Abrégé

A hydraulic pressure supply unit has a storage chamber which stores hydraulic fluid, a hydraulic pump which is arranged within the storage chamber and dips at least partially into the stored hydraulic fluid, and an electric motor which drives the hydraulic pump. The electric motor is arranged below the hydraulic pump in a separate motor chamber which is situated below the storage chamber, is dry, and is not connected fluidically to the storage chamber. The electric motor is coupled in a thermally transmitting manner to a separating floor, the upper side of which delimits the storage chamber and is wetted continuously with stored hydraulic fluid.

Classes IPC  ?

• F04B 23/02 - Installations ou systèmes de pompage comportant des réservoirs
• F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques
• F04B 53/08 - RefroidissementChauffagePrévention du gel

Abrégé

In a mobile stretcher, in order to change the height position of a patient support mounted on a chassis, the chassis geometry is modifiable by a hydraulic drive system. The drive system includes a linear actuator, a pressure supply unit, and a receiving space for hydraulic fluid. A manually actuatable unlocking valve unit directly connects a lifting working chamber of the linear actuator to the receiving space. The valve unit has a control space delimited by a piston element movably guided relative to the housing of the valve unit and which communicates with a lifting attachment, which communicates with the working chamber. The piston element is operatively connected to a valve body interacting with a valve seat of a relief valve between the lifting attachment and a tank attachment communicating with the receiving space. A mechanical actuation input acts on the valve body, with a spring element interposed.

Classes IPC  ?

• A61G 1/013 - Brancards pliables ou escamotables
• A61G 1/02 - Brancards à roues

Abrégé

A hydraulic system has two hydraulic circuits, each with a pressure generating unit acting on an actuator unit. The generating units are slot-controlled radial piston pumps and form a pump assembly with a single common pump support and single common rotor. The rotor is rotatable on a free protruding section of a common support hub and has piston-receiving bores on axially offset planes. The hub has two first and two second fluid bores. The first bores communicate with first pump connections and first control openings on the hub on a first plane, and the second fluid bores communicate with second pump connections and second control openings on the hub on a second plane. A first and a second adjustment frame, each having an eccentric ring and acting on the pump pistons, are disposed on respective planes perpendicular to the main axis and independently guided in a linearly movable manner.

Classes IPC  ?

• F04B 1/053 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail avec des éléments actionnants ou actionnés aux extrémités intérieures des cylindres
• F04B 1/047 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail avec des éléments actionnants ou actionnés aux extrémités extérieures des cylindres
• F04B 1/07 - Commande en modifiant l'excentricité relative entre deux organes, p. ex. une came et un arbre d'entraînement
• F04B 11/00 - Égalisation des pulsations, p. ex. au moyen de réservoirs d'airAnticavitation
• F04B 23/06 - Combinaisons de plusieurs pompes les pompes étant toutes du type à déplacement positif alternatif
• F04B 53/16 - Carcasses d'enveloppeCylindresChemises de cylindre ou culassesConnexions des tubulures pour fluide
• F15B 7/00 - Systèmes de manœuvre utilisant la pression d'un fluide dans lesquels le mouvement produit est lié de façon définie au débit d'une pompe volumétriqueTélémoteurs
• F04B 1/0476 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail avec des éléments actionnants ou actionnés aux extrémités extérieures des cylindres avec plusieurs ensembles piston-cylindre radiaux montés en série situés côte à côte

Abrégé

A passenger restraint device of a fairground ride passenger unit, having a passenger space, includes a position-adjustable restraint element and a lockable hydraulic adjuster which acts on the restraint element. The lockable hydraulic adjuster has a cylinder-piston unit and a hydraulic accumulator. The hydraulic accumulator and the cylinder-piston unit of the hydraulic adjuster form a structural unit with a cylinder of the cylinder-piston unit and a cylinder of the hydraulic accumulator arranged next to and parallel to each other as part of the integrated cylinder assembly. A common closure cover is provided on each end face of the integrated cylinder assembly. Please replace the specification with the attached substitute specification. A marked-up and clean version of the amended specification is submitted herewith.

Classes IPC  ?

• A63G 7/00 - Montagnes russes
• B60R 21/00 - Dispositions ou équipements sur les véhicules pour protéger les occupants ou les piétons ou pour leur éviter des blessures en cas d'accidents ou d'autres incidents dus à la circulation

Abrégé

A hydromechanical linear converter has a cylinder, a piston unit and a seat valve unit. The cylinder and a piston of the piston unit delimit a hydraulic working chamber, into which a working connection and a further fluid connection open, and has a supply connection 10. The valve unit switches between a first position connecting the supply connection to the fluid connection and a second position blocking the fluid connection from the supply connection. The linear converter includes a valve housing with a valve seat 16, a valve body with a valve head cooperating with the seat, a spring unit preloading the valve body into a position corresponding to the first position and an electromagnetic actuator 14 acting on the valve body 12 by purely mechanical action, to move the valve body against the force of the spring unit into a position corresponding to the second switching position.

Classes IPC  ?

• F15B 13/04 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique

Abrégé

A hydraulic pressure supply unit has a storage chamber which stores hydraulic fluid, a hydraulic pump which is arranged within the storage chamber and dips at least partially into the stored hydraulic fluid, and an electric motor which drives the hydraulic pump. The electric motor is arranged below the hydraulic pump in a separate motor chamber which is situated below the storage chamber, is dry, and is not connected fluidically to the storage chamber. The electric motor is coupled in a thermally transmitting manner to a separating floor, the upper side of which delimits the storage chamber and is wetted continuously with stored hydraulic fluid.

Classes IPC  ?

• F04B 23/02 - Installations ou systèmes de pompage comportant des réservoirs
• F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques
• F04B 53/08 - RefroidissementChauffagePrévention du gel

Abrégé

A hydraulic lifting column comprising a base structure, a head structure and a lifting structure. The lifting structure comprising a hydraulic power unit and hydraulic linear actuators extending between the base structure and the head structure, the hydraulic power unit acting on the hydraulic linear actuators. The lifting structure comprising four linear actuator units with a mutually parallel, vertically oriented working direction. Each linear actuator unit comprising a double cylinder having two-cylinder bores arranged next to one another and two piston structures with piston rods oriented parallel to one another and extendable in opposite directions from the double cylinder. The four lower piston rods are connected to the base structure at the corners of a first quadrilateral and the four upper piston rods are connected to the head structure at the corners of a second quadrilateral.

Classes IPC  ?

• F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
• B66F 7/20 - Châssis de levage, p. ex. pour lever des véhiculesAscenseurs à tablier à tabliers supportés directement par des crics par un ou plusieurs crics hydrauliques ou pneumatiques par plusieurs vérins avec moyens pour maintenir le tablier horizontal durant le mouvement
• F15B 15/02 - Schéma mécanique de montage caractérisé par les moyens transformant le mouvement de l'élément entraîné par le fluide en mouvement de l'organe terminal qui est actionné
• F15B 15/18 - Ensembles combinés comportant moteur et pompe
• A61G 13/06 - Tables d'opération réglablesLeurs commandes la surface totale de la table pouvant être élevée ou abaissée

Abrégé

A lifting device comprises a delivery direction-reversible hydraulic unit and at least three hydraulic lifting cylinders. The hydraulic cylinders are dimensioned in a stepped manner in such a way that the piston rod working space of an n-th lifting cylinder and the piston working space of an (n+1)-th lifting cylinder, with n from 1 to z−1, wherein z indicates the number of hydraulic lifting cylinders of the lifting device, have the same effective area. The at least three lifting cylinders are hydraulically connected in series in such a way that the respective working spaces with the same effective area are directly fluidically coupled by means of a hydraulic connection. The piston working space of the first lifting cylinder and the piston rod working space of the z-th lifting cylinder are in fluid connection with the connections of the delivery direction-reversible hydraulic unit.

Classes IPC  ?

• B66F 7/08 - Châssis de levage, p. ex. pour lever des véhiculesAscenseurs à tablier à tabliers supportés par des leviers pour un mouvement vertical actionnés hydrauliquement ou pneumatiquement
• B66F 9/06 - Dispositifs pour lever ou descendre des marchandises volumineuses ou lourdes aux fins de chargement ou de déchargement se déplaçant, avec leurs charges, sur des roues ou sur un dispositif analogue, p. ex. chariots élévateurs à fourche
• G05D 1/02 - Commande de la position ou du cap par référence à un système à deux dimensions
• B65G 1/06 - Dispositifs d'emmagasinage mécaniques avec des moyens pour que les objets se présentent à l'enlèvement dans des positions ou à des niveaux prédéterminés
• G05D 1/00 - Commande de la position, du cap, de l'altitude ou de l'attitude des véhicules terrestres, aquatiques, aériens ou spatiaux, p. ex. utilisant des pilotes automatiques
• B65G 1/04 - Dispositifs d'emmagasinage mécaniques

Abrégé

b).

Classes IPC  ?

• A61G 7/05 - Parties constitutives, détails ou accessoires de lits
• A61G 13/10 - Parties constitutives, détails ou accessoires
• B60B 33/00 - Roues à pivot en général
• B60T 1/14 - Aménagements des éléments de freinage, c.-à-d. des parties de ceux-ci dans lesquelles se produit l'effet de freinage par action autre qu'en retardant les roues, p. ex. réaction par action directe sur la route
• F16D 63/00 - Freins non prévus ailleursFreins combinant plusieurs des types mentionnés dans les groupes

Abrégé

The passenger-retaining device (2) of a fairground ride passenger unit, which furthermore has a passenger receptacle (1), comprises a positionally variable retaining element (6) and, acting thereon, a lockable hydraulic adjuster (10) having a cylinder-piston unit (11) and a hydraulic accumulator (12). Here, the hydraulic accumulator (12) and the cylinder-piston unit (11) of the hydraulic adjuster (10) form a structural unit in that the cylinder (19) of the cylinder-piston unit (11) and a cylinder (14), arranged next to and parallel to the latter, of the hydraulic accumulator (12) are part of an integrated cylinder assembly (21) which comprises, on both sides, a respective common closure cover.

Classes IPC  ?

• A63G 7/00 - Montagnes russes

Abrégé

In a mobile stretcher, in order to change the height position of a patient support mounted on a chassis, the geometry of the chassis is modifiable by means of a hydraulic drive system. The latter comprises a linear actuator, a pressure supply unit, and a receiving space for hydraulic fluid, and it moreover has a manually actuatable unlocking valve unit (14) for the direct connection of a stroke working space of the linear actuator to the receiving space for hydraulic fluid. The unlocking valve unit (14) has a control space (28), which is delimited by a piston element (30) guided movably relative to the housing (21) of the valve unit and which communicates with the stroke attachment (23) communicating with the stroke working space. The piston element (30) is operatively connected here to a valve body (27) which interacts with a valve seat (26) of a relief valve (16) configured between the stroke attachment (23) and a tank attachment (25) communicating with the receiving space (6). Moreover, a mechanical actuation input (35) of the valve unit (14) acts on the valve body (27), with interpositioning of a spring element (40).

Classes IPC  ?

• A61G 1/013 - Brancards pliables ou escamotables
• A61G 1/02 - Brancards à roues
• A61G 1/056 - Pieds articulés
• F15B 13/01 - Clapets de blocage ou autres dispositifs de détente
• A61G 7/012 - Lits spécialement conçus pour donner des soinsDispositifs pour soulever les malades ou les personnes handicapées comportant un cadre de sommier réglable pour élever ou abaisser tout le cadre du sommier

Abrégé

The invention relates to a hydraulic system comprising two hydraulic circuits, each of which comprises a pressure generating unit that acts on an actuator unit with a reversible pump direction. The first and the second pressure generating unit is designed as a slot-controlled radial piston pump (22, 23). The radial piston pumps form a pump assembly (24) with a single common pump support (25) and a single common rotor (33) which is mounted on a free protruding section (32) of a common pump support hub (27) fixed on one side in a rotatable manner about a main axis (X) and has pump piston bores (36) that are arranged on two axially offset planes and are used to receive oscillating pump pistons (35). The pump support hub (27) has two first fluid bores and two second fluid bores (56), wherein the two first fluid bores communicate with two first pump connections and two first control openings arranged on the pump support hub (27) on a first pump piston plane, and the two second fluid bores (56) communicate with two second pump connections and two second control openings (59) arranged on the pump support hub (27) on a second pump piston plane. A first adjustment frame (37) and a second adjustment frame (42), each of which comprises an eccentric ring (39) that is received in the frame and acts on the pump pistons (35), are received in the pump support (25) on a respective plane perpendicular to the main axis (X) so as to be guided in a linearly movabe manner independently of each other.

Classes IPC  ?

• F04B 1/053 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail avec des éléments actionnants ou actionnés aux extrémités intérieures des cylindres
• F04B 11/00 - Égalisation des pulsations, p. ex. au moyen de réservoirs d'airAnticavitation
• F04B 23/06 - Combinaisons de plusieurs pompes les pompes étant toutes du type à déplacement positif alternatif
• F04B 53/16 - Carcasses d'enveloppeCylindresChemises de cylindre ou culassesConnexions des tubulures pour fluide
• F04B 1/047 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail avec des éléments actionnants ou actionnés aux extrémités extérieures des cylindres
• F04B 1/07 - Commande en modifiant l'excentricité relative entre deux organes, p. ex. une came et un arbre d'entraînement

Abrégé

The invention relates to a human exoskeleton provided for coupling to a human body, comprising a first skeletal structure (1) with a first coupling unit (6) which is suitable for coupling to a first part (4) of the human body, a second skeletal structure (3) which is connected to the first skeletal structure in an articulated manner and which comprises a second coupling unit (9) that is suitable for coupling to a second part (7) of the human body, and an adjustment unit (10) which acts between the first skeletal structure (1) and the second skeletal structure (3) and which comprises at least one hydraulic actuator unit (11) and a hydraulic assembly (12) that acts on the actuator unit and has two pump connections (21a, 21b). The hydraulic assembly (12) is designed such that the delivery rate can be adjusted, and a first pump connection (21a) is fluidically connected to a working chamber (A) of the actuator unit (11) via a pressure line (18a) as well as to the second pump connection (21b) via a discharge line (23, 23a), through which a fluid flows when said working chamber (A) is pressurized and into which a flow throttle (24, 24a) is integrated, and via a settling tank (22) connected downstream of the discharge line.

Classes IPC  ?

• B25J 9/00 - Manipulateurs à commande programmée
• A61H 1/02 - Appareils d'exercice extenseurs ou de ployage
• B25J 9/14 - Manipulateurs à commande programmée caractérisés par des moyens pour régler la position des éléments manipulateurs à fluide

Abrégé

An electrohydraulic drive unit is provided, comprising a cylinder-piston assembly having a piston-side first hydraulic working chamber and a piston-rod-side second hydraulic working chamber, a tank, a hydraulic pump, which can be driven at variable rotational speed and which has a tank connection point and a working connection point, a valve assembly, which is connected between the working connection point of the hydraulic pump and the cylinder-piston assembly, and an anti-cavitation valve, which is connected between the tank and the first hydraulic working chamber; and a machine controller. Switching valves of the valve assembly can be switched between loading of the first hydraulic working chamber and loading of the second hydraulic working chamber of the cylinder-piston assembly during pumping operation of the hydraulic pump from the working connection point of the hydraulic pump by the machine controller.

Classes IPC  ?

• F15B 11/02 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie
• B30B 15/20 - Commande des presses actionnées pneumatiquement commandant le mouvement alternatif du pilon commandant la vitesse du pilon, p. ex. vitesse d'approche, de la course de pressage ou de la course de retour
• F15B 1/02 - Installations ou systèmes comprenant des accumulateurs
• F15B 1/027 - Installations ou systèmes comprenant des accumulateurs comportant des dispositifs de remplissage des accumulateurs

Abrégé

An electrohydraulic linear actuator comprises a housing consisting of a tubular profile, which forms a housing shell and in which there is a plurality of cavities, and which is closed at the ends by two housing covers fitted to the ends of the housing shell. A first cavity of the tubular profile forms a cylinder which forms the hydraulic cylinder of a double-acting synchronous cylinder and a second cavity which extends parallel to the first cavity accommodates a hydraulic unit in addition to the hydraulic cylinder, and a hydraulic oil reservoir is formed in said second cavity. Two working chambers of the hydraulic cylinder are separated from each other by a piston unit. The housing has at least one through-hole for a coupling element which forms a mechanical interface with the piston unit. The electric motor of the hydraulic unit is configured as a brushless outrunner motor.

Classes IPC  ?

• F15B 15/18 - Ensembles combinés comportant moteur et pompe
• F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
• F15B 11/10 - Systèmes de servomoteurs dépourvus d'asservissement avec un seul servomoteur dans lesquels la position du servomoteur est fonction de la pression
• F15B 15/28 - Moyens pour indiquer la position, p. ex. fin de course

Abrégé

HAWE Altenstadt Holding GmbH210384 PWO gilggll GSKHJune 28, 2019ABSTRACTThe chassis of a transportable device comprises a base structure, four casters arranged thereon, four lowerable and raiseable support feet also mounted on the base structure, and a hydraulic support foot actuating device. The hydraulic support foot actuating device has a reservoir (1), a pump (2) manually operable by hand or foot, four support foot linear actuators (3) and a purely hydro-mechanical pipe and valve arrangement (4) which connects the reservoir (1), the pump (2) and the linear actuators (3) to one another. Therein, by means of hydraulic fluid delivered by the pump (2) from the reservoir (1) the two support feet assigned to two primary linear actuators (3a) can be fully extended until a mechanical stop is reached while raising the base structure by first applying pressure to the two primary linear actuators (3a) before applying pressure to the two other, secondary linear actuators (3b).Date Recue/Date Received 2020-11-05

Classes IPC  ?

• A61G 7/05 - Parties constitutives, détails ou accessoires de lits
• A61G 13/10 - Parties constitutives, détails ou accessoires
• B60B 33/00 - Roues à pivot en général

Produits et services

Electro-hydraulic linear drives for machines.

Produits et services

Electrohydraulic linear drives for machines.

Produits et services

Instruments hydrauliques destinés aux techniques de manipulation dans le domaine médical, notamment pour les tables d'opérations et les fauteuils de soins, pour les machines de fabrication et les machines automatiques de manipulation, pour les installations d'élévation et de transport. Instruments hydrauliques destinés aux techniques de manipulation pour les véhicules de locomotion terrestres, aériens et nautiques.