baber/WOPTO huggingface dataset:
Patent CZ-20002249-A3 (CZ)
Title: Fungicidal mixtures based on amide compounds and pyridine derivatives
Inventor: SCHELBERGER KLAUS
IPC: A01N43/40
Filed: 1998-12-15
Abstract: Fungicidal mixtures comprise: (1) an amide compound of formula (I) and (2) a quinoline derivative of formula (II) and/or an amine compound of formula (III). Fungicidal mixture comprises: (1) an amide compound of formula (I); and (2) a synergistically effective amount of a second component which comprises: (i) a quinoline derivative of formula (II), or an N-oxide or salt and/or; (ii) a compound of formula (III). A = Ar or Het (both optionally substituted by 1-3 alkyl, halo, CHF2, CF3, (halo)alkoxy, alkylthio, alkylsulfinyl or alkylsulfonyl; R<1> = H; R<2> = phenyl (optionally substituted by 1-3 Q and optionally fused to a group M); or cycloalkyl (optionally substituted by 1-3 Q); M = a saturated 5-membered ring which may contain an O or S atom and is optionally substituted by one or more alkyl; Ar = an aryl group; Het = an aromatic or non-aromatic, 5-6 membered heterocycle which contains 1-3 N, O or S atoms; Q = alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkenyl, cycloalkyloxy, cycloalkenyloxy, phenyl or halo; in Q, the (cyclo)aliphatic residues are optionally halogenated, the cycloaliphatic residues are optionally substituted by 1-3 alkyl, and the phenyl is optionally substituted by 1-5 halo and/or 1-3 (halo)alkyl, (halo)alkoxy or (halo)alkylthio; R<12>-R<15> = H, OH, NO2, halo, T, TO or TS; R<16>-R<18> = H, OH, CN, NO2, halo, R, RO, RS, 1-7C hydroxyalkyl, 2-4C acyl, or aryl or aryloxy (both optionally substituted by 1-3 CN, NO2, halo, T, TO or TS); X<1>-X<5> = H, halo, T, TO, 1-4C alkylthio, 1-4C thioalkoxy, 1-4C sulfonylalkyl, NO2, NH2, N-(1-4C carboxyl)-amino or N-(1-4C alkyl)-amino; R<19> = 1-4C alkyl, 2-4C alkenyl, 2-4C alkynyl or 1-4C alkyl-(3-7C) cycloalkyl (all optionally substituted by halo, CN or 1-4C alkoxy); R<20> = phenyl or Het' (both optionally substituted by halo, T, TO, 1-4C alkoxy-(2-4C) alkenyl or 1-4C alkoxy-(2-4C) alkynyl; R<21>, R<22> = H, T, TO, 1-4C alkylthio or N-(1-4C alkyl)-amino T = 1-4C alkyl, halo(1-4C)alkyl; R = 1-7C alkyl, halo(1-7C)alkyl.
Patent CZ-20011885-A3 (CZ)
Title: Process for producing a polymer network
Inventor: GOTTSCHALL KLAUS
IPC: C08F8/34
Filed: 1999-11-26
Abstract: In a process, a polymer is crosslinked and then reversibly bound to a template that is dissolved or suspended in a solvent. The polymer thereby acquires a conformation adapted to the template such that an interaction enthalpy between the template and the polymer is increased by more than 0.1 kcal/mole. The template can be a chemical compound or a biological structure.
Patent CZ-20012437-A3 (CZ)
Title: Rotor spinning apparatus with contactless passive radial bearing of spinning rotor
Inventor: COENEN NORBERT
IPC: F16F15/00
Filed: 2001-07-02
Abstract: The open-end rotor spinning station has a radial bearing support for the spinning rotor and a damper to prevent radial oscillations. The damper has a sensor, control and actuator which has at least two fixed actuator magnets (11,12) at least at one working point (30) along the rotor shaft (9) fitted with a magnet (8). The rotating shaft magnet is the active component for the passive bearing mounting system for the spinning rotor. The open-end spinning rotor has at least two sensors (15,16) at the location of the rotating shaft magnet, to register any radial shifts in the rotor shaft. The sensors and the actuators are mounted on a plane at right angles to the rotary axis of the rotor shaft. The actuators are positioned at an offset angle from the sensors at the working position at the rotor shaft, and the two actuators and the two sensors are offset from each other in their pairs by 90 degrees Additional actuators (13,14) are placed diametrically opposite the first pair of actuators, to exert a magnetic force on the rotating shaft magnet of equal strength and the same orientation. The rotating shaft magnet is a permanent magnet ring around the shaft. The actuators are at an axial gap from the magnet ring. The control unit has systems to give an exclusive capacitative uncoupling of the signals generated by the sensors, so that only dynamic signals are transferred.
Patent CZ-20013171-A3 (CZ)
Title: Device for moistening fuel
Inventor: SMITH RAUB WARFIELD
IPC: F02C7/22
Filed: 2001-09-03
Abstract: A combined cycle system includes gas and steam turbines, a saturator (201) and a fuel gas superheater (202) for supplying moisturized heated fuel gas to the gas turbine, a gas turbine exhaust heat recovery system for generating steam and heating water for the superheater and a saturator heater for a recycle water conduit (211). A constant ratio of water supplied to the fuel gas saturator to dry fuel gas supplied to the fuel gas saturator is maintained by adjusting (203) the flow of the recycle water stream. Additional properties of the moisturized fuel gas, such as temperature, moisture content, composition, and heating value, are also used to control the water recycle stream to supply consistent moisturized fuel gas to the gas turbine system. <IMAGE>
Patent CZ-20014211-A3 (CZ)
Title: Building element
Inventor: KUPPERS PETER
IPC: E04C2/36
Filed: 2000-05-25
Abstract: A construction element 1 consists of multiple individual layers 2, 3, 4 whereas the medium layer 3 is in turn composed of a multitude of additional individual layers 23, 24, 25 . The individual layers 2, 4, 23, 24, 25 are configured in such a way that they interlock and clamp into each other thereby producing or defining surfaces that allow the elements or individual layers 2, 4, 23, 24, 25 that are integrated in the construction of the construction element to evenly absorb the forces that are being applied. At the same time, not only pressure or lateral forces but also tensile and transverse forces can be absorbed so that altogether a construction element 1 with a low weight but high stability has been created. This construction element 1 can be shaped or deformed appropriately and can also be extended three-dimensionally so that an adaptation to the individual conditions in any plane or direction is possible.
Patent CZ-20033083-A3 (CZ)
Title: Cover net for garden pools
Inventor: KRATOCHVILOVA MILADA
IPC: E04H4/10
Filed: 2003-11-13
Abstract: The mesh screen cover for garden pools comprises knitted mesh netting of cotton or a synthetic material, with square meshes of 2mm to 30mm, fitted with a flexible rim or a tunnel of a solid fabric along the edge. The size and shape of the mesh screen cover are adjusted to the size and shape of the pool. The mesh screen cover can be fitted with fastening and fixing means along the edge. An elastic string is the most suitable means for such purposes.
Patent DD-271426-A3 (DD)
Title: Verfahren zur herstellung von stabilen chromgelbpigmenten
Inventor: NAUMANN DIETER
IPC: C09C1/20
Filed: 1981-11-09
Abstract: Das Verfahren zur Herstellung von Chromgelbpigmenten, die gegen saure und reduzierende Loesungen bei erhoehten Temperaturen bestaendig sind, vollzieht sich zunaechst in bekannter Weise durch Faellen, Alterung, Nachbehandeln und saure Waschung zur Abtrennung von Schwermetallsalzen. Erfindungsgemaess erfolgt nun eine Teilneutralisation der Suspension, und eine Abtrennung mit weiterer Aufarbeitung der Pigmente wird vorgenommen, wenn ein waessriger Auszug der Pigmente einen p H-Wert von 2,4 bis 5,5 aufweist.
Patent DD-230261-A3 (DD)
Title: Verfahren zum auffuellen eines dosierbehaelters
Inventor: JAROSEVSKIJ STANISLAV L
IPC: C21B5/00
Filed: 1981-12-04
Abstract: Die Erfindung betrifft die Eisenmetallurgie und kann beim Einblasen von Schuettstoffen, z. B. von Kohlenstaub, in den Hochofen angewendet werden. Ziel der Erfindung ist die Erhoehung der Effektivitaet des Dosierprozesses. Das Ziel wird dadurch erreicht, dass beim Auffuellen des Dosierbehaelters aus ihm die verbrauchte Luft in einer Menge abgelassen wird, die gleich dem Druckluftverbrauch beim Durchlueften ist, der minuetliche Luftverbrauch fuer das Durchlueften wird gleich dem Volumen des Zwischenbehaelters gehalten.
Patent DD-226731-A3 (DD)
Title: Verfahren zur herstellung von klebstoffen
Inventor: BELLSTEDT KLAUS
Filed: 1982-11-01
Abstract: Bei einem Verfahren zur Herstellung von Klebstoffen, insbesondere zum Verkleben optischer Systeme soll in einem Polyadditionssystem ein Klebstoff geschaffen werden, der eine schnellere und genauere Verarbeitbarkeit, speziell bei der Verklebung optischer Teile, ermoeglicht. Der Klebstoff soll unter Beibehaltung der an sich bekannten vorteilhaften Epoxidharz-Eigenschaften eine schnelle Fixierung der zu verklebenden Teile gestatten und soll bei seiner Herstellung gut polyaddierbar sein. Erfindungsgemaess wird der Mischung eines Diepoxides mit einem difunktionellen Amin in einem geeigneten Polyadditionssystem zur schnellen photochemischen Fixierbarkeit eine mehrfunktionelle Acrylat- oder Methacrylatkomponente und/oder eine monofunktionelle Acrylat- oder Methacrylatkomponente und ein radikalbildender Photoinitiator beigemengt.
Patent DD-237067-A3 (DD)
Title: Verfahren zur herstellung von mehrfach spezifisch tritiummarkiertem cholesterol
Inventor: ROEMER JOHANNES
IPC: C07J9/00
Filed: 1984-12-14
Abstract: Die Erfindung dient zur Herstellung von mehrfach spezifisch mit Tritium markiertem Cholesterol, welches in zunehmendem Umfang in medizinischen Einrichtungen als Tracer zu pharmakologischen Untersuchungen, vorzugsweise des Fettstoffwechsels, der Fettsucht (Adipositas) und der damit verbundenen Herz-Kreislauf-Erkrankungen verwendet wird. Ziel der Erfindung ist die Bereitstellung eines Verfahrens, das in einer einfachen Synthese mehrfach spezifisch markiertes Cholesterol liefert. Erfindungsgemaess wird die Aufgabe dadurch geloest, dass 2-bromierte 6b-Bromcholestenone, die leicht zugaengliche und in kristalliner Form bei Raumtemperatur als stabil und lagerfaehig erkannte Steroidketone sind, in Loesungsmittel in Gegenwart von Pd/CaCO3 mit T2 reduktive dehalogeniert werden und das entweder dreifach oder doppelt markierte Cholest-4-en-3-on nach dem Verfahren von Collins und Hobbs (Aust. J. Chem. 18 (1965) 1049) ueber das entsprechend markierte 6b-Bromcholest-4-en-3-on in das entweder dreifach oder doppelt markierte Cholesterol ueberfuehrt wird.
Patent DD-264344-A3 (DD)
Title: Verfahren und Schaltungsanordnung zur Herstellung oder zum Ätzen von Schichten auf halbleitersubstraten unter Plasmaeinwirkung
Inventor: KROEDEL GUNTER
Filed: 1986-04-21
Abstract: Die Erfindung betrifft ein Verfahren und eine Schaltungsanordnung zur Herstellung einer Schicht auf Halbleitersubstraten oder zum Aetzen von Schichten auf Substraten unter Plasmaeinwirkung. Das Anwendungsgebiet der Erfindung erstreckt sich auf die Halbleitertechnik und hat eine Verbesserung der Homogenitaet der Schichtabscheidung bzw. des -abtrages unter Plasmaeinwirkung zum Ziel. Die Aufgabe der Erfindung, ein Verfahren zur Erhoehung der Gleichmaessigkeit der Schichtabscheidung bzw. des -abtrages anzugeben, wird dadurch geloest, dass die Spannung des zugehoerigen HF-Generators waehrend der Schichtbearbeitung mehrfach unter bestimmten Bedingungen unterhalb der Plasmabrennspannung abgesenkt wird. Eine Schaltungsanordnung zeigt die Moeglichkeit der Realisierung des Verfahrens auf.
Patent DD-272002-A3 (DD)
Title: Ruesselartige gelenkeinheit, vorzugsweise fuer industrieroboter
Inventor: VOLMER JOHANNES
IPC: B25J17/02
Filed: 1986-09-23
Abstract: Die Erfindung betrifft eine ruesselartige Gelenkeinheit als Handgelenk fuer Industrieroboter und Manipulatoren, speziell zum Farbspritzen und Beschichten. Es handelt sich dabei um ein Raumgetriebe, ein sechsgliedriges raeumliches Koppelgetriebe mit dem Freiheitsgrad 2. Durch zwei Linearantriebe, vorteilhaft Hydraulikzylinder, wird es moeglich, ein Antriebsglied (10) auf einer schirmartigen Flaeche im Raum zu bewegen. Da ausschliesslich Drehgelenke verwendet werden, ist eine relativ einfache und spielarme Konstruktion moeglich. Fig. 1
Patent DD-274139-A3 (DD)
Title: Kettenklaue fuer schwere ankerstegketten
Inventor: LIESKE KARL
IPC: B63B21/04
Filed: 1987-10-28
Abstract: Die Erfindung bezieht sich auf den Schiffbau und betrifft eine leichte Kettenklaue fuer schwere Ankerstegketten zum Uebertragen grosser horizontaler Zugkraefte fuer die Handhabung auf dem Arbeitsdeck eines Schiffes abgelegter Kettenstraenge. Das niedrige Gewicht der Kettenklaue ermoeglicht ein schnelles und unkompliziertes Anschlagen derselben durch zwei Mann Deckspersonal ohne Kranhilfe. Erfindungsgemaess wird das dadurch erreicht, dass die beiden Haken einer Kettenklaue, die den halbkreisfoermigen Endabschnitt eines liegenden Kettengliedes formschluessig aufnehmen, durch einen ein stehendes Kettenglied ueberbrueckenden Buegel miteinander verbunden und auf den Hakenrueckseiten mit Seilrillen versehen sind, die aequidistant zu den Hakentragflaechen diese rueckseitig umfassen und zwei die Zugkraft einleitende gleichbelastete Seilaugen aufnehmen. Fig. 3
Patent EP-1026029-A3 (EP)
Inventor: SINNHUBER RUPRECHT DIPL-ING
IPC: B60N2/427
Filed: 2000-01-24
Abstract: The vehicle seat has a backrest (3) consisting of a lower part (5) extending to below the occupant shoulder region and a back and headrest part (6) which is adjustable in angle relative to the lower part. On the upper side of the back and headrest part there is a headrest (4) which can be moved forward. It contains a pressure plate (7).
Patent EP-1033690-A3 (EP)
Inventor: PEDRAZZI FRANCO
IPC: G08B29/18
Filed: 2000-03-01
Abstract: This project concerns an electronic radio frequence module, paired up with any kind of alarm
system for the control of environments operated by radio waves; able to detect and neutralize the
attempt of blinding the same alarm system by ill-intenioned people who want to elude
surveilliance sytems placed for the safety of the surroundings.
Patent EP-1044653-A3 (EP)
Inventor: LALONDE DONALD H
IPC: A61B17/03
Filed: 2000-03-03
Abstract: A bone clamp permits temporary securement of adjacent bone segments
of an involved bone separated by a fracture following open reduction thereof.
A pair of jaw members opposed to one another are mutually urgeable together,
each of the pair of jaw members including gripping structure carried on a
support for fixedly engaging the abutted segments of the involved bone, the
fracture being oriented within an intermediate region located between said
opposed ends of the support. In an embodiment directed to non-dynamic
compression of the fracture, the gripping structure either fictionally engages the
surface of the bone, or penetrates perpendicular to a longitudinal bone axis. An
alternative embodiment is directed to a dynamic compression clamp, in which
the gripping structure includes piercing structure which enters respective bone
segments at an opposed angle to the fracture, and in which penetrating
movement of the piercing structure thereby effects an urging together of the
bone segments in a direction of the fracture line. Such temporary securement
permits subsequent repair of the fracture by a desired fixation process.
Patent EP-1041233-A3 (EP)
Inventor: CARNIEL MASSIMO
IPC: G07F9/06
Filed: 2000-03-13
Abstract: A terminal for the automatic management of, in particular, the valuables-transport
service, comprising a body (2) for containing a central unit (3)
which is connected to a coupling element (5) which can be connected to a
valuables-transport container to be checked. The body (2) is associable with
a plate (11) which can be fixed to a fixed structure and is provided with at
least one element (20,21) for coupling to the body (2) which has means for
interrupting the connection between the central unit (3) and the coupling
element (5) when the body (2) and the plate (11) are separated.
Patent EP-1048229-A3 (EP)
Title: Vorrichtung zum Herstellen von Zigaretten
Inventor: FOCKE HEINZ
IPC: A24C5/32
Filed: 2000-03-31
Abstract: Vorrichtung zum Herstellen bzw. Transportieren von Zigaretten,
insbesondere Filterzigaretten (18), die aus (doppelt langen)
Tabakstöcken (10) gebildet, mit zunächst doppelt langen Filterstopfen
(14) verbunden und mittig im Bereich derselben durchtrennt
werden. Die Tabakstöcke (10), Zigaretten (15), Doppelzigaretten
(22) und Filterzigaretten (18) werden teilweise durch
einen Muldengurt transportiert, nämlich durch einen Zahnriemen
mit Mulden (28) zur Aufnahme je eines Tabakstocks (10) oder von
zwei Zigaretten (15) bzw. Filterzigaretten (18). Im Bereich von
Arbeitsstationen werden die Tabakstöcke (10), Zigaretten etc.
durch Trommeln transportiert.
Patent EP-1043819-A3 (EP)
Inventor: VAN DE WALLE CHRISTIAN G
IPC: H01S5/30
Filed: 2000-04-07
Abstract: An asymmetric waveguide nitride laser diode structure and a method of fabricating the
same is provided. The asymmetric laser diode structure comprises an active layer
having a first and a second surface, a transition layer in contact with the first surface
of the active layer, a p-cladding layer disposed adjacent to the transition layer, and an
n-type layer in contact with the second surface of the active layer.
Patent EP-1046817-A3 (EP)
Inventor: OKUNO TAKUYA
IPC: F04B27/10
Filed: 2000-04-19
Abstract: A housing of a variable displacement compressor
includes a crank chamber (14) and cylinder bores.
Pistons are accommodated in the cylinder bores. A drive
shaft (15) is supported by the housing to pass through the crank
chamber (14). A lug plate (16) is fixed to the drive shaft (15). The
pistons are coupled to the lug plate (16), which converts
rotation of the drive shaft into reciprocation of the
pistons and compresses gas in the cylinder bores. A thrust
bearing (30) is located between the housing (11) and the lug plate and
transmits a thrust load applied to the lug plate (16). The
thrust bearing (30) includes a front race (31) located next to the
housing, a rear race (32) located next to the lug plate, and
rollers (33) located between the front and rear races. A front
seat (34) for supporting the front race (31) is formed on the housing.
A rear seat (35) for supporting the rear race (32) is formed on the
lug plate. The diameters of the front and rear seats are
different, which causes elastic deformation of the races
when a thrust load is applied.
Patent EP-1052148-A3 (EP)
Title: Bordnetz bei Kraftfahrzeugen
Inventor: BLAUENSTEINER WOLF-DIETER
IPC: B60R16/03
Filed: 2000-04-22
Abstract: Ein Mehrspannungsbordnetz (3,5) zur Versorgung elektrisch betriebener
Verbraucher bei Kraftfahrzeugen, wobei jedem jeweils mit
unterschiedlichen Spannungen (14,42V) betriebenen Bordnetzkreis jeweils
bestimmte Verbraucher zugeordnet sind, ist dadurch
gekennzeichnet, daß Überkreuz-Schaltungsmittel (6) vorgesehen sind,
die bei Ausfall oder Störung eines Kreises selbsttätig eine
Versorgung der an diesen ausgefallenen Bordnetzkreis
angeschlossenen Verbraucher aus einem der anderen Bordnetzkreise
sicherstellen.
Patent EP-1050827-A3 (EP)
Inventor: KICHERER ROBERT DIPL-ING
IPC: G06F15/02
Filed: 2000-04-22
Abstract: The pocket calculator (1) has an input keyboard (10) provided with number input keys (11) and function keys (12) for initiating a processing operation on the entered numbers. The function keys correspond to processing operations with variable parameters, the parameter values provided by signals received via an in-built reception device and entered in a calculator memory.
Patent EP-1063824-A3 (EP)
Inventor: SHIRAKATA NAGANORI
IPC: H04L27/26
Filed: 2000-06-16
Abstract: The object of the present application is to provide symbol
synchronisation, which minimises intersymbol interference, in a
multicarrier receiver. The correlation between a received
synchronisation signal and a local replica of the transmitted
synchronisation signal is generated, and the result is integrated over
the length of the guard interval; from the result, the correct symbol
timing (i.e., the correct FFT window) is calculated.
Patent EP-1083202-A3 (EP)
Inventor: SANDSTROM PAUL HARRY
IPC: C08L23/28
Filed: 2000-08-29
Abstract: This invention relates to a rubber composition
comprised of a combination of cis 1,4-polybutadiene and at
least one liquid hydroxyl terminated polyalkylene polymer
together with a halogenated copolymer of isobutylene and p-methylstyrene
and a minor amount of at least one conjugated
diene-based elastomer, preferably cis 1,4-polyisoprene.
The rubber composition contains particulate reinforcement
as carbon black or as carbon black and silica together with
a coupling agent. The invention also relates to a tire
having a sidewall of such rubber composition.
Patent EP-1066804-A3 (EP)
Inventor: PENN IAN M
IPC: A61F2/915
Filed: 1997-03-05
Abstract: An unexpanded stent comprising a proximal end and a distal end in communication with
one another, a tubular wall disposed between the proximal end and the distal end. The
tubular wall has a longitudinal axis and a porous surface defined by a plurality intersecting
members comprising rows of a repeating pattern (A,B) interconnected by longitudinal
struts, the stent being expandable from a first, contracted position to a second, expanded
position upon the application of a radially outward force on the stent, The longitudinal
struts comprise an arcuate flexure means disposed in spaced relation between adjacent
rows of the repeating pattern (A,B) to allow for substantially complementary extension and
compression of a diametrically opposed pair of the longitudinal struts upon flexure of the
stent.
Patent EP-1095918-A3 (EP)
Inventor: WADA TAKAYA
IPC: H01P7/04
Filed: 2000-10-20
Abstract: A ceramic composition includes 100 parts by weight of a main component of
the formula: xBaO-y{(1-α)Sm 2 O 3 -αNd 2 O 3 }-zTiO 2 , and as secondary components,
0.3 part by weight or less of a Mn compound in terms of MnO and 1.0 part by
weight or less of a Ta compound in terms of Ta 2 O 5 , wherein 13.0≤x≤23.0;
0<y≤12.0; 75.0≤z≤83.0; 0≤α≤1; and  x+y+z=100 . Further, 1.5% by mole or less of
the Ti element is preferably replaced with Zr. The resulting high frequency dielectric
ceramic composition has a high relative dielectric constant (εr) and a high Q
value in a microwave region, can control the temperature coefficient of resonant
frequency (τf) in the vicinity of zero (ppm/°C), and has a satisfactory thermal shock
resistance.
Patent EP-1106475-A3 (EP)
Inventor: KOBAYASHI MASANORI
IPC: B62D5/00
Filed: 2000-11-22
Abstract: When a steering wheel is relatively quickly turned at the
time of parking, before a first stopper mechanism located between
an input shaft and an output shaft is operated, an elastic member
47 attached to a movement end of a rack shaft 13 comes into contact
with a rack stopper 39 of a rack housing 14, thereby absorbing
the impact at the time of steering at parking. That is, the strike
speed when contact portions of the first stopper mechanism are
brought into contact with each other, is slowed down. Accordingly,
the uncomfortable noise due to the strike sound is not given to
the driver.
Patent EP-1106264-A3 (EP)
Inventor: CAPPOZZO DOMENICO
IPC: B07B1/15
Filed: 2000-11-28
Abstract: The invention is a new screen with rollers (1) for sorting solid waste,
each roller comprising an axis (1.1) with plates (1.2) parallel to one another
and perpendicular to the axis itself, wherein between the rollers
of the same axis there is an anti-clogging element (1.3) in the shape of
a cylindrical tube, free to travel and substantially parallel to the
axis, and wherein the diameter of said anti-clogging element in
the shape of a cylindrical tube is longer than the axis and shorter
than the diameter of the plates. The edge of said parallel plates (1.2) is
provided with a strip (1.21) perpendicular to the plate itself, or a with an
inclined double strip, so that the plate has arrow-shaped or T-shaped
section along its entire perimeter. The plates may have
polygonal, circular or elliptic section.