Patents by Inventor Christian Spielvogel
Christian Spielvogel 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: 9879533Abstract: A spring return apparatus for elastically prestressing sliding pads against a sliding bearing face of an axial piston machine. The sliding pads are positioned on working pistons mounted axially movably in cylinders of a cylinder barrel that drives a drive shaft including a spring plate and a supporting plate. The spring plate includes a ring region surrounding a central opening, and levers extending radially from the ring region. The levers are arranged spaced apart or distributed uniformly in the circumferential direction, and are elastically flexible and/or elastically pivotable in the axial direction. Every two adjacent levers delimit a receiving region for receiving a tapered section of a working piston or a sliding pad. The supporting plate has a circular ring-shaped supporting region configured to support radially outer end sections of the levers if the supporting plate is arranged concentrically with respect to and axially adjacently to the spring plate.Type: GrantFiled: March 7, 2014Date of Patent: January 30, 2018Assignee: Robert Bosch GmbHInventors: Christian Spielvogel, Manuel Sell, Martin Zug, Timo Nafz
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Patent number: 9441756Abstract: A valve arrangement includes at least two valves and a housing which is configured as an installation cartridge. One of the valves is configured as a pressure regulator and the other of the valves is configured as a delivery flow regulator. The valve arrangement is configured to be inserted or screwed into a variable-displacement pump, thereby minimizing the spatial requirement of the valve arrangement.Type: GrantFiled: March 10, 2015Date of Patent: September 13, 2016Assignee: Robert Bosch GmbHInventor: Christian Spielvogel
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Patent number: 9441747Abstract: A pressure/flow regulator includes a pressure control valve, a flow control valve, and a first control connection configured to set a variable displacement pump. The control connection is configured to be discharged to a tank by the flow control valve via a control edge of the pressure control valve that is open in the idle position of a valve piston of the pressure control valve.Type: GrantFiled: March 30, 2011Date of Patent: September 13, 2016Assignee: Robert Bosch GmbHInventors: Christian Spielvogel, Friedemann Nordt, Carola Diebold
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Patent number: 9341180Abstract: A connection plate for a hydrostatic piston machine includes two connection openings on opposite lateral surfaces of the connection plate. The connection openings are arranged at an offset from a main axis of the connection plate on a common side. Two slotted recesses are formed from an inner face of the connection plate. The slotted recesses are each connected in the area of the first end section of the slotted recesses to one of the connection openings in order to connect the piston machine to a hydraulic circuit. A valve cartridge is inserted in an installation bore of the connection plate. The installation bore is formed opposite the plate axis in the connection plate with respect to the connection openings and extends approximately parallel to axes of the connection openings. The valve cartridge is hydraulically connected to one of the slots.Type: GrantFiled: March 12, 2011Date of Patent: May 17, 2016Assignee: Robert Bosch GmbHInventor: Christian Spielvogel
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Publication number: 20150226349Abstract: A valve arrangement includes at least two valves and a housing which is configured as an installation cartridge. One of the valves is configured as a pressure regulator and the other of the valves is configured as a delivery flow regulator. The valve arrangement is configured to be inserted or screwed into a variable-displacement pump, thereby minimizing the spatial requirement of the valve arrangement.Type: ApplicationFiled: March 10, 2015Publication date: August 13, 2015Inventor: Christian Spielvogel
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Patent number: 8985138Abstract: A valve arrangement includes at least two valves and a housing which is configured as an installation cartridge. One of the valves is configured as a pressure regulator and the other of the valves is configured as a delivery flow regulator. The valve arrangement is configured to be inserted or screwed into a variable-displacement pump, thereby minimizing the spatial requirement of the valve arrangement.Type: GrantFiled: March 30, 2011Date of Patent: March 24, 2015Assignee: Robert Bosch GmbHInventor: Christian Spielvogel
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Publication number: 20140265079Abstract: A spring return apparatus for elastically prestressing sliding pads against a sliding bearing face of an axial piston machine. The sliding pads are positioned on working pistons mounted axially movably in cylinders of a cylinder barrel that drives a drive shaft including a spring plate and a supporting plate. The spring plate includes a ring region surrounding a central opening, and levers extending radially from the ring region. The levers are arranged spaced apart or distributed uniformly in the circumferential direction, and are elastically flexible and/or elastically pivotable in the axial direction. Every two adjacent levers delimit a receiving region for receiving a tapered section of a working piston or a sliding pad. The supporting plate has a circular ring-shaped supporting region configured to support radially outer end sections of the levers if the supporting plate is arranged concentrically with respect to and axially adjacently to the spring plate.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Applicant: Robert Bosch GmbHInventors: Christian Spielvogel, Manuel Sell, Martin Zug, Timo Nafz
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Patent number: 8776668Abstract: A machine housing of a piston machine is disclosed. The machine housing is formed in two parts. The machine housing has a main housing which is closed off by a connection plate. Here, the connection plate is screwed to the main housing by means of a plurality of screws, and is positioned with low tolerances with respect to said main housing by means of two centering pins. Here, the centering pins are arranged with twofold rotational symmetry with respect to a shaft axis of a drive shaft of the piston machine. In contrast, screw positions do not have rotational symmetry with respect to said shaft axis. This prevents incorrect mounting of the connection plate.Type: GrantFiled: April 13, 2011Date of Patent: July 15, 2014Assignee: Robert Bosch GmbHInventors: Christian Spielvogel, Martin Zug
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Publication number: 20130199631Abstract: A pressure/flow regulator includes a pressure control valve, a flow control valve, and a first control connection configured to set a variable displacement pump. The control connection is configured to be discharged to a tank by the flow control valve via a control edge of the pressure control valve that is open in the idle position of a valve piston of the pressure control valve.Type: ApplicationFiled: March 30, 2011Publication date: August 8, 2013Inventors: Christian Spielvogel, Friedemann Nordt, Carola Diebold
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Publication number: 20130195699Abstract: A connection plate for a hydrostatic piston machine includes two connection openings on opposite lateral surfaces of the connection plate. The connection openings are arranged at an offset from a main axis of the connection plate on a common side. Two slotted recesses are formed from an inner face of the connection plate. The slotted recesses are each connected in the area of the first end section of the slotted recesses to one of the connection openings in order to connect the piston machine to a hydraulic circuit. A valve cartridge is inserted in an installation bore of the connection plate. The installation bore is formed opposite the plate axis in the connection plate with respect to the connection openings and extends approximately parallel to axes of the connection openings. The valve cartridge is hydraulically connected to one of the slots.Type: ApplicationFiled: March 12, 2011Publication date: August 1, 2013Applicant: ROBERT BOSCH GMBHInventor: Christian Spielvogel
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Publication number: 20130126010Abstract: A valve arrangement includes at least two valves and a housing which is configured as an installation cartridge. One of the valves is configured as a pressure regulator and the other of the valves is configured as a delivery flow regulator. The valve arrangement is configured to be inserted or screwed into a variable-displacement pump, thereby minimizing the spatial requirement of the valve arrangement.Type: ApplicationFiled: March 30, 2011Publication date: May 23, 2013Applicant: ROBERT BOSCH GmbHInventor: Christian Spielvogel
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Publication number: 20130092250Abstract: A control valve assembly includes a valve body which is pre-stressed in a direction by a control spring assembly. The spring preload of the control spring assembly is adjustable by an adjusting device which is completely accommodated in the valve box or a fitted housing part.Type: ApplicationFiled: November 19, 2010Publication date: April 18, 2013Applicant: Robert Bosch GmbHInventors: Christian Spielvogel, Martin Zug
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Publication number: 20120279387Abstract: An axial piston machine having a swashplate design includes a cylinder drum that is rotatably supported in a housing and that has a plurality of cylinder bores, which have pistons that can be slid longitudinally in said cylinder bores and that are supported on a swashplate. The aim of the disclosure is to achieve an improvement in the efficiency with a short length design by means of reducing the lost forces. The aim is achieved in that no force components act on the pistons in the radial direction.Type: ApplicationFiled: September 6, 2010Publication date: November 8, 2012Applicant: Robert Bosch GmbHInventor: Christian Spielvogel
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Publication number: 20120273067Abstract: A hydraulic valve arrangement is disclosed. In particular, a regulating-valve arrangement of a variable displacement pump is disclosed, wherein a valve piston of a valve is pre-stressed into a basic position via a spring arrangement. The spring arrangement is supported on an expander.Type: ApplicationFiled: September 15, 2010Publication date: November 1, 2012Applicant: Robert Bosch GmbHInventor: Christian Spielvogel
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Publication number: 20110252958Abstract: A machine housing of a piston machine is disclosed. The machine housing is formed in two parts. The machine housing has a main housing which is closed off by a connection plate. Here, the connection plate is screwed to the main housing by means of a plurality of screws, and is positioned with low tolerances with respect to said main housing by means of two centering pins. Here, the centering pins are arranged with twofold rotational symmetry with respect to a shaft axis of a drive shaft of the piston machine. In contrast, screw positions do not have rotational symmetry with respect to said shaft axis. This prevents incorrect mounting of the connection plate.Type: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Applicant: Robert Bosch GmbHInventors: Christian Spielvogel, Martin Zug
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Publication number: 20110192276Abstract: An axial piston machine of swashplate design includes a cylindrical drum which is rotatably supported in a housing and has a plurality of cylindrical bores with pistons longitudinally displaceable therein which rest against a swashplate via a joint. The joint has a first joint part with a spherical head and a second joint part with a spherical seat for the head. The joint can be manufactured quickly and using simple, economical production engineering, in that the first joint part is rotatably held in the second joint part, which has an annular groove in the inner surface of a tubular edge, into which a wire has been introduced through a bore.Type: ApplicationFiled: January 24, 2011Publication date: August 11, 2011Inventor: Christian Spielvogel
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Patent number: D673596Type: GrantFiled: October 15, 2010Date of Patent: January 1, 2013Assignee: Robert Bosch GmbHInventors: Martin Schultheiss, Christian Spielvogel