloying the constituents by milling a powder charge comprising aluminium or aluminium oxide coated aluminium particles in the presence of an asymmetric organic surfactive agent in vapour or liquid form and in an amount less than 4% of the total powder charge by weight to produce uniformly dispersed, substantially equiaxed particles of aluminium oxide not exceeding 2000 in diameter in the aluminium or aluminium alloy matrix. Preferably, 0À3 to 2% by weight of a surfactive agent is used and the agent ideally has a boiling point not exceeding 200 C., contains from 1-5 carbon atoms per molecule and the molecules each have a metallophilic and a metallophobic group. The agents may consist of organic acids, alcohols, ketones, aldehydes or ethers. The agents can be distributed directly to the mill with the powder charge and grinding media before milling or periodically. Alternatively, they can be vaporized and continuously or intermittently introduced in vapour form to the mill during milling. The aluminium oxide is provided by layers on the aluminium particles during the milling and oxygen can also be added to the mill along with fine aluminium oxide powder. The grinding ball to powder volume ratio is from 4 : 1 to 50 : 1, preferably 15 : 1 to 30 : 1, and ball, attritor, shaker, vibratory and planetary ball mills can be used. The initial powder charge can be in the form of pre-alloyed particles of the desired alloy or of different powders of the respective alloy constituents. The alloys can contain by weight one or more of the following elements to the amounts indicated: 2% Ni, 0À5% Cr, 10% Cu, 21% Si, 1À5% Mn, 10% Zn, 10% Mg, 20% Sn, 2% Fe, 1% Pb, 1% Bi, 0À2% Zr, 0À2% Ti, 1À5% Li, 0À1% V, 0À8% Cd, 0À02% B, 0À05% Be. Refractory oxides of metals other than aluminium, e.g. yttria, thoria and magnesia, suitable for dispersion strengthening can also be added to the powder charge. The mechanically-alloyed composite powders can be consolidated into powder metallurgy products by mechanical or hydrostatic compaction and sintering and hot extrusion, by hot pressing and hot extrusion, by hot extrusion or hot rolling without prior compaction or sintering. If the products are to be cold-worked, e.g. drawn into wire, rolled into sheet, the C content should be #0À5%, although higher contents can be tolerated with hotworking.
[GB1390857A]
Patent JP-2914371-B1 (JP)
Title: スクリーンの係止構造
IPC: E04F10/02
Filed: 1998-01-05
Granted: 1999-06-28
Abstract: 【要約】
【課題】  スクリーンの展張操作を容易に行うことを可 能とし、その展張状態を容易に維持させるとともに、ス クリーンの展張状態を保持しない際には必要以上に突出 しないスクリーンの係止構造を提供する。
【解決手段】  窓部２１の一側縁に対向する他側縁側に 配設されるとともに、この配設位置において窓部２１の 窓面に対して揺動することで進退自在となって設けられ る係合片１１を備え、スクリーン８を展張させる際に、 スクリーン８の先端縁のパイプ９を係合片１１に係合さ せると同時に係合片１１が揺動して進出し、スクリーン ８の展張状態を保持する。この係合片１１には、後退す る方向の付勢力を有する付勢部材を備えた構成とされて おり、スクリーン８が展張状態とされない際には後退状 態を維持する。