Patents by Inventor Ralph Wassermann
Ralph Wassermann 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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Publication number: 20260253776Abstract: An electromagnet, traversed by a longitudinal axis, has an armature arranged longitudinally movable along a stroke path, and a shielding element arranged in a magnetic circuit. The shielding element extends along the longitudinal axis and forms at least one impedance changing means on the stroke path, which defines an impedance change position for the armature, at which the electrical impedance can change as the armature approaches and/or passes the impedance change position, compared with a reference position on the stroke path of the armature.Type: ApplicationFiled: February 6, 2026Publication date: August 27, 2026Inventors: Robin Gruber, Ralph Wassermann
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Patent number: 12712105Abstract: An electromagnetic actuator for an assembly, in particular in a motor vehicle, may be mounted on a fluid chamber, which is designed to be connected to the actuator for fluid transfer when the actuator is installed in the assembly, which has a moving armature in an armature chamber, where the armature has a moving armature rod, where the actuator is designed to fill the armature chamber with fluid, in particular oil, in that the armature rod moves such that fluid is drawn into the armature chamber from the fluid chamber through a fluid path when the armature rod is connected to the fluid chamber for fluid transfer, and where a flow resistance in the fluid path between the armature chamber and the fluid chamber can be set to a first resistance level or a second resistance level.Type: GrantFiled: April 14, 2023Date of Patent: August 18, 2026Assignees: ZF Friedrichshafen AG, Magnet-Schultz GmbH & Co KGInventors: Dominik Guldenschuh, Markus Moosmann, Markus Diesch, Florian Schreiber, Ralph Wassermann
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Publication number: 20260029028Abstract: An overload clutch arrangement, through which a longitudinal axis passes, has a guide means, at least one latching element movably received in a bore of the guide means, a structural member having a latching receptacle, and a displacement element movable along the longitudinal axis and which can displace the at least one latching element into the latching receptacle, wherein the at least one latching element is adjustable between a latching position in which it engages in its latching receptacle and rotationally fixedly couples the guide means to the structural member and a freewheel position in which it is arranged outside its latching receptacle and allows freewheeling of the structural member relative to the guide means.Type: ApplicationFiled: July 18, 2025Publication date: January 29, 2026Inventors: Ralph Wassermann, Johannes Scholz, Robin Deuse, Jürgen Heinzmann
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Publication number: 20260016320Abstract: A sensor module includes a sensor housing, a Hall sensor, a magnet, and a movement transmission device which protrudes from the sensor housing. The Hall sensor or the magnet is attached to the movement transmission device for joint movement and another of the Hall sensor or magnet is arranged in a stationary manner relative to the sensor housing.Type: ApplicationFiled: July 9, 2025Publication date: January 15, 2026Inventors: Robin Gruber, Ralph Wassermann
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Patent number: 12510153Abstract: A locking unit can include: a housing having a fluid inlet and a fluid outlet which are connectable to a coolant circuit, and a pilot pressure chamber; a fluid duct which fluidically connects the fluid inlet to the pilot pressure chamber; a solenoid; a piston; a pilot valve, wherein an armature and/or an armature rod of the solenoid adjusts the pilot valve between a pilot valve open position which releases the fluid duct and a pilot valve closed position which closes the fluid duct; and a main valve, wherein a fluid pressure in the pilot pressure chamber adjusts the main valve between a main valve open position which releases the fluid outlet and a main valve closed position which closes the fluid outlet. The locking unit can lock the movement of the piston impingeable with pressure of fluid of the coolant circuit.Type: GrantFiled: April 15, 2024Date of Patent: December 30, 2025Inventors: Ralph Wassermann, Florian Hölzle
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Publication number: 20250389343Abstract: A flow control valve can include: a valve body having an inlet opening and an outlet opening on opposite sides of the body, and a fluid channel which fluidically connects the inlet opening to the outlet opening; an electromagnet penetrated by the fluid channel; and a sealing body that is adjustable between a closed position closing the fluid channel and an open position opening up the fluid channel. A method can include providing an armature with a longitudinal passage and a fixing groove on an inner circumferential side of the armature; providing an armature rod designed as a hollow part; inserting the armature rod into the longitudinal passage from a first side of the armature; inserting a deformation tool into the longitudinal passage from a second side of the armature; and moulding the armature rod into the fixing groove by the deformation tool.Type: ApplicationFiled: June 9, 2025Publication date: December 25, 2025Inventors: Ralph Wassermann, Martin Kächler
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Patent number: 12326160Abstract: A locking unit with a hydraulically actuable piston, an electromagnet with a coil and an armature, at least one latching element, a coupling rod, and a magnetic element. The coupling rod connects the magnetic element to the armature or an armature rod which is attached thereto, and a prestressing element fixes the magnetic element in a guide tube radially. As a result, an advantageous position determination is made possible by way of sensing of a magnetic field which is generated by the magnetic element.Type: GrantFiled: December 8, 2022Date of Patent: June 10, 2025Inventors: Ralph Wassermann, Florian Hölzle, Matthias Wetzler
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Publication number: 20250137531Abstract: A locking arrangement has an electromagnet having an armature and an armature rod, a component which is rotatable about an axis in a first direction of rotation and in an opposite second direction of rotation and has circumferential engagements, a latching means with a restoring surface, which is connected to the armature rod and is adjustable between a latching position and a release position, a spring element which pretensions the latching means into the latching position and allows the latching means to be restored into the release position. The rotatable component can act on the restoring surface during rotation in the second direction of rotation to bring the latching means into the release position counter to the spring force of the spring element.Type: ApplicationFiled: October 25, 2024Publication date: May 1, 2025Inventors: Robin Gruber, Ralph Wassermann
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Patent number: 12188558Abstract: A locking unit for locking the movement of a piston which can be acted on with pressure of a fluid, the locking unit having the piston, an electromagnet, and at least one detent element. The detent element interacts with an armature or an armature rod of the electromagnet. The piston has at least one detent receptacle, and the piston can be secured by a retaining interaction of the detent element with the detent receptacle. The piston is adjustable between a retracted position and an extended position, and the piston can be designed at least in sections as a hollow part.Type: GrantFiled: May 5, 2023Date of Patent: January 7, 2025Inventors: Ralph Wassermann, Florian Hölzle
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Patent number: 12129877Abstract: A locking unit with a hydraulically actuable piston, an electromagnet with a coil and an armature, at least one latching element, a coupling rod, and a magnetic element. The coupling rod connects the magnetic element to the armature or an armature rod which is attached thereto, and a prestressing element fixes the magnetic element in a guide tube radially. As a result, an advantageous position determination is made possible by way of sensing of a magnetic field which is generated by the magnetic element.Type: GrantFiled: December 8, 2022Date of Patent: October 29, 2024Inventors: Ralph Wassermann, Florian Hölzle, Matthias Wetzler
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Publication number: 20240353004Abstract: A locking unit can include: a housing having a fluid inlet and a fluid outlet which are connectable to a coolant circuit, and a pilot pressure chamber; a fluid duct which fluidically connects the fluid inlet to the pilot pressure chamber; a solenoid; a piston; a pilot valve, wherein an armature and/or an armature rod of the solenoid adjusts the pilot valve between a pilot valve open position which releases the fluid duct and a pilot valve closed position which closes the fluid duct; and a main valve, wherein a fluid pressure in the pilot pressure chamber adjusts the main valve between a main valve open position which releases the fluid outlet and a main valve closed position which closes the fluid outlet. The locking unit can lock the movement of the piston impingeable with pressure of fluid of the coolant circuit.Type: ApplicationFiled: April 15, 2024Publication date: October 24, 2024Inventors: Ralph Wassermann, Florian Hölzle
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Patent number: 12085168Abstract: A locking arrangement for an electric vehicle, that includes a locking unit, an electric motor, and an axle which is driveable by the electric motor. The locking unit can have a piston and serve for locking the movement of the piston which can be acted on with pressure of a fluid. The locking unit has an electromagnet and at least one detent element, and the detent element interacts with the armature or the armature rod of the electromagnet, and the piston has at least one detent receptacle, and the piston can be secured by the retaining interaction of the detent element with the detent receptacle. The piston can be adjustable between a retracted position and an extended position. The piston can act in at least one of the two positions on the axle in such a manner that the rotation of the axle is mechanically blocked.Type: GrantFiled: May 5, 2023Date of Patent: September 10, 2024Inventors: Ralph Wassermann, Florian Hölzle
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Patent number: 12044311Abstract: A locking unit for the parking lock of an automatic transmission, for locking the movement of a piston which is movable by a drive and which can be acted on with hydraulic pressure.Type: GrantFiled: June 4, 2021Date of Patent: July 23, 2024Assignee: SVM Schultz Verwaltungs-GmbH & Co. KGInventors: Ralph Wassermann, Florian Hölzle
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Publication number: 20240209940Abstract: A locking unit having a housing, a piston, a solenoid, a latching element, a guide element, and a sensor unit, wherein the sensor unit comprises a permanent magnet, a multidirectional Hall sensor for detecting a magnetic field of the permanent magnet, and a magnetic field changing means comprises a plurality of changing elements. One of either the permanent magnet or the multidirectional Hall sensor is arranged in a fixed position, wherein the respective other of the permanent magnet and multidirectional Hall sensor is adjustable along a first movement path, wherein the magnetic field changing means is adjustable along a second movement path in an intermediate space of the permanent magnet and multidirectional Hall sensor, wherein the plurality of changing elements defines at least two regions of different magnetic permeability in the intermediate space.Type: ApplicationFiled: December 21, 2023Publication date: June 27, 2024Inventors: Ralf Raupold, Florian Hölzle, Ralph Wassermann
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Patent number: 12000480Abstract: Disclosed is a locking unit having a piston and serving for locking the movement of the piston which can be acted on with pressure of a fluid. The locking unit can additionally have an electromagnet and at least one detent element. The detent element interacts with an armature or an armature rod of the electromagnet, and the piston has at least one detent receptacle, where the piston can be secured by the retaining interaction of the detent element with the detent receptacle. The piston is adjustable between a retracted position and an extended position. The piston is mounted at least partially in a middle piece which is surrounded at least partially by a housing, and the middle piece is configured in two parts from a metal part and a plastic part.Type: GrantFiled: May 5, 2023Date of Patent: June 4, 2024Assignee: SVM Schultz Verwaltungs-GmbH & Co. KGInventors: Ralph Wassermann, Florian Hölzle
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Publication number: 20230358310Abstract: Disclosed is a locking unit having a piston and serving for locking the movement of the piston which can be acted on with pressure of a fluid. The locking unit can additionally have an electromagnet and at least one detent element. The detent element interacts with an armature or an armature rod of the electromagnet, and the piston has at least one detent receptacle, where the piston can be secured by the retaining interaction of the detent element with the detent receptacle. The piston is adjustable between a retracted position and an extended position. The piston is mounted at least partially in a middle piece which is surrounded at least partially by a housing, and the middle piece is configured in two parts from a metal part and a plastic part.Type: ApplicationFiled: May 5, 2023Publication date: November 9, 2023Inventors: Ralph Wassermann, Florian Hölzle
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Publication number: 20230358312Abstract: A locking arrangement for an electric vehicle, that includes a locking unit, an electric motor, and an axle which is driveable by the electric motor. The locking unit can have a piston and serve for locking the movement of the piston which can be acted on with pressure of a fluid. The locking unit has an electromagnet and at least one detent element, and the detent element interacts with the armature or the armature rod of the electromagnet, and the piston has at least one detent receptacle, and the piston can be secured by the retaining interaction of the detent element with the detent receptacle. The piston can be adjustable between a retracted position and an extended position. The piston can act in at least one of the two positions on the axle in such a manner that the rotation of the axle is mechanically blocked.Type: ApplicationFiled: May 5, 2023Publication date: November 9, 2023Inventors: Ralph Wassermann, Florian Hölzle
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Publication number: 20230358311Abstract: A locking unit for locking the movement of a piston which can be acted on with pressure of a fluid, the locking unit having the piston, an electromagnet, and at least one detent element. The detent element interacts with an armature or an armature rod of the electromagnet. The piston has at least one detent receptacle, and the piston can be secured by a retaining interaction of the detent element with the detent receptacle. The piston is adjustable between a retracted position and an extended position, and the piston can be designed at least in sections as a hollow part.Type: ApplicationFiled: May 5, 2023Publication date: November 9, 2023Inventors: Ralph Wassermann, Florian Hölzle
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Publication number: 20230335323Abstract: An electromagnetic actuator for an assembly, in particular in a motor vehicle, may be mounted on a fluid chamber, which is designed to be connected to the actuator for fluid transfer when the actuator is installed in the assembly, which has a moving armature in an armature chamber, where the armature has a moving armature rod, where the actuator is designed to fill the armature chamber with fluid, in particular oil, in that the armature rod moves such that fluid is drawn into the armature chamber from the fluid chamber through a fluid path when the armature rod is connected to the fluid chamber for fluid transfer, and where a flow resistance in the fluid path between the armature chamber and the fluid chamber can be set to a first resistance level or a second resistance level.Type: ApplicationFiled: April 14, 2023Publication date: October 19, 2023Applicant: ZF Friedrichshafen AGInventors: Dominik Guldenschuh, Markus Moosmann, Markus Diesch, Florian Schreiber, Ralph Wassermann
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Patent number: 11731593Abstract: A locking unit for the parking brake of an automatic transmission, for locking the movement of a piston which can be moved by a drive, wherein a guiding element presses catch elements radially outward and a magnetic element for sensing the position of the guiding element is connected to the guiding element. A locking device for the parking brake of an automatic transmission, wherein a piston is locked with catch elements which are guided by a guiding element which in two end positions presses different catch elements radially outwardly in each case for locking.Type: GrantFiled: March 12, 2021Date of Patent: August 22, 2023Assignee: SVM Schultz Verwaltungs-GmbH & Co. KGInventors: Florian Hölzle, Ralph Wassermann, Wolfgang Schütz