Patents by Inventor Stefan Drumm

Stefan Drumm 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: 10391994
    Abstract: A brake system for vehicles, comprising hydraulically actuatable wheel brakes, a first electrohydraulic brake control device, having an associated pressure-medium. The first brake control device comprises a first pressure-providing device for supplying the wheel brakes. An inlet valve and an outlet valve for setting wheel-specific brake pressures, and a wheel-specific output pressure connection connected to the pressure-medium reservoir by the outlet valves. A second electrohydraulic brake control device, comprises a second pressure-providing device with a first pump having a suction side and a pressure side for supplying a first wheel brake of the wheel brakes. The second brake control device is connected downstream of the first brake control device and the suction side of the first pump is connected to a first of the output pressure connections of the first brake control device. A check valve is connected in parallel with the outlet valve of the first output pressure connection.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: August 27, 2019
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Stefan Drumm, Paul Linhoff, Marco Besier
  • Patent number: 10363913
    Abstract: A method for operating a brake system of a motor vehicle, comprises a hydraulic operational brake device that has hydraulically-actuatable wheel brakes on at least one front axle of the motor vehicle, a parking brake device having wheel brakes on a rear axle of the motor vehicle, each of which can be actuated by means of an electromechanical actuator, and wheel speed sensors on the wheels of said front and rear axles. During braking by means of said hydraulic operational brake device while the vehicle is travelling, braking is carried out by said parking brake device.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: July 30, 2019
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Georg Roll, Stefan Drumm, Paul Linhoff
  • Patent number: 10358119
    Abstract: A brake system comprises a first electrohydraulic open-loop and closed-loop control unit. The first electrohydraulic control unit comprises a master brake cylinder actuatable by a brake pedal; a first electrically controllable pressure-providing device; and an electrically controllable pressure-modulating device sets wheel-specific brake pressures for the wheel brakes. The electrically controllable pressure-modulating device has at least one electrically actuatable inlet valve for each wheel brake. A first pressure-medium reservoir for supplying the first electrohydraulic control unit with pressure medium is arranged on the first electrohydraulic control unit. The brake system also comprises a second electrohydraulic open-loop and closed-loop control unit, which comprises a second electrically controllable pressure-providing device for actuating at least some of the wheel brakes and electrically actuatable valves.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 23, 2019
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm, Paul Linhoff
  • Patent number: 10351110
    Abstract: A brake system for motor vehicles controllable by a driver or independently of the driver, comprises first and second brake actuation sensors. First and second electrically controllable pressure sources, can actuate the wheel brakes. A first electronic control unit controls the first pressure source, and is connected to the first brake actuation sensor. A second electronic control unit controls the second pressure source and is connected to the second brake actuation sensor. A hydraulic control device comprises a first solenoid valve between the wheel brakes and the first pressure source and a second solenoid valve between the wheel brakes and the second pressure source. There is a data connection between the first electronic control unit and the second electronic control unit. The first electronic control unit has a first interface and the second electronic control unit has a second interface that are not connected to each other.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: July 16, 2019
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm
  • Publication number: 20190031165
    Abstract: A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit.
    Type: Application
    Filed: March 1, 2017
    Publication date: January 31, 2019
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco BESIER, Peter STAUDER, Johann JUNGBECKER, Stefan DRUMM, Georg ROLL, Jürgen BÖHM, Paul LINHOFF
  • Publication number: 20180312150
    Abstract: A modular braking device for a hydraulic motor vehicle brake system, which is optimized for remote actuation, including a hydraulic booster stage with a booster housing, a main brake cylinder mounted thereon, a booster piston which is displaceable therein and delimits a pressure chamber which is supplied directly with pressure medium by a motor pump unit.
    Type: Application
    Filed: November 18, 2016
    Publication date: November 1, 2018
    Inventors: Jose Gonzalez, Heinrich Kreh, Adrian Messner, Manfred Rüffer, Paul Wiebe, Falk Petzold, Michael Jürging, Ricardo Toquero, Lothar Schiel, Stefan Drumm
  • Patent number: 10059319
    Abstract: An actuating unit for a brake system, comprises a pedal connection element that charges a booster piston with an actuating force. An elastically deformable reaction disk, absorbs the actuating and boosting forces of the booster and releases the sum of said forces to a working piston. An electrically controllable pressure supply device outputs pressure which acts upon the booster piston. The actuating unit further comprises an extension arm for detecting the differential path between the pedal connection element and the booster piston and a sensor device that detects the differential path. An electronic control unit receives the signals from the sensor device and uses said signals for controlling the pressure supply device. Differential path information is transported by the extension arm to a location near the sensor device that is radially and axially offset by the reaction disk.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: August 28, 2018
    Assignee: Continental Teves AG & Co. oHG
    Inventor: Stefan Drumm
  • Publication number: 20170361816
    Abstract: A method for operating a brake system of a motor vehicle, comprises a hydraulic operational brake device that has hydraulically-actuatable wheel brakes on at least one front axle of the motor vehicle, a parking brake device having wheel brakes on a rear axle of the motor vehicle, each of which can be actuated by means of an electromechanical actuator, and wheel speed sensors on the wheels of said front and rear axles. During braking by means of said hydraulic operational brake device while the vehicle is travelling, braking is carried out by said parking brake device.
    Type: Application
    Filed: September 1, 2017
    Publication date: December 21, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Georg Roll, Stefan Drumm, Paul Linhoff
  • Publication number: 20170361825
    Abstract: A brake system for vehicles, comprising hydraulically actuatable wheel brakes, a first electrohydraulic brake control device, having an associated pressure-medium. The first brake control device comprises a first pressure-providing device for supplying the wheel brakes. An inlet valve and an outlet valve for setting wheel-specific brake pressures, and a wheel-specific output pressure connection connected to the pressure-medium reservoir by the outlet valves. A second electrohydraulic brake control device, comprises a second pressure-providing device with a first pump having a suction side and a pressure side for supplying a first wheel brake of the wheel brakes. The second brake control device is connected downstream of the first brake control device and the suction side of the first pump is connected to a first of the output pressure connections of the first brake control device. A check valve is connected in parallel with the outlet valve of the first output pressure connection.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Stefan Drumm, Paul Linhoff, Marco Besier
  • Patent number: 9802590
    Abstract: The invention relates to a brake system for motor vehicle. A piston-cylinder arrangement can be actuated by means of a brake pedal, a controllable pressure source and brake pressure modulation valves. In order to provide a piston-cylinder arrangement which is easy to implement and axially short, the invention proposes that the piston of the piston-cylinder arrangement is directly guided in a housing that accommodates further components of the brake system according to the invention.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: October 31, 2017
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventor: Stefan A. Drumm
  • Publication number: 20170282877
    Abstract: A brake system comprises a first electrohydraulic open-loop and closed-loop control unit. The first electrohydraulic control unit comprises a master brake cylinder actuatable by a brake pedal; a first electrically controllable pressure-providing device; and an electrically controllable pressure-modulating device sets wheel-specific brake pressures for the wheel brakes. The electrically controllable pressure-modulating device has at least one electrically actuatable inlet valve for each wheel brake. A first pressure-medium reservoir for supplying the first electrohydraulic control unit with pressure medium is arranged on the first electrohydraulic control unit. The brake system also comprises a second electrohydraulic open-loop and closed-loop control unit, which comprises a second electrically controllable pressure-providing device for actuating at least some of the wheel brakes and electrically actuatable valves.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm, Paul Linhoff
  • Publication number: 20170274884
    Abstract: A second electrohydraulic brake control device for a motor vehicle comprises a pressure control valve assembly, an controllable pressure source and a reservoir connection. For a group of wheel brakes, the second electrohydraulic brake control device is connected in series between the associated output pressure connections of a first or main brake control device and the vehicle wheel brakes.
    Type: Application
    Filed: June 13, 2017
    Publication date: September 28, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm, Paul Linhoff, Christian Courth
  • Patent number: 9663082
    Abstract: A brake system for motor vehicles, with a brake pedal for operating a master brake cylinder with a piston and pressure chamber connected to a wheel brake, a displacement sensor that detects the brake pedal displacement, a pedal force detection device that detects the brake pedal force, a brake pressure modulation unit applying pressure to the wheel brakes and regulating the wheel brakes individually. A cylinder-piston device for hydraulically producing a force that acts on the master cylinder piston in addition to the pedal force. A pressure supply device to supply pressure medium into the cylinder-piston arrangement. A hydraulic device supplying pressure medium into the brake circuit. A cylinder-piston arrangement upstream of the master brake cylinder generates a force acting on the master cylinder piston. An electronic control and regulation unit, executes an algorithm for the regulation of the brake system pressure.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: May 30, 2017
    Assignee: CONTINENTAL TEVES AG & CO. OHG
    Inventor: Stefan Drumm
  • Publication number: 20170129469
    Abstract: A hydraulic motor vehicle brake system arrangement includes an inlet pressure port, a tank port, an outlet pressure port, a normally open valve which can be controlled in an analog fashion and is arranged between the inlet pressure port and the outlet pressure port, and a pump with a suction side and a pressure side. The suction side of the pump is connectable to the inlet pressure port and to the tank port. A first check valve, which opens in the direction of the suction side, is arranged in the connection between the suction side and the tank port.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm, Johann Jungbecker, Paul Linhoff
  • Publication number: 20170129468
    Abstract: A braking system for a motor vehicle for actuating hydraulically actuatable wheel brakes comprises a first and a second electrically controllable pressure source for providing a brake pressure for actuating the wheel brakes. A first electric energy supply unit and a second electric energy supply unit that is independent of the first electric energy supply unit are provided. An electrically controllable pressure modulation device for setting brake pressures that are individual to each of the wheel brakes has at least one electrically actuatable inlet valve for each wheel brake. The first pressure source can be supplied with electric energy by the first energy supply unit, the second pressure source can be supplied with electric energy by the second energy supply unit, and the pressure modulation device can be supplied with electric energy by the first energy supply unit and by the second energy supply unit.
    Type: Application
    Filed: December 14, 2016
    Publication date: May 11, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm
  • Patent number: 9637102
    Abstract: A brake system includes a brake pedal for actuating a master cylinder having two pistons and corresponding pressure chambers, where the system can be operated in a brake-by-wire mode and also a fallback mode. The system also includes a first electrically controllable pressure source and a second electrically controllable pressure source. The first and second electrically controllable pressure sources each have corresponding output flows that are connected together. The second electrically controllable pressure source can therefore provide output volume flow in the event the first electrically controllable pressure source fails.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: May 2, 2017
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Stefan A. Drumm, Steffen Linkenbach
  • Publication number: 20170096130
    Abstract: The disclosure relates to an assembly for a hydraulic motor-vehicle brake system that includes a first port for connecting to a pressure chamber of a master brake cylinder and a second port for connecting to a pressure-medium reservoir. The assembly includes an output pressure port for connecting to a pressure modulation device and a pump assembly having at least a first suction side connected to the second port. In addition, the assembly includes a first hydraulic connection that connects the first port and the output pressure port. A first valve is arranged about the first hydraulic connection and is configured to be is open when current is not applied. The assembly includes a second hydraulic connection between the first port and the second port. A second valve is arranged about the second hydraulic connection, which is closed when current is not applied.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Stefan Drumm, Marco Besier
  • Publication number: 20170072920
    Abstract: A brake system for motor vehicles controllable by a driver or independently of the driver, comprises first and second brake actuation sensors. First and second electrically controllable pressure sources, can actuate the wheel brakes. A first electronic control unit controls the first pressure source, and is connected to the first brake actuation sensor. A second electronic control unit controls the second pressure source and is connected to the second brake actuation sensor. A hydraulic control device comprises a first solenoid valve between the wheel brakes and the first pressure source and a second solenoid valve between the wheel brakes and the second pressure source. There is a data connection between the first electronic control unit and the second electronic control unit. The first electronic control unit has a first interface and the second electronic control unit has a second interface that are not connected to each other.
    Type: Application
    Filed: November 15, 2016
    Publication date: March 16, 2017
    Applicant: Continental Teves AG & Co. oHG
    Inventors: Marco Besier, Stefan Drumm
  • Publication number: 20170043756
    Abstract: An actuating unit for a brake system, comprises a pedal connection element that charges a booster piston with an actuating force. An elastically deformable reaction disk, absorbs the actuating and boosting forces of the booster and releases the sum of said forces to a working piston. An electrically controllable pressure supply device outputs pressure which acts upon the booster piston. The actuating unit further comprises an extension arm for detecting the differential path between the pedal connection element and the booster piston and a sensor device that detects the differential path. An electronic control unit receives the signals from the sensor device and uses said signals for controlling the pressure supply device. Differential path information is transported by the extension arm to a location near the sensor device that is radially and axially offset by the reaction disk.
    Type: Application
    Filed: April 10, 2015
    Publication date: February 16, 2017
    Applicant: CONTINENTAL TEVES AG & CO. OHG
    Inventor: Stefan DRUMM
  • Patent number: 9415758
    Abstract: The invention relates to a method for providing haptic information to the driver of a motor vehicle, equipped with a brake-by-wire brake system, about the operating state of the brake system, in which method the brake pedal characteristic is generated by a pedal travel simulator, in the form of a functional relationship between the brake pedal opposing force and the brake pedal travel, and is modified as a function of an operating state. In order to provide the driver with the haptic information channel via which electronically controlled information can be communicated to the driver during braking, without the impression of a defect arising, the invention proposes that a basic brake pedal characteristic is generated by a passive simulator spring which assigns pedal travel, on which pedal return travel transporting the haptic information is superimposed, to a given pedal force in an unchanging, constant relationship.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: August 16, 2016
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Stefan Drumm, Steffen Linkenbach, Marco Besier, Jürgen Böhm, Georg Roll