Patents by Inventor Wolfram Maiwald
Wolfram Maiwald 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: 11781514Abstract: The present invention relates to an apparatus (1) for pressure control in a fuel feed of an internal combustion engine with a common rail injection, comprising a housing (10) with an opening (15), and an electromagnetic high pressure valve (30), wherein the electromagnetic high pressure valve (30) is at least partially inserted into the opening (15) of the housing (10) at the end, wherein the electromagnetic high pressure valve (30) is connected in a pressure-tight manner in the opening (15) to the housing (10) by a connection (20) and the connection (20) has a first portion (21) and at least one second portion (22), and wherein the first portion (21) and the at least one second portion (22) have different mechanical and/or geometric properties.Type: GrantFiled: September 8, 2020Date of Patent: October 10, 2023Assignee: KENDRION (VILLINGEN) GMBHInventors: Wolfram Maiwald, Ralf Heingl, Harald Burkart
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Publication number: 20220397085Abstract: The present invention relates to an apparatus (1) for pressure control in a fuel feed of an internal combustion engine with a common rail injection, comprising a housing (10) with an opening (15), and an electromagnetic high pressure valve (30), wherein the electromagnetic high pressure valve (30) is at least partially inserted into the opening (15) of the housing (10) at the end, wherein the electromagnetic high pressure valve (30) is connected in a pressure-tight manner in the opening (15) to the housing (10) by a connection (20) and the connection (20) has a first portion (21) and at least one second portion (22), and wherein the first portion (21) and the at least one second portion (22) have different mechanical and/or geometric properties.Type: ApplicationFiled: September 8, 2020Publication date: December 15, 2022Inventors: Wolfram MAIWALD, Ralf HEINGL, Harald BURKART
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Patent number: 10941678Abstract: An adjusting device having at least one tappet assembly. The at least one tappet assembly comprises a tappet, at least one guide cylinder, and a pole core. The tappet is arranged in the guide cylinder in a movable manner along a longitudinal axis, and a non-magnetic connection socket is arranged between the guide cylinder and the pole core. The guide cylinder and the pole core are arranged at a distance to each other in the longitudinal axis by the connection socket.Type: GrantFiled: August 14, 2018Date of Patent: March 9, 2021Assignee: Kendrion (Villingen) GmbHInventors: Tsuneo Suzuki, Wolfram Maiwald, Harald Burkart, Michael Tischtschenko, Andreas Kammerer
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Publication number: 20200308994Abstract: An adjusting device having at least one tappet assembly. The at least one tappet assembly comprises a tappet, at least one guide cylinder, and a pole core. The tappet is arranged in the guide cylinder in a movable manner along a longitudinal axis, and a non-magnetic connection socket is arranged between the guide cylinder and the pole core. The guide cylinder and the pole core are arranged at a distance to each other in the longitudinal axis by means of the connection socket.Type: ApplicationFiled: August 14, 2018Publication date: October 1, 2020Applicant: Kendrion (Villingen) GmbHInventors: Tsuneo Suzuki, Wolfram Maiwald, Harald Burkart, Michael Tischtschenko, Andreas Kammerer
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Patent number: 10781938Abstract: The application relates to a valve for a line system, comprising a valve body which forms a valve seat, a line system with a supply line for supplying a fluid to the valve seat and with a discharge line for discharging the fluid from the valve seat, which fluid is under a supply pressure in the supply line and under a working pressure in the discharge line, a closing element which interacts with the valve seat for opening and closing the line system, which closing element releases a throttle cross section between the valve seat and the closing element, a restoring element which applies a restoring force on the closing element, which restoring force presses the closing element against the valve seat in order to close the line system, and a pressure chamber in which the fluid is under a closing pressure to close the line system.Type: GrantFiled: June 1, 2017Date of Patent: September 22, 2020Assignee: Kendrion (Villingen) GmbHInventors: Martin Ohnmacht, Wolfram Maiwald, Wolfgang Burk, Stefan Barth
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Patent number: 10677372Abstract: An electromagnetic actuator of a valve device, in particular in a common rail system of a motor vehicle, comprising an armature for actuating a valve element located in a duct, said armature being arranged in a housing and being movable axially along a longitudinal axis of the actuator when an excitation coil is energized, further comprising a pole core, characterized in that the electromagnetic actuator is designed as an electromagnetic adhesive system that comprises a plate-type armature which entirely covers planar end faces of the pole core that extend orthogonally to the longitudinal axis.Type: GrantFiled: September 15, 2016Date of Patent: June 9, 2020Assignee: Kendrion (Villingen) GmbHInventors: Wolfram Maiwald, Tsuneo Suzuki, Ralf Heingl, Florian Schulz
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Patent number: 10428696Abstract: The invention is an actuator device comprising a first and a second tappet, wherein the first tappet is movably arranged in a first guide sleeve and the second tappet is movably arranged in a second guide sleeve, wherein the first tappet in the first guide sleeve is surrounded by a first restoring spring and the second tappet in the second guide sleeve is surrounded by a second restoring spring, and wherein the guide sleeves are arranged at a fixed distance from each other, wherein the first restoring spring is a coil spring wound in the left-hand direction and the second restoring spring is a coil spring wound in the right-hand direction.Type: GrantFiled: April 4, 2016Date of Patent: October 1, 2019Inventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald, Pedro Marull-Kessler, Michael Tischtschenko, Martin Schuetz
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Publication number: 20190170270Abstract: The application relates to a valve for a line system, comprising a valve body which forms a valve seat, a line system with a supply line for supplying a fluid to the valve seat and with a discharge line for discharging the fluid from the valve seat, which fluid is under a supply pressure in the supply line and under a working pressure in the discharge line, a closing element which interacts with the valve seat for opening and closing the line system, which closing element releases a throttle cross section between the valve seat and the closing element, a restoring element which applies a restoring force on the closing element, which restoring force presses the closing element against the valve seat in order to close the line system, and a pressure chamber in which the fluid is under a closing pressure to close the line system.Type: ApplicationFiled: June 1, 2017Publication date: June 6, 2019Applicant: Kendrion (Villingen) GmbHInventors: Martin Ohnmacht, Wolfram Maiwald, Wolfgang Burk, Stefan Barth
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Patent number: 10290410Abstract: A electromagnetic camshaft adjuster comprising: an armature unit which can be moved relative to a pole core when a stationary coil unit is energized and which has an armature plunger; and a permanent magnet unit by means of which the armature unit is held in a rest position when the coil unit is not energized; and a spring element between the pole core and the armature unit to force the armature unit axially away from the pole core, the spring force of the spring element being chosen smaller than the holding force of the permanent magnet unit when the coil unit is not energized. The permanent magnet unit is stationarily arranged between a housing cover and the pole core, the armature plunger is rotationally arranged, and the spring element is supported on a part of the armature unit which is rotationally fixedly mounted.Type: GrantFiled: June 30, 2015Date of Patent: May 14, 2019Assignee: Kendrion (Villingen) GmbHInventors: Dominik Halder, Pedro Marull-Kessler, Wolfram Maiwald, Tsuneo Suzuki, Harald Burkart
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Publication number: 20190138036Abstract: A valve for closing and opening a line system, comprising a valve body which forms a valve seat; a line system with a supply line for supplying a fluid to the valve seat and with a discharge line for discharging the fluid from the valve seat, wherein the fluid is under a supply pressure in the supply line and under a working pressure in the discharge line; a closing element that releases a throttle cross-section between the valve seat and the closing element; a restoring element which applies a restoring force to the closing element; and a pressure chamber in which the fluid is under a closing pressure with which the fluid applies a closing force to the closing element to close the line system.Type: ApplicationFiled: April 7, 2017Publication date: May 9, 2019Applicant: Kendrion (Villingen) GmbHInventors: Martin Ohnmacht, Wolfram Maiwald, Wolfgang Bürk, Stefan Barth
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Patent number: 10247054Abstract: An electromagnetic adjusting device having a first, second and third plug contacts for operating the adjusting device on an operating voltage source having a first and second voltage pole. The device can include an actuator coupled to the plug contacts. The actuator can have a magnet coil with a first terminal connected to the first plug contact, a second terminal connected to the second plug contact, where either the first or the second plug contact is connected to the first voltage pole. The magnet coil can also have a first transistor with a first control electrode connecting the first terminal to the third plug contact, a second transistor having a second control electrode connecting the second terminal to the third plug contact, a first resistor connecting the first control electrode to the second plug contact and a second resistor connecting the second control electrode to the first plug contact.Type: GrantFiled: October 1, 2015Date of Patent: April 2, 2019Assignee: Kendrion (Villingen) GmbHInventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald
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Publication number: 20180283573Abstract: An electromagnetic actuator of a valve device, in particular in a common rail system of a motor vehicle, comprising an armature for actuating a valve element located in a duct, said armature being arranged in a housing and being movable axially along a longitudinal axis of the actuator when an excitation coil is energized, further comprising a pole core, characterized in that the electromagnetic actuator is designed as an electromagnetic adhesive system that comprises a plate-type armature which entirely covers planar end faces of the pole core that extend orthogonally to the longitudinal axis.Type: ApplicationFiled: September 15, 2016Publication date: October 4, 2018Applicant: Kendrion (Villingen) GmbHInventors: Wolfram Maiwald, Tsuneo Suzuki, Ralf Heingl, Florian Schulz
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Publication number: 20180144855Abstract: A electromagnetic camshaft adjuster comprising: an armature unit which can be moved relative to a pole core when a stationary coil unit is energized and which has an armature plunger; and a permanent magnet unit by means of which the armature unit is held in a rest position when the coil unit is not energized; and a spring element between the pole core and the armature unit to force the armature unit axially away from the pole core, the spring force of the spring element being chosen smaller than the holding force of the permanent magnet unit when the coil unit is not energized. The permanent magnet unit is stationarily arranged between a housing cover and the pole core, the armature plunger is rotationally arranged, and the spring element is supported on a part of the armature unit which is rotationally fixedly mounted.Type: ApplicationFiled: June 30, 2015Publication date: May 24, 2018Applicant: Kendrion (Villingen) GmbHInventors: Dominik Halder, Pedro Marull-Kessler, Wolfram Maiwald, Tsuneo Suzuki, Harald Burkart
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Publication number: 20180112789Abstract: The invention is a volume control valve for controlling and metering a fluid in a motor vehicle, comprising a tappet with an actuating end and a free end, said tappet being received in a bearing bush and mounted along its actuating axis so as to be movable back and forth, and a seat valve which is connected to a fluid channel and arranged relative to the tappet in such a way that the free end of the tappet can engage in the valve seat and close the fluid channel when it is engaged in said valve seat, and further comprising a pressure spring which is arranged along the longitudinal axis of the tappet. According to the invention, a welded plate is fastened and/or welded and/or formed on the tappet with the pressure spring arranged thereon, which is supported on the welded plate and the bearing bush.Type: ApplicationFiled: June 8, 2016Publication date: April 26, 2018Inventors: Wolfram Maiwald, Stefan Barth, Florian Schulz
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Publication number: 20180016949Abstract: The invention is an actuator device comprising a first and a second tappet, wherein the first tappet is movably arranged in a first guide sleeve and the second tappet is movably arranged in a second guide sleeve, wherein the first tappet in the first guide sleeve is surrounded by a first restoring spring and the second tappet in the second guide sleeve is surrounded by a second restoring spring, and wherein the guide sleeves are arranged at a fixed distance from each other, wherein the first restoring spring is a coil spring wound in the left-hand direction and the second restoring spring is a coil spring wound in the right-hand direction.Type: ApplicationFiled: April 4, 2016Publication date: January 18, 2018Inventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald, Pedro Marull-Kessler, Michael Tischtschenko, Martin Schuetz
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Publication number: 20170241301Abstract: An electromagnetic adjusting device having a first, second and third plug contacts for operating the adjusting device on an operating voltage source having a first and second voltage pole. The device can include an actuator coupled to the plug contacts. The actuator can have a magnet coil with a first terminal connected to the first plug contact, a second terminal connected to the second plug contact, where either the first or the second plug contact is connected to the first voltage pole. The magnet coil can also have a first transistor with a first control electrode connecting the first terminal to the third plug contact, a second transistor having a second control electrode connecting the second terminal to the third plug contact, a first resistor connecting the first control electrode to the second plug contact and a second resistor connecting the second control electrode to the first plug contact.Type: ApplicationFiled: October 1, 2015Publication date: August 24, 2017Applicant: Kendrion (Villingen) GmbHInventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald
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Patent number: 9523437Abstract: The invention is an electromagnetic actuator with a magnet coil arranged in a housing and with an armature plate, which is movable by energization of the magnet coil in an armature plate space in the direction of a front end of the housing and which is connected to an armature plunger, which at one end is guided through the housing and protrudes into a control space; according to the invention the armature plate is formed with at least one axial pressure compensation bore so as to produce pressure compensation between the armature plate space and the control space, and the housing has at least one bearing with at least one axial groove, in which the armature plunger is mounted movably.Type: GrantFiled: March 8, 2012Date of Patent: December 20, 2016Assignee: KENDRION (Villingen) GmbHInventors: Ronald Pott, Gerhardt Ohlendorf, Stefan Solterbeck, Hergen Ruetemann, Armin Beck, Wolfram Maiwald, Gerhard Theissl, Emil Lambauerl
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Patent number: 9297345Abstract: A high pressure control valve system with a valve body with an inlet and an outlet, whereby the outlet is shaped by at least one radially oriented opening in the valve body, an essentially discoidally shaped valve seat arranged on the valve body between inlet and outlet and features a valve body bore that connects inlet and outlet, a sealing element that is appropriately arranged on an actuating element in order to close the valve bore, and an actuating device suitably shaped to move the actuating element in such a way as to cause the opening and closing of the valve, characterized in that the valve seat on the exit site features a revolving extension, extending from a foot print axially in direction of the opening.Type: GrantFiled: October 18, 2011Date of Patent: March 29, 2016Assignee: KENDRION BINDER MAGNETE GMBHInventors: Harald Burkart, Wolfram Maiwald, Wei Yu, Frank Zelano, Ralf Heingl, Stefanie Gerhardt
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Publication number: 20140166914Abstract: The invention relates to an electromagnetic actuator with a magnet coil arranged in a housing and with an armature plate, which is movable by energization of the magnet coil in an armature plate space in the direction of a front end of the housing and which is connected to an armature plunger, which at one end is guided through the housing and protrudes into a control space; according to the invention the armature plate is formed with at least one axial pressure compensation bore so as to produce pressure compensation between the armature plate space and the control space, and the housing has at least one bearing with at least one axial groove, in which the armature plunger is mounted movably.Type: ApplicationFiled: March 8, 2012Publication date: June 19, 2014Applicants: VOLKWAGEN AG, KENDRION (Villingen) GmbHInventors: Ronald Pott, Gerhardt Ohlendorf, Stefan Solterbeck, Hergen Ruetemann, Armin Beck, Wolfram Maiwald, Gerhard Theissl, Emil Lambauerl
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Publication number: 20120266977Abstract: A high pressure control valve system with a valve body with an inlet and an outlet, whereby the outlet is shaped by at least one radially oriented opening in the valve body, an essentially discoidally shaped valve seat arranged on the valve body between inlet and outlet and features a valve body bore that connects inlet and outlet, a sealing element that is appropriately arranged on an actuating element in order to close the valve bore, and an actuating device suitably shaped to move the actuating element in such a way as to cause the opening and closing of the valve, characterized in that the valve seat on the exit site features a revolving extension, extending from a foot print axially in direction of the opening.Type: ApplicationFiled: October 18, 2011Publication date: October 25, 2012Inventors: HARALD BURKART, Wolfram Maiwald, Wei Yu, Frank Zelano, Ralf Heingl, Stefanie Gerhardt