Patents by Inventor Ralf Naumann
Ralf Naumann 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: 11142240Abstract: A hydraulic unit for supplying pressure to a hydraulic steering system is provided having at least two hydraulic cylinders and at least one hydraulic pump (9, 10, 32, 33). It is essential that the hydraulic cylinders are of interacting configuration, by an annular space (6a, 6a, 28a, 28b) of the first hydraulic cylinder being connected via at least one hydraulic line to an annular space (6a, 6a, 28a, 28b) of the second hydraulic cylinder, and a piston space (5a, 5b, 29a, 29b) of the first hydraulic cylinder being connected via at least one hydraulic line to a piston space (5a, 5b, 29a, 29b) of the second hydraulic cylinder, and a hydraulic pump (9, 10, 32, 33) being arranged at least in a hydraulic line (7, 8, 30, 31) between the two annular spaces (6a, 6a, 28a, 28b) or in a hydraulic line (7, 8, 30, 31) between the two piston spaces (5a, 5b, 29a, 29b). Furthermore, the invention relates to methods for operating a hydraulic unit for supplying pressure to a hydraulic steering system, and to a steering system.Type: GrantFiled: September 25, 2018Date of Patent: October 12, 2021Assignee: Weber-Hydraulik GmbHInventors: Torsten Winkler, Ralf Naumann
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Publication number: 20190100240Abstract: A hydraulic unit for supplying pressure to a hydraulic steering system is provided having at least two hydraulic cylinders and at least one hydraulic pump (9, 10, 32, 33). It is essential that the hydraulic cylinders are of interacting configuration, by an annular space (6a, 6a, 28a, 28b) of the first hydraulic cylinder being connected via at least one hydraulic line to an annular space (6a, 6a, 28a, 28b) of the second hydraulic cylinder, and a piston space (5a, 5b, 29a, 29b) of the first hydraulic cylinder being connected via at least one hydraulic line to a piston space (5a, 5b, 29a, 29b) of the second hydraulic cylinder, and a hydraulic pump (9, 10, 32, 33) being arranged at least in a hydraulic line (7, 8, 30, 31) between the two annular spaces (6a, 6a, 28a, 28b) or in a hydraulic line (7, 8, 30, 31) between the two piston spaces (5a, 5b, 29a, 29b). Furthermore, the invention relates to methods for operating a hydraulic unit for supplying pressure to a hydraulic steering system, and to a steering system.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Applicant: Weber-Hydraulik GmbHInventors: Torsten Winkler, Ralf Naumann
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Publication number: 20180022380Abstract: A hydraulic drive arrangement (1) for the pressure supply of a hydraulic steering system (20), particularly for construction or agricultural machines, including a hydraulic pump (2) and an electric drive. It is essential that the electric drive is designed in a redundant fashion and has two separately controlled electric drive engines (3a, 3b), which are mechanically coupled via the hydraulic pump (2) in a rigid fashion, and that the separate control circuits (6a, 6b, 7a, 7b) are provided by which a variable load distribution can be specified for the electric drive engines (3a, 3b).Type: ApplicationFiled: July 19, 2017Publication date: January 25, 2018Applicant: Weber-Hydraulik GmbHInventors: Ralf Naumann, Torsten Winkler
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Patent number: 7278385Abstract: Camshaft adjusters are provided for changing the position of a camshaft of an internal combustion engine. One such camshaft adjuster has a locking position that, with regard to design, is freely selectable.Type: GrantFiled: March 6, 2006Date of Patent: October 9, 2007Assignee: Hydraulik-Ring GmbHInventors: Andreas Knecht, Gordon Neudoerfer, Ralf Naumann
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Patent number: 7275476Abstract: An oscillating motor for a camshaft adjusting device has a stator and a rotor mounted so as to be rotatable relative to one another. The stator has an inner wall and radially extending stator vanes connected to the inner wall. The rotor has a base member and radially extending rotor vanes connected to the base member. The rotor vanes have an end face, respectively, resting against the inner wall of the stator. The stator vanes have an end face, respectively, resting against a peripheral wall of the base member. The rotor vanes taper discontinuously from the end face of the rotor vanes, respectively, in a direction toward the base member so that the rotor vanes each have a widened section at the end face, respectively.Type: GrantFiled: July 29, 2003Date of Patent: October 2, 2007Assignee: Hydraulik-Ring GmbHInventors: Ralf Naumann, Gerold Sluka, Frank Heidl, Andreas Knecht
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Patent number: 7117832Abstract: A device for adjusting a camshaft of an internal combustion engine of a motor vehicle has a stator and a rotor fixedly connected to a camshaft and rotatable relative to the stator. A drive wheel is fixedly connected to the stator and is centered by the camshaft. The stator has a peripheral area provided with a centering element interacting with a counter element provided on the drive wheel for aligning the drive wheel in a rotational direction relative to the stator.Type: GrantFiled: January 30, 2004Date of Patent: October 10, 2006Assignee: Hydraulik-Ring GmbHInventors: Ralf Naumann, Gerold Sluka, Andreas Knecht
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Publication number: 20060144357Abstract: Camshaft adjusters are provided for changing the position of a camshaft of an internal combustion engine. One such camshaft adjuster has a locking position that, with regard to design, is freely selectable.Type: ApplicationFiled: March 6, 2006Publication date: July 6, 2006Applicant: Hydraulik-Ring GmbHInventors: Andreas Knecht, Gordon Neudoerfer, Ralf Naumann
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Publication number: 20050011481Abstract: A device for adjusting a camshaft of an internal combustion engine of a motor vehicle has a stator and a rotor fixedly connected to a camshaft and rotatable relative to the stator. A drive wheel is fixedly connected to the stator and is centered by the camshaft. The stator has a peripheral area provided with a centering element interacting with a counter element provided on the drive wheel for aligning the drive wheel in a rotational direction relative to the stator.Type: ApplicationFiled: January 30, 2004Publication date: January 20, 2005Applicant: HYDRAULIK-RING GMBHInventors: Ralf Naumann, Gerold Sluka, Andreas Knecht
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Publication number: 20040177751Abstract: An oscillating motor for a camshaft adjusting device has a stator and a rotor mounted so as to be rotatable relative to one another. The stator has an inner wall and radially extending stator vanes connected to the inner wall. The rotor has a base member and radially extending rotor vanes connected to the base member. The rotor vanes have an end face, respectively, resting against the inner wall of the stator. The stator vanes have an end face, respectively, resting against a peripheral wall of the base member. The rotor vanes taper discontinuously from the end face of the rotor vanes, respectively, in a direction toward the base member so that the rotor vanes each have a widened section at the end face, respectively.Type: ApplicationFiled: July 29, 2003Publication date: September 16, 2004Applicant: HYDRAULIK-RING GMBHInventors: Ralf Naumann, Gerold Sluka, Frank Heidl, Andreas Knecht
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Patent number: 6722327Abstract: A device for an internal combustion engine includes a cell wheel and a blade wheel, which is mounted in the cell wheel so as to be relatively moveable and is actuated hydraulically by oil and via pressure chambers. The oil flows through axial lines into the pressure chambers, which are designed, on the one hand, between a shaft of an axial fastening screw, inserted from one face side of the camshaft, and a control sleeve, which envelops the shaft and rests in at least one receiving borehole, and is designed, on the other hand, between the control sleeve and a borehole, which is arranged coaxially to the latter and belongs to a hub. For an optimal design of the lines by the control sleeve and a simple assembly of the control sleeve, the control sleeve and the fastening screw, exhibiting the shaft, are inserted starting from the same face side, which control sleeve rests in corresponding receiving boreholes of the hub.Type: GrantFiled: July 18, 2002Date of Patent: April 20, 2004Assignee: Dr. Ing. h.c.F. Porsche AGInventors: Andreas Knecht, Gerold Sluka, Ralf Naumann
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Patent number: 6584944Abstract: An arrangement for the relative angle-of-rotation adjustment of a camshaft with respect to a driving wheel has an interior part which is non-rotatably connected with the camshaft. A driven cell wheel has several cells which are distributed along the circumference and are bounded by webs and can be divided into two pressure spaces by the webs or blades guided therein in an angularly movable manner. At least one locking device, which is operative between the interior part and the cell wheel, can lock the interior part with respect to the cell wheel in at least one end position. At least one blade of the interior part has a head part having at least one locking element which interacts with a locking structure provided on at least one web of the cell wheel.Type: GrantFiled: August 16, 2001Date of Patent: July 1, 2003Assignees: Dr. Ing. h.c.F. Porsche AG, Hydraulik Ring GmbH, AutomobiltechnikInventors: Gerold Sluka, Edwin Palesch, Ralf Naumann
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Publication number: 20030015157Abstract: A device for an internal combustion engine includes a cell wheel and a blade wheel, which is mounted in the cell wheel so as to be relatively moveable and is actuated hydraulically by oil and via pressure chambers. The oil flows through axial lines into the pressure chambers, which are designed, on the one hand, between a shaft of an axial fastening screw, inserted from one face side of the camshaft, and a control sleeve, which envelops the shaft and rests in at least one receiving borehole, and is designed, on the other hand, between the control sleeve and a borehole, which is arranged coaxially to the latter and belongs to a hub. For an optimal design of the lines by the control sleeve and a simple assembly of the control sleeve, the control sleeve and the fastening screw, exhibiting the shaft, are inserted starting from the same face side, which control sleeve rests in corresponding receiving boreholes of the hub.Type: ApplicationFiled: July 18, 2002Publication date: January 23, 2003Applicant: DR. Ing. h.c.F. Porsche AG and Hydraulik Ring GmbHInventors: Andreas Knecht, Gerold Sluka, Ralf Naumann
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Patent number: 6454544Abstract: A pump for conveying a liquid has a housing and a shaft rotatably supported in the housing. An eccentric drive is arranged in the housing. At least one drive element is provided and is configured to be driven by the eccentric drive. The shaft is configured to adjust the eccentricity of the eccentric drive. The drive element is configured to be adjusted according to the eccentricity of the eccentric drive by a translatory movement in a direction transverse to the shaft.Type: GrantFiled: December 18, 2000Date of Patent: September 24, 2002Assignee: Hydraulik-Ring GmbHInventors: Edwin Palesch, Gerold Sluka, Ralf Naumann
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Publication number: 20020026916Abstract: An arrangement for the relative angle-of-rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel, had an interior part which is non-rotatably connected with the camshaft and which has at last approximately radially extending webs or blades. A driven cell wheel has several cells which are distributed along the circumference and are bounded by webs and can be divided into two pressure spaces by the webs or blades guided therein in an angularly movable manner. During the admission or discharge of hydraulic pressure to or from the pressure spaces by way of control lines, the camshaft is rotatable by way of the webs or blades between two end positions relative to the cell wheel. At least one locking device, which is operative between the interior part and the cell wheel, can lock the interior part with respect to the cell wheel in at least one end position.Type: ApplicationFiled: August 16, 2001Publication date: March 7, 2002Inventors: Gerold Sluka, Edwin Palesch, Ralf Naumann
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Publication number: 20010004441Abstract: A pump for conveying a liquid has a housing and a shaft rotatably supported in the housing. An eccentric drive is arranged in the housing. At least one drive element is provided and is configured to be driven by the eccentric drive. The shaft is configured to adjust the eccentricity of the eccentric drive. The drive element is configured to be adjusted according to the eccentricity of the eccentric drive by a translatory movement in a direction transverse to the shaft.Type: ApplicationFiled: December 18, 2000Publication date: June 21, 2001Applicant: Hydraulik-Ring GmbHInventors: Edwin Palesch, Gerold Sluka, Ralf Naumann