Patents by Inventor Dietmar Baumann

Dietmar Baumann 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: 11958000
    Abstract: A filter element has a first follower element with a first traction surface and a second follower element with a second traction surface provided for interacting with first and second mating surfaces of the filter housing, respectively. The first and second traction surfaces interact with the first and second mating surfaces to pull out the filter element from the filter housing. The first and second traction surfaces are spaced apart from each other along a longitudinal axis of the filter element and project radially into the interior of the filter element. At least one of the first and second follower elements has a stop surface adjoining circumferentially the respective traction surface. In a position of use, the stop surface interacts with a counter stop surface of the filter housing to form an at least unidirectional rotational degree of freedom blocking about the longitudinal axis relative to the filter housing.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: April 16, 2024
    Assignee: MANN+HUMMEL GmbH
    Inventors: Christoph Baumann, Oliver Glueck, Guenter Jokschas, Idriss Razgani, Dietmar Talmon-Gros, Martin Weindorf
  • Patent number: 10202109
    Abstract: A brake system includes a brake activation element, an activation-element-coupling device having a first piston which is moved into a first internal chamber of the activation-element-coupling device by activating the brake activation element, a master brake cylinder with a second piston to which a driver braking force is transmitted in a driver braking mode to move the second piston into a second internal chamber of the master brake cylinder, a braking medium reservoir, which is hydraulically disconnected from the second internal chamber when the second piston moves a minimum travel distance, and at least a first wheel brake cylinder and at least a first pump. In an external force braking mode, movement of the second piston is prohibited despite the driver's braking force, and the at least one first pump pumps a braking medium volume out of the braking medium reservoir into the at least one first wheel brake cylinder.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: February 12, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Baumann
  • Patent number: 9216723
    Abstract: A method for controlling the wheel brake pressures in wheel brake cylinders in a hydraulic vehicle braking system proposes to connect the wheel brake cylinders via wheel valves to a piston pump, the pistons of which are double-action pistons, and the two piston sides are connectable by means of pump valves. In order to increase the wheel brake pressure, the wheel valves are opened during a delivery stroke of the piston pump and the pump valves are closed, and the wheel valves are closed and the pump valves opened during a suction stroke. In order to reduce the wheel brake pressures, the valves are controlled in reverse.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: December 22, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Baumann
  • Patent number: 8827053
    Abstract: The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geometrical centroid of an imaginary surface defined by the roller elements. As a result a load is distributed to the roller elements in a more uniform fashion and the pressing force of the friction brake pad against a brake disc when the partial lining disc brake is actuated is distributed more uniformly and counteracts irregular pad wear.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: September 9, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
  • Publication number: 20140001821
    Abstract: A brake system includes a brake activation element, an activation-element-coupling device having a first piston which is moved into a first internal chamber of the activation-element-coupling device by activating the brake activation element, a master brake cylinder with a second piston to which a driver braking force is transmitted in a driver braking mode to move the second piston into a second internal chamber of the master brake cylinder, a braking medium reservoir, which is hydraulically disconnected from the second internal chamber when the second piston moves a minimum travel distance, and at least a first wheel brake cylinder and at least a first pump. In an external force braking mode, movement of the second piston is prohibited despite the driver's braking force, and the at least one first pump pumps a braking medium volume out of the braking medium reservoir into the at least one first wheel brake cylinder.
    Type: Application
    Filed: November 23, 2011
    Publication date: January 2, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Dietmar Baumann
  • Publication number: 20130341132
    Abstract: The disclosure relates to a friction brake in the design of a disc brake as a vehicle brake having a piezo element as an actuating device and a piezo element as a force-voltage converter on which a movable friction brake pad is supported against turning with a brake disc and thus generates a voltage on the piezo element which an electronic control unit couples into the piezo element of the actuating device, causing the friction brake to have a self-amplification.
    Type: Application
    Filed: December 13, 2011
    Publication date: December 26, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Dietmar Baumann
  • Publication number: 20130342005
    Abstract: A method for controlling the wheel brake pressures in wheel brake cylinders in a hydraulic vehicle braking system proposes to connect the wheel brake cylinders via wheel valves to a piston pump, the pistons of which are double-action pistons, and the two piston sides are connectable by means of pump valves. In order to increase the wheel brake pressure, the wheel valves are opened during a delivery stroke of the piston pump and the pump valves are closed, and the wheel valves are closed and the pump valves opened during a suction stroke. In order to reduce the wheel brake pressures, the valves are controlled in reverse.
    Type: Application
    Filed: October 25, 2011
    Publication date: December 26, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventor: Dietmar Baumann
  • Patent number: 8448755
    Abstract: The invention relates to a disk brake with an electromechanical actuator which, for example, has a piezo-element, and with a hydraulic self-energizing device. In order to control the self-energizing effect, the invention provides a valve hydraulically between an auxiliary piston of the self-energizing device and a brake piston of the disk brake with which the brake piston can be hydraulically isolated from the auxiliary piston. This means that the self-energizing effect of the disk brake can be switched off. Using a modulated valve control and/or use of a proportional valve, the level of the self-energizing effect can be controlled or regulated. In order to avoid a blockage, the invention additionally provides a blockage protection valve with which the auxiliary piston or the brake piston can be connected to a hydraulic accumulator at ambient pressure.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: May 28, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann
  • Patent number: 8439170
    Abstract: The invention relates to a self-reinforcing electromechanical disc brake having a brake caliper produced by means of shaping, in one piece with a housing for electromechanical parts of an actuating device of the disc brake, with the housing forming a dimensionally stable hollow body. It is possible in this way to produce a bending-resistant and torsionally rigid brake caliper with a low wall thickness.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 14, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
  • Patent number: 8091690
    Abstract: The invention relates to a self-reinforcing, in particular electromechanical disk brake having a wedge mechanism as the self-boosting device, for example. The invention proposes that the actuating device be attached to a separate holder, which does not have forces or torques of the wedge mechanism applied thereto.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: January 10, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Vollert, Dietmar Baumann, Andreas Henke, Bertram Foitzik, Willi Nagel, Dirk Hofmann
  • Patent number: 8047338
    Abstract: The invention relates to a self-boosting disk brake. In case of failure, in order to enable releasing the disk brake or putting it out of operation, the invention proposes embodying a self-boosting device so that it is movable in the direction of rotation of a brake disk and is fixable with a releasable fixation device.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: November 1, 2011
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Baumann
  • Patent number: 8020675
    Abstract: The invention relates to an electromechanical disk brake which has a switchable freewheel in order to be configured as a parking brake. The switchable freewheel includes a clamping roller freewheel having rollers for locking a motor shaft of an electric motor of the brake. A locating bearing of the motor shaft of an electric motor, and the freewheel are accommodated on a cover of a housing of the electric motor, and all the electric connections of the disc brake are routed via the cover. The number of components used can be reduced considerably by the integrated design. Moreover, the positional tolerances of the freewheel in relation to the motor shaft can be reduced with the aid of the invention.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: September 20, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
  • Patent number: 8002088
    Abstract: A self-boosting electromechanical friction brake for a motor vehicle in which, with an electromechanical actuator, a friction brake lining can be pressed against a brake disk, and the friction brake lining is braced in the brake caliper via a wedge mechanism, which effects a self boosting. A friction brake lining which is pressed by the actuator has with a lower coefficient of friction, and in particular with less relative fluctuation in the coefficient of friction, than another friction brake lining positioned fixedly in the brake caliper. An operation-dictated fluctuation in the coefficient of friction and thus a change in the self boosting is reduced, and as a result the disk brake, with a low coefficient of friction, can be actuated with less actuation force and less actuation energy.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: August 23, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
  • Patent number: 7922264
    Abstract: The invention proposes equipping a hydraulic vehicle brake system with a pedal travel modulator that has an electromechanically driven piston-cylinder unit. The piston-cylinder unit upon brake actuation “furnishes” additional brake fluid and thereby boosts a pedal travel of the vehicle brake system.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: April 12, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann
  • Publication number: 20100323310
    Abstract: A method for mechanical stoking in firing installations and a firing installation is provided. Fuel is applied to a grate using a mechanical stoker, the grate being disposed in a firing chamber, wherein the mechanical stoker is oriented opposite a delivery direction of the grate. The fuel is introduced directly below a firing chamber ceiling, viewed in the delivery direction of the grate before the end of the grate such that a burnout zone, which does not have fresh fuel applied thereto, is created on the grate between the mechanical stoker and the end of the grate.
    Type: Application
    Filed: February 12, 2009
    Publication date: December 23, 2010
    Inventors: Dietmar Baumann, Wolfgang Madlsperger, Willibald Weiss
  • Publication number: 20100258386
    Abstract: The invention relates to a self-reinforcing, in particular electromechanical disk brake having a wedge mechanism as the self-boosting device, for example. The invention proposes that the actuating device be attached to a separate holder, which does not have forces or torques of the wedge mechanism applied thereto.
    Type: Application
    Filed: October 23, 2008
    Publication date: October 14, 2010
    Inventors: Herbert Vollert, Dietmar Baumann, Andreas Henke, Bertram Foitzik, Willi Nagel, Dirk Hofmann
  • Publication number: 20100147123
    Abstract: A tool emergency brake device, in particular for a stationary saw, has a brake unit. The brake unit is designed to brake in a self-energizing manner.
    Type: Application
    Filed: October 16, 2009
    Publication date: June 17, 2010
    Inventor: Dietmar BAUMANN
  • Patent number: 7735613
    Abstract: A self-boosting electromechanical friction brake, having a friction brake lining which is displaceable for actuation in the direction of rotation of a brake disk and which is braced via roller bodies on ramps of an abutment plate. When the brake is actuated, brake disk exerts a frictional force on the brake lining pressed against it, which urges the lining in the direction of an increasingly narrow gap between the ramps and the brake disk to exert a contact pressure that is in addition to that exerted by an actuation device to attain self-boosting. The roller bodies are supported fixedly and rotatably in bearing block on the brake lining whereby the roller bodies move in slaved fashion with the brake lining and always brace the brake lining at the same points.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: June 15, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
  • Publication number: 20100109427
    Abstract: The invention relates to a hydraulic vehicle brake system with slip control. The invention proposes that wheel brakes at wheels of a front axle are of self-amplifying design in order to provide boosting of the brake force. An otherwise conventional vacuum brake force booster can be dispensed with. The invention further relates to a method for operating a hydraulic vehicle brake system, according to which, at high lining friction values, brake fluid is conducted, in a manner controlled by a valve, into a hydraulic reservoir.
    Type: Application
    Filed: March 7, 2008
    Publication date: May 6, 2010
    Inventor: Dietmar Baumann
  • Publication number: 20100044166
    Abstract: The invention relates to a self-boosting disk brake having a friction brake lining with a wedge on its rear side that faces away from the brake disk. The wedge supports the friction brake lining in a brake caliper when the disk brake is actuated. The wedge principle achieves self-boosting of the disk brake. The invention proposes providing a wedge-shaped support element between the wedge and a brake caliper, the support element supporting the wedge of the friction brake lining on the brake caliper. In order to actuate the disk brake, the support element is moved by an actuating device against the wedge.
    Type: Application
    Filed: September 10, 2007
    Publication date: February 25, 2010
    Inventor: Dietmar Baumann