Patents by Inventor Siegfried Hofler

Siegfried Hofler 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: 11117560
    Abstract: A membrane valve arrangement (1) includes a disc-shaped valve membrane (10) made from an elastic material and a disc (14) having a central opening (15). The valve membrane (10) is arranged with one side on the disc (14) and has a circumferential sealing bead (11) radially outside on the side opposite from the disc. The disc (14) is arranged, along with the valve membrane (10), between a housing upper part (2) and a housing lower part (6) of the membrane valve arrangement (1). The sealing bead (11) is clamped between the housing upper part (2) and the housing lower part (6). The sealing action in the region of the sealing bead is largely independent of tolerances because, on at least one of the housing parts in the region of the sealing bead (11) and/or in the radially outer peripheral region of the disc (14), additional sealing arrangements are present.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: September 14, 2021
    Assignee: WABCO Europe BVBA
    Inventors: Rafal Bialon, Siegfried Höfler, Andreas Teichmann, Ingo Torhoff
  • Publication number: 20190344765
    Abstract: A membrane valve arrangement (1) includes a disc-shaped valve membrane (10) made from an elastic material and a disc (14) having a central opening (15). The valve membrane (10) is arranged with one side on the disc (14) and has a circumferential sealing bead (11) radially outside on the side opposite from the disc. The disc (14) is arranged, along with the valve membrane (10), between a housing upper part (2) and a housing lower part (6) of the membrane valve arrangement (1). The sealing bead (11) is clamped between the housing upper part (2) and the housing lower part (6). The sealing action in the region of the sealing bead is largely independent of tolerances because, on at least one of the housing parts in the region of the sealing bead (11) and/or in the radially outer peripheral region of the disc (14), additional sealing arrangements are present.
    Type: Application
    Filed: July 17, 2017
    Publication date: November 14, 2019
    Inventors: Rafal Bialon, Siegfried Höfler, Andreas Teichmann, Ingo Torhoff
  • Publication number: 20180111438
    Abstract: Disclosed is a method for measuring height in a vehicle by determining a distance between a vehicle chassis and a vehicle axle or parts connected thereto. In the method, a first device (12) with a first transmitter (13) and a first receiver (14) and a second device (15) with a second transmitter (16) and a second receiver (17) interact. In particular, the first transmitter (13) produces an electromagnetic field, and the second receiver (17) detects the electromagnetic field. The second device (15) with the second transmitter (16) produces a signal from the detected field and transmits the signal, which correlates with the distance from the first transmitter (13) to the second receiver (17). The first device (12) with the first receiver (14) receives the signal. A system, an electronically controlled pneumatic suspension, an electronic control unit, and a vehicle are also disclosed.
    Type: Application
    Filed: February 6, 2016
    Publication date: April 26, 2018
    Inventors: Thomas BREHMER, Stefan GROETZINGER, Siegfried HÖFLER, Johann LUCAS, Joachim UHL
  • Patent number: 9827958
    Abstract: A sensor device for measuring the rotational speed at a wheel of a vehicle has a sensor carrier with an active sensor for actively sensing the rotation of a pole wheel rotating along with the wheel to measure rotational speed. The sensor carrier is constructed and arranged such that it can be clamped in the region of the wheel to permit the active sensor to be used without requiring complex adjustment operations.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 28, 2017
    Assignee: WABCO GmbH
    Inventors: Jurgen Dalisdas, Oliver Grundker, Siegfried Hofler
  • Publication number: 20150198623
    Abstract: A sensor device for measuring the rotational speed at a wheel of a vehicle has a sensor carrier with an active sensor for actively sensing the rotation of a pole wheel rotating along with the wheel to measure rotational speed. The sensor carrier is constructed and arranged such that it can be clamped in the region of the wheel to permit the active sensor to be used without requiring complex adjustment operations.
    Type: Application
    Filed: June 3, 2013
    Publication date: July 16, 2015
    Inventors: Jurgen Dalisdas, Oliver Grundker, Siegfried Hofler
  • Patent number: 8434520
    Abstract: A valve control unit, particularly for a pressure modulator of a commercial vehicle includes a valve control housing, solenoid valves, which are provided with solenoids and internal valve pieces inserted into the solenoids, and a pneumatic interface. The solenoids are accommodated inside the valve control housing. Pressure sensors for measuring pneumatic pressures are accommodated in or on the valve control unit, preferably on the top surface. Valve bores, into which the internal valve pieces are inserted, extend within the valve control housing. Air ducts extend between the pneumatic interface, the valve bores, and the pressure sensors, inside the valve control housing. The solenoids and pressure sensors are contacted with an electrical interface. The valve control housing can be a single piece.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: May 7, 2013
    Assignee: WABCO GmbH
    Inventors: Dieter Frank, Siegfried Höfler, Andreas Teichmann
  • Patent number: 8006549
    Abstract: A device which comprises a sensor and/or actuator and a connector for electrically and mechanically coupling the sensor and/or actuator. The connector comprises an individual electrical conductor having a core made from a first material and having a jacket made from a second material. The first material can have a lower thermal conductivity than the second material.
    Type: Grant
    Filed: November 10, 2007
    Date of Patent: August 30, 2011
    Assignee: WABCO GmbH
    Inventors: Siegfried Höfler, Günther Singbartl
  • Publication number: 20100064788
    Abstract: The invention relates to a device which comprises a sensor or actuator and coupling means for electrically and mechanically coupling the sensor or actuator. The coupling means comprise an electrical single conductor (30) having a core (31) from a first material and a jacket (32) from a second material, the first material having a lower thermal conductivity than the second material.
    Type: Application
    Filed: November 10, 2007
    Publication date: March 18, 2010
    Inventors: Siegfried Höfler, Günther Singbartl
  • Publication number: 20100038571
    Abstract: The invention relates to a valve control unit, particularly for a pressure modulator of a commercial vehicle. Said valve control unit (1) comprises a valve control housing (2), solenoid valves (4, 5, 6) which are provided with solenoids (16) and internal valve pieces (4a, 5a, 6a) inserted into the solenoids (16), and a pneumatic interface (14). The solenoids (16) are accommodated inside the valve control housing (2). Pressure sensors (10) for measuring pneumatic pressures are accommodated in or on the valve control unit, preferably on the top surface. Valve bores (3), into which the internal valve pieces (4a, 5a, 6a) are inserted, extend within the valve control housing (2). Air ducts (12) extend between the pneumatic interface (14), the valve bores (3), and the pressure sensors (10), inside the valve control housing (2). The solenoids (16) and pressure sensors (10) are contacted with an electrical interface (8). Advantageously, the valve control housing (2) is embodied as a single piece.
    Type: Application
    Filed: September 6, 2007
    Publication date: February 18, 2010
    Inventors: Dieter Frank, Siegfried Höfler, Andreas Teichmann
  • Publication number: 20090134864
    Abstract: The invention relates to an inductive sensor with an electrical coil assembly (1, 2,3) which has a coil body (2) and a wire wound coil (1), wherein at least one wire end (6, 7) is guided out of the wire wound coil (1) to electrical connection elements (17, 18) which connect the coil assembly (1, 2, 3) to the surrounding area, wherein the coil assembly (1, 2, 3) is at least partly extrusion-coated by an extrusion-coat mass (12) and is located in a pot-shaped housing (13). Therefore, an improved inductive sensor with regard to temperature change stability is specified. Said inductive sensor has at least one barrier (10, 11, 100) near the wire ends (6, 7) which are guided out of the wire wound coil (1) and is located between the wire ends (6, 7) which are guided out of the wire wound coil (1) and the injection point of the extrusion-coat mass (12) during the extrusion-coating.
    Type: Application
    Filed: April 28, 2007
    Publication date: May 28, 2009
    Inventors: Siegfried Hofler, Gunther Singbartl
  • Patent number: 7425149
    Abstract: A connection system that couples a contact of a flat block of components to an apparatus is provided. The connection system comprises a conductive connecting element electrically coupled to the contact of the flat block of components, and a clamping device electrically coupled to the apparatus. The clamping device receives the connecting element. The connecting element is a rigid conductor. The rigid conductor is a screw fastened conductively to the contact. The screw penetrates a bore in the flat block of components and is locked by a nut on a second side of the flat block of components, which is opposite a first side of the flat block of components.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: September 16, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Siegfried Hofler, Stefan Nowak, Wieland Portisch
  • Patent number: 7369023
    Abstract: A method for manufacturing magnet armatures which are used mainly in brake-pressure modulators of electronically controlled brake systems and which are provided on their entire surface with a plastic coating, for reasons of dimensional stability and sliding properties. Magnet armatures of this type are constructed as cylindrical members and are usually provided in the region of one of the two end faces with an elastomeric sealing element, which according to the prior art is bonded to the magnet armature by vulcanization, an adhesive elastomer-to-metal bond being formed between the magnet armature and the elastomeric sealing element during vulcanization. Since bonds of this type are not possible for a completely coated magnet armature, the elastomer for the elastomeric sealing element is, according to the invention, vulcanized onto the armature without using an adhesion promoter.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: May 6, 2008
    Assignee: WABCO GmbH & Co., OHG
    Inventors: Dieter Frank, Siegfried Höfler, Armin Sieker
  • Publication number: 20070267212
    Abstract: A method for operating a directory assistance system responsive to Voice over IP device requests includes the steps of receiving a directory assistance request from at least one Voice over IP device and identifying the requested information for delivery to the Voice over IP device. The requested information is formatted in accordance with a format required by the Voice over IP device and a notification message is transmitted to the Voice over IP device indicating that information relating to the directory assistance request is available. A request from a web server is received for retrieval of the requested information in response to the directory assistance request, where the web server is accessed by the Voice over IP device after receipt of the notification message. The requested information is transmitted to the Voice over IP device via the web server.
    Type: Application
    Filed: February 27, 2004
    Publication date: November 22, 2007
    Inventors: Otto Nachbauer, Johannes Horn, Dietmar Volkl, Thomas Keck, Oliver Grundker, Siegfried Hofler, Stefan Nieber, Ulrich Overhage
  • Publication number: 20070134992
    Abstract: A connection system that couples a contact of a flat block of components to an apparatus is provided. The connection system comprises a conductive connecting element electrically coupled to the contact of the flat block of components, and a clamping device electrically coupled to the apparatus. The clamping device receives the connecting element. The connecting element is a rigid conductor. The rigid conductor is a screw fastened conductively to the contact. The screw penetrates a bore in the flat block of components and is locked by a nut on a second side of the flat block of components, which is opposite a first side of the flat block of components.
    Type: Application
    Filed: December 29, 2004
    Publication date: June 14, 2007
    Inventors: Siegfried Hofler, Stefan Nowak, Wieland Portisch
  • Publication number: 20040129550
    Abstract: A pressure-tight contact device, especially for use in a pressure-tight encapsulated motor of a compressor. The contact device includes a connector shell, which can be pressed onto an insulator and is fastened to the pressure-tight housing enclosing the motor. The motor is connected by means of electrical connecting leads to at least one contact pin. The pin passes through the insulator and a punched opening of a contact tab for connection to a connecting cable. The individual parts of the contact device are sealed relative to one another by means of O-rings. The connector shell has a shroud member which can be formed in various configurations desired by the user for connection to various types of connecting cables.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 8, 2004
    Inventors: Marc Bodet, Klaus Egeter, Hartmut Geiger, Nico Herzberg, Siegfried Hofler
  • Publication number: 20020135451
    Abstract: A method for manufacturing magnet armatures which are used mainly in brake-pressure modulators of electronically controlled brake systems and which are provided on their entire surface with a plastic coating, for reasons of dimensional stability and sliding properties. Magnet armatures of this type are constructed as cylindrical members and are usually provided in the region of one of the two end faces with an elastomeric sealing element, which according to the prior art is bonded to the magnet armature by vulcanization, an adhesive elastomer-to-metal bond being formed between the magnet armature and the elastomeric sealing element during vulcanization. Since bonds of this type are not possible for a completely coated magnet armature, the elastomer for the elastomeric sealing element is, according to the invention, vulcanized onto the armature without using an adhesion promoter.
    Type: Application
    Filed: March 18, 2002
    Publication date: September 26, 2002
    Inventors: Dieter Frank, Siegfried Hofler, Armin Sieker
  • Patent number: 4930034
    Abstract: A protective circuit for a power pack for exciting or de-exciting a superconducting system has a voltage monitoring circuit at the output of the power pack. A switch in parallel to the output of the power pack is closed by the voltage monitoring circuit as soon as output voltage exceeds a predetermined value in a direction opposite a supply voltage of the power pack. During a malfunction, the switch closes and conducts the current which is being driven by the superconducting coil system. The protective circuit can be utilized in devices such as superconducting magnets of a tomography apparatus.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: May 29, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernd Kusserow, Klaus Gagneur, Siegfried Hofler
  • Patent number: 4903576
    Abstract: A solenoid-controlled valve arrangement is provided which includes a relay valve having in its control line a series arrangement of a shut-off valve and a shifting valve. Each of the shut-off valve and the shifting valve is solenoid-controlled.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: February 27, 1990
    Assignee: Wabco Westinghouse Fahrzeugbremsen GmbH
    Inventors: Siegfried Hofler, Johannes Moller, Erwin Petersen, Johann Rothen
  • Patent number: 4689990
    Abstract: The invention is an apparatus for the acquisition of speed of rotation and/or angle of rotation signals on a shaft, on which there is a pulse transmitter on the circumference of the joint and a sensor which measures the pulses produced by the pulse transmitter located on a pivot part, which defines a pivot axis, around which the shaft portions of a cardan shaft can be pivoted in relation to one another.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: September 1, 1987
    Assignee: WABCO Westinghouse Fahrzeugbremsen GmbH
    Inventors: Siegfried Hofler, Konrad Rode, Reinhard Schmidt