baber/WOPTO huggingface dataset:
Patent DE-112015006591-B4 (DE)
Title: sStromsensor
Inventor: SHIMIZU YASUHIRO
IPC: G01R15/20
Filed: 2015-06-29
Granted: 2021-09-16
Abstract: Stromsensor (100, 200, 300), der folgende Merkmale aufweist:einen Primärleiter (110, 210, 310, 310a), durch den ein zu messender Strom fließt; undeinen ersten Magnetsensor (120a) und einen zweiten Magnetsensor (120b), die jeweils ausgebildet sind, um eine Intensität eines Magnetfelds zu erfassen, das durch den Strom erzeugt wird, der durch den Primärleiter (110, 210, 310, 310a) fließt,wobei der Strom in zwei Flusskanäle umgeleitet wird und in einer Längenrichtung des Primärleiters (110, 210, 310, 310a) durch den Primärleiter (110, 210, 310, 310a) fließt, dadurch gekennzeichnet, dassder Primärleiter (110, 210, 310, 310a) einen Bogenabschnitt (111) aufweist, der sich in der Längenrichtung erstreckt, während er gebogen ist und dabei in einer Dickenrichtung des Primärleiters (110, 210, 310, 310a) vorragt, und einen der beiden Flusskanäle bildet,der erste Magnetsensor (120a) und der zweite Magnetsensor (120b) in einer Breitenrichtung des Primärleiters (110, 210, 310, 310a) angeordnet sind,der erste Magnetsensor (120a) an einer Innenseite des Bogenabschnitts (111) platziert ist und sich an einer Seite einer unteren Oberfläche des Primärleiters (110, 210, 310, 310a) befindet,der zweite Magnetsensor (120b) sich an einer Seite einer Oberfläche eines Abschnitts des Primärleiters (110, 210, 310, 310a) befindet, der den anderen der beiden Flusskanäle bildet, undsowohl der erste Magnetsensor (120a) als auch der zweite Magnetsensor (120b) ein Magnetfeld in der Breitenrichtung erfasst.
Patent DE-112016000289-B4 (DE)
Title: Zusammengesetze Filtervorrichtung
Inventor: KANAZAWA TOMIO
IPC: H03H9/25
Filed: 2016-01-04
Granted: 2023-03-23
Abstract: Zusammengesetzte Filtervorrichtung (1), umfassend:
 ein erstes Filter (2) und
 mehrere zweite Filter (12A, 12B), die unterschiedliche Durchlassbänder haben, wobei
 ein Endabschnitt des ersten Filters (1) und jeweils ein Endabschnitt der mehreren zweiten Filter (12, 12B) mit einem gemeinsamen Anschluss verbunden sind,
 das erste Filter (2) ein piezoelektrisches Substrat (3), das aus LiNbO 3  besteht, eine IDT-Elektrode (4), die auf dem piezoelektrischen Substrat (3) gebildet ist, und eine dielektrische Schicht (6) aufweist, die auf dem piezoelektrischen Substrat (3) gebildet ist, um die IDT-Elektrode (4) abzudecken,
 das erste Filter (2) eine Grundwelle einer Rayleigh-Welle verwendet,
 ein Durchlassband des ersten Filters (2) in einem Frequenzband eingerichtet ist, das niedriger ist als jedes der Durchlassbänder der zweiten Filter (12A, 12B), und
 die Durchlassbänder der mehreren zweiten Filter (12A, 12B) in Frequenzbändern eingerichtet sind, die niedriger sind als eine Frequenz einer Längswelle von Rayleigh-Wellen des ersten Filters (2).
Patent SK-280339-B6 (SK)
Title: Liquid fabric care compositions
Inventor: COFFINDAFFER TIMOTHY W
IPC: C11D3/00
Filed: 1991-07-08
Abstract: This invention relates to liquid fabric care compositions comprising a silicone and a fabric softener, said fabric softener is present at a level of from about 2 to 35% by weight of the total composition, wherein said fabric softener is selected from the group consisting of quaternary ammonium compounds, fatty amine fabric softening compounds, fatty amide compounds, fatty acids, fatty alcohols, and the mixtures thereof. The microemulsified amine functional silicone has an average molecular weight of from about 1,000 to about 100,000; and the weight ratio of microemulsified amine functional silicone to fabric softener is from about 17 : 1 to about 1 : 350. A particle size of said silicon is less than 0.14 micrometers.
Patent CZ-283669-B6 (CZ)
Title: Two-part half-finished product for coins
Inventor: SEUSTER EGON
IPC: B44B5/00
Filed: 1993-04-01
Abstract: The invention relates to a bimetallic blank for coins, medallions, tokens, gaming chips and the like, consisting of an inner disc (1) of a first metal or of a metal alloy which is pressed into the central aperture of an outer ring (2) of a second metal or of a second metal alloy, the disc (1) being provided with obliquely extending indentations (5) on its outer edge (4). <IMAGE>
Patent CZ-298467-B6 (CZ)
Title: Metering device for metering predetermined amount of particulate substance Metering method and metering apparatus
Inventor: OLSSON BERT-AKE
IPC: A61M15/00
Filed: 1997-08-14
Abstract: In the present invention, there is disclosed a metering device for metering a predetermined amount of a particulate substance, comprising: a body member (2) defining a metering chamber (9); an unbroken inflow path having an inlet (6) and leading to the metering chamber (9), an outflow path having an outlet (8) and leading from the metering chamber (9); and a reservoir (30) connected to the inflow path inlet (6). Said inflow path includes a first channel (10) that is extended downwards from the inlet (6) and is coaxial to an axis (4), and a second channel (12) extended at an angle {beta}relative to said axis (4) of rotation so that the second channel (12) is inclined downwards in filling state and upwards in emptying state. There is also described a method of such metering using a metering apparatus having at least two the above-described metering devices.
Patent CZ-284926-B6 (CZ)
Title: Derivatives of 25-carboxylic acid in a series of d vitamin, pharmaceutical preparations in which the derivatives are comprised as well as their use in the preparation of medicaments
Inventor: STEINMEYER ANDREAS
IPC: C07C401/00
Filed: 1993-10-06
Abstract: New 25-carboxylic acid derivatives of general formula I,    <IMAGE>  (I)  R19 and R19a each mean a hydrogen atom or together form an exocyclic methylene group, R21 and R21a independently of one another mean a hydrogen atom, a chlorine or fluorine atom, an alkyl group with 1 to 4 carbon atoms, together a methylene group, together with quaternary carbon atom 20 mean a 3-7 membered, saturated or unsaturated carboxylic ring, Y preferably means a derivatized carboxyl radical, and the other substituents have the meanings indicated in the description as well as process for their production, are described. The new compounds have vitamin D activity as well as proliferation-inhibiting and cell-differentiating effects and are suitable for the production of pharmaceutical agents.
Patent CZ-281468-B6 (CZ)
Inventor: RABE WOLFGANG DIPL CHEM
IPC: C10J3/46
Filed: 1995-04-10
Abstract: Problém řešení spočívá v tom, že se mají zhodnotit smíšené a znečištěné odpady plastů procesem zplyňování. Smíšené a znečištěné odpady plastů se odděleně zkapalněné nebo ve směsi s jinými uhlovodíky a/nebo jemnozrnnými minerálními a/nebo organickými pevnými zbytkovými látkami vnáší přes jednu nebo více dmychacích trubek hořáku do zplynovače, pracujícího ve vznosu, a nechají se zreagovat na plyny obsahující CO a H.sub.2.n., přičemž se pevné minerální složky převedou na strusku. Oblasti použití jsou mimo hospodářství s odpady duální systém a průmysl plastů a chemický průmysl.ŕ
Patent CZ-278850-B6 (CZ)
Title: Process of treating secondary pentane-hexane petroleum oil fractions
Inventor: SVAJGL OLDRICH ING DRSC
IPC: C07C5/22
Filed: 1992-07-01
Abstract: A process of treating secondary petroleum light oil fractions gained from a reformatsky reaction, pyrolysis or hydrocracking, in the presence of petroleum benzene by hydro-refining in mixed sulphidic catalysts, isolation of C5-C6-fraction by distillation and their joint isomerization in a chloride bifunctional catalyst to a high-octane compound of automobile petrol or raw material for production of solvents.
Patent CZ-278739-B6 (CZ)
Title: Plastic closure, particularly for milk bottles
Inventor: KLIMES JIRI ING
IPC: B65D41/32
Filed: 1992-07-13
Abstract: Plastic closure, particularly for milk bottles, where the clip-on head (1) of the plastic closure is formed by a bottom and cylindrical flange with tear-off band (6) with tear-off projection (3), having the flange of the head (1) on the outer side in the area of the tear-off band (6) equipped with solid symmetrical projection (2) with the first hole (4). The tear-off band (6) has a tear-off projection (3) of asymmetrical form, whereas the second hole is formed in the tear-off projection (3).<IMAGE>
Patent CZ-279355-B6 (CZ)
Title: Apparatus for the determination of sediments in settling tanks
Inventor: STRNAD JOSEF ING
IPC: B01D21/32
Filed: 1990-06-06
Abstract: The apparatus consists of an arm (1), the construction (5) of the scraping mechanism, blades (3, 4), a force sensor (6) and weighting (7). The essence of the invention is that the arm (1), fixed to whose perpendicular part are the blades (3, 4), is hinge suspended on the construction (5) of the scraping mechanism and its horizontal part is equipped with weighting (7) and bears on the force sensor (6), which is also fixed to the construction (5) of the scraping mechanism. The vertical and horizontal parts of the arm (1) are connected by a batter brace.<IMAGE>
Patent CZ-281274-B6 (CZ)
Title: Unsaturated hydroxyalkyl quinolinic acids and pharmaceutical preparation based thereon
Inventor: BELLEY MICHEL L
IPC: A61K31/41
Filed: 1991-10-11
Abstract: Compounds having the formula I: <CHEM> are leukotriene antagonists and inhibitors of leukotriene biosynthesis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents. They are also useful in treating angina, cerebral spasm, glomerular nephritis, hepatitis, endotoxemia, uveitis, and allograft rejection.
Patent CS-277387-B6 (CS)
Inventor: MAJLING JAN DOC ING CSC
IPC: C04B35/00
Filed: 1991-11-28
Abstract: Guličky z anorganických práškových materiálov
sa pripravía zo suspenzie anorganického keramického
prášku vo vodě, alebo alkohole o teplote
45 až 80 °C s obsahom 3,0 až 60 % hmot.
prášku, 0,4 až 2,6 % hmot. polysacharidu, ktorý
má schopnost přechodu sól-gél v dósledku
změny teploty. Suspenzia sa disperguje do kvapaliny
nemiešatel’nej s vodou aiebo alkoholom,
ktorej teplota je nižšia, ako teplota přechodu
sól-gél použitého polysacharidu. Vytvořené guličky
sa oddelia, premyjú a teplotně spracujú.
Patent CS-276029-B6 (CS)
Inventor: KACZMARSKI JANUSZ ING
IPC: C22C38/04
Filed: 1989-10-31
Abstract: Řešeni ae týká austenitické manganové
oceli. Ocel obsahuje Dodle hmotnosti
0,6 až 1,0 % uhlíku, 12,0 až 16,5 %
manganu, stopy až 0,6 % křemíku, 0,02
až 0,5 % titanu, do 0,05 % fosforu, do
0,04 % siry, 1,8 až 2,2 % molybdenu a
zbytek železo.
Patent CZ-307492-B6 (CZ)
Title: A solid form of tapentadol maleate and a method of its preparation
Inventor: ČERNÝ JOSEF
IPC: C07C215/54
Filed: 2014-02-04
Abstract: The present solution relates to tapentadol maleate Form A of formula I, exhibiting the following characteristic reflections in an X-ray powder diffraction pattern, measured with the use of CuKα radiation: 10.7; 11.6; 16.0; 17.1; 20.4; 24.2 and 25.9 ± 0.2° 2-theta, the main onset temperature of 90.0°C when measured with the use of Differential Scanning Calorimetry (DSC), and the absorption peaks at 3217, 2971, 2874, 1705, 1619, 1587, 1534, 1484, 1351, 1250, 1188 a 1075 cm-1 in the IR spectrum. A method of preparation of a compound of formula I and its use for the preparation of a pharmaceutical composition.
Patent CZ-280976-B6 (CZ)
Inventor: MILLER GERT DIPL-ING
IPC: G05D11/00
Filed: 1994-08-29
Abstract: Aby se zabránilo tomu, že je zařízením k vydávání směsi paliva a oleje v předem stanoveném poměru směsi místo oleje dopravován vzduch, přičemž palivo a olej jsou k dispozici v oddělených nádržích (1, 2), a jsou prostřednictvím čerpadel (9, 18) a pístových měřidel (11, 21) přiváděny do společného výstupního potrubí (14), přičemž obě pístová měřidla (11, 21) jsou spojena s regulačním ústrojím (25) a za olejovým čerpadlem (18) je uspořádáno olejové vratné potrubí (28) s přepadovým ventilem (28), navrhuje se, před pístovým měřidlem (21) oleje uspořádat pro olej v podstatě nepropustnou plynovou vypouštěcí trysku (32)ŕ
Patent CZ-286859-B6 (CZ)
Title: Stationary phase for chromatography
Inventor: CABRERA KARIN
IPC: G01N30/52
Filed: 1994-02-18
Abstract: In the present invention there is disclosed a porous ceramic shaped piece consisting of compounds containing calcium phosphate, such as hydroxyapatite, further silicon dioxide, aluminium oxide, silicon carbide, silicon carbonyl, zirconium oxide, titanium dioxide and boron nitride, whose pore areas are modified by silane derivative of the general formula I or by siloxane {SiXinRe1 i(3-a)Re2}, wherein X represents a methoxy group, an ethoxy group or a halogen atom, Re1 represents an alkyl group containing 1 to 5 carbon atoms, a is the number 1, 2 or 3, Re2 represents the group being selected from a group comprising (a) a non-substituted or substituted alkyl or aryl group, such as a-octadecyl, a-octyl, benzyl or cyanopropyl group, (b) anionic or acid radicals such as carboxypropyl group, (c) cationic or basic radicals such as aminopropyl, diethylaminopropyl or triethylammoniumpropyl group, (d) hydrophilic radicals such as (2,3-dihydroxypropyl)oxypropyl group, (e) activated radicals capable to form bonds such as (2,3-epoxypropyl)-oxypropyl group.
Patent CZ-285672-B6 (CZ)
Title: Pharmaceutical preparation containing lipid system and process for preparing thereof
Inventor: NYQVIST HAKAN
IPC: A61K47/24
Filed: 1993-03-26
Abstract: The present invention relates to pharmaceutical compostions containing a defined lipid system of at least two lipid components where at least one of the lipid components is amphiphatic and polar and one is nonpolar wherein the pharmaceutically active compound is a heparin or a fragment thereof. In the compositions a water containing solvent also is included in such an amount that discrete lipid particles are present, and said compositions can be adapted to various administration forms such as rectal, oral, buccal, transdermal etc.
Patent CZ-283364-B6 (CZ)
Title: Circuit arrangement for measuring three-phase current peaks
Inventor: POSPICHAL LADISLAV ING
IPC: G01R19/04
Filed: 1995-10-19
Abstract: The first current transformer (1) of the connection is connected through a protective circuit (12) to the first two-way rectifier (13) and the second current transformer (21) is connected through a second protective circuit (22) to the second two-way rectifier (23) and the third current transformer (31) is connected through a third protective circuit (32) to the third two-way rectifier and the microprocessor (1) with the supporting and communication circuits in an inactive status switches the first supply switch (14), the second supply switch (24) and the third supply switch (34) by which the output signals of the two-way rectifiers after filtering by the first filtering capacitor (92) and possible restriction in the restricting Zener diode (10) supplies through the first sum diode (03) and the second filtering capacitor (05) supplies the microprocessor (1). If the voltage on the first filtering capacitor (02) is not sufficiently high, the supply is ensured by an accumulator (06) through the second sum diode (04). The microprocessor (1) is informed about the status of the supply by the comparator (7) of the supply voltages the inputs of which are connected to the accumulator (06) and to the first filtering capacitor (02). According to the status of the supply the microprocessor (1) controls the switch (6) of the positive voltage and the converter (5) of the negative voltage. When measuring the first current the first supply switch (14) is disconnected and the first measuring switch (15) is on so that on the first resistance (102) a voltage is created  which is transferred through a compensating diode (101) and the first peak diode (103) to the first capacitor (104) and its part is compared through the first potentiometer (105) in the first comparator (16) with the compensating voltage created in the filter (4) of the compensating voltage of the source (2) of the reference voltage and the switch (3) of the reference voltage by which the microprocessor (1) is controlled which is informed about the status of the compensation from the output of the first comparator (16). After completion of the compensation of the first current the second  and then the third measured current is compensated.<IMAGE>
Patent CZ-280710-B6 (CZ)
Title: Process and apparatus for cosmetic treatment of a human body by the removal of fat tissue
Inventor: ROSSO LUCIANO
IPC: A61B18/12
Filed: 1993-05-21
Abstract: Method and apparatus for the cosmetical treatment of the human body through removal of the adipose tissue masses by means of the combined effect of the infiltration of a diluent solution and the application of a fluidizing perturbation within the adipose tissue (A), so as to enable the subsequent extraction thereof. The fluidizing perturbation is generated by the emission of electromagnetic waves by means of a pair of electrodes, at least one of which is directly associated to a tubular perforator (9, 10) through which the diluent solution is infiltrated and/or the fluidized adipose tissue is extracted.
Patent SK-282339-B6 (SK)
Title: Antiviral ethers of aspartate protease substrate, process for their production and pharmaceutical preparations containing them
Inventor: BOLD GUIDO
IPC: C07D213/65
Filed: 1995-10-17
Abstract: Antiretroviral compounds (which are effective, for example, against HIV) of the formula I <CHEM>  in which R1 is an acyl radical lower-alkoxy-lower-alkanoyl whose lower alkoxy radical is unsubstituted or is substituted by halogen, phenyl, lower alkoxy or a heterocyclic radical selected from piperidinyl, pyrrolidinyl, tetrahydropyranyl, tetrahydrofuranyl, thiazolidinyl, thiazolyl, indolyl or 4H-1-benzopyranyl which is unsubstituted or substituted by oxo, hydroxyl, amino, lower alkyl, lower-alkoxycarbonyl and/or phenyl-lower-alkoxycarbonyl; lower alkanoyl which is unsubstituted or is substituted by one of the said unsubstituted or substituted heterocyclic radicals; arylcarbonyl or heterocyclylcarbonyl which are substituted by heterocyclyl or heterocyclyl-lower-alkyl; phenyl-lower-alkanoyl which is substituted by hydroxyl and lower alkyl; or arylsulfonyl; or the residue of an amino acid which is defined in accordance with the description (and which may be acylated on the amino nitrogen by one of the abovementioned acyl radicals); R2 and R3 are in each case cyclohexyl, cyclohexenyl, phenyl, naphthyl or tetrahydronaphthyl which are unsubstituted or substituted by lower alkyl, phenyl, cyanophenyl, phenyl-lower-alkyl, halogen, halo-lower-alkyl, cyano, hydroxyl, lower alkoxy, phenyl-lower-alkoxyl, pyridyl-lower-alkoxy, lower-alkoxy-lower-alkoxy, lower-alkoxycarbonyl-lower-alkoxy, carboxyl-lower-alkoxy, hydroxyl-lower-alkoxy, carbamoyl-lower-alkoxy, cyano-lower-alkoxy, and phenyl-lower-alkanesulfonyl which is unsubstituted or substituted by halogen; R4 is lower alkyl, cyclohexyl or phenyl; and R5 is lower alkyl; and n is 1 or 2, or salts thereof, are novel.
Patent SK-283640-B6 (SK)
Title: Container for transport and store of radioactive material and process for its production
Inventor: GLUSCHKE KONRAD
IPC: G21F5/00
Filed: 1998-06-09
Abstract: The invention relates to a method for producing a container designed to transport and store radioactive material. The invention further relates to a container, which is used to transport and store radioactive material. First and foremost, claim is laid to the selection of a heavy concrete and a special technique for inserting the heavy concrete between metal walls.
Patent SK-288957-B6 (SK)
Title: Quick acting vise
Inventor: BANIARI VLADISLAV
IPC: B25B1/08
Filed: 2018-04-03
Abstract: The quick acting vise consists of a handle that is slidably mounted in a rod with a thread passing through the movable jaw. The threaded rod (2) extends through a axially divided upper part (6) of the spindle nut and through a axially divided lower part (5) of the spindle nut, located in the hollow body of a fixed jaw (4). The compression springs (7) are provided between the axially divided upper part (6) of the spindle nut and the axially divided lower part (5) of the spindle nut and between the fixed jaw (4). The withdrawal tappets (11) coupled to a push lever (12) are inserted along the flanks between the axially divided upper part (6) of the spindle nut and the axially divided lower part (5) of the spindle nut. The withdrawal tappets (11) are stored in the body of the fixed jaw (4). In the upper part (6) of the axially divided breaker nut is located a cam (9) with a spring (10) passing through the cover (8) of a cam (9) abutting against to the thread rod (2) to correctly the threads lock-on of the axially divided spindle nut to the thread rod (2).
Patent SK-278511-B6 (SK)
Title: Corrosion resistance shooting nail for hard materials
Inventor: SARTOR DIETMAR
IPC: F16B15/02
Filed: 1992-10-23
Abstract: This shooting nail is created with the shaft (1, 4, 7) containing the head (1a, 4a, 7a) passing through the stop template (2, 6, 8), while this template is exceeding the shaft (1, 4, 7), as for the diameter. The shaft (1, 4, 7) material hardness is greater, than the material closed to the stop template (2, 6, 8) is. The shaft (1, 4, 7) is made based on the austenitic steel alloyed with the use of nitrogen and this steel contains 2 up to 22 weight percent of Mn, 1 up 3 weight percent Mo, 0,2 up to 1,2 weight percent N, 15 up to 26 weight percent of Cr an 0 up to 17 weight percent of Ni. On the shaft (1, 4, 7), there is located the g guiding template (3, 5, 9) being able of advance, and the outer diameter of that is the same, as the outer diameter of the stop template (2, 6, 8) is. On the stop template (8), there is a threat (8a) created, that can be placed on the mantel closed to the stop template (8).
Patent SK-278327-B6 (SK)
Title: 4-aryl-1,4-dihydropiridine-3,5-dicarboxylates and pharmaceutical agents containing them
Inventor: BORTHWICK ALAN D
IPC: A61P9/00
Filed: 1991-12-23
Abstract: 4-aryl-1,4- dihydropiridine-3,5-dicarboxylates with a general formula (I), where the symbols R1 and R4 mean independent of each other alkyl with 1 up to 4 carbon atoms, the symbols R2 and R3 mean independent of each other alkyl with a direct or branched chain with 1 up to 6 carbon atoms, or the interrupted oxygen atom and R5 means alkyl with 1 up to 13 carbon atoms with a direct or branched chain or cykloalkyl with 5 up to 8 carbon atoms, or it can be substituted by the alkyl rest with 1 up to 3 carbon atoms. This invention also is dealing with the pharmaceutical means containing the above mentioned substances, being suitable for healing of heart and arterial diseases.
Patent CZ-298235-B6 (CZ)
Title: Process for preparing N-[5-(diphenylphosphinoylmethyl)-4-(4-fluorophenyl)-6-isopropylpyrimidin-2-yl]-N-methyl methane sulfonamide
Inventor: BRIEDEN WALTER
IPC: C07K/
Filed: 2000-03-07
Abstract: N-[5-(diphenylphosphinoylmethyl)-4-(4-fluorophenyl)-6-isopropylpyrimidin-2-yl]-N-methyl methane sulfonamide of the general formula I is prepared by reacting [4-(4-fluorophenyl)-6-isopropyl-2-(N-methyl-N-methylsulfonyl-aminopyrimidin-5-yl]methanol with chlorodiphenylphosphine. The compound of the general formula I is an intermediate used in the synthesis of pharmaceutically active compounds, particularly HMG-Co A reductase inhibitors.
Patent CZ-298563-B6 (CZ)
Title: Traveling staircase or movement pavement
Inventor: LUDWIG REINER
IPC: B66B23/02
Filed: 2003-03-04
Abstract: The present invention relates to a traveling staircase or movement pavement being provided with a step/pallet chain (10) for driving a belt of steps or pallets, and at least one haul-back wheel (12) by means of which the step/pallet chains (10) are driven and which is driven from its side by a drive motor via a countershaft transmission. Said haul-back wheel (12) is fixedly coupled with a driving wheel (22) that re-routes an auxiliary chain (26) circulates between a countershaft pinion (28) and the driving wheel (22). The driving wheel (22), the auxiliary chain (26) and the countershaft pinion (28) form the countershaft transmission (24), and said countershaft transmission (24) compensates for polygonal effect. The countershaft transmission (24) has a reverse pinion (30) to ensure independent setting of the direction of branches (32, 34) and thus achieving optimal compensation of the polygonal effect, particularly when running direction is changed.