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).
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Patent number: 11958000Abstract: 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: GrantFiled: December 16, 2022Date of Patent: April 16, 2024Assignee: MANN+HUMMEL GmbHInventors: Christoph Baumann, Oliver Glueck, Guenter Jokschas, Idriss Razgani, Dietmar Talmon-Gros, Martin Weindorf
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Patent number: 10202109Abstract: 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: GrantFiled: November 23, 2011Date of Patent: February 12, 2019Assignee: Robert Bosch GmbHInventor: Dietmar Baumann
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Patent number: 9216723Abstract: 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: GrantFiled: October 25, 2011Date of Patent: December 22, 2015Assignee: Robert Bosch GmbHInventor: Dietmar Baumann
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Patent number: 8827053Abstract: 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: GrantFiled: March 19, 2007Date of Patent: September 9, 2014Assignee: Robert Bosch GmbHInventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
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Publication number: 20140001821Abstract: 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: ApplicationFiled: November 23, 2011Publication date: January 2, 2014Applicant: Robert Bosch GmbHInventor: Dietmar Baumann
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Publication number: 20130341132Abstract: 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: ApplicationFiled: December 13, 2011Publication date: December 26, 2013Applicant: Robert Bosch GmbHInventor: Dietmar Baumann
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Publication number: 20130342005Abstract: 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: ApplicationFiled: October 25, 2011Publication date: December 26, 2013Applicant: ROBERT BOSCH GMBHInventor: Dietmar Baumann
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Patent number: 8448755Abstract: 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: GrantFiled: November 29, 2007Date of Patent: May 28, 2013Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann
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Patent number: 8439170Abstract: 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: GrantFiled: June 14, 2006Date of Patent: May 14, 2013Assignee: Robert Bosch GmbHInventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
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Patent number: 8091690Abstract: 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: GrantFiled: October 23, 2008Date of Patent: January 10, 2012Assignee: Robert Bosch GmbHInventors: Herbert Vollert, Dietmar Baumann, Andreas Henke, Bertram Foitzik, Willi Nagel, Dirk Hofmann
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Patent number: 8047338Abstract: 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: GrantFiled: September 19, 2007Date of Patent: November 1, 2011Assignee: Robert Bosch GmbHInventor: Dietmar Baumann
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Patent number: 8020675Abstract: 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: GrantFiled: June 6, 2006Date of Patent: September 20, 2011Assignee: Robert Bosch GmbHInventors: Chi-Thuan Cao, Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann, Hans Frick
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Patent number: 8002088Abstract: 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: GrantFiled: April 28, 2005Date of Patent: August 23, 2011Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
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Patent number: 7922264Abstract: 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: GrantFiled: March 2, 2009Date of Patent: April 12, 2011Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann
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Publication number: 20100323310Abstract: 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: ApplicationFiled: February 12, 2009Publication date: December 23, 2010Inventors: Dietmar Baumann, Wolfgang Madlsperger, Willibald Weiss
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Publication number: 20100258386Abstract: 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: ApplicationFiled: October 23, 2008Publication date: October 14, 2010Inventors: Herbert Vollert, Dietmar Baumann, Andreas Henke, Bertram Foitzik, Willi Nagel, Dirk Hofmann
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Publication number: 20100147123Abstract: 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: ApplicationFiled: October 16, 2009Publication date: June 17, 2010Inventor: Dietmar BAUMANN
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Patent number: 7735613Abstract: 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: GrantFiled: November 19, 2004Date of Patent: June 15, 2010Assignee: Robert Bosch GmbHInventors: Dietmar Baumann, Dirk Hofmann, Herbert Vollert, Willi Nagel, Andreas Henke, Bertram Foitzik, Bernd Goetzelmann
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Publication number: 20100109427Abstract: 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: ApplicationFiled: March 7, 2008Publication date: May 6, 2010Inventor: Dietmar Baumann
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Publication number: 20100044166Abstract: 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: ApplicationFiled: September 10, 2007Publication date: February 25, 2010Inventor: Dietmar Baumann