Patents by Inventor Jörg Dantlgraber
Jörg Dantlgraber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9644617Abstract: The disclosure relates to a hydrostatic axial piston machine having a housing, having a drive shaft, to which a flange disc is fastened in a rotationally fixed manner, and having a swash plate, to which a rotor disc, driven by the drive shaft or the flange disc, is rotatably mounted, and having a plurality of displacement units arranged distributed between the flange disc and the rotor disc and around the axis of the drive shaft, each displacement unit comprising a cylinder sleeve and a piston which extends into the cylinder sleeve and has a ball head and a spherical joint head which extends into the cylinder sleeve, wherein during operation, the piston plunges more or less far into the cylinder sleeve.Type: GrantFiled: March 21, 2013Date of Patent: May 9, 2017Assignee: Robert Bosch GmbHInventors: Joerg Dantlgraber, David Breuer, Joerg Weingart, Michael Gaumnitz, Marcus Simon, Andreas Illmann, Christoph Gesterkamp
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Publication number: 20150078923Abstract: The disclosure relates to a hydrostatic axial piston machine having a housing, having a drive shaft, to which a flange disc is fastened in a rotationally fixed manner, and having a swash plate, to which a rotor disc, driven by the drive shaft or the flange disc, is rotatably mounted, and having a plurality of displacement units arranged distributed between the flange disc and the rotor disc and around the axis of the drive shaft, each displacement unit comprising a cylinder sleeve and a piston which extends into the cylinder sleeve and has a ball head and a spherical joint head which extends into the cylinder sleeve, wherein during operation, the piston plunges more or less far into the cylinder sleeve.Type: ApplicationFiled: March 21, 2013Publication date: March 19, 2015Inventors: Joerg Dantlgraber, David Breuer, Joerg Weingart, Michael Gaumnitz, Marcus Simon, Andreas Illmann, Christoph Gesterkamp
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Patent number: 8151689Abstract: There is disclosed a radial piston machine comprising a cylinder block having at least one bore in which a piston supported on an eccentric disk is movably guided via roll bodies, wherein at least one hydrostatic relieving field is provided between the piston and the roll body. According to the invention, the active surface A2 of the relieving field is equal to or larger than the active piston area A1 of the piston restricting a cylinder chamber and the relieving field is in fluid communication with the cylinder chamber via a hydraulic resistance.Type: GrantFiled: January 23, 2008Date of Patent: April 10, 2012Assignee: Robert Bosch GmbHInventor: Jörg Dantlgraber
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Patent number: 7828540Abstract: Disclosed is a drive unit, in particular for an injection unit or an ejector of an injection molding machine, comprising a stroke spindle device with a spindle and a spindle nut, and a prestressing device for prestressing the spindle that is dischargeable in a displacement phase of the stroke spindle device and is chargeable when the spindle is driven in the opposite direction, wherein the stroke spindle device and the prestressing device are supported by the same component, and wherein a load measuring device is provided for measuring the load acting on the spindle, which senses the forces acting on the component.Type: GrantFiled: July 1, 2005Date of Patent: November 9, 2010Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Patent number: 7811080Abstract: The invention is directed to an injection unit, in particular for an injection molding machine, comprising a screw which is guided in a plastication cylinder in a rotatable and axially movable manner and via which plastic material undergoes plastication and can be injected into a tool cavity. The screw is driven via an electric drive including an electric motor and is operatively connected to a support cylinder having a pressure chamber to which dynamic and/or support pressure can be applied during plastication and injection. The electric motor is coupled to a hydrostatic machine which during plastication is driven by the pressure medium displaced from the pressure chamber and which during injection conveys pressure medium into the pressure chamber so as to build up support pressure.Type: GrantFiled: February 24, 2006Date of Patent: October 12, 2010Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Patent number: 7704068Abstract: Disclosed is a drive unit, in particular for a closing unit, an injection unit, or an ejector of an injection molding machine. The drive unit comprises a double-acting force transmitting element provided with a small and a large piston unit which are disposed in a cylinder. The large piston unit is adapted to be pressurized by a great force both in input and in output directions. According to the invention, both the large piston unit with respect to the cylinder and the cylinder with respect to a movable element of the drive of the small piston unit are spring-prestressed.Type: GrantFiled: July 1, 2005Date of Patent: April 27, 2010Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Patent number: 7686607Abstract: An actuator is disclosed, in particular for a locking unit of an injection compression machine, comprising a hydraulic force translator with two piston units moving relative to each other with different effective areas. The foregoing enclose a pressure chamber together with a cylinder or spacer of the force translator. The smaller piston unit is electrically driven, wherein the axial displacement of the smaller piston unit may be transmitted to the cylinder. The cylinder can be fixed relative to a chassis of the injection compression machine by means of a hydraulic clamping device. According to the invention, the pressure necessary for clamping is delivered by a high-pressure reservoir which may be charged during the displacement of the smaller piston unit.Type: GrantFiled: March 29, 2005Date of Patent: March 30, 2010Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Patent number: 7566981Abstract: An actuating drive for a rotor blade in a wind power installation is provided with an electric motor and a frequency converter which has a rectifier that is to be fed from a power supply system, a link connected to the rectifier, and a d.c.-to-a.c. inverter for feeding the motor, the link carrying a specified nominal operating voltage in a network-fed normal operation of the frequency converter. Furthermore, an auxiliary energy supply device is provided that is connected to the link. The auxiliary energy supply device includes and energy store which makes available a support voltage that amounts to less than 80% of the nominal operating voltage of the link. A diode is connected between the energy store and the link, and is arranged, with regard to its forward direction, in such a way that it feeds a support voltage from the energy store into the link if the link voltage falls below the support voltage.Type: GrantFiled: June 29, 2006Date of Patent: July 28, 2009Assignee: Bosch Rexroth AGInventors: Steffen Kunkel, Karl-Günter Herrmann, Michael Hörning, Berno Kobelbauer, Jörg Dantlgraber, Stephan Becker, Gunther Neidlein, Bernd Schnurr
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Patent number: 7555901Abstract: What is disclosed is a drive mechanism, in particular for blanking and nibbling machines, comprising a hydraulic force transmitting element and a spindle drive for driving the force transmitting element, wherein a pre-tensioning means for pre-tensioning the force transmitting element is provided.Type: GrantFiled: November 10, 2004Date of Patent: July 7, 2009Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Patent number: 7537026Abstract: An on-off valve is disclosed, especially a fast-acting on-off valve, wherein a plunger is pretensioned in a base position. The plunger has a plurality of parallel control edges via which a plurality of sectional opening cross-sections, arranged in parallel in a hydraulic manner, can be jointly actuated to open or close when the valve is switched.Type: GrantFiled: April 5, 2005Date of Patent: May 26, 2009Assignee: Bosch Rexroth AGInventors: Jörg Dantlgraber, Heino Försterling, Rudolf Scheidl, Bernd Winkler
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Publication number: 20090107744Abstract: A hybrid drive is disclosed, having at least two primary assemblies and a hydraulic or electric machine; one primary assembly and the hydraulic or electric machine are operatively connected to a drive train, and the hydraulic or electric machine, with this primary assembly, forms a parallel hybrid drive, and with the other primary assembly, it forms a serial hybrid drive.Type: ApplicationFiled: September 17, 2008Publication date: April 30, 2009Inventors: Heino Foersterling, Alexander Mark, Alfred Feuser, Rudolf Schaeffer, Joerg Dantlgraber, Richard Bauer
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Patent number: 7470116Abstract: What is disclosed is an axial-piston machine having at least one swash plate and one cylinder drum supported thereon, which includes a multiplicity of cylinder sleeves. To the cylinder sleeves a row of pistons is associated which is connected with a shaft. In accordance with the invention, the cylinder sleeves are articulatedly mounted in the cylinder drum.Type: GrantFiled: December 5, 2003Date of Patent: December 30, 2008Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Publication number: 20080268091Abstract: The invention is directed to an injection unit, in particular for an injection molding machine, comprising a screw which is guided in a plastication cylinder in a rotatable and axially movable manner and via which plastic material undergoes plastication and can be injected into a tool cavity. The screw is driven via an electric drive including an electric motor and is operatively connected to a support cylinder having a pressure chamber to which dynamic and/or support pressure can be applied during plastication and injection. The electric motor is coupled to a hydrostatic machine which during plastication is driven by the pressure medium displaced from the pressure chamber and which during injection conveys pressure medium into the pressure chamber so as to build up support pressure.Type: ApplicationFiled: February 24, 2006Publication date: October 30, 2008Inventor: Joerg Dantlgraber
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Publication number: 20080205802Abstract: There is disclosed a radial piston machine comprising a cylinder block having at least one bore in which a piston supported on an eccentric disk is movably guided via roll bodies, wherein at least one hydrostatic relieving field is provided between the piston and the roll body. According to the invention, the active surface A2 of the relieving field is equal to or larger than the active piston area A1 of the piston restricting a cylinder chamber and the relieving field is in fluid communication with the cylinder chamber via a hydraulic resistance.Type: ApplicationFiled: January 23, 2008Publication date: August 28, 2008Applicant: Robert Bosch GmbHInventor: Joerg Dantlgraber
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Publication number: 20080199556Abstract: Disclosed is a drive unit, in particular for an injection unit or an ejector of an injection molding machine, comprising a stroke spindle device with a spindle and a spindle nut, and a prestressing device for prestressing the spindle that is dischargeable in a displacement phase of the stroke spindle device and is chargeable when the spindle is driven in the opposite direction, wherein the stroke spindle device and the prestressing device are supported by the same component, and wherein a load measuring device is provided for measuring the load acting on the spindle, which absorbs the forces acting on the component.Type: ApplicationFiled: July 1, 2005Publication date: August 21, 2008Applicant: BOSCH REXROTH AGInventor: Joerg Dantlgraber
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Publication number: 20080159879Abstract: An axial piston machine includes two cylinder drums which are guided in a housing, can be respectively rotated about a drum axis, and are respectively supported on an inclined surface arranged in the direction of a shaft rotational axis. The inclined surfaces are located in the region between the two cylinder drums and the channels for supplying and releasing pressure end in the two inclined surfaces, i.e. pressure is supplied and released centrally.Type: ApplicationFiled: February 21, 2005Publication date: July 3, 2008Inventors: Joerg Dantlgraber, Rudolf Schaeffer
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Patent number: 7351053Abstract: A drive unit, in particular for a closing unit, an injection unit, or an ejector of an injection molding machine, may be used where a high axial force is applied through a hydraulic power converter. A cylinder of the power converter may be fixed relative to a frame of the injection molding machine through the intermediary of a holding device which is functionally separate from guidance of the cylinder on the frame of the injection molding machine.Type: GrantFiled: October 15, 2004Date of Patent: April 1, 2008Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber
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Publication number: 20080050464Abstract: An actuator is disclosed, in particular for a locking unit of an injection compression machine, comprising a hydraulic force translator with two piston units moving relative to each other with different effective areas. The foregoing enclose a pressure chamber together with a cylinder or spacer of the force translator. The smaller piston unit is electrically driven, wherein the axial displacement of the smaller piston unit may be transmitted to the cylinder. The cylinder can be fixed relative to a chassis of the injection compression machine by means of a hydraulic clamping device. According to the invention, the pressure necessary for clamping is delivered by a high-pressure reservoir which may be charged during the displacement of the smaller piston unit.Type: ApplicationFiled: March 29, 2005Publication date: February 28, 2008Applicant: BOSCH REXROTH AGInventor: Joerg Dantlgraber
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Publication number: 20070286731Abstract: A wind power plant having a device for adjusting the angle of pitch of the rotor blades situated on a hub, the rotor blades being able to be set via respectively at least one asynchronous motor in normal operation, and being able to be rotated into their safety position (feathered pitch) in emergency operation. The asynchronous motor is fed in emergency operation via a commutator driven by a DC motor from a DC source that is independent of the network.Type: ApplicationFiled: March 29, 2007Publication date: December 13, 2007Inventor: Joerg Dantlgraber
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Patent number: 7306447Abstract: Disclosed is an injection unit (1) for an injection molding machine, comprising a screw (4) that is driven by means of a spindle drive (18). The spindle drive (18) is driven via an electric motor (6). Additionally, a force that acts in an axial direction is transmitted to the screw of the injection unit (1) via a hydraulic cylinder (38). According to the invention, a pump (48, 68) is driven via the electric motor (6). A pressure chamber (44) of the cylinder (38) can be supplied with more pressurizing means via said pump (48, 68) than is needed during an axial displacement of the plunger (36).Type: GrantFiled: November 10, 2004Date of Patent: December 11, 2007Assignee: Bosch Rexroth AGInventor: Joerg Dantlgraber