Patents by Inventor Clemens Krebs

Clemens Krebs 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: 9447686
    Abstract: An axial piston machine includes a housing having a casting which is optimized with respect to casting. An insert ring which is optimized with respect to a pressure load is formed in the bottom of the housing. The insert ring is configured to be used with such an axial piston machine.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: September 20, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Clemens Krebs
  • Patent number: 9341170
    Abstract: An axial piston machine includes a housing part, a drive shaft, which is mounted in the housing part, and a cylinder drum, which is connected to the drive shaft in a rotationally fixed manner and which accommodates a plurality of pistons. Each of the pistons bound a working chamber and are supported on a swashplate. The working chambers can be connected in alternation to a high-pressure channel and to a low-pressure channel, which extend in the housing part. An insert part is rigidly inserted into the housing part. A control surface of the insert part is directly opposite the cylinder drum. The insert part has a high-pressure channel section and a low-pressure channel section, which have approximately kidney-shaped opening areas in the control surface. The other openings of the high-pressure and low-pressure channel sections opposite the opening area in the control surface are formed radially on the insert part.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: May 17, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Clemens Krebs
  • Patent number: 9297369
    Abstract: A hydrostatic machine having an actuating device for adjusting a displacement volume of the hydrostatic machine is provided. The actuating device has a return element for actuating a control valve as a function of a position of the actuating device. A valve unit is further provided for adjusting an actuating pressure of the actuating device, which is activated mechanically by means of the return element.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: March 29, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Michael Duerr, Clemens Krebs
  • Publication number: 20130298754
    Abstract: An axial piston machine includes a housing part, a drive shaft, which is mounted in the housing part, and a cylinder drum, which is connected to the drive shaft in a rotationally fixed manner and which accommodates a plurality of pistons. Each of the pistons bound a working chamber and are supported on a swashplate. The working chambers can be connected in alternation to a high-pressure channel and to a low-pressure channel, which extend in the housing part. An insert part is rigidly inserted into the housing part. A control surface of the insert part is directly opposite the cylinder drum. The insert part has a high-pressure channel section and a low-pressure channel section, which have approximately kidney-shaped opening areas in the control surface. The other openings of the high-pressure and low-pressure channel sections opposite the opening area in the control surface are formed radially on the insert part.
    Type: Application
    Filed: August 5, 2011
    Publication date: November 14, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Clemens Krebs
  • Patent number: 8555773
    Abstract: A retaining segment for retaining a back-up plate of a hydrostatic piston machine is disclosed. The retaining segment has a recess for an actuating element of an adjusting device and a retaining surface that extends along an arc section. A stop surface is formed on the retaining segment. The stop surface and the receiver for an actuating element are formed on opposing ends of the retaining segment and are oriented towards a side remote from a mounting surface.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: October 15, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Dreher, Clemens Krebs
  • Publication number: 20130199363
    Abstract: An axial piston machine includes a housing having a casting which is optimized with respect to casting. An insert ring which is optimized with respect to a pressure load is formed in the bottom of the housing. The insert ring is configured to be used with such an axial piston machine.
    Type: Application
    Filed: June 22, 2011
    Publication date: August 8, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Clemens Krebs
  • Patent number: 8418599
    Abstract: An axial piston machine is provided. The pivoting cradle of the axial piston machine has variable tilt. The axial piston machine has at least one adjustment device extending substantially in the longitudinal direction of the axial piston machine. The axial piston machine further has a return element for returning to a position of the pivoting cradle. The return element and the adjustment device are disposed in a plane extending parallel to an axis of rotation of the axial piston machine and perpendicular to a pivoting axis of the pivoting cradle.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: April 16, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Dreher, Clemens Krebs
  • Patent number: 8261654
    Abstract: An axial piston machine is provided, which has a swivel cradle, the inclination of which can be modified in relation to a rotational axis of a cylinder drum. A regulation system acts on the swivel cradle, which has a first regulator for adjusting the inclination of the swivel cradle in a first displacement direction and a second regulator for adjusting the inclination in an opposite second displacement direction. The first and second regulators are located on opposite sides of the swivel cradle in relation to the rotational axis. The axial piston machine also has a device for limiting the displacement of the swivel cradle, which has a first adjustable limiting device and a second adjustable limiting device, which each act on the swivel cradle and are located on opposite sides of the swivel cradle in relation to the rotational axis.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: September 11, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Dreher, Clemens Krebs
  • Publication number: 20110277624
    Abstract: An adjustment device according to the disclosure of a hydrostatic machine comprises at least one adjusting piston, a control valve and a follower which is attached between the adjusting piston and control valve and couples the position of the adjusting piston back to the control valve. The follower branches off on the control valve side into two arms that openly surround a component operatively connected to the control valve and are elastically connected to a shaft of the follower.
    Type: Application
    Filed: January 26, 2010
    Publication date: November 17, 2011
    Applicant: Robert Bosch GmbH
    Inventors: Timo Nafz, Clemens Krebs
  • Patent number: 8006610
    Abstract: An axial piston machine in a swash-plate construction with an actuating device. The actuating device comprises a actuating piston and a mating piston. The actuating piston and the mating piston are connected to the swash plate each with the first end thereof and can be applied with the second end thereof with a force acting in the direction of the first end. For resetting the swash plate in the direction of a resting position, an elastic element is provided on the actuating piston and on the mating piston, which is supported on a spring bearing arranged on the first side facing the swash plate of the actuating piston or of the mating piston. In the other direction, the elastic element is supported on a second spring bearing arranged on the end facing away from the swash plate of the actuating piston or of the mating piston.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: August 30, 2011
    Inventors: Herbert Dreher, Clemens Krebs, Timo Nafz
  • Publication number: 20100322789
    Abstract: The invention relates to a hydrostatic axial piston engine (1), having a housing (2), which with two transverse walls (18a, 18b) and a peripheral wall (2c) connecting these longitudinally to one another surrounds an interior (3), a driving shaft (19), which extends longitudinally in the housing (2) and is mounted rotatably in the housing (2), and a swash plate (4), which is mounted longitudinally adjacent to the cylinder drum (5) in the housing (2) and supported against which in an articulated manner are pistons (9) that are reciprocably mounted in approximately longitudinally extending piston holes (6) in the cylinder drum (5).
    Type: Application
    Filed: December 20, 2007
    Publication date: December 23, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Gerhard Betz, Herbert Dreher, Clemens Krebs, Michael Duerr
  • Publication number: 20100307330
    Abstract: The invention relates to an axial piston machine comprising a swivel cradle (5), the inclination of which can be modified in relation to a rotational axis of a cylinder drum. A regulation system acts on the swivel cradle, said system comprising a first regulator (10) for adjusting the inclination of the swivel cradle (5) in a first displacement direction and a second regulator (35) for adjusting the inclination of the swivel cradle (5) in an opposite second displacement direction. The first and second regulators (10, 35) are located on opposite sides of the swivel cradle (5) in relation to the rotational axis. The axial piston machine also has a device for limiting the displacement of the swivel cradle. The device for limiting the displacement of the swivel cradle (5) comprises a first settable limiting device (39). The two limiting device (25, 39) act on the swivel cradle (5) and are located on opposite sides of the swivel cradle (5) in relation to the rotational axis.
    Type: Application
    Filed: May 14, 2008
    Publication date: December 9, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Herbert Dreher, Clemens Krebs
  • Publication number: 20100300281
    Abstract: The invention relates to a retaining segment (17, 38) for retaining a back-up plate of a hydrostatic piston machine. The retaining segment (17, 38) has a recess (20) for an actuating element of an adjusting device and a retaining surface that extends along an arc section (48). A stop surface (26, 40) is formed on the retaining segment (17, 38).
    Type: Application
    Filed: May 14, 2008
    Publication date: December 2, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Herbert Dreher, Clemens Krebs
  • Publication number: 20100206161
    Abstract: An axial piston machine in a swash-plate construction with an actuating device. The actuating device comprises a actuating piston and a mating piston. The actuating piston and the mating piston are connected to the swash plate each with the first end thereof and can be applied with the second end thereof with a force acting in the direction of the first end. For resetting the swash plate in the direction of a resting position, an elastic element is provided on the actuating piston and on the mating piston, which is supported on a spring bearing arranged on the first side facing the swash plate of the actuating piston or of the mating piston. In the other direction, the elastic element is supported on a second spring bearing arranged on the end facing away from the swash plate of the actuating piston or of the mating piston.
    Type: Application
    Filed: February 22, 2010
    Publication date: August 19, 2010
    Inventors: Herbert DREHER, Clemens KREBS, Timo NAFZ
  • Publication number: 20100199838
    Abstract: A hydraulic system with an adjustable hydrostatic machine is provided that includes an adjustment mechanism. The adjustment mechanism interacts with an actuating device which has at least one actuating piston delimiting an actuating pressure space. The system has a regulating valve with which, for the displacement of the actuating piston and therefore for the actuation of the adjustment device, the supply and removal of pressure medium into and from the actuating pressure chamber can be controlled, wherein the regulating valve has a valve piston which is subjected to a force of a feedback spring, which force is dependent on the position of the adjustment mechanism. The valve piston is additionally subjected to a counterforce acting counter to the force of the feedback spring, and an actuating component is provided, with which the valve piston can be subjected to a control force acting in the same direction as the counterforce or to a control force acting counter to the counterforce.
    Type: Application
    Filed: February 22, 2010
    Publication date: August 12, 2010
    Inventors: Clemens KREBS, Timo Nafz
  • Publication number: 20100202900
    Abstract: The invention relates to a hydrostatic machine having an actuating device for adjusting a displacement volume of the hydrostatic machine, wherein the actuating device has a return element (3) for actuating a control valve (15) as a function of a position of the actuating device, wherein a valve unit (6) is further provided for adjusting an actuating pressure of the actuating device, which is activated mechanically by means of the return element (3).
    Type: Application
    Filed: July 28, 2008
    Publication date: August 12, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Michael Duerr, Clemens Krebs
  • Publication number: 20100132544
    Abstract: The invention relates to an axial piston machine comprising a pivoting cradle having variable tilt. The axial piston machine has at least one adjustment device extending substantially in the longitudinal direction of the axial piston machine. The axial piston machine further comprises a return element for returning to a position of the pivoting cradle. The return element and the adjustment device are disposed in a plane extending parallel to an axis of rotation of the axial piston machine and perpendicular to a pivoting axis of the pivoting cradle.
    Type: Application
    Filed: May 14, 2008
    Publication date: June 3, 2010
    Applicant: ROBERT BOSCH GMBH
    Inventors: Herbert Dreher, Clemens Krebs
  • Patent number: 7624748
    Abstract: The invention relates to a valve which is insertable into a receiving recess (21) of a valve carrier (22), the valve (1, 1?) comprising a first housing part (2, 2?) and a closing body (4). The closing body (4) cooperates with a sealing surface (9) to form a sealing seat, the valve (1, 1?) being fixable in the receiving recess (21) of the valve carrier (22) by means of the first housing part (2, 2?). A second housing part (3, 3?) is connectable by way of a first end (7) to the first housing part (2, 2?) and the sealing surface (9) cooperating with the closing body (4) is formed on the second housing part (3, 3?).
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: December 1, 2009
    Assignee: Brueninghaus Hydromatik GmbH
    Inventor: Clemens Krebs
  • Patent number: 7526919
    Abstract: The invention relates to a drive system (1) having a first driving shaft (2) and having a second driving shaft (3). The second driving shaft (3) is connected to a cylinder barrel of a hydrostatic piston machine (4) in a torsionally rigid manner. The displacement volume of the hydrostatic piston machine (4) can be shifted by means of a shifting means (5), and the first driving shaft (2) can be mechanically coupled to the second driving shaft (3) through a clutch (6). The shifting means (5) and the clutch (6) can be actuated hydraulically and, for the purpose of actuation, are connected to a common control-pressure connection (11) or a common working-line connection (134).
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: May 5, 2009
    Assignee: Brueninghaus Hydromatik GmbH
    Inventors: Herbert Dreher, Clemens Krebs
  • Publication number: 20080229739
    Abstract: The invention relates to a drive system (1) having a first driving shaft (2) and having a second driving shaft (3). The second driving shaft (3) is connected to a cylinder barrel of a hydrostatic piston machine (4) in a torsionally rigid manner. The displacement volume of the hydrostatic piston machine (4) can be shifted by means of a shifting means (5), and the first driving shaft (2) can be mechanically coupled to the second driving shaft (3) through a clutch (6). The shifting means (5) and the clutch (6) can be actuated hydraulically and, for the purpose of actuation, are connected to a common control-pressure connection (11) or a common working-line connection (134).
    Type: Application
    Filed: March 4, 2005
    Publication date: September 25, 2008
    Inventors: Herbert Dreher, Clemens Krebs