Patents Assigned to Rexroth
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Publication number: 20140236433Abstract: A power-split transmission for a traction drive includes a hydraulic power branch and a further power branch. In order to control a velocity, a displacement volume of a hydraulic pump of the hydraulic power branch is configured to be adjusted by a hydraulic actuating device. For the purpose of adjustment, a control pressure medium can be applied to the actuating device by a control valve. An additional pressure-control device is configured to be used to set a control pressure of the control pressure medium to a setpoint value which is dependent on a drive range of the transmission or of the traction drive.Type: ApplicationFiled: February 18, 2014Publication date: August 21, 2014Applicant: Dana Rexroth Transmission SystemsInventors: Matthias Mueller, Walter Scandella, Steffen Mutschler
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Patent number: 8726977Abstract: Pressure vessel assembly for a pressurized fluid system, comprises an enclosed outer casing, at least one internal tube extending within the casing, at least one fluid accumulator disposed within the at least one internal tube, and at least one cooling passage provided within the at least one internal tube and defined by a clearance between the at least one hydraulic fluid accumulator and the at least one internal tube. The pressure vessel assembly further includes a fluid storage compartment formed between the outer casing and the at least one internal tube. The fluid storage compartment is at least partially filled with a working fluid. The pressurized fluid system also includes a cooling fan allowing forced airflow through the cooling passage for forced cooling of the at least one hydraulic fluid accumulator and the working fluid in the storage compartment of the pressure vessel assembly.Type: GrantFiled: October 13, 2011Date of Patent: May 20, 2014Assignee: Bosch Rexroth CorporationInventor: Kenric Rose
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Publication number: 20130276925Abstract: The present invention relates to a pressure regulating device (1), in particular a hand- or foot-operated hydraulic controller for a heavy construction machine, characterised in that it comprises an electrical or electronic means (20) for determining the position of the actuator (18) or the push button (7) including a proportional sensor comprising, on the one hand, a mobile member (21) following the movement of the actuator (18) or a push button (7) and, on the other hand, a contactless means (22) for detecting the position of the mobile member (21) secured to the body (2), as well as an anti-tilting system, a load sensing system for controlling the pressure increase, the idling delivery of the heat engine, or a flow sharing system, comprising such a pressure regulating device (1).Type: ApplicationFiled: January 9, 2012Publication date: October 24, 2013Applicant: BOSCH REXROTH D.S.I.Inventors: Didier Merletti, Jean-Luc Boudou
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Patent number: 8499654Abstract: The invention relates to an electrically driven linear actuator for linearly moving a mass, in which at least one elongated actuator element, which, on the output side, acts upon the mass, is mounted inside a main pipe in a manner that enables it to slide in an axial direction, and which, on the input side, is coupled to a spindle nut that, itself, rests upon a spindle, which is rotationally mounted inside the main pipe and which can be placed in rotational motion by an electric motor.Type: GrantFiled: November 29, 2005Date of Patent: August 6, 2013Assignee: Bosch Rexroth AGInventor: Leo Ymker
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Patent number: 8434519Abstract: Pressure regulator device comprising a body (1), a minimum of a pressure reducer and a damper mounted in control and damping cavities, respectively, in the body (1), and a control member (4) pivoting on an upper face (10) of the body (1). The device is noteworthy in that the control and damping cavities have open ends in a peripheral face (12) of the body (1) and the control member (4) has parts (47) that are opposite the peripheral face (12) in order to face the open ends of the respective control and damping cavities, from which control (21) and damping pushrods, respectively, project. The present invention has an application in the hydraulic remote controls of civil engineering machines.Type: GrantFiled: October 16, 2009Date of Patent: May 7, 2013Assignee: Bosch Rexroth D.S.I.Inventors: Gérard Larzoe, Laurent Drutel
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Patent number: 8343009Abstract: A power-distributed wind turbine transmission for transmitting a torque generated by a rotor hub to an output pinion rotating with increased speed compared to the former to drive an electric generator, wherein at least two parallel-connected planetary stages are provided for power-distributed speed increase internal to the transmission, wherein further coupling of the rotor hub is carried out by means of a connection ring element on the input side of the transmission, which is rotatably supported by a large roller bearing at a fixed transmission housing, and which transmits the force flow in a power-distributed manner to the hollow gears of the parallel-connected planetary stages by means of cardan-like decoupling means formed thereon.Type: GrantFiled: December 4, 2007Date of Patent: January 1, 2013Assignee: Bosch Rexroth AGInventors: Gunter Berger, Gerhard Bauer
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Patent number: 8313298Abstract: A drive train between a rotor and a transmission having a torque support for a wind turbine generator system, including a rotor shaft extending from the rotor and supported in this area by a first rotor shaft bearing and extending to the transmission for converting the rotor speed into a desired generator speed, wherein the rotor shaft is supported by a second rotor shaft bearing formed in the manner of a moment bearing which is arranged on the input side within the transmission in order to receive the partial rotor forces, moments and weight forces and to directly pass them on to the torque support.Type: GrantFiled: January 26, 2007Date of Patent: November 20, 2012Assignee: Bosch Rexroth AGInventors: Günter Berger, Gerhard Bauer
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Patent number: 8178816Abstract: A device for resistance welding includes a welding clamp housing, a welding transformer, a welding clamp, a welding clamp drive for operating the welding clamp and a power supply using alternating supply voltage. The device may be built as small as possible and may be simple to expand. The power supply is implemented by a main converter and by drive and welding converters. The output of the main converter is connected to the inputs of the drive and welding converters. The inputs of the drive and welding converters are connected to one another. These connections are implemented by an a.c. voltage intermediate circuit.Type: GrantFiled: November 28, 2005Date of Patent: May 15, 2012Assignee: Bosch Rexroth AGInventors: Dieter Stellwag, Thomas Klinger
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Patent number: 8170066Abstract: With a method for synchronization in a communication system that includes a central participant and at least one further participant, at least one of the further participants being synchronized with the central participant, and, to this end, a telegram with synchronization information being transmitted by the central participant to the at least one further participant, particularly efficient synchronization of the at least one participant with the central participant results due to the fact that the telegram is a data telegram.Type: GrantFiled: October 11, 2005Date of Patent: May 1, 2012Assignee: Bosch Rexroth AGInventors: Rigobert Kynast, Ludwig Leurs, Thomas Schmid, Stephan Schultze
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Patent number: 8126019Abstract: In a method for time synchronization of subscribers connected via a cyclically operating communication system, an item of time information is transmitted to the subscribers to be synchronized. It is provided to transmit an item of absolute time information simultaneously to all subscribers to be synchronized, for initialization, and to implement a synchronization by recalculating the local times of the subscribes at least following one or a plurality of cycles having a known cycle time. The item of absolute time information and the known cycle times are used for the recalculation.Type: GrantFiled: November 15, 2005Date of Patent: February 28, 2012Assignee: Bosch Rexroth AGInventor: Stephan Schultze
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Patent number: 8112211Abstract: A method and device for controlled braking of a vehicle using a hydrostatic drive is provided. Two pivotal hydraulic motors are connected to a respective axle of the drive, driven by a hydraulic pump and regulated by a respective regulating circuit. For each axle of the drive, a respective reference variable containing the difference between a set value and the actual value of a speed of the driven wheel is continuously determined and fed back to the respective regulating circuit. A displacement of the axle load of the vehicle from a current deceleration (a) of the vehicle is dynamically determined. A resultant braking force acting on the axle driven by the hydraulic motor is determined and put into effect by the hydraulic motor through adjusting a corresponding pivot angle. A deceleration-dependent distribution of the braking force is then provided to the respective axle by a control program.Type: GrantFiled: December 15, 2006Date of Patent: February 7, 2012Assignee: Bosch Rexroth AGInventor: Martin Behm
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Patent number: 8079408Abstract: Pressure vessel assembly for a pressurized fluid system, comprises an enclosed outer casing, at least one internal tube extending within the casing, at least one fluid accumulator disposed within the at least one internal tube, and at least one cooling passage provided within the at least one internal tube and defined by a clearance between the at least one hydraulic fluid accumulator and the at least one internal tube. The pressure vessel assembly further includes a fluid storage compartment formed between the outer casing and the at least one internal tube. The fluid storage compartment is at least partially filled with a working fluid. The pressurized fluid system also includes a cooling fan allowing forced airflow through the cooling passage for forced cooling of the at least one hydraulic fluid accumulator and the working fluid in the storage compartment of the pressure vessel assembly.Type: GrantFiled: September 22, 2004Date of Patent: December 20, 2011Assignee: Bosch Rexroth CorporationInventor: Kenric Rose
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Patent number: 8079436Abstract: The invention relates to a vehicle having a drive engine/motor (2) for driving a locomotive drive (6) and for operating at least one hydraulic working circuit (4). The vehicle has a hydraulic accumulator (11) which is connected to a hydraulic machine (12). The hydraulic machine (12) is connected to an output shaft (5) which connects the drive engine/motor (2) to the locomotive drive (6).Type: GrantFiled: December 18, 2006Date of Patent: December 20, 2011Assignee: Bosch Rexroth AGInventors: Seppo Tikkanen, Matthias Mueller, Steffen Mutschler
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Patent number: 8069876Abstract: There is disclosed a sealing bush as well as a hydraulic unit fitted with the sealing bush and a check valve. The sealing bush is made of plastic and has, on an end face, a preferably conical elevation that can be brought into sealing contact with a bearing shoulder.Type: GrantFiled: September 16, 2005Date of Patent: December 6, 2011Assignee: Bosch Rexroth AGInventors: Brian Kane, Bernd Schmitt
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Patent number: 8061902Abstract: A floating bearing has a rotating, rotationally symmetric machine part (6), with an outer ring (10), which is non-rotatably supported in an intermediate bearing (1) that is located in the installation space of a housing (3, 8). An inner ring (11) is non-rotatably connected with the rotating machine part (6). A locking mechanism inhibits a relative motion in the circumferential direction between the housing (3, 8) and intermediate bearing (1) and permits a relative motion between the housing (3, 8) and intermediate bearing (1) along the rotation axis of the machine part (6).Type: GrantFiled: September 28, 2006Date of Patent: November 22, 2011Assignee: Bosch Rexroth AGInventor: Anton Wirthmann
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Patent number: 8043183Abstract: The invention relates to a hydrostatic piston engine (11) and a drive (1) for recovering brake energy. The drive comprises a driving shaft (4) and a first accumulator (12) for accumulating pressure energy. The first accumulator (12) is connected to a hydrostatic piston engine (11). Said hydrostatic piston engine (11) has a coupling (9) and can be connected to the driving shaft (4) by means of the coupling (9). The hydrostatic piston engine (11) comprises a housing in which a cylinder drum and the driving shaft (4) are rotatably received. The cylinder drum can be connected to the driving shaft (4) by means of the coupling (9) in a rotationally fixed manner.Type: GrantFiled: December 20, 2006Date of Patent: October 25, 2011Assignee: Bosch Rexroth AGInventors: Matthias Mueller, Steffen Mutschler
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Patent number: 8033580Abstract: A device (30) for feeding working fluid to an assembly (14) requiring working fluid includes at least one fluid channel (20, 20a-20d) extending from a surface (16a) and at least one screw element (22, 24) capable of being screwed from the surface (16a) into the at least one fluid channel (20, 20a-20d) for feeding working fluid into the fluid channel (20, 20a-20d) or for closing the fluid channel (20, 20a-20d), the at least one fluid channel (20, 20a-20d) having a first section (32) directly adjacent to the surface (16a) with a larger width, a second section (36) with a smaller width and, between the first section (32) and the second section (36), having a first transition region (34) with an annular surface (34a), and the screw element (22, 24) having at least one sealing surface (22c, 24c) capable of being brought into sealing engagement with the annular surface (34a).Type: GrantFiled: June 15, 2010Date of Patent: October 11, 2011Assignee: Rexroth Star GmbHInventors: Stefan Dorn, Alfred Haub, Andreas Schupies
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Patent number: 8028521Abstract: The invention relates to a catapult drive for an object to be accelerated, preferably the car of a fairground ride, wherein the object is accelerated by means of a driving element. The movement of the driving element is produced by a flexible drive and a hydraulic cylinder via which all movements of the driving element can be controlled. The invention also relates to a control system for suitably controlling the inventive catapult drive.Type: GrantFiled: February 27, 2006Date of Patent: October 4, 2011Assignee: Bosch Rexroth AGInventors: Sander Leonard Boeijen, Marten Fluks, Maarten Rik Leo Kuijpers
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Patent number: D686650Type: GrantFiled: November 27, 2012Date of Patent: July 23, 2013Assignee: Bosch Rexroth AGInventors: Martin Schultheiss, Christain Spielvogel
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Patent number: D710974Type: GrantFiled: October 19, 2012Date of Patent: August 12, 2014Assignee: Rexroth Pneumatics GmbHInventors: Benno Birke, Wolf-Dietrich Gerecke, Heinz Theo Paulus, Ludovic Marais