Patents by Inventor Willi Nagel

Willi Nagel 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: 9409558
    Abstract: A hydraulic brake system has: a force-pressure conversion element, which is in hydraulic connection with at least one wheel brake cylinder of at least one wheel; a volume-adaptation element in hydraulic connection with the at least one wheel brake and the force-pressure conversion element; and as an actuating unit for actuating the force-pressure conversion element, which actuating unit has an input element. The pressure in the at least one wheel brake cylinder is adjusted by operating the volume-adaptation unit and/or the actuating unit. For this purpose an actuating state of the input element is maintained by operating the actuating unit when the volume-adaptation unit is being operated.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: August 9, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Wolfgang Pfeiffer, Willi Nagel, Werner Harter, Martin-Peter Bolz, Urs Bauer
  • Patent number: 9239102
    Abstract: The disclosure relates to a threaded shaft for a roller screw drive, for example for an electromechanical brake booster or an electromechanical power steering system. According to the disclosure, a helical coil with a flat, square-threaded annular cross-section is arranged on a thin-walled pipe, the pipe being formed onto a root region of the helical coil by the application of high pressure from the inside of the pipe.
    Type: Grant
    Filed: September 6, 2010
    Date of Patent: January 19, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Armin Verhagen, Willi Nagel, Bernd Goetzelmann
  • Publication number: 20150308527
    Abstract: A transmission device, for example of an electromotive brake booster, includes a first worm gear and a first pinion connected to each other and rotatable about a shared first rotation axis, a second worm gear and a second pinion connected to each other and rotatable about a shared second rotation axis, a worm shaft that can be set into rotation by an electric motor and that is contacted by the first and second worm gears, a piston that is adjustable along an adjustment axis by rotations of the first pinion about the first rotation axis and the second pinion about the second rotation axis and that is guided in a floating manner to be adjustable perpendicularly to the adjustment axis by a floating travel of at least 0.6 mm.
    Type: Application
    Filed: October 23, 2013
    Publication date: October 29, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Willi NAGEL, Remy GARNIER
  • Patent number: 9139180
    Abstract: A hydraulic main brake cylinder, preferably having an electro-mechanical brake booster for a brake assembly of a vehicle is disclosed. The main brake cylinder is provided with two pressure rod pistons, preferably nesting within each other, one of which is actuated by muscle power, and the other one is actuated by the brake booster. Furthermore, an energy store is provided, which stores energy when the main brake cylinder is released and then transferred to the main brake cylinder upon the actuation thereof, thus supporting the operation of the main brake cylinder.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: September 22, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Armin Verhagen, Jochen Mayer, Willi Nagel
  • Patent number: 8910761
    Abstract: A device and a method for the adaptive degradation of collision energy. A deformation element is provided which carries out a first motion in one direction for degrading the collision energy and undergoes tapering. In addition, an actuator system is provided which adjusts the tapering for the adaptive degradation as a function of a control signal. The actuator system is configured for a second motion in the axis of the direction of the first motion and for adjusting the tapering of the deformation element. As a result of the second motion, the actuator system is able to hold at least one die plate having a respective opening through which the deformation element is driven for adjusting the tapering. A number of die plates held by the actuator system is a function of the control signal. The die plates held in each case cause tapering of the deformation element.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: December 16, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Friedrich, Willi Nagel
  • 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: 20130333552
    Abstract: A device is described for receiving and dispensing hydraulic fluid, in particular for a hybrid or electric vehicle, having a cylinder, a piston, which is movable in the cylinder for receiving and dispensing hydraulic fluid, and a drive unit; a ramp mechanism being provided, having at least one ramp on which at least one rolling element rolls for moving the piston, the ramp mechanism being situated between a face of the piston and a face of a gearwheel driven by the drive unit.
    Type: Application
    Filed: October 13, 2011
    Publication date: December 19, 2013
    Inventors: Bertram Foitzik, Willi Nagel
  • Patent number: 8448757
    Abstract: The invention relates to an electromechanical friction brake, for example in the form of a disc brake having an electromechanical actuation device. The electric motor of the actuation device presses a frictional brake lining against a brake disc by means of a reduction gearbox and a ball ramp mechanism. The actuation device is supported by a spring washer that is pretensioned so strongly that when the disc brake is released it acts on a segment with a falling spring characteristic; that is, a spring force exerted by the spring washer on the frictional brake lining increases with increasing tension of the disc brake.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: May 28, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Vollert, Bertram Foitzik, Willi Nagel, Bernd Goetzelmann, Dirk Hofmann, Nguyet-Minh Cao
  • Publication number: 20130127237
    Abstract: A hydraulic brake system has: a force-pressure conversion element, which is in hydraulic connection with at least one wheel brake cylinder of at least one wheel; a volume-adaptation element in hydraulic connection with the at least one wheel brake and the force-pressure conversion element; and as an actuating unit for actuating the force-pressure conversion element, which actuating unit has an input element. The pressure in the at least one wheel brake cylinder is adjusted by operating the volume-adaptation unit and/or the actuating unit. For this purpose an actuating state of the input element is maintained by operating the actuating unit when the volume-adaptation unit is being operated.
    Type: Application
    Filed: January 25, 2011
    Publication date: May 23, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Wolfgang Pfeiffer, Willi Nagel, Werner Harter, Martin-Peter Bolz, Urs Bauer
  • 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: 8408367
    Abstract: The invention relates to a drum brake having an electromechanical actuating device. The invention proposes to convert a rotating drive movement of the actuating device by use of a gearwheel and two toothed racks. The toothed racks mesh with the gearwheel on opposite sides thereof and are driven in opposite directions by the gearwheel into translational movements for pressing attached brake shoes against a brake drum. The toothed racks are configured in such a way that the two toothed racks have a common line of action, with resulting symmetrical actuating forces. According to one embodiment of the invention, the lines of action of the toothed racks run tangentially with respect to the gearwheel.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: April 2, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Dirk Hofmann, Willi Nagel, Oliver Kriese
  • Publication number: 20120200009
    Abstract: The disclosure relates to a threaded shaft for a roller screw drive, for example for an electromechanical brake booster or an electromechanical power steering system. According to the disclosure, a helical coil with a flat, square-threaded annular cross-section is arranged on a thin-walled pipe, the pipe being formed onto a root region of the helical coil by the application of high pressure from the inside of the pipe.
    Type: Application
    Filed: September 6, 2010
    Publication date: August 9, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Armin Verhagen, Willi Nagel, Bernd Goetzelmann
  • Publication number: 20120192556
    Abstract: A hydraulic main brake cylinder, preferably having an electro-mechanical brake booster for a brake assembly of a vehicle is disclosed. The main brake cylinder is provided with two pressure rod pistons, preferably nesting within each other, one of which is actuated by muscle power, and the other one is actuated by the brake booster. Furthermore, an energy store is provided, which stores energy when the main brake cylinder is released and then transferred to the main brake cylinder upon the actuation thereof, thus supporting the operation of the main brake cylinder.
    Type: Application
    Filed: May 27, 2010
    Publication date: August 2, 2012
    Applicant: Robert Bosch GmbH
    Inventors: Armin Verhagen, Jochen Mayer, Willi Nagel
  • Publication number: 20120187616
    Abstract: A device and a method for the adaptive degradation of collision energy. A deformation element is provided which carries out a first motion in one direction for degrading the collision energy and undergoes tapering. In addition, an actuator system is provided which adjusts the tapering for the adaptive degradation as a function of a control signal. The actuator system is configured for a second motion in the axis of the direction of the first motion and for adjusting the tapering of the deformation element. As a result of the second motion, the actuator system is able to hold at least one die plate having a respective opening through which the deformation element is driven for adjusting the tapering. A number of die plates held by the actuator system is a function of the control signal. The die plates held in each case cause tapering of the deformation element.
    Type: Application
    Filed: July 27, 2010
    Publication date: July 26, 2012
    Inventors: Thomas Friedrich, Willi Nagel
  • Publication number: 20120097490
    Abstract: A retaining bolt for attaching a brake caliper to a support is attached. The retaining bolt is hollow and includes a retaining element which is fixed on one side in a cavity of the retaining bolt, supporting a permanent magnet on a free end. When the retaining bolt is moved due to an external load, the permanent magnet moves in the cavity of the retaining bolt and the modification of the magnetic field thus produced can be measured by a magnetic sensor. The retaining bolt allows the braking power of the disk brake to be measured.
    Type: Application
    Filed: July 27, 2009
    Publication date: April 26, 2012
    Applicant: Robert Bosch GmbH
    Inventors: Herbert Vollert, Anton Dukart, Bertram Foitzik, Willi Nagel, Bernd Goetzelmann, Joern Tilsch
  • Patent number: 8118149
    Abstract: The invention relates to a selective freewheeling mechanism for developing an electromechanical vehicle brake (service brake) into a parking brake. The freewheeling mechanism according to the invention has an outer ring and a locking element cage which are configured as an electric motor with a rotor and a stator. The rotor and stator can be swiveled in relation to each other when a coil is supplied with current. Due to a symmetric design, the freewheeling mechanism is advantageously insensitive to acceleration forces.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: February 21, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Chi-Thuan Cao, Dirk Hofmann, Herbert Vollert, Willi Nagel, Bertram Foitzik, Bernd Goetzelmann
  • 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
  • Publication number: 20110248557
    Abstract: A brake booster coupling device is described having a braking piston, an input piston, which is displaceable in the event of an operation of a brake input element from its starting position by a driver braking distance, a force transmission between the input piston, which is displaced by a driver braking distance below a predefined threshold value, and the braking piston is suppressed, and a booster piston, which is displaceable with the aid of the brake booster drive in such a way that the braking piston, which contacts the booster piston, is displaceable with the aid of the brake booster drive from a non-braking position into at least one braking position, the brake booster coupling device including a contact element, which is displaceable and/or deformable in the event of a displacement of the braking piston from the non-braking position into the at least one braking position in such a way that a first contact surface of the contact element contacts a second contact surface of the input piston, which is di
    Type: Application
    Filed: March 16, 2011
    Publication date: October 13, 2011
    Inventors: Frank Overzier, Jochen Mayer, Willi Nagel, Bernd Goetzelmann
  • Publication number: 20110232407
    Abstract: The invention relates to helical gearing having a spindle and a counterpart, which engages on a thread of the spindle. The counterpart is, for example, tube-shaped, encloses the spindle concentrically, and has rollers on the inside of the counterpart which roll on thread flanks of the thread. By rotation of the spindle, the counterpart is driven like the nut of a spindle drive. The thread of the helical gearing according to the invention is provided with a changing pitch and thus a changing gear ratio.
    Type: Application
    Filed: July 27, 2009
    Publication date: September 29, 2011
    Inventors: Armin Verhagen, Willi Nagel, Bernd Goetzelmann
  • 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