baber/WOPTO huggingface dataset:
Patent FR-2559514-A1 (FR)
Title: Dispositif pour une presse-secherie de machines a papier
Inventor: SCHWEINZER FRIEDRICH
IPC: D21F5/04
Filed: 1985-02-07
Abstract: LA PRESENTE INVENTION CONCERNE UN DISPOSITIF POUR UNE PRESSE-SECHERIE DE MACHINES A PAPIER, COMPRENANT UN CYLINDRE SECHEUR 2 ALIMENTE PAR DE LA VAPEUR VIVE PRODUITE DANS LA CHAUFFERIE, ET UNE HOTTE A HAUTE TEMPERATURE 1 SURMONTANT CE DERNIER ET ALIMENTEE EN AIR DE SOUFFLAGE. EN VUE D'UNE MEILLEURE UTILISATION DE L'ENERGIE CONTENUE DANS L'AIR SORTANT, UN SEPARATEUR DE VAPEUR 19 POUR SEPARER LA VAPEUR RESIDUELLE EST MONTE EN AVAL DU CYLINDRE SECHEUR 2, LE SEPARATEUR 19 ETANT, D'UNE PART, RELIE A UNE CONDUITE DE VAPEUR SEPAREE 20 ET, PAR L'INTERMEDIAIRE D'UN COMPRESSEUR 21, A UNE CONDUITE D'ALIMENTATION 5 DU CYLINDRE SECHEUR 2, ET LA CONDUITE DE CONDENSATS 24 DUDIT SEPARATEUR DE VAPEUR ETANT, D'AUTRE PART, RELIEE A LA CONDUITE DE VAPEUR SEPAREE 20 PAR L'INTERMEDIAIRE D'UN ECHANGEUR DE CHALEUR 14. UNE CONDUITE D'AIR SORTANT 10 S'ETEND DE LA HOTTE 1 A L'ECHANGEUR DE CHALEUR 14 ET A UN SECOND ECHANGEUR DE CHALEUR 15, AUQUEL EST RACCORDEE UNE CONDUITE POUR L'ALIMENTATION DE LA HOTTE EN AIR FRAIS RECHAUFFE.
Patent FR-2577591-A1 (FR)
Title: Isothermal construction made of timber and synthetic materials.
IPC: E04B1/10
Filed: 1985-02-15
Abstract: The invention relates to prefabricated timber constructions of the type used for dwelling places, garages, workshops, offices, etc., made entirely of panels with interlocking parts 7, 10 and joined by adhesive 9 and screws 8, which panels are made of rigid polyurethane foam 30 framed with timber 6 and covered with glass fibre and with polyester resin 5. The assembly which is very solid and sealed provides optimum thermal and acoustic insulation. Among the most important applications, may be mentioned : cost-effective constructions and installations in areas showing natural seismic activity, namely earthquakes or landslides, etc.
Patent FR-2579077-A1 (FR)
Title: Method for preparing a heat-sterilised fish preserve, with a low calorie content, having the appearance of a product with oil
Inventor: SIMON FRANK JOSEPH
IPC: A23L29/269
Filed: 1985-03-19
Abstract: The invention relates to a method for preparing a heat-sterilised fish preserve, with a low calorie content, having the appearance of a product with oil. An aqueous dispersion of a hydrophilic colloid produced by Xanthamonas (xanthan gum) is formed and this dispersion is added to the fish in a sufficient quantity to give the latter the appearance of a product with oil, and then the food product containing this dispersion is heated for heat-sterilisation. The product obtained has a low calorie content comparable to that of a fish with water, but it has the interesting appearance of a fish packaged in an edible oil in a preserve tin (fish with oil). Application to the preparation of tuna preserves for diets.
Patent FR-2581477-A1 (FR)
Inventor: BELBEL ELIE
IPC: H01H71/68
Filed: 1985-05-06
Abstract: A contactor apparatus is provided protected against short circuit currents, comprising for each phase between input and output terminals a contactor switch and a protective switch with automatic opening, a transfer electrode being placed close to the contacts of this second switch for shunting into a parallel circuit a considerable fraction of the fault currents.
Patent FR-2584863-A1 (FR)
Title: Electronic component hardened against radiation
Inventor: VAL CHRISTIAN
IPC: H01L23/552
Filed: 1985-07-12
Abstract: The subject of the invention is an electronic component 1 hardened against radiation, in particular ionising radiation, by coating it with a composite material forming a protective component 2, capable of strongly attenuating the radiation received by the electronic component. This composite material contains at least two distinct materials, one of them characterised by a high atomic charge number Z and the other by a low atomic charge number; the materials are arranged in the protective component 2 in such a way that the part of the component situated near the electronic component 1 has a low Z number.
Patent FR-2573486-A1 (FR)
Title: Dispositif de formation du melange pour des moteurs a combustion interne a plusieurs cylindres
Inventor: SCHMIDT KARL
IPC: F02M69/04
Filed: 1985-09-04
Abstract: DISPOSITIF DE FORMATION DU MELANGE POUR DES MOTEURS A COMBUSTION INTERNE 1 A PLUSIEURS CYLINDRES, COMPORTANT UN PREMIER CONDUIT D'ASPIRATION D'AIR 3 ET UN SECOND CONDUIT D'ASPIRATION D'AIR 5 COMPORTANT UN PAPILLON DES GAZ 6 ACTIONNABLE INTENTIONNELLEMENT, AUQUEL EST COUPLE EN REGISTRE LE PAPILLON DES GAZ 2 DU PREMIER CONDUIT D'ASPIRATION D'AIR, SECOND CONDUIT D'ASPIRATION D'AIR D'OU PARTENT DES CONDUITS D'ASPIRATION DU MELANGE 7 ALLANT AUX CONDUITS D'ASPIRATION INDIVIDUELS 4 DU PREMIER CONDUIT D'AIR, LES CONDUITS D'ASPIRATION DU MELANGE 7 COMPORTANT UNE PORTION DE VENTURI 9 DANS LAQUELLE DEBOUCHENT LES CONDUITS D'INJECTION 10 D'UNE SOUPAPE DE DOSAGE DU CARBURANT 11. CES DISPOSITIONS ONT POUR BUT D'OBTENIR UNE BONNE DISTRIBUTION ET UNE BONNE PREPARATION DU MELANGE.
Patent FR-2590286-A1 (FR)
Title: Method and installation for treating textile materials on material-holders with a fluid
Inventor: VILLARD FRANCOIS
IPC: D06B23/04
Filed: 1985-11-18
Abstract: Method and installation for treating, in a suitable apparatus, spools of textile materials introduced and/or removed from the said apparatus by way of a material-carrier on which the said spools are able to be stacked one above the other, the said treatment, for example washing, bleaching, dyeing or the like, being performed with the aid of a bath circulating through the said material. Loading of the spools 2 onto the material-holder 1, and/or unloading them therefrom, takes place by simultaneously positioning and/or extracing a plurality of stacks of spools grouped into stacks at the outlet of the spinning and spooling means, the said stacks of spools being uniformly distributed on a handling module. Application: bleaching, dyeing, washing or the like of textile materials, in the form of rovings, threads etc., in spool form.
Patent FR-2574572-A1 (FR)
Title: Temperature regulator for heating installation
Inventor: STRAUB THOMAS
IPC: G05D23/24
Filed: 1985-12-04
Abstract: Temperature regulator with inputs for an ambient temperature probe, an external probe and an outward flow temperature probe. An impedance measuring circuit 12 controls a regulation mode switch 10 on the basis of the impedance of one of the inputs 1; 2; 3 at least. When the three probes 5; 6; 7 are connected, the temperature regulator operates as an outward flow temperature regulator, driven by the external conditions with an influence by the ambient temperature. In the absence of one of the probes 5; 6; 7, the temperature regulator automatically chooses the appropriate regulation mode.
Patent FR-2596767-A1 (FR)
Title: Production and packaging of a partially fermented Alexandria muscat grape must
Inventor: MOLI JUSTIN
IPC: C12G1/02
Filed: 1986-04-04
Abstract: This drink is produced and packaged according to a process consisting of the following stages:     - draining of destemmed Alexandria muscat grapes   - clarification at low temperature, 10 DEG , - addition of yeast K1 labelled I.C.V. with the obligation for the I.C.V. microbiology laboratory to monitor the fermentation of the medium by the said yeast and to issue a certificate certifying the presence of this yeast,   - thermoregulated fermentation between 15 and 20 DEG , - stopping the fermentation at the desired alcohol/sugar balance by a physical process: centrifugation - pasteurisation - cold,   - clarification by precipitation and filtration, - stabilisation with respect to crystalline precipitations: physical process using cold,   - packaging after pasteurisation and fine filtration. c
Patent FR-2597533-A1 (FR)
Title: Slab particularly for covering the ground
IPC: E04F15/10
Filed: 1986-04-16
Abstract: The subject of the invention relates to the technical field of construction elements and materials. According to the invention, the underside 1a of the slab is equipped, directly or in an added-on manner, with anchoring pins 2 shaped to ensure the positioning and fixing of the slab on the ground.
Patent FR-2598236-A1 (FR)
Title: Animal counter
IPC: A01K1/00
Filed: 1986-05-05
Abstract: The invention relates to an animal counter, making it possible to assemble and separate batches of a fixed number n of animals. It comprises a corridor and a gate with opening and closing controlled by a jack 3. The corridor is equipped with a detector for the passage of an animal which, each time an animal passes, actuates, via a microvalve 6 and a distributor 9, a counting device consisting of a jack 10, of a rod and of a toothed wheel comprising n teeth and a cam which actuates, on each complete revolution of the toothed wheel, a microvalve 18 which drives the distributor 2 so as to close the door via the jack 3. A manual control consisting of a microvalve 1 is provided to open the door by means of the jack 3. The most useful application is counting n animals into an n-place milking parlour.
Patent FR-2582216-A1 (FR)
Title: Prothese auditive a conduction osseuse directe
Inventor: HOUGH JACK VAN DOREN
IPC: H04R25/00
Filed: 1986-05-22
Abstract: LE PROBLEME POSE CONSISTE, ENTRE AUTRES, A REDUIRE AU MINIMUM LES ELEMENTS EXTERNES VISIBLES. SUIVANT L'INVENTION, LA PROTHESE COMPREND UN DISPOSITIF DE TRAITEMENT DES SONS 11 FOURNISSANT UN SIGNAL ELECTROMAGNETIQUE ET COMPORTANT UN EMETTEUR 13 PRESENTANT UN PREMIER MOYEN MAGNETIQUE ET PLACE EN POSITION SURCUTANEE SUR LE CRANE B, ET D'AUTRE PART UN DISPOSITIF GENERATEUR DE VIBRATIONS 12 IMPLANTE EN POSITION SOUS-CUTANEE ET COMPRENANT UN MOYEN 80 DE FIXATION SUR L'OS B, AINSI QU'UN SECOND MOYEN MAGNETIQUE COOPERANT AVEC LE PREMIER POUR LE MAINTIEN DE L'EMETTEUR, RECEVANT LE SIGNAL ELECTROMAGNETIQUE ET FAISANT VIBRER L'OS B SOUS L'EFFET DE CE SIGNAL, CE QUI STIMULE L'OREILLE INTERNE EN CREANT LA PERCEPTION D'UN SON. L'INVENTION TROUVE UNE APPLICATION AVANTAGEUSE SUR LES PERSONNES HANDICAPEES AUDITIVES.
Patent FR-2593393-A1 (FR)
Title: Solution aqueuse a usage parenteral d'activateur tissulaire du plasminogene, procede pour la preparer et recipient obture la contenant
Inventor: JOHNSTON MICHAEL DENIS
IPC: A61K38/00
Filed: 1986-05-27
Abstract: L'invention concerne une solution aqueuse à usage parentéral d'activateur tissulaire du plasminogène. La solution a un pH de 2 à 5, ce qui lui permet d'avoir une forte concentration en principe actif et d'être éventuellement diluée au moment de l'emploi, sans risque de précipitation. Domaine d'application : thérapie antithrombotique.
Patent FR-2606176-A1 (FR)
Title: Method of regulating the temperature of a central heating installation
Inventor: JOURNEAU ANNE
IPC: A01B69/04
Filed: 1986-11-05
Abstract: The invention relates to a method of regulating the temperature of a central heating installation. The installation comprises in particular a boiler 1, ducts 2 for the distribution, in a closed circuit, of a heat-carrying fluid to different heating points 3 such as radiators, convectors or heated floors and a circulation pump 4 for the said heat-carrying fluids. According to the method of the invention, the temperature of the fluid is measured on leaving the boiler 1, the temperature of the fluid is measured on return to the boiler 1 and the offset between the two previously sampled temperatures is measured. The sampled temperature offset is compared with respect to an ideal offset which is a function of the temperature of the fluid on leaving the boiler, which makes it possible to determine a differential offset. The heating regime of the boiler, that is to say the outflow temperature of the heat-carrying fluid, is adjusted in order to reduce the differential offset. The invention will apply particularly to heating engineers.
Patent FR-2606560-A1 (FR)
IPC: H02G7/05
Filed: 1986-11-06
Abstract: A clamp comprises a split sleeve provided with a mooring element and a conical recess with a slight slope in which a compressible core is mounted to a slide exhibiting a cavity for housing of the electric conductor or its carrying cable. The slide has an outside shape complementary to that of the recess of sleeve and which can be wedged by sliding in the latter. At least one longitudinal portion of the wall of cavity the central core, provided for housing the carrying cable of conductor and, preferably, each of the two diametrically opposite longitudinal portions of this cavity, consists of a metal bar inserted in this wall and whose free face is provided with teeth.
Patent FR-2595608-A1 (FR)
Title: Annular jack system for devices for clamping bolts
Inventor: SCHEMBERGER HERMANN
IPC: B25B29/02
Filed: 1986-12-29
Abstract: Annular jack system for devices for clamping bolts intended for opening and closing pressure vessels, which is arranged between a clamping ring and a pressure transmission disc and is composed of at least one annular cylinder pressing on the clamping ring and at least one annular piston mounted movably in the corresponding annular cylinder, which piston is pressed from the bottom against the pressure transmission disc. A circular coaxial recess 22 with a female thread is provided in the upper region 12 of the annular piston 10, an adjusting ring 23 with a male thread can be screwed and unscrewed in the said recess 22 and the pressure transmission disc 13 has external teething 24 for a driving gear 26 and is connected in a rotationally secure manner to the adjusting ring 23.
Patent FR-2610787-A1 (FR)
Title: Growing pot
Inventor: SHIMOJIMA TOSHIO
IPC: A01G9/02
Filed: 1987-02-13
Abstract: Growing pot for germination and growing of young fruit tree plants, facilitating killing of old roots, supply of fertiliser, replacement of compost, and transplating of young plants, by virtue of the opening or complete or partial removal of a plurality of partial side walls (2a, 2b, 2c, 2d) which are provided for this purpose.
Patent FR-2614493-A1 (FR)
Title: Sealed case for a portable video camera
IPC: H04N5/225
Filed: 1987-04-23
Abstract: In this sealed case for a portable video camera, one of the two elements of the case 1, namely the body 2 and the cover 3, includes, in its upper part, a compartment 17 provided with a wide opening 18 oriented towards the rear of the case; the case furthermore comprises a video monitor 21, which has a display screen 21a larger than that of the original video monitor of the video camera 5 and which is installed in the said compartment 17 behind the wide opening 18, as well as electrical connection means 46 for connecting the video monitor 21 of the case 1 to the video camera 5, in place of its original video monitor, when the said camera is installed in the case.
Patent FR-2616370-A1 (FR)
Title: System for sharpening the bevelled cutting head, of circular cross-section, of an instrument such as a circular bistoury
IPC: B24B49/12
Filed: 1987-06-15
Abstract: The invention relates to a system for sharpening for example a circular bistoury. The system comprises a motor 7 for rotationally driving the instrument during sharpening, a sharpening member 9 with abrasive effect and optical means 29 with magnifying effect for monitoring the sharpening operation. It is characterised in that the motor 7 and a support device 8 for the sharpening means 9 are mounted on a base plate 5 and can move with respect to each other in the direction of the axis of the instrument in order to adjust the pressure of the cutting head 2 on the sharpening member 9 during this operation, the motor 7 is of the low-speed continuous rotation type and the support device 8 includes means 24 for holding the sharpening member in its inclined position corresponding to the angle of the bevel 2 during the sharpening operation. The invention can be used for bistouries for hair grafts.
Patent FR-2619735-A1 (FR)
Title: Dispositif de compensation du courant reactif en fonction de la charge pour transformateur en particulier pour un transformateur de soudage
Inventor: MECKE HUBERT
IPC: H01F27/42
Filed: 1987-09-01
Abstract: L'invention se rapporte à un dispositif de compensation de l'intensité réactive en fonction de la charge, pour transformateurs dont la tension de travail secondaire est beaucoup plus petite que la tension à vide. Selon l'invention, une capacité de compensation 2 est branchée en série avec l'enroulement secondaire 8 du transformateur et avec la charge 4, dont la réactance capacitive est à peu près égale en valeur absolue à la réactance de substitution inductive qui agit aux points de connexion de la capacité de compensation.
Patent FR-2605528-A1 (FR)
Title: Separateur filtrant pour des particules et gaz nocifs contenus dans des gaz bruts
IPC: B01D46/24
Filed: 1987-10-20
Abstract: SEPARATEUR FILTRANT DONT LE CARTER EST SUBDIVISE PAR UNE CLOISON PERFOREE EN UN COMPARTIMENT DE FILTRATION RECEVANT LES ELEMENTS FILTRANTS CHARGES DE GAZ BRUT ET DEVANT ETRE NETTOYES PAR RINCAGE A CONTRE-COURANT ETOU PAR SECOUSSES, AVEC UN BAC COLLECTEUR DE POUSSIERE INFERIEUR EQUIPE D'UN EXTRACTEUR DE POUSSIERE, ET EN UN COMPARTIMENT DE GAZ EPURE, LA POUSSIERE PRODUITE ETANT EN PARTIE RENVOYEE AUX ELEMENTS FILTRANTS AVEC LE GAZ BRUT. LE BAC COLLECTEUR DE POUSSIERE 6 PRESENTE, DANS LA REGION DE SON EXTRACTEUR DE POUSSIERE, AU MOINS UNE OUVERTURE 9 VERS UN COMPARTIMENT D'ECOULEMENT DU GAZ BRUT 11 SITUE A UN NIVEAU INFERIEUR ET COMMUNIQUANT, AU-DESSUS OU LATERALEMENT, AVEC LE COMPARTIMENT DE FILTRATION 4, QUI COMPORTE DANS SA PARTIE INFERIEURE UN DISPOSITIF D'AMEUBLISSEMENT 14 POUR LA POUSSIERE TOMBANT VERS LE BAS PAR LEQUEL LE GAZ BRUT AMENE PASSE DANS LE COMPARTIMENT D'ECOULEMENT DU GAZ BRUT.
Patent FR-2626074-A1 (FR)
Title: Procede d'optimisation du contraste dans une image d'un echantillon
Inventor: DARBOUX MICHEL
IPC: G01N21/956
Filed: 1988-01-18
Abstract: L'invention concerne un procédé d'optimisation du contraste dans une image d'un échantillon. Cet échantillon 5 comporte un nombre entier de zones ayant des coefficients de réflectance ou de transmittance différents. Ces zones sont éclairées par une source 7 de lumière, et l'image est obtenue à la sortie d'un système optique 4 pour être analysée par un capteur 10 fournissant sur des sorties, des signaux d'enregistrement de cette image. L'optimisation du contraste consiste à déterminer les caractéristiques d'un filtre optimal à interposer entre la source 7 et l'échantillon 5 à contrôler. Application notamment au contrôle de circuits intégrés en cours de fabrication.
Patent FR-2617418-A1 (FR)
Title: Procede de production d'articles plats a partir d'une poudre metallique, et produit obtenu par la mise en oeuvre de ce procede
Inventor: MARLOWE DAVID T
IPC: B22F1/00
Filed: 1988-03-04
Abstract: L'invention concerne une poudre métallique mixte comprenant, en poids, un constituant dominant ayant un point de fusion élevé et un constituant secondaire ayant un point de fusion notablement inférieur. Ladite poudre est mise par compactage sous forme d'un article plat, plusieurs de ces articles pouvant être empilés; donnant lors du frittage ultérieur, un article d'épaisseur désirée à section transversale monolithique ou composite. Application : production de plaques d'alliages lourds.
Patent FR-2628676-A1 (FR)
Title: Chilled twin screw extruded for continuously coating cables - enables high throughputs without premature crosslinking or thermal damage to non halogenated coatings
Inventor: OVTCHARENKO JEAN
IPC: B29C48/06
Filed: 1988-03-16
Abstract: Extrusion coating of an electric cable (85) is effected using a twin-screw extruder (10) provided with external cooling jackets throughout the length of the barrel (24) except where openings are provided for a hopper neck (58) at one end of the barrel and vacuum assisted vent or degassing parts (64) at an intermediate point along the line of each extruder. The melt flow passage (86) between the screw tips (28) and the crosshead coating passage (94) is kept relatively short. USE/ADVANTAGE - Esp. for coating cables with non-halogenated thermplastic materials, such as ethylene-vinyl acylonitrile blends containing fire retardant additives such as alumina trihydrate. Allows melt temp. to be kept below about 160 deg.C to 165 deg.C, to avoid premature crosslinking or degradation. Offers higher outputs than a conventional single screw extrusion unit, e.g. about 250 kg/h instead of 30 to 50 kg/h for an extruder with a barrel bore dia. of 90 mm.
Patent FR-2630471-A1 (FR)
Title: Joint destine a l'etancheite laterale d'un clapet de barrage
Inventor: CARDIS MICHEL
IPC: E02B7/54
Filed: 1988-04-25
Abstract: La nervure arrondie 110 du joint latéral dépasse transversalement au-delà du plan du bajoyer 7, 7a de manière que sa périphérie 112, qui affecte une forme circulaire, vienne en appui contre la face latérale d'un chambrage cylindrique 7b ménagé dans ledit bajoyer 7. Ainsi les déplacements du clapet n'affectent pas l'étanchéité.
Patent FR-2631966-A1 (FR)
IPC: C08F2/00
Filed: 1988-05-24
Abstract: Polythioureas of general formula (A):  (NH-R-NH-CS)n in which R denotes an aromatic group substituted by at least one sulphonic group and n an integer between 3 and 300.
Patent FR-2624482-A1 (FR)
Title: Bouchon de protection d'un distributeur d'aerosol contre les manipulations par des enfants
Inventor: DESJARDINS SERGE
IPC: B65D83/14
Filed: 1988-06-09
Abstract: L'invention concerne un bouchon pour récipient d'aérosol. Elle se rapporte à un bouchon comportant un élément annulaire 16 ayant, à l'intérieur, un cordon circulaire 20 destiné à retenir l'élément annulaire sur un récipient 12 par logement dans une gorge 22 du récipient. Un capuchon 18 a des pattes 36 qui pénètrent dans des ouvertures 34 formées dans l'organe annulaire 16 et qui peuvent s'enfoncer dans des entailles 32, jusqu'à des butées 38. De cette manière, une rotation du capuchon fait aussi tourner l'élément annulaire 16 si bien qu'il faut deux mains pour ouvrir le capuchon. Application aux capuchons de protection contre les manipulations intempestives par les enfants.
Patent FR-2637124-A1 (FR)
Title: Systeme de suspension d'une anode tournante de tube a rayons x comportant des paliers magnetiques passifs
Inventor: DOUKHAN MARC
IPC: F16C39/06
Filed: 1988-09-23
Abstract: L'invention concerne les tubes à rayons X du type à anode tournante. L'invention réside dans le fait que le rotor 3 est supporté par des paliers magnétiques passifs 5, 6, 9, 10 dont les positions respectives sont telles que le rotor est décalé dans le sens opposé à celui de l'anode 22. Le rotor est maintenu décalé par une butée 11 qui sert en même temps de conducteur électrique pour le courant anodique.
Patent FR-2638955-A1 (FR)
Title: Mobile display unit, especially for bottles
Inventor: MORANE BRUNO
IPC: A47F7/28
Filed: 1988-11-15
Abstract: Display unit, especially for bottles, comprising compartments 2 having a bottom and an opposing supporting opening, the compartments being intended to hold an object for display, said bottoms of said compartments 2 being juxtaposed in a closed loop on a mobile support 3 that can be driven to cause said compartments 2 to move around said loop, and being generally perpendicular to the middle plane of said loop.
Patent FR-2638597-A1 (FR)
Title: Device for mounting a mowing head on a vehicle
Inventor: HAMON GUY
IPC: A01D34/86
Filed: 1988-11-07
Abstract: Device for mounting a mowing head 9 on a vehicle. The device comprises a telescopic beam 3 capable of being deployed transversely on one of the sides of the vehicle, and the free end of which supports the mowing head 9; in accordance with the invention, this head is suspended from the free end 32 of the telescopic beam by means of a vertical spindle 70 which constitutes, viewed from above, one of the four apexes of an articulated parallelogram P which is materialised by a pivoting girder 4, of a normally fixed connecting rod 5 secured to the part 32, of a rod 8 and of a connecting rod 7 secured to the spindle 70, this arrangement being such that the head 9 remains constantly parallel to itself when it is moved following the pivoting F of the girder 4. Equipment for the upkeep of roadways.