Patents by Inventor Ralf Maier
Ralf Maier 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: 11898978Abstract: A sensor system, particularly for monitoring the mixing of at least two fluids and a method for monitoring the mixture of at least two liquids. The present invention provides a sensor system for fluids, comprising at least two level sensor which are arranged vertically one upon the other on and connected to an electronic circuit board, four electrodes of four conductivity sensors which are arranged horizontally next to each other at the bottom of and connected to the electronic circuit board; and a temperature sensor which is connected to the electronic circuit board; a connector for connecting the electronic circuit board to a controller; wherein the electronic circuit board is embedded in a hot melt compound which is surrounded by an injection molded housing.Type: GrantFiled: September 23, 2022Date of Patent: February 13, 2024Assignee: STRATEC SEInventors: Michael Burkart, Ralf Maier
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Patent number: 11648492Abstract: A device for degassing and/or dehydrating a hydraulic oil includes a flow lance, a flow duct, and a decoupling module. The flow lance includes a restriction site via which the hydraulic oil flows under a high pressure drop. The flow duct is configured as a pipe that is located downstream of the restriction site. The quantity of oil that flows via the restriction site and a throughflow cross section of the restriction site are coordinated to one another such that a cavitation zone or supercavitation zone forms downstream of the restriction site. The flow duct has a significantly larger cross section with respect to the throughflow cross section of the restriction site. For a quiet operation of the device, the flow lance is held in the decoupling module via which the flow lance is configured to be fastened in a vibration-decoupled manner to a tank.Type: GrantFiled: December 17, 2019Date of Patent: May 16, 2023Assignee: Robert Bosch GmbHInventors: Bastian Reusch, Hermann Mehling, Ralf Maier
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Publication number: 20230142205Abstract: A sensor system, particularly for monitoring the mixing of at least two fluids and a method for monitoring the mixture of at least two liquids. The present invention provides a sensor system for fluids, comprising at least two level sensor which are arranged vertically one upon the other on and connected to an electronic circuit board, four electrodes of four conductivity sensors which are arranged horizontally next to each other at the bottom of and connected to the electronic circuit board; and a temperature sensor which is connected to the electronic circuit board; a connector for connecting the electronic circuit board to a controller; wherein the electronic circuit board is embedded in a hot melt compound which is surrounded by an injection molded housing.Type: ApplicationFiled: September 23, 2022Publication date: May 11, 2023Inventors: Michael Burkart, Ralf Maier
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Publication number: 20230139577Abstract: A hand-held power tool, in particular a hammer drill, includes a tool holder and a housing which has two housing half-shells. The hand-held power tool further includes a drive unit for driving a tool holder arranged in the housing. The drive unit includes at least one drive motor arranged in a motor support and a gear unit arranged in a gear unit housing. The motor support is connected directly to at least one of the two housing half-shells via at least one non-positive connection and at least one positive-locking connection. A relevant fastening axis is assigned to the at least one non-positive connection and to the at least one positive-locking connection. The fastening axis is arranged at right angles to and at a distance from an axis of rotation assigned to the tool holder.Type: ApplicationFiled: October 19, 2022Publication date: May 4, 2023Inventors: Fritz Schlegel, Ralf Maier
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Patent number: 11517158Abstract: A dust extraction device for a hand-held power tool includes a housing, a mechanical interface for releasably connecting the dust extraction device to the hand-held power tool, a dust-collecting chamber which is connected to a filter unit, and a filter-cleaning unit. The filter-cleaning unit has an impact element which is mounted moveably in and/or on the housing of the dust extraction device. The impact element is designed to act upon the filter unit directly with an impact-like force.Type: GrantFiled: September 9, 2019Date of Patent: December 6, 2022Assignee: Robert Bosch GmbHInventors: Tobias Bayha, Charlotte Meiser, Hardy Schmid, Jan-Simon Blind, Joerg Kaiser, Michael Wall, Ralf Maier, Rudi Habermann, Simon Schart
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Patent number: 11486389Abstract: A hydraulic unit includes an assembly with a hydrostatic positive displacement pump and an electric motor. The positive displacement pump includes a driving shaft configured to be driven by the electric motor. The hydraulic unit also includes an inert mass on which the assembly is rigidly mounted so as to minimize vibration of the assembly and reduce noise emission from the assembly.Type: GrantFiled: October 16, 2019Date of Patent: November 1, 2022Assignee: Robert Bosch GmbHInventors: Jan Lukas Bierod, Andreas Guender, Marco Scholz, Ralf Maier, Rene Huettl, Stefan-Georg Backhaus
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Patent number: 11396893Abstract: A hydraulic unit includes a tank configured to be filled with a hydraulic fluid. The tank has at least one inflow connection and at least one outflow connection. A flow guide for the hydraulic fluid is formed between the inflow connection and the outflow connection. The flow guide is configured to have at least two 180° flow arcs configured to cool and calm the hydraulic fluid and to avoid dead zones.Type: GrantFiled: October 15, 2019Date of Patent: July 26, 2022Assignee: Robert Bosch GmbHInventors: Alexander Huber, Andreas Guender, Jan Lukas Bierod, Marco Scholz, Mark-Patrick Muehlhausen, Matthias Steiner, Ralf Maier, Rene Huettl
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Patent number: 11346375Abstract: A tank has an annular tank space, and a separating wall for separating an inflow connection from a drain connection is provided therein. Alternatively, or in addition thereto, a partition for degassing the oil in the tank is provided. Furthermore, alternatively or in addition thereto, at least one partition for extending a flow path of the oil is provided. It is also conceivable, alternatively or in addition thereto, to arrange a cooling device in the annular space.Type: GrantFiled: August 9, 2017Date of Patent: May 31, 2022Assignee: Robert Bosch GmbHInventors: Andreas Guender, Jan Lukas Bierod, Rebecca Lacour, Mark-Patrick Muehlhausen, Carina Issinger, Ralf Maier, Rene Huettl
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Patent number: 11325629Abstract: The invention relates to a stackable transport trolley, in particular a stackable shopping trolley, comprising a chassis and a basket; the chassis includes a support frame and a frame of rods which is arranged on the support frame, the frame of rods supporting the basket.Type: GrantFiled: October 23, 2020Date of Patent: May 10, 2022Assignee: Wanzl GmbH & Co. KGaAInventors: Dirk Webert, Johann Daminger, Hermann Eichele, Markus Riesenegger, Ralf Maier, Michael Gerstmaier, Paul Ruf, Karl-Heinz Horn, Georg Wiedemann, Thomas Gasche
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Patent number: 11204121Abstract: A hydraulic system has a fluid path which connects two system components fluidically to one another and which comprises a hydraulic hose. It is known to form a fluid path between two components of a hydraulic system, for example between a pump and a control block, by a single hydraulic hose which is designed in accordance with the maximum volume flow and the maximum pressure. A hydraulic hose for large volume flows and high pressures is disproportionately expensive relative to a hydraulic hose for smaller volume flows and, on account of its larger internal and external diameters, has a larger minimum bending radius than a hydraulic hose for smaller volume flows. In order to provide a cost-effective and compact structure, a hydraulic system according to the disclosure has the fluid path formed by at least two hydraulic hoses arranged fluidically parallel to one another.Type: GrantFiled: May 17, 2019Date of Patent: December 21, 2021Assignee: Robert Bosch GmbHInventors: Andreas Guender, Jan Lukas Bierod, Marco Scholz, Ralf Maier, Rene Huettl
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Patent number: 11149721Abstract: A hydraulic unit having a housing includes a tank and a pump arranged adjacent to one another in a fluid supply region, and a controller region is arranged thereabove. Since the pump is embodied in an upright design, a compact hydraulic unit with a small footprint is implemented.Type: GrantFiled: October 17, 2019Date of Patent: October 19, 2021Assignee: Robert Bosch GmbHInventors: Andreas Guender, Jan Lukas Bierod, Marco Scholz, Ralf Maier, Rene Huettl
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Publication number: 20210277918Abstract: A has having an annular tank space, and a separating wall for separating an inflow connection from a drain connection is provided therein. Alternatively, or in addition thereto, a partition for degassing the oil in the tank is provided. Furthermore, alternatively or in addition thereto, at least one partition for extending a flow path of the oil is provided. It is also conceivable, alternatively or in addition thereto, to arrange a cooling device in the annular space.Type: ApplicationFiled: August 9, 2017Publication date: September 9, 2021Inventors: Andreas Guender, Jan Lukas Bierod, Rebecca Lacour, Mark-Patrick Muehlhausen, Carina Issinger, Ralf Maier, Rene Huettl
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Patent number: 11059507Abstract: The invention relates to a stackable transport trolley, in particular a stackable shopping trolley, comprising a chassis and a basket; the chassis includes a support frame and a frame of rods which is arranged on the support frame, the frame of rods supporting the basket.Type: GrantFiled: October 21, 2016Date of Patent: July 13, 2021Assignee: WANZL GMBH & CO. KGAAInventors: Dirk Webert, Johann Daminger, Hermann Eichele, Markus Riesenegger, Ralf Maier, Michael Gerstmaier, Paul Ruf, Karl-Heinz Horn, Georg Wiedemann, Thomas Gasche
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Patent number: 10982407Abstract: A baseplate has a top side that includes a support surface and a collecting surface. A hydraulic appliance is configured to be fastened on the support surface. The collecting surface is arranged lower in relation to the support surface so as to collect leakage oil of the appliance.Type: GrantFiled: October 16, 2019Date of Patent: April 20, 2021Assignee: Robert Bosch GmbHInventors: Andreas Guender, Jan Lukas Bierod, Ralf Maier, Rene Huettl, Marco Scholz, Stefan-Georg Backhaus
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Publication number: 20210107550Abstract: The invention relates to a stackable transport trolley, in particular a stackable shopping trolley, comprising a chassis and a basket; the chassis includes a support frame and a frame of rods which is arranged on the support frame, the frame of rods supporting the basket.Type: ApplicationFiled: October 23, 2020Publication date: April 15, 2021Inventors: Dirk WEBERT, Johann DAMINGER, Hermann EICHELE, Markus RIESENEGGER, Ralf MAIER, Michael GERSTMAIER, Paul RUF, Karl-Heinz HORN, Georg WIEDEMANN, Thomas GASCHE
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Patent number: 10843917Abstract: A micromechanical device having a substrate wafer, a functional layer situated above it which has a mobile micromechanical structure, and a cap situated on top thereof, having a first cavity, which is formed at least by the substrate wafer and the cap and which includes the micromechanical structure. The micromechanical device has a fixed part and a mobile part, which are movably connected to each other with at least one spring element, and the first cavity is situated in the mobile part. Also described is a method for producing the micromechanical device.Type: GrantFiled: April 5, 2017Date of Patent: November 24, 2020Assignee: Robert Bosch GmbHInventors: Steffen Zunft, Bonsang Kim, Ando Feyh, Andrew Graham, Gary O'Brien, Michael Baus, Ralf Maier, Mariusz Koc
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Publication number: 20200197837Abstract: A device for degassing and/or dehydrating a hydraulic oil includes a flow lance, a flow duct, and a decoupling module. The flow lance includes a restriction site via which the hydraulic oil flows under a high pressure drop. The flow duct is configured as a pipe that is located downstream of the restriction site. The quantity of oil that flows via the restriction site and a throughflow cross section of the restriction site are coordinated to one another such that a cavitation zone or supercavitation zone forms downstream of the restriction site. The flow duct has a significantly larger cross section with respect to the throughflow cross section of the restriction site. For a quiet operation of the device, the flow lance is held in the decoupling module via which the flow lance is configured to be fastened in a vibration-decoupled manner to a tank.Type: ApplicationFiled: December 17, 2019Publication date: June 25, 2020Inventors: Bastian Reusch, Hermann Mehling, Ralf Maier
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Publication number: 20200164909Abstract: The invention relates to a stackable transport trolley (10), in particular a stackable shopping trolley (10), comprising a chassis (12) and a basket (14); the chassis (12) includes a support frame (16) and a frame of rods (18) which is arranged on the support frame (16), the frame of rods (18) supporting the basket (14).Type: ApplicationFiled: October 21, 2016Publication date: May 28, 2020Inventors: Dirk WEBERT, Johann DAMINGER, Hermann EICHELE, Markus RIESENEGGER, Ralf MAIER, Michael GERSTMAIER, Paul RUF, Karl-Heinz HORN, Georg WIEDEMANN, Thomas GASCHE
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Publication number: 20200124044Abstract: A hydraulic unit includes an assembly with a hydrostatic positive displacement pump and an electric motor. The positive displacement pump includes a driving shaft configured to be driven by the electric motor. The hydraulic unit also includes an inert mass on which the assembly is rigidly mounted so as to minimize vibration of the assembly and reduce noise emission from the assembly.Type: ApplicationFiled: October 16, 2019Publication date: April 23, 2020Inventors: Jan Lukas Bierod, Andreas Guender, Marco Scholz, Ralf Maier, Rene Huettl, Stefan-Georg Backhaus
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Publication number: 20200124035Abstract: A hydraulic unit having a housing includes a tank and a pump arranged adjacent to one another in a fluid supply region, and a controller region is arranged thereabove. Since the pump is embodied in an upright design, a compact hydraulic unit with a small footprint is implemented.Type: ApplicationFiled: October 17, 2019Publication date: April 23, 2020Inventors: Andreas Guender, Jan Lukas Bierod, Marco Scholz, Ralf Maier, Rene Huettl