Patents by Inventor Wolf Stahr
Wolf Stahr 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: 11746915Abstract: The disclosure relates to a valve assembly, comprising a valve body, in which a fluid channel is formed that connects a fluid inlet to a fluid outlet, wherein a preload force is applied to a closing body, which is movably mounted in the fluid channel, in the direction of a valve seat formed in the valve body, a fluid force acting on the closing body against the preload force in order to open the valve seat. The closing body is guided axially and/or radially by at least one guide ball, the guide ball being arranged between the closing body and a lateral boundary of the fluid channel.Type: GrantFiled: February 7, 2020Date of Patent: September 5, 2023Assignee: Robert Bosch GmbHInventors: Andreas Lechler, Wolf Stahr, Patrick Schellnegger, Joern Kreutzer, Christoph Eisele, Andrej Gardt, Marcus Biehler, Michael Kloss, Felix Schorn
-
Patent number: 11491962Abstract: A hydraulic braking system for a vehicle includes a master brake cylinder, a hydraulic unit and a plurality of wheel brakes, the hydraulic unit including at least one brake circuit for brake pressure modulation in the wheel brakes. A bistable solenoid valve is associated with at least one wheel brake, which valve is looped into the corresponding fluid channel, immediately upstream of the associated wheel brake, and in a de-energized open position enables brake pressure modulation in the associated wheel brake, and in a de-energized closed position seals a current brake pressure in the associated wheel brake, wherein a hydraulic force brought about by the sealed-in brake pressure acts in a seat-opening manner in the corresponding bistable solenoid valve.Type: GrantFiled: December 7, 2018Date of Patent: November 8, 2022Assignee: Robert Bosch GmbHInventors: Wolf Stahr, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Wolfgang Schuller
-
Patent number: 11383686Abstract: A bistable solenoid valve for a hydraulic brake system, includes a guide sleeve, in which an upper and a lower non-moving pole core are arranged fixedly and a closing element is arranged movably, wherein the closing element penetrates into a valve seat during a closing movement and lifts up from the valve seat during an opening movement. The closing element is connected fixedly to a permanent magnet, wherein the permanent magnet is positioned between the lower and the upper pole core. A coil group is positioned around the guide sleeve and substantially encloses the guide sleeve. The coil group includes at least two coils, wherein the coil group is configured in such a way that an actuation of a movement of the closing element takes place by means of an activation of the at least two coils.Type: GrantFiled: June 27, 2018Date of Patent: July 12, 2022Assignee: Robert Bosch GmbHInventors: Wolf Stahr, Klaus Landesfeind, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Wolfgang Schuller
-
Publication number: 20220178455Abstract: The disclosure relates to a valve assembly, comprising a valve body, in which a fluid channel is formed that connects a fluid inlet to a fluid outlet, wherein a preload force is applied to a closing body, which is movably mounted in the fluid channel, in the direction of a valve seat formed in the valve body, a fluid force acting on the closing body against the preload force in order to open the valve seat. The closing body is guided axially and/or radially by at least one guide ball, the guide ball being arranged between the closing body and a lateral boundary of the fluid channel.Type: ApplicationFiled: February 7, 2020Publication date: June 9, 2022Inventors: Andreas Lechler, Wolf Stahr, Patrick Schellnegger, Joern Kreutzer, Christoph Eisele, Andrej Gardt, Marcus Biehler, Michael Kloss, Felix Schorn
-
Patent number: 11351973Abstract: A bistable solenoid valve for a hydraulic brake system has a guide sleeve in which an upper immovable pole core is fixedly arranged and a closing element is displaceably arranged. The closing element is forced into a valve seat during a closing movement and lifts off from the valve seat during an opening movement, and is fixedly connected to a magnet assembly. An actuation of the movement of the closing element is performed by the magnet assembly via a coil positioned around and substantially surrounding the guide sleeve. A lower immovable pole core is fixedly arranged in the guide sleeve and the magnet assembly is positioned between the lower and the upper pole core.Type: GrantFiled: June 11, 2018Date of Patent: June 7, 2022Assignee: Robert Bosch GmbHInventors: Massimiliano Ambrosi, Edgar Kurz, Wolf Stahr, Wolfgang Schuller, Klaus Landesfeind, Michael Eisenlauer
-
Publication number: 20210331654Abstract: A bistable solenoid valve for a hydraulic brake system, includes a guide sleeve, in which an upper and a lower non-moving pole core are arranged fixedly and a closing element is arranged movably, wherein the closing element penetrates into a valve seat during a closing movement and lifts up from the valve seat during an opening movement. The closing element is connected fixedly to a permanent magnet, wherein the permanent magnet is positioned between the lower and the upper pole core. A coil group is positioned around the guide sleeve and substantially encloses the guide sleeve. The coil group includes at least two coils, wherein the coil group is configured in such a way that an actuation of a movement of the closing element takes place by means of an activation of the at least two coils.Type: ApplicationFiled: June 27, 2018Publication date: October 28, 2021Inventors: Wolf Stahr, Klaus Landesfeind, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Wolfgang Schuller
-
Patent number: 11149596Abstract: A valve for variable throttling of a hydraulic flow includes a tappet and a guide element in which the tappet is guided for movement in a stroke direction. The valve also includes at least one fatigue-resistant, mechanical member that locally reduces a radial play of the tappet so as to reduce possible valve oscillations.Type: GrantFiled: May 31, 2020Date of Patent: October 19, 2021Assignee: Robert Bosch GmbHInventors: Andreas Lechler, Andrej Gardt, Christoph Eisele, Edgar Kurz, Felix Schorn, Joern Kreutzer, Marcus Biehler, Michael Kloss, Patrick Schellnegger, Wolf Stahr
-
Publication number: 20210162975Abstract: A hydraulic braking system for a vehicle includes a master brake cylinder, a hydraulic unit and a plurality of wheel brakes, the hydraulic unit including at least one brake circuit for brake pressure modulation in the wheel brakes. A bistable solenoid valve is associated with at least one wheel brake, which valve is looped into the corresponding fluid channel, immediately upstream of the associated wheel brake, and in a de-energized open position enables brake pressure modulation in the associated wheel brake, and in a de-energized closed position seals a current brake pressure in the associated wheel brake, wherein a hydraulic force brought about by the sealed-in brake pressure acts in a seat-opening manner in the corresponding bistable solenoid valve.Type: ApplicationFiled: December 7, 2018Publication date: June 3, 2021Inventors: Wolf Stahr, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Wolfgang Schuller
-
Patent number: 10994717Abstract: In a solenoid valve for a hydraulic braking system, a valve body has a receiving region which at least partially accommodates a guide assembly, the valve armature running axially through at least one through-opening of the guide assembly. A mechanical detent device is formed between the guide assembly and the valve armature, the detent device releasing the valve armature when the latter is in a de-energised closed position, such that the restoring spring drives the valve armature and pushes the closing element sealingly into the valve seat to produce a sealing function, and said detent device fixes the valve armature in a de-energised open position against the force of the restoring spring in an axial detent position, such that the closing element is raised from the valve seat.Type: GrantFiled: September 20, 2017Date of Patent: May 4, 2021Assignee: Robert Bosch GmbHInventors: Wolf Stahr, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Dietmar Kratzer
-
Patent number: 10953860Abstract: In a solenoid valve for a hydraulic braking system, a mechanical locking device is formed between a guide assembly and a valve armature or tappet. The mechanical locking device releases the valve armature or the tappet in a currentless closed position such that the restoring spring drives the valve armature and presses the closing element into the valve seat to seal and fastens the valve armature or the tappet in a currentless open position against the force of the restoring spring in an axial locking position such that the closing element lifts from the valve seat. The valve armature includes a main-stage armature having a first surface to which pressure is applied and a preliminary-stage armature having a smaller, second surface to which pressure is applied. The preliminary-stage armature is mounted axially movably in the main-stage armature and interacts with a preliminary-stage seat by means of a preliminary-stage closing element.Type: GrantFiled: September 20, 2017Date of Patent: March 23, 2021Assignee: Robert Bosch GmbHInventors: Wolf Stahr, Pascal Godbillon, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Dietmar Kratzer
-
Publication number: 20200400045Abstract: A valve for variable throttling of a hydraulic flow includes a tappet and a guide element in which the tappet is guided for movement in a stroke direction. The valve also includes at least one fatigue-resistant, mechanical member that locally reduces a radial play of the tappet so as to reduce possible valve oscillations.Type: ApplicationFiled: May 31, 2020Publication date: December 24, 2020Inventors: Andreas Lechler, Andrej Gardt, Christoph Eisele, Edgar Kurz, Felix Schorn, Joern Kreutzer, Marcus Biehler, Michael Kloss, Patrick Schellnegger, Wolf Stahr
-
Patent number: 10787160Abstract: An adjustable magnetic valve includes a magnet assembly and a guide sleeve in which a static component is arranged fixedly and a valve armature is arranged so as to be axially displaceable therein. The magnet assembly is pushed onto the static component and the guide sleeve. The static component forms an axial stop for the valve armature, which either forces a closing element into a valve seat or lifts the closing element from the valve seat depending on the direction in which the valve armature is driven. The valve armature and the static component are each formed as plastic components. The valve armature has a magnet receptacle that receives a permanent magnet, which is polarized in terms of its movement direction such that the permanent magnet is arranged within the magnet assembly regardless of the armature stroke.Type: GrantFiled: May 24, 2018Date of Patent: September 29, 2020Assignee: Robert Bosch GmbHInventors: Edgar Kurz, Massimiliano Ambrosi, Michael Eisenlauer, Wolf Stahr, Wolfgang Schuller
-
Publication number: 20200262410Abstract: A bistable solenoid valve for a hydraulic brake system has a guide sleeve in which an upper immovable pole core is fixedly arranged and a closing element is displaceably arranged. The closing element is forced into a valve seat during a closing movement and lifts off from the valve seat during an opening movement, and is fixedly connected to a magnet assembly. An actuation of the movement of the closing element is performed by the magnet assembly via a coil positioned around and substantially surrounding the guide sleeve. A lower immovable pole core is fixedly arranged in the guide sleeve and the magnet assembly is positioned between the lower and the upper pole core.Type: ApplicationFiled: June 11, 2018Publication date: August 20, 2020Inventors: Massimiliano Ambrosi, Edgar Kurz, Wolf Stahr, Wolfgang Schuller, Klaus Landesfeind, Michael Eisenlauer
-
Publication number: 20200238966Abstract: A bistable solenoid valve for a hydraulic braking system includes a magnetic assembly and a guide sleeve in which a pole core is fixedly arranged and in which a valve armature is arranged for axial movement. The valve armature has a permanent magnet that is polarized in a direction of motion thereof. The magnetic assembly is slid onto the pole core and the guide sleeve, and the pole core forms an axial stop for the valve armature. The permanent magnet is injected or mounted in a magnet receptacle at an end face of the valve armature facing the pole core. The valve armature is configured to be driven by a magnetic force of the magnetic assembly and/or the permanent magnet so as to force a closing element into a valve seat during a closing motion and to lift the closing element out of the valve seat during an opening motion.Type: ApplicationFiled: April 5, 2018Publication date: July 30, 2020Inventors: Massimiliano Ambrosi, Edgar Kurz, Wolf Stahr, Wolfgang Schuller, Michael Eisenlauer
-
Publication number: 20200055509Abstract: A bistable solenoid valve for a hydraulic braking system includes a magnetic assembly, a guide sleeve, a stationary component fixedly arranged in the guide sleeve, and a valve armature axially movably arranged in the guide sleeve. The valve armature includes a permanent magnet that is polarized in the direction of motion thereof. The magnetic assembly is slid onto the stationary component and the guide sleeve, and the stationary component forms an axial stop for the valve armature. The valve armature is configured to be driven by a magnetic force from the magnetic assembly or from the permanent magnet so as to force a closing element into a valve seat during a closing motion and lift the closing element out of the valve seat during an opening motion. The valve armature has a magnet receptacle that holds the permanent magnet. A hydraulic braking system includes the bistable solenoid valve.Type: ApplicationFiled: April 5, 2018Publication date: February 20, 2020Inventors: Wolf Stahr, Klaus Landesfeind, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Wolfgang Schuller
-
Publication number: 20190217840Abstract: In a solenoid valve for a hydraulic braking system, a mechanical locking device is formed between a guide assembly and a valve armature or tappet. The mechanical locking device releases the valve armature or the tappet in a currentless closed position such that the restoring spring drives the valve armature and presses the closing element into the valve seat to seal and fastens the valve armature or the tappet in a currentless open position against the force of the restoring spring in an axial locking position such that the closing element lifts from the valve seat. The valve armature includes a main-stage armature having a first surface to which pressure is applied and a preliminary-stage armature having a smaller, second surface to which pressure is applied. The preliminary-stage armature is mounted axially movably in the main-stage armature and interacts with a preliminary-stage seat by means of a preliminary-stage closing element.Type: ApplicationFiled: September 20, 2017Publication date: July 18, 2019Inventors: Wolf Stahr, Pascal Godbillon, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Dietmar Kratzer
-
Publication number: 20190210582Abstract: In a solenoid valve for a hydraulic braking system, a valve body has a receiving region which at least partially accommodates a guide assembly, the valve armature running axially through at least one through-opening of the guide assembly. A mechanical detent device is formed between the guide assembly and the valve armature, the detent device releasing the valve armature when the latter is in a de-energised closed position, such that the restoring spring drives the valve armature and pushes the closing element sealingly into the valve seat to produce a sealing function, and said detent device fixes the valve armature in a de-energised open position against the force of the restoring spring in an axial detent position, such that the closing element is raised from the valve seat.Type: ApplicationFiled: September 20, 2017Publication date: July 11, 2019Inventors: Wolf Stahr, Massimiliano Ambrosi, Michael Eisenlauer, Edgar Kurz, Dietmar Kratzer
-
Publication number: 20180340625Abstract: An adjustable magnetic valve includes a magnet assembly and a guide sleeve in which a static component is arranged fixedly and a valve armature is arranged so as to be axially displaceable therein. The magnet assembly is pushed onto the static component and the guide sleeve. The static component forms an axial stop for the valve armature, which either forces a closing element into a valve seat or lifts the closing element from the valve seat depending on the direction in which the valve armature is driven. The valve armature and the static component are each formed as plastic components. The valve armature has a magnet receptacle that receives a permanent magnet, which is polarized in terms of its movement direction such that the permanent magnet is arranged within the magnet assembly regardless of the armature stroke.Type: ApplicationFiled: May 24, 2018Publication date: November 29, 2018Inventors: Edgar Kurz, Massimiliano Ambrosi, Michael Eisenlauer, Wolf Stahr, Wolfgang Schuller
-
Patent number: 9745938Abstract: An injector system which is in particular used as an injector block for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines includes a fuel distribution rail, a counter bracket, a first injector, and at least one second injector. Here, the counter bracket has a first connecting piece and a second connecting piece. The first injector is joined to the counter bracket on an input side of the first connecting piece with the aid of an elastic sealing ring. The second injector is joined to the counter bracket on an input side of the second connecting piece with the aid of an elastic sealing ring. In this case, the counter bracket is connected to the fuel distribution rail. The fuel distribution rail is used for distributing compressed natural gas to the injectors. The injector system has a compact design.Type: GrantFiled: November 4, 2011Date of Patent: August 29, 2017Assignee: ROBERT BOSCH GMBHInventors: Wolf Stahr, Martin Haug, Horst Kirschner, Frank Miller
-
Publication number: 20170175735Abstract: An internal gear pump for a hydraulic vehicle brake system includes a bearing ring and a ring gear. The bearing ring is open at one point of a periphery of the ring. The opening is configured to slip-mount the ring gear with the internal gear pump. The bearing ring is formed from a bent sheet metal strip.Type: ApplicationFiled: December 13, 2016Publication date: June 22, 2017Inventors: Edgar Kurz, Massimiliano Ambrosi, Michael Eisenlauer, Norbert Alaze, Wolf Stahr