Patents by Inventor Michael Hägele
Michael Hägele 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: 20240318337Abstract: A method of operating an electrolyzer including one or more cells stacked within a cell stack, whereby during operation of the electrolyzer, the temperature in one or more locations in the cell stack is indirectly or directly measured, in particular directly by one or more sensors having their sensitive element inserted inside the cell stack.Type: ApplicationFiled: February 2, 2022Publication date: September 26, 2024Inventors: Michael DOLL, Alfred HERING, Christian HAEGELE
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Patent number: 11548549Abstract: A steering system for a trailing axle of a motor vehicle includes an electric motor, a hydraulic pump, a first valve, and a working cylinder. The electric motor is configured to drive the hydraulic pump. The working cylinder has a central bore and a piston positioned in the working cylinder. The first valve is fluidically connected to the pump such that the first valve is configured to block flow between the central bore and the pump in response to pressure generated by the pump, and to release the flow in response to a non-pressurized state of the pump in order to divert hydraulic fluid from the working cylinder through the central bore via an adhesion-driven movement of the piston into a central position in the central bore. A method includes operating a steering system for a trailing axle of a motor vehicle of this type.Type: GrantFiled: October 4, 2016Date of Patent: January 10, 2023Assignee: Robert Bosch Automotive Steering GmbHInventors: Falk Hofmann, Michael Haegele, Kai Eckmann
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Publication number: 20210197891Abstract: A steering system for a trailing axle of a motor vehicle includes an electric motor, a hydraulic pump, a first valve, and a working cylinder. The electric motor is configured to drive the hydraulic pump. The working cylinder has a central bore and a piston positioned in the working cylinder. The first valve is fluidically connected to the pump such that the first valve is configured to block flow between the central bore and the pump in response to pressure generated by the pump, and to release the flow in response to a non-pressurized state of the pump in order to divert hydraulic fluid from the working cylinder through the central bore via an adhesion-driven movement of the piston into a central position in the central bore. A method includes operating a steering system for a trailing axle of a motor vehicle of this type.Type: ApplicationFiled: October 4, 2016Publication date: July 1, 2021Applicant: Robert Bosch Automotive Steering GmbHInventors: Falk HOFMANN, Michael HAEGELE, Kai ECKMANN
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Patent number: 10370027Abstract: This invention is a steering system for a trailing or leading axle of a vehicle including a steering angle sensor, a driving speed sensor, an electric motor that drives a hydraulic pump, a working cylinder for steering wheels of the axle, which is joined to the hydraulic pump, a control device which determines a trailing angle of the wheels and which controls the electric motor, wherein the working cylinder has a center position borehole via which hydraulic fluid is emitted, and a piston seals the center position borehole in the straight position of the wheels, wherein the working cylinder is connected to return valves, via which hydraulic fluid can flow back into a tank, wherein the center position borehole is connected to a center position valve, via which hydraulic fluid can flow back into a tank, and wherein the return valves and the center position valve are poppet valves.Type: GrantFiled: August 26, 2015Date of Patent: August 6, 2019Assignee: Robert Bosch Automotive Steering GmbHInventors: Kai Eckmann, Stefan Häussler, Falk Hofmann, Michael Hägele
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Publication number: 20170327147Abstract: A steering system for a trailing or leading axle of a vehicle includes a steering angle sensor for measuring a steering angle of wheels of a front axle of the vehicle, a driving speed sensor for measuring a driving speed of the vehicle, an electric motor that drives a hydraulic pump, and a working cylinder connected to the hydraulic pump for steering the wheels of the trailing axle. The system also includes a control device that determines a trailing angle of wheels on the trailing axle of the vehicle and actuates the electric motor in a corresponding manner. The working cylinder has a center position borehole via which hydraulic fluid is released from the working cylinder. A piston closes the center position borehole in the straight-ahead position of the wheels of the trailing axle. The center position borehole can only be closed by a piston seal of the piston.Type: ApplicationFiled: October 28, 2015Publication date: November 16, 2017Inventors: Falk Hofmann, Michael Haegele
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Patent number: 9731753Abstract: A steering gear component for a vehicle, comprising: a worm, which is mounted so as to be rotatably and axially non-displace able, wherein the worm has a ball screw for receiving a row of balls, and a ball nut, which is drivingly connected to the worm by way of the row of balls, and wherein the ball nut acts as a piston of a cylinder for steering force assistance, wherein a signal transmitter for a sensing element is arranged on the steering spindle and the sensing element is arranged on the worm, or wherein the sensing element is arranged on the steering spindle and the signal transmitter for the sensing element is arranged on the worm.Type: GrantFiled: October 22, 2013Date of Patent: August 15, 2017Assignee: ROBERT BOSCH AUTOMOTIVE STEERING GMBHInventors: Michael Haegele, Helmut Bareis, Daniel Forster
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Publication number: 20170217482Abstract: The invention relates to a steering system for at least one trailing or leading axle of a vehicle, comprising: a steering angle sensor for measuring a steering angle of wheels of a leading axle of the vehicle; a driving speed sensor for measuring a driving speed of the vehicle; an electric motor (1.2) that drives a hydraulic pump (2); a working cylinder (11) for steering the wheels of the trailing axle, which is joined to the hydraulic pump (2); a control device (1.1) which determines a trailing angle of wheels on the trailing axle of the vehicle, using the data of the steering angle sensor and the driving speed sensor, and which controls the electric motor in a corresponding manner, wherein the working cylinder (11) has a centre position borehole (1.3) via which hydraulic fluid can be emitted from the working cylinder (11), and a piston seals the centre position borehole (11.Type: ApplicationFiled: August 26, 2015Publication date: August 3, 2017Inventors: Kai Eckmann, Stefan Häussler, Falk Hofmann, Michael Hägele
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Publication number: 20150291209Abstract: A steering gear component for a vehicle, comprising: a worm, which is mounted so as to be rotatably and axially non-displace able, wherein the worm has a ball screw for receiving a row of balls, and a ball nut, which is drivingly connected to the worm by way of the row of balls, and wherein the ball nut acts as a piston of a cylinder for steering force assistance, wherein a signal transmitter for a sensing element is arranged on the steering spindle and the sensing element is arranged on the worm, or wherein the sensing element is arranged on the steering spindle and the signal transmitter for the sensing element is arranged on the worm.Type: ApplicationFiled: October 22, 2013Publication date: October 15, 2015Inventors: Michael Haegele, Helmut Bareis, Daniel Forster
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Patent number: 7984669Abstract: A power steering device for a vehicle which is disposed in the transmission path between a steering handle and a steerable vehicle wheel, comprises a servo cylinder having two pressure chambers, which are separated by a working piston and are each connected to a pressure supply unit. A valve plunger, which seals a bypass channel between the pressure chambers, is movably disposed on the working piston. Furthermore, an adjustment bushing comprising an adjustment section is disposed in the servo cylinder, the valve plunger being moved against this section upon approaching an axial limit position, thereby opening the bypass channel. The adjustment bushing is clamped into the servo cylinder, yet held displaceably, wherein, on the adjustment bushing, a sealing section is provided, which is to be moved into a sealing position with the working piston so as to interrupt the flow connection between the pressure chambers.Type: GrantFiled: October 27, 2009Date of Patent: July 26, 2011Assignee: ZF Lenksysteme GmbHInventors: Joachim Linde, Michael Haegele
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Patent number: 7942230Abstract: A hydraulic power steering system for a vehicle, e.g., an electrohydraulic power steering system for a motor vehicle, includes a servo valve, the relative movement of whose control parts actuates a piston rod of a servo cylinder and changes at least one steering angle of a wheel which is operatively connected to the piston rod, and additionally has an electric servo motor which drives a rack with the servo cylinder for adjusting the steering angle of the wheel in the same direction. In order to provide an electrohydraulic power steering system which is as compactly arranged as possible in the region of its actuator and may be used flexibly for different classes of vehicle, the action of the rack and the piston rod of the servo cylinder is combined, in a parallel arrangement with one another, on an addition member for jointly adjusting the steering angle of the wheel.Type: GrantFiled: February 10, 2005Date of Patent: May 17, 2011Assignee: ZF Lenksysteme GmbHInventors: Walter Kogel, Michael Haegele, Manfred Heintschel
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Publication number: 20100116125Abstract: A power steering device for a vehicle which is disposed in the transmission path between a steering handle and a steerable vehicle wheel, comprises a servo cylinder having two pressure chambers, which are separated by a working piston and are each connected to a pressure supply unit. A valve plunger, which seals a bypass channel between the pressure chambers, is movably disposed on the working piston. Furthermore, an adjustment bushing comprising an adjustment section is disposed in the servo cylinder, the valve plunger being moved against this section upon approaching an axial limit position, thereby opening the bypass channel. The adjustment bushing is clamped into the servo cylinder, yet held displaceably, wherein, on the adjustment bushing, a sealing section is provided, which is to be moved into a sealing position with the working piston so as to interrupt the flow connection between the pressure chambers.Type: ApplicationFiled: October 27, 2009Publication date: May 13, 2010Applicant: ZF Lenksysteme GmbHInventors: Joachim Linde, Michael Haegele
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Publication number: 20080257634Abstract: The invention relates to a hydraulic power steering system (1) for a vehicle, in particular an electrohydraulic power steering system for a motor vehicle, having a servo valve (2), the relative movement of whose control parts actuates a piston rod (3) of a servo cylinder (4) and changes at least one steering angle (?) of a wheel (5) which is operatively connected to the piston rod (3). The power steering system (1) additionally has an electric servo motor (6) which drives a rack (7) with the servo cylinder (4) for the purpose of adjusting the steering angle of the wheel (5) in the same direction.Type: ApplicationFiled: February 10, 2005Publication date: October 23, 2008Inventors: Walter Kogel, Michael Haegele, Manfred Heintschel
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Publication number: 20060170415Abstract: A device is for measuring an angular movement in a vehicle steering system. A shaft, whose angular movement is to be measured, is rotationally mounted in a frame. Positioned on the shaft is an axially displaceable element, which is connected to the shaft via a geared connection that converts the angular movement of the shaft into a longitudinal movement. The geared connection may be a screw thread or a screw-like, sliding-block guide or a recirculating ball screw, etc. The axially displaceable element is axially guided with the aid of a longitudinal guide prestressed in the radial direction and, in particular, by a frame-side component of the longitudinal guide. A detection device made up of a transducer on the axially displaceable element and a sensor on the frame detects the longitudinal movement of the axially displaceable element.Type: ApplicationFiled: June 18, 2004Publication date: August 3, 2006Inventors: Martin Budaker, Michael Haegele, Markus Heger, Michael Ochs