baber/WOPTO huggingface dataset:
Patent IE-40226-B1 (IE)
Title: M-dioxane-5-methylamine analgesics
IPC: C07C69/618
Filed: 1973-12-04
Abstract: The m-dioxanes correspond to the formula I <IMAGE> the meanings of the symbols being given in Patent Claim 1. The compounds, as well as those which have been partially demethylated at the amine nitrogen, exhibit an excellent analgesic action without producing addiction in the treated patient. The compounds are prepared by reacting a ketone of the formula II <IMAGE> with an amine of the formula <IMAGE> and reducing the resulting enamine catalytically in the presence of hydrogen to give a compound of the formula I.
[GB1455997A]
Patent IE-53937-B1 (IE)
Title: 7-bromo-5-(2-halophenyl)-1h-2,3-dihydro-1, 4-benzodiazepine compounds, method for their manufacture and pharmaceutical compositions containing them
IPC: C07D243/16
Filed: 1982-09-29
Abstract: Disclosed are 7-bromo-5-(2-halophenyl)-1H-2,3-dihydro-1,4-benzodiazepines of the formula I    <IMAGE>  I  in which R1 is a hydrogen atom or a lower alkoxy or alkanoyloxy radical and R2 is a halogen atom. The compounds possess psychopharmacological, and especially anti-aggressive properties. To manufacture compounds of formula I, corresponding 2-halomethyl-7-bromo-5-(2-halophenyl)-1H-2,3-dihydro-1,4-benzodiazepines are cyclized to corresponding 7-bromo-1,2-methylene-5-(2-halophenyl)-1H-2,3-dihydro-1,4-benzodiazepines and in these the aziridine ring is opened through treatment with a lower alcohol or a lower carboxylic acid in the presence of a Lewis acid.
Patent IE-40311-B1 (IE)
Title: N-(3-(1'-hydroxyimino)alkyl-4-(3-amino-2-hydroxy)-propoxy-pheny) ureas, methods for their prparation and compositions containing them
IPC: C07D295/195
Filed: 1974-12-16
Abstract: Phenoxypropylamine derivatives of the general formula: R NH-CO-N ANGLE R1 (1) O-CH2-CH-CH2-NH-R3 ¦ OH in which R is a hydrogen atom or a straight-chain or branched alkyl group containing up to 10 carbon atoms, R1 is a hydrogen atom, a straight-chain or branched alkyl group containing up to 10 carbon atoms or a cyclopentyl, cyclohexyl, benzyl or phenyl group or R and R1 taken together form a pentamethylene-(1,5), tetramethylene-(1,4), 2-azapentamethylene-(1,5), 3-azapentamethylene-(1,5) or 3-oxapentamethylene-(1,5)-group, R2 is a hydrogen atom or an alkyl group containing up to 6 carbon atoms or a benzyl or phenyl group, R3 is a branched alkyl group containing 3 to 6 carbon atoms, a cyanoalkyl group containing up to 6 carbon atoms or a cycloalkyl group containing 3 to 7 carbon atoms and R4 is a hydrogen atom, an alkyl group containing up to 6 carbon atoms or a benzyl group, and the pharmaceutically-acceptable salts thereof having a cardioselective beta -blocking action.
[US3983169A]
Patent IE-52006-B1 (IE)
Title: Polymers of diallyl ammonium monomers pharmaceutical compositions thereof
IPC: C08G73/06
Filed: 1981-12-07
Abstract: Polymers containing 55 to 90% of units of the formula (A) :wherein R<sup>1</sup> is a hydrogen atom or an alkyl group of 1 to 3 carbon atoms; and 10 to 45% of units of the formula (B) and (C):wherein R<sup>2</sup> is a hydrogen group of 5 to 19 carbon atoms, for example n-C<sub>11</sub>H<sub>23</sub>, R<sup>3</sup> is a hydrogen atom or an alkyl group of 1 to 3 carbon atoms, R<sup>4</sup> is a hydrocarbon group of 5 to 19 carbon atoms, for example n-C<sub>11</sub>H<sub>23</sub> and X<sup>-</sup> is an anion and which contain at least 10% of units of formula (C) and are free from polymeric species having a molecular weight of less than 10,000 are described. The polymers possess antimicrobial activity against common pathogens. Isotonic aqueous solutions containing 0.002 to <sub>0</sub>.<sub>0</sub>25% of the polymer are suitable for the sterilisation of contact lenses for example by immersion of the lens in the solution overnight. Hydrophilic ointments containing from 0.002 to 0.25% of the polymer are suitable for the treatment of bacterial infection of lesions of the skin such as burns and ulcers.
Patent JP-3062171-B1 (JP)
Title: 産業機械の油圧装置
IPC: F15B11/08
Filed: 1999-01-11
Granted: 2000-07-10
Abstract: 【要約】
【課題】  シリンダ等の油圧機器におけるホールディン グ弁では、流量制御ができないので作業装置をゆっくり 下げるようなスピード制御ができない。
【解決手段】  ホールディング弁Ｈに、メイン部Ｈａと このメイン部Ｈａを制御するセレクタ部Ｈｂとを設け、 メイン部Ｈａに、シリンダＳ側の油の圧力と、このシリ ンダ側の油の一部を反シリンダ側に作用させた油の圧力 との圧力バランスでスライドするポペット弁Ｖａを設 け、セレクタ部Ｈｂに、ポペット弁Ｖａの反シリンダ側 油の一部を流出させるポペット弁Ｖｂを設けるととも に、このポペット弁Ｖｂの流量を制御するパイロット弁 Ｐを設け、このパイロット弁Ｐで反シリンダ側油の流出 量を制御してポペット弁ＶａをシリンダＳ側圧力と反シ リンダＳ側圧力とがバランスする位置にスライドさせて メイン部Ｈａを流れる油流量を制御する。
Patent LU-100995-B1 (LU)
Title: Balancing valve
Inventor: REY CHARLOTTE
IPC: F24D19/10
Filed: 2018-11-12
Granted: 2020-05-12
Abstract: The present invention proposes a balancing valve, a fluid network with such a balancing valve, and a method of maintaining such a balancing valve. The balancing valve comprises a housing having a main fluid passage extending along a main flow axis, a valve body disposed within the housing in the fluid passage, wherein the valve body has a first through hole forming a first fluid passage with a variable first fluid passage cross section. The valve body has a second through hole distinct from the first through hole and forming a second fluid passage in the valve body. The first fluid passage is a main fluid passage and the second fluid passage is a by-pass passage.
Patent LU-101711-B1 (LU)
Title: Multi-channel impact-resistant intelligent-constant-decelaration hydraulic braking system
Inventor: KOU ZIMING
IPC: F16D66/00
Filed: 2020-03-30
Granted: 2021-03-04
Abstract: The present invention discloses a multi-channel impact-resistant intelligent-constant-deceleration hydraulic braking system, and relates to the field of safety braking control for mine hoist systems. A technical point of the braking system is that the braking system includes a braking circuit formed by a constant-deceleration hydraulic system, a constant-deceleration electrical closed-loop control system, and a detection and feedback apparatus. The constant-deceleration hydraulic system is provided with N+1 independent complete oil return channels, where N is a positive integer greater than or equal to 3. The oil return channels are disposed in parallel to form parallel independent braking circuits, that is, are "multi-channel" and do not have a "common output point". The oil return channel includes a backup oil source, an electro-hydraulic signal conversion and amplification component, an operating mode switching apparatus, and an execution component that are sequentially connected. The oil return channels include one backup channel and N working channel. Functions such as constant-deceleration braking, impact and vibration limiting, rope slip prevention, derailing prevention, and overwinding prevention can be safely and reliably achieved when a mine hoist system normally stops, performs operation braking or performs safety braking, thereby greatly reducing an accident rate.
Patent LU-102422-B1 (LU)
Title: Seed capturing device for saline-alkali bare land in coastal beach and its application
Inventor: LIU JUANJUAN
IPC: A01G17/00
Filed: 2021-01-18
Granted: 2021-08-04
Abstract: A seed capturing device for in saline-alkali bare land in coastal beaches and its application. The seed catching device for coastal beach saline-alkali bare land includes a fixed support in a trumpet shape, a top is arched, the other three sides are flat, and a bottom edge of the fixed support is evenly installed with inserted nails; a capturing net is constructed in the fixed support, and an upper side of an front end of the capture net is provided with a shed brim; the bottom of the capturing net and a noninterference part of the land are evenly distributed with biochar packs covered with soil , and the total area of the biochar pack is 8-15% area of the bottom of the capturing net. The present disclosure significantly changes the roughness of ground, regulates the migration of water and salt, improves the soil monomer nutrient element conditions.
Patent LU-504222-B1 (LU)
Title: Floating photovoltaic array cleaning system on water and its working method
Inventor: LI HANMIN
IPC: H02S40/10
Filed: 2023-05-12
Granted: 2023-11-14
Abstract: The present invention relates to a floating photovoltaic array cleaning system on water and its working method, wherein the cleaning system includes a cleaning mechanism and a driving mechanism, the cleaning mechanism is a plurality, set in rows or columns; each cleaning mechanism includes a horizontal rod, a longitudinal rod and bristles, the horizontal rod is able to move along the axially for linear reciprocating motion; longitudinal rod for a plurality of, axis are inclined set; a plurality of longitudinal rod along the axial axis of the horizontal rod evenly distributed, one end respectively with the horizontal rod fixed connection; the bottom of each longitudinal rod along the axial axis of the longitudinal rod evenly fixed with a plurality of bristles; drive mechanism can be connected with any cleaning mechanism of the horizontal rod, to drive the horizontal rod for linear reciprocating motion.
Patent NO-300320-B1 (NO)
Inventor: AMARIGLIO HENRI
IPC: C07C2/76
Filed: 1992-03-05
Abstract: The invention relates to a method for converting methane into higher hydrocarbons. According to the invention, a catalyst comprised essentially of a metal belonging to the series of transition metals and of a carrier which is comprised particularly of a refractory metal oxide is subjected to a methane flow at a temperature comprised between 100 DEG  C. and 300 DEG  C. approximately, with a contact time of at least one second, and to a hydrogen flow at a temperature comprised between 100 DEG  C. and 300 DEG  C. with a contact time of at least one second. The method of the invention is particularly usable in chemical engineering.
Patent NO-304763-B1 (NO)
Inventor: TEODORIDIS VIRON
IPC: H04W88/02
Filed: 1993-08-02
Abstract: The timepiece includes a time keeper displaying the hour (4) and the minute (5), a receiver of radio messages which can be read on a display (7) and a control device (2) including a ball (1) which can be rolled manually in a first direction (Y) for which the received messages can be displayed one after the other and in a second direction (X) for which at least functions of engagement, disengagement or entry into a particular functional mode may be chosen. The ball can also be pressed in a third direction (Z) for which the displayed message can at least be erased or protected. 
 <IMAGE>
Patent NO-306558-B1 (NO)
Inventor: HOFFMANN ULRICH
IPC: C10G1/00
Filed: 1994-04-21
Abstract: A process for cracking polymers is proposed, in which the polymers used are cracked by the action of ultrasonics and the cracked products are converted in a directly following reaction to the compounds which can be isolated as the end products of the process. In this reaction, catalytic hydrogenation, saponification or hydrolysis, ammonolysis and alcoholysis are preferentially used. <IMAGE>
Patent NO-307841-B1 (NO)
Inventor: HAUTALA JOUKO
IPC: D21B1/32
Filed: 1996-11-12
Abstract: A method for defibering recycled paper into pulp to be reused. In the method, the recycled paper is defibered and coarse-screened in a pulper comprising a fixed sorter part, whereupon a coarse-screened pulp from which the greatest contaminants have been removed is obtained from the pulper. The pulp received from the pulper is taken directly to LC-cleaning and fine screening.
Patent NO-324904-B1 (NO)
Inventor: NERI DARIO
IPC: A61P43/00
Filed: 1998-11-23
Abstract: According to the present invention there is provided a specific binding member which is specific for and binds directly to the ED-B oncofoetal domain of fibronectin (FN). The invention also provides materials and methods for the production of such binding members.
Patent NO-318787-B1 (NO)
Inventor: GILLESSEN HUBERT JEAN MARIE FR
IPC: C12N5/071
Filed: 1998-12-16
Abstract: The invention relates to a biologically active plant extract to be obtained by means of a method comprising the following steps of: a) pressing a vegetable material to pulp; b) subjecting the obtained pulp to a cold or hot treatment with an aqueous or organic solvent; c) removing the solvent until a determined degree of concentration is obtained; and d) optional further purifying of the thus obtained extract by one or more of the following methods; thermocoagulation, purification with ammonium sulphate, precipitation, chromatography on gel or ion-exchange resin.
Patent AT-521142-B1 (AT)
Title: Steckverschluss mit einem männlichen und einem weiblichen Teil
IPC: A44B11/25
Filed: 2018-06-25
Granted: 2019-11-15
Abstract: Männlicher Verschlussteil (3) für eine Steckverbindung, wobei der männliche Verschlussteil als ein im wesentlichen quaderförmiger Formteil ausgebildet ist und mindestens einen Verriegelungshaken (11) aufweist, wobei der Verriegelungshaken an einem Schlitten (1) vorgesehen ist, der innerhalb einer Kammer im männlichen Verschlussteil zwischen zwei Positionen verschieblich bewegbar ist, und wobei der Schlitten weiterhin einen Magneten (7) aufweist. Der weibliche Verschlussteil (2) ist als ein im wesentlichen rechteckiges Fach ausgebildet und weist mindestens einen Verriegelungshaken (12) auf, wobei es einen Magneten (8) oder einen metallischen Teil in einem Aufnahmefach (9) umfasst, welcher, wenn der männliche Verschlussteil im weiblichen Verschlussteil angeordnet ist, parallel neben einem Magneten im männlichen Verschlussteil positioniert ist.
Patent AT-518929-B1 (AT)
Title: Sensorband zur multi-parametrischen Herz-Lungen-Diagnostik
Inventor: HELMUT DR PFÜTZNER
IPC: A61B5/08
Filed: 2016-08-12
Granted: 2019-09-15
Abstract: Ein etwa 30 cm langes entlang der Aorta angebrachtes Sensorband (1) trägt am oberen und unteren Ende je zwei Hautelektroden (2) und (3) bzw. (5) und (6), sowie eine weitere mittlere (4). Mittels zweier Einpräge-Elektroden (2) und (6) wird im Rumpf ein hochfrequentes elektrisches Feld aufgebaut. Zwischen zwei Ableit-Elektroden (3) und (5) gegenüber der Mittelableit-Elektrode (4) werden zwei Spannungssignale abgeleitet. Sie werden in ihre jeweiligen respiratorischen und kardialen Komponenten zerlegt. Aus den respiratorischen Komponenten wird auf zeitliche Veränderungen der thorakalen bzw. abdominalen Atmung geschlossen, sowie auf eventuelle thorakal/abdominale Paradoxie, aus den kardialen auf die der Herzfrequenz und des Blutdrucks.
Patent AT-505226-B1 (AT)
Title: Gleitlack und damit hergestelltes lagerelement
Inventor: MERGEN ROBERT DIPL ING DR
IPC: C09D5/00
Filed: 2007-04-17
Granted: 2012-04-15
Abstract: Die Erfindung beschreibt Gleitlack mit einer Matrix aus einem Kunstharz, in dem zumindest ein Festschmierstoff und zumindest ein Zusatzstoff zur Erhöhung der Wärmeleitfähigkeit enthalten sind, wobei der Zusatzstoff eine Wärmeleitfähigkeit bei 20 °C von größer 100 Jm-1s-1K-1 und eine Härte von maximal 2500 % der Härte der Matrix aufweist. Der Zusatzstoff ist in zumindest zwei verschiedenen Partikelgrößenfraktionen enthalten, wobei Partikel mit einer mittleren Partikelgröße ausgewählt sind aus einer ersten Partikelfraktion mit einer unteren Grenze von 10 µm und einer oberen Grenze von 30 µm und einer zweiten Partikelfraktion mit einer unteren Grenze von 50 µm und einer oberen Grenze von 100 µm.
Patent BR-0005545-B1 (BR)
Inventor: LAGNIER ALAIN
IPC: B29L30/00
Filed: 2000-11-23
Abstract: A mold has parts together defining the external surfaces of a tire, first raised element(s) for forming a channel opening into a sidewall of the tire and second element(s) forming a cut opening into an internal or external surface of the tire. Together both elements define the number of orifices through which rubber can flow during molding. An Independent claim is included for the following: (a) A mold as above where the mold parts include two concentric shells forming the tire sidewalls and radially adjustable sectors forming the rolling surface. Preferred Features: The second elements form passages opening onto an outer surface of the tire and third elements form orifices opening onto the internal surface of the tire. The channel formed by the first element connects with orifices formed by the second and third elements. Each shell has two relatively rotatable concentric rings. The first elements are mounted on one of the rings.
Patent BR-0203761-B1 (BR)
Inventor: TARASINSKI NICOLAI
IPC: F16D48/06
Filed: 2002-09-13
Abstract: Method for controlling a coupling (16), especially a power take off coupling in which sensors (28, 30) are used to measure rotation velocity and the coupling slip is determined from the difference in rotation velocity before and after the coupling. The slip is continuously adjusted to a continuous value and from the coupling pressure a value is determined for the load that can be transferred by the coupling. An Independent claim is made for a device for controlling a hydraulically operated coupling, especially a power take off coupling.
Patent BR-PI0305557-B1 (BR)
Inventor: WELTER ROLAND
IPC: F15B7/00
Filed: 2003-07-17
Abstract: Hydraulic operating system comprises a master cylinder unit (10), a slave cylinder unit (12), a hydraulic line (14) connecting the two cylinder units, and a throttle valve (26) for changing the flow resistance between the cylinders of the master and slave cylinder units.  An Independent claim is also included for a device for connecting a tubular hydraulic line to a connection on a housing, especially in the above hydraulic system. Preferred Features: The throttle valve is operated by an actuator (18) controlled by a control device that is connected to a sensor determining the movement of a piston in at least one of the two cylinder units.
Patent BR-0307185-B1 (BR)
Inventor: KROPFELD SCOTT
IPC: B29K75/00
Filed: 2003-01-15
Abstract: The present invention describes a hollow structural body such as an automotive unibody or frame rail that is reinforced with a reinforcing material such as a polyurethane foam by inserting into a portion of the structural body a bulkhead-containing insert, which, in combination with the structural body at the place of insertion, creates a containment region for the reinforcing material. Uncured reinforcing material can then be added to the containment region and cured. The present invention solves a problem in the art by providing structural reinforcement to be easily and precisely placed within the structural body to provide, for example, enhanced crash resistance or improvements in acoustical properties.
Patent BR-PI0318626-B1 (BR)
Title: comparador de sinal positivo e método
Inventor: HARRISON THOMAS HICKENLOOPER
IPC: B61L15/00
Filed: 2003-12-01
Abstract: "comparador de sinal positivo e método". descreve-se um sistema comparador de sinal positivo (100) que compreende um transceptor (140) localizado em um trem para transmitir um sinal de interrogação para um dispositivo de sinalização de via (190) e receber um sinal de resposta do dispositivo de sinalização de via (190), um dispositivo de entrada, através do qual um maquinista insere um sinal em resposta ao sinal recebido do dispositivo de sinalização de via (190), e um controlador (110) incluindo um comparador de sinal para determinar se a entrada de sinal pelo maquinista coincide com o sinal recebido do dispositivo de sinalização de via, e tomar uma ação corretiva se o maquinista falha ao inserir o sinal apropriado. em algumas modalidades, a ação corretiva compreende a ativação de um dispositivo de aviso e/ou ativação dos freios do trem. em algumas modalidades, a invenção adicionalmente compreende um visor para exibir o sinal recebido do gerador de sinal de via ao maquinista.
Patent BR-PI9912440-B1 (BR)
Title: compostos herbicidas de ácido fenoxipropiônico n-alquil-n-2-fluorfenil amida
Inventor: KIM DAE WHANG
IPC: C07C309/73
Filed: 1999-07-24
Abstract: <b>compostos herbicidas de ácido fenoxipropiônico n-alquil-n-2-fluorfenil amida<d> a presente invenção se refere a novos compostos de ácido fenoxipropiônico n-alquil-n-2-fluorfenil amidas representados na fórmula (1), a um método para preparar os mesmos, ao uso dos mesmos para controlar capim-pé-de-galinha produzido pelo arroz e a composições adequadas como herbicidas. na referida fórmula, r é um grupo metil ou etil; x é hidrogênio, halogênio, ciano, alquila c~ 1~-c~ 6~, alcóxi c~ 1~-c~ 6~, haloalquila c~ 1~-c~ 3~ substituída com 1 a 3 átomos de halogênio, haloalcóxi c~ 1~-c~ 3~ substituído com 1 a 3 átomos de halogênio, alcoxialcoxi c~ 2~-c~ 4~, fenoxi, benziloxi, alquenil c~ 2~-c~ 6~, alquinil c~ 2~-c~ 6~, alqueniloxi c~ 2~-c~ 6~, alquiniloxi c~ 2~-c~ 6~ ou grupo fenil; y é hidrogênio ou fluor; n é um inteiro 1 ou 2 e quando n é 2, x pode estar em uma combinação de outros substituintes.
Patent CH-708638-B1 (CH)
Title: Verfahren zur Reparatur eines Bauteils einer Turbine und Turbinenbauteil.
Inventor: RUPAK DAS
IPC: C23C24/08
Filed: 2013-06-28
Abstract: Ein Turbinen-Reparaturverfahren schliesst das Bereitstellen eines beschädigten Turbinenbauteils (101A, B, C), wobei das Turbinenbauteil einen Hohlraum aufweist, der von einer oder mehreren Schächten umgeben ist, wobei in deren Hohlraum während des Betriebes ein höherer Druck als in der Region ausserhalb des einen oder mehrerer Schächte ist, wobei aufgrund der Beschädigung sich eine Öffnung zwischen der Region höheren Druckes und der Region geringeren Druckes gebildet hat, das Einführen von Teilchen in die Region höheren Druckes und das mindestens teilweise Reparieren der Öffnung zwischen der Region höheren Druckes und der Region geringeren Druckes mit mindestens einem der Teilchen ein, um ein repariertes Turbinenbauteil (101A, B, C) zu bilden. Das reparierte Turbinenbauteil (101A, B, C) hat eine Keramikmatrix-Verbundmaterialschicht und im Bereich einer Öffnung zwischen einem Hohlraum mit während des Betriebs der Turbine höherem Druck und einer Region mit während des Betriebs der Turbine geringerem Druck ausserhalb des Turbinenbauteils (101A–C) ist Siliciummaterial abgeschieden und von dem Keramikmatrix-Verbundmaterial umgeben.
Patent CH-705288-B1 (CH)
Title: Verfahren zur Teilung von Tropfen an einer mikrofluidischen Kreuzung.
Inventor: JAKIELA SLAWOMIR
IPC: B01L3/00
Filed: 2012-06-15
Abstract: Gegenstand der Erfindung ist ein Verfahren zur Teilung von Tropfen an einer mikrofluidischen Kreuzung, umfassend einen ersten Zufuhrkanal, einen zweiten Zufuhrkanal und einen Abfuhrkanal, gekennzeichnet dadurch, dass es die folgenden Etappen umfasst: a) Zuführung des Tropfens (1) an die mikrofluidische Kreuzung (3) durch den ersten Zufuhrkanal (2) mithilfe einer Strömung einer kontinuierlichen Flüssigkeit durch den ersten Zufuhrkanal (2) und den Abfuhrkanal, b) Einstellung der Strömung in dem ersten Zufuhrkanal (2) zu dem Zeitpunkt, wenn sich der Tropfen (1) im Lumen des zweiten Zufuhrkanals befindet, c) Öffnung der Strömung der kontinuierlichen Flüssigkeit in dem zweiten Zufuhrkanal bis zum Zeitpunkt, wenn der Tropfen (1) in zwei Teile zerteilt ist.
Patent CH-712770-B1 (CH)
Title: Radialturbinenrotor und Verfahren zum Herstellen desselben.
Inventor: CLAUDIUS WURM
IPC: F02C6/12
Filed: 2017-07-05
Abstract: Radialturbinenrotor (10), mit einem Rotorgrundkörper (11); und mit integral am Rotorgrundkörper (11) ausgebildeten Laufschaufeln (12); wobei der Rotorgrundkörper (11) eine Hohlraumstruktur (13) aufweist.
Patent CH-711242-B1 (CH)
Title: Casco di protezione dotato di visiera anti-abbagliamento.
Inventor: GIOVANNI DI TROIA
IPC: A42B3/22
Filed: 2015-06-24
Abstract: Casco di protezione (1) del tipo comprendente almeno una calotta interna in materiale di assorbimento degli urti ricoperta esternamente da una calotta esterna (2) e delimitante una apertura frontale del casco (1), nonché almeno una visiera antiabbagliamento (6) vincolata a detto casco di protezione in modo girevole e/o traslabile rispetto a detta calotta esterna (2) e mobile tra una posizione abbassata, di interferenza, almeno parziale, con tale apertura frontale, ed una posizione sollevata, di disimpegno dalla suddetta apertura frontale e viceversa. Vantaggiosamente, il casco di protezione comprende altresì mezzi motori (11) ad azionamento elettrico per azionare la suddetta visiera antiabbagliamento (6) dalla sua posizione abbassata alla sua posizione sollevata, o viceversa, ed una unità di controllo automatico (18, 19) ad azionamento vocale per controllare i succitati mezzi motori (11).