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).

  • Patent number: 11781514
    Abstract: 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: Grant
    Filed: September 8, 2020
    Date of Patent: October 10, 2023
    Assignee: KENDRION (VILLINGEN) GMBH
    Inventors: Wolfram Maiwald, Ralf Heingl, Harald Burkart
  • Publication number: 20220397085
    Abstract: 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: Application
    Filed: September 8, 2020
    Publication date: December 15, 2022
    Inventors: Wolfram MAIWALD, Ralf HEINGL, Harald BURKART
  • Patent number: 10941678
    Abstract: 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: Grant
    Filed: August 14, 2018
    Date of Patent: March 9, 2021
    Assignee: Kendrion (Villingen) GmbH
    Inventors: Tsuneo Suzuki, Wolfram Maiwald, Harald Burkart, Michael Tischtschenko, Andreas Kammerer
  • Publication number: 20200308994
    Abstract: 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: Application
    Filed: August 14, 2018
    Publication date: October 1, 2020
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Tsuneo Suzuki, Wolfram Maiwald, Harald Burkart, Michael Tischtschenko, Andreas Kammerer
  • Patent number: 10781938
    Abstract: 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: Grant
    Filed: June 1, 2017
    Date of Patent: September 22, 2020
    Assignee: Kendrion (Villingen) GmbH
    Inventors: Martin Ohnmacht, Wolfram Maiwald, Wolfgang Burk, Stefan Barth
  • Patent number: 10677372
    Abstract: 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: Grant
    Filed: September 15, 2016
    Date of Patent: June 9, 2020
    Assignee: Kendrion (Villingen) GmbH
    Inventors: Wolfram Maiwald, Tsuneo Suzuki, Ralf Heingl, Florian Schulz
  • Patent number: 10428696
    Abstract: 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: Grant
    Filed: April 4, 2016
    Date of Patent: October 1, 2019
    Inventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald, Pedro Marull-Kessler, Michael Tischtschenko, Martin Schuetz
  • Publication number: 20190170270
    Abstract: 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: Application
    Filed: June 1, 2017
    Publication date: June 6, 2019
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Martin Ohnmacht, Wolfram Maiwald, Wolfgang Burk, Stefan Barth
  • Patent number: 10290410
    Abstract: 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: Grant
    Filed: June 30, 2015
    Date of Patent: May 14, 2019
    Assignee: Kendrion (Villingen) GmbH
    Inventors: Dominik Halder, Pedro Marull-Kessler, Wolfram Maiwald, Tsuneo Suzuki, Harald Burkart
  • Publication number: 20190138036
    Abstract: 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: Application
    Filed: April 7, 2017
    Publication date: May 9, 2019
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Martin Ohnmacht, Wolfram Maiwald, Wolfgang Bürk, Stefan Barth
  • Patent number: 10247054
    Abstract: 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: Grant
    Filed: October 1, 2015
    Date of Patent: April 2, 2019
    Assignee: Kendrion (Villingen) GmbH
    Inventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald
  • Publication number: 20180283573
    Abstract: 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: Application
    Filed: September 15, 2016
    Publication date: October 4, 2018
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Wolfram Maiwald, Tsuneo Suzuki, Ralf Heingl, Florian Schulz
  • Publication number: 20180144855
    Abstract: 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: Application
    Filed: June 30, 2015
    Publication date: May 24, 2018
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Dominik Halder, Pedro Marull-Kessler, Wolfram Maiwald, Tsuneo Suzuki, Harald Burkart
  • Publication number: 20180112789
    Abstract: 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: Application
    Filed: June 8, 2016
    Publication date: April 26, 2018
    Inventors: Wolfram Maiwald, Stefan Barth, Florian Schulz
  • Publication number: 20180016949
    Abstract: 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: Application
    Filed: April 4, 2016
    Publication date: January 18, 2018
    Inventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald, Pedro Marull-Kessler, Michael Tischtschenko, Martin Schuetz
  • Publication number: 20170241301
    Abstract: 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: Application
    Filed: October 1, 2015
    Publication date: August 24, 2017
    Applicant: Kendrion (Villingen) GmbH
    Inventors: Tsuneo Suzuki, Harald Burkart, Wolfram Maiwald
  • Patent number: 9523437
    Abstract: 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: Grant
    Filed: March 8, 2012
    Date of Patent: December 20, 2016
    Assignee: KENDRION (Villingen) GmbH
    Inventors: Ronald Pott, Gerhardt Ohlendorf, Stefan Solterbeck, Hergen Ruetemann, Armin Beck, Wolfram Maiwald, Gerhard Theissl, Emil Lambauerl
  • Patent number: 9297345
    Abstract: 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: Grant
    Filed: October 18, 2011
    Date of Patent: March 29, 2016
    Assignee: KENDRION BINDER MAGNETE GMBH
    Inventors: Harald Burkart, Wolfram Maiwald, Wei Yu, Frank Zelano, Ralf Heingl, Stefanie Gerhardt
  • Publication number: 20140166914
    Abstract: 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: Application
    Filed: March 8, 2012
    Publication date: June 19, 2014
    Applicants: VOLKWAGEN AG, KENDRION (Villingen) GmbH
    Inventors: Ronald Pott, Gerhardt Ohlendorf, Stefan Solterbeck, Hergen Ruetemann, Armin Beck, Wolfram Maiwald, Gerhard Theissl, Emil Lambauerl
  • Publication number: 20120266977
    Abstract: 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: Application
    Filed: October 18, 2011
    Publication date: October 25, 2012
    Inventors: HARALD BURKART, Wolfram Maiwald, Wei Yu, Frank Zelano, Ralf Heingl, Stefanie Gerhardt