Patents by Inventor Stephan Kaske
Stephan Kaske 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: 11901704Abstract: A batch of spark plugs. Each spark plug has a longitudinal axis, a central electrode oriented in the direction of the longitudinal axis, a ground electrode oriented at an angle to the longitudinal axis, such that a spark gap is formed between a tip of the central electrode and a tip of the ground electrode, and an outer thread for screwing the spark plug in the longitudinal direction into an inner thread of a cylinder head of a combustion chamber of an internal combustion engine, and has an annular contact surface oriented perpendicularly to the longitudinal axis and intended for bringing the spark plug to rest against the cylinder head. After the spark plugs have been screwed into the inner thread of the cylinder head, the ground electrodes have the same orientation with regard to a rotation about the longitudinal axis of the spark plug relative to the combustion chamber.Type: GrantFiled: July 13, 2021Date of Patent: February 13, 2024Assignee: ROBERT BOSCH GMBHInventors: Matthias Blankmeister, Matthias Budde, Stephan Kaske, Ugur Yilmaz, Ulrich Stockmeier, Philipp Rottmann
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Patent number: 11876351Abstract: A prechamber spark plug, including center and ground electrodes, a housing having an external thread, a cap arranged on the housing and together with the housing defines a prechamber, and an insulator which electrically insulates the center electrode from the housing. The external thread has a thread length in the axial direction. The housing is fastened to the insulator at first and second fixing regions so that a first clamping force at the first fixing region acts from the housing on the insulator, and a second clamping force at the second fixing region acts from the housing on the insulator. The first and second clamping forces are directed in opposite directions to one another in the axial direction. A distance between the first and second fixing regions in the axial direction defines a clamping length. A ratio between the thread length and the clamping length is between 0.7 to 1.3.Type: GrantFiled: December 1, 2021Date of Patent: January 16, 2024Assignee: ROBERT BOSCH GMBHInventors: Bernd Mueller, Matthias Blankmeister, Stephan Kaske, Thomas Steidten, Ugur Yilmaz
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Publication number: 20230378723Abstract: A prechamber spark plug, including center and ground electrodes, a housing having an external thread, a cap arranged on the housing and together with the housing defines a prechamber, and an insulator which electrically insulates the center electrode from the housing. The external thread has a thread length in the axial direction. The housing is fastened to the insulator at first and second fixing regions so that a first clamping force at the first fixing region acts from the housing on the insulator, and a second clamping force at the second fixing region acts from the housing on the insulator. The first and second clamping forces are directed in opposite directions to one another in the axial direction. A distance between the first and second fixing regions in the axial direction defines a clamping length. A ratio between the thread length and the clamping length is between 0.7 to 1.3.Type: ApplicationFiled: December 1, 2021Publication date: November 23, 2023Inventors: Bernd Mueller, Matthias Blankmeister, Stephan Kaske, Thomas Steidten, Ugur Yilmaz
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Publication number: 20230318264Abstract: A pre-chamber spark plug includes (i) a middle electrode with a first noble metal body which has a first end spark face, (ii) a ground electrode with a second noble metal body which has a second end spark face, (iii) a housing, with the ground electrode being fixed in the housing, (iv) an insulator which electrically insulates the middle electrode with respect to the ground electrode, and (v) a cap, which together with a part of the housing, defines a pre-chamber. The first end spark face and the second end spark face are arranged oppositely at a distance from one another.Type: ApplicationFiled: July 13, 2021Publication date: October 5, 2023Inventors: Stephan Kaske, Alexander Schramm, Andreas Benz, Matthias Blankmeister, Anatolij Odegov
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Patent number: 11728626Abstract: A method for manufacturing a prechamber spark plug including an external thread and a cap including at least one through-opening. The method includes: providing the prechamber spark plug without a cap and including a cylindrical circumferential surface for the external thread. Mounting the cap, which includes at least one through-opening, in an arbitrary alignment at the prechamber spark plug, and creating the external thread at the circumferential surface in such a way that a thread start and/or a thread end of the external thread is aligned in relation to the through-opening at a predetermined position.Type: GrantFiled: September 28, 2020Date of Patent: August 15, 2023Assignee: ROBERT BOSCH GMBHInventors: Matthias Budde, Matthias Blankmeister, Philipp Rottmann, Stephan Kaske, Ugur Yilmaz
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Publication number: 20230235695Abstract: A prechamber spark plug. The spark plug includes a housing, a cap, which defines a prechamber at least partially, and which includes a plurality of through holes that are configured to produce a connection between the prechamber and a combustion chamber of an internal combustion engine; the through holes each having a hole center line; the cap including a recess at a region pointed towards the housing, the recess abutting the housing at a combustion-chamber-side end of the housing; a distance from an exit point of a through hole lying on the hole center line, to a recess, being in a range of 2 mm to 7 mm; and a first angle between a center axis of the prechamber spark plug and the hole center line being in a range of 30° to 70°. An internal combustion engine including such a prechamber spark plug is also described.Type: ApplicationFiled: June 23, 2021Publication date: July 27, 2023Inventors: Matthias Blankmeister, Stephan Kaske, Thomas Steidten
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Publication number: 20230187909Abstract: A batch of spark plugs. Each spark plug has a longitudinal axis, a central electrode oriented in the direction of the longitudinal axis, a ground electrode oriented at an angle to the longitudinal axis, such that a spark gap is formed between a tip of the central electrode and a tip of the ground electrode, and an outer thread for screwing the spark plug in the longitudinal direction into an inner thread of a cylinder head of a combustion chamber of an internal combustion engine, and has an annular contact surface oriented perpendicularly to the longitudinal axis and intended for bringing the spark plug to rest against the cylinder head. After the spark plugs have been screwed into the inner thread of the cylinder head, the ground electrodes have the same orientation with regard to a rotation about the longitudinal axis of the spark plug relative to the combustion chamber.Type: ApplicationFiled: July 13, 2021Publication date: June 15, 2023Inventors: Matthias Blankmeister, Matthias Budde, Stephan Kaske, Ugur Yilmaz, Ulrich Stockmeier, Philipp Rottmann
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Patent number: 11600971Abstract: A prechamber spark plug. The prechamber spark plug includes: a housing, and a cap which has at least one pass-through opening, the cap being situated at a combustion chamber-side end of the housing. The cap and the housing form a prechamber. An outer cap surface area of the cap, which faces away from the prechamber, has at least one predefined ratio to respectively one further geometric feature of the cap.Type: GrantFiled: March 25, 2020Date of Patent: March 7, 2023Assignee: ROBERT BOSCH GMBHInventors: Bernd Mueller, Stephan Kaske, Thomas Steidten, Ugur Yilmaz
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Publication number: 20230040766Abstract: A prechamber spark plug. The prechamber spark plug includes a housing and a cap, which is arranged at a combustion-chamber end of the prechamber spark plug. The cap has, on the combustion-chamber side, a recess in an outer side.Type: ApplicationFiled: December 9, 2020Publication date: February 9, 2023Inventors: Stephan Kaske, Ugur Yilmaz
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Publication number: 20220376480Abstract: A method for manufacturing a prechamber spark plug including an external thread and a cap including at least one through-opening. The method includes: providing the prechamber spark plug without a cap and including a cylindrical circumferential surface for the external thread. Mounting the cap, which includes at least one through-opening, in an arbitrary alignment at the prechamber spark plug, and creating the external thread at the circumferential surface in such a way that a thread start and/or a thread end of the external thread is aligned in relation to the through-opening at a predetermined position.Type: ApplicationFiled: September 28, 2020Publication date: November 24, 2022Inventors: Matthias Budde, Matthias Blankmeister, Philipp Rottmann, Stephan Kaske, Ugur Yilmaz
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Patent number: 11394178Abstract: A spark plug including a housing, an insulator, a center electrode, and a ground electrode situated at a combustion chamber-side end of the housing. The insulator has an insulator collar, an insulator base, and a transition area, which rests on a projection of the housing. A breathing space is configured at the combustion chamber-side end of the spark plug and is delimited by a section of the inner side of the housing and a section of the insulator base. The section of the insulator base has a rounding including a first leg length and a second leg length angled with respect to the first leg length, the first leg length extending between the intersecting point of the leg lengths with one another and a first end point of the rounding, and the second leg length extending between the intersecting point and a second end point of the rounding.Type: GrantFiled: December 10, 2019Date of Patent: July 19, 2022Assignee: Robert Bosch GmbHInventors: Felix Traub, Matthias Blankmeister, Sergej Subkow, Stephan Kaske
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Publication number: 20220181853Abstract: A prechamber spark plug. The prechamber spark plug includes: a housing, and a cap which has at least one pass-through opening, the cap being situated at a combustion chamber-side end of the housing. The cap and the housing form a prechamber. An outer cap surface area of the cap, which faces away from the prechamber, has at least one predefined ratio to respectively one further geometric feature of the cap.Type: ApplicationFiled: March 25, 2020Publication date: June 9, 2022Inventors: Bernd Mueller, Stephan Kaske, Thomas Steidten, Ugur Yilmaz
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Publication number: 20220085578Abstract: A spark plug including a housing, an insulator, a center electrode, and a ground electrode situated at a combustion chamber-side end of the housing. The insulator has an insulator collar, an insulator base, and a transition area, which rests on a projection of the housing. A breathing space is configured at the combustion chamber-side end of the spark plug and is delimited by a section of the inner side of the housing and a section of the insulator base. The section of the insulator base has a rounding including a first leg length and a second leg length angled with respect to the first leg length, the first leg length extending between the intersecting point of the leg lengths with one another and a first end point of the rounding, and the second leg length extending between the intersecting point and a second end point of the rounding.Type: ApplicationFiled: December 10, 2019Publication date: March 17, 2022Inventors: Felix Traub, Matthias Blankmeister, Sergej Subkow, Stephan Kaske
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Publication number: 20110193434Abstract: A starting device having a drive-end bracket, in which a bearing is fastened, having a drive shaft, the bearing in the bearing bracket at least indirectly supporting the drive shaft, having a starter pinion which is fastened on the drive shaft so that a torque is able to be transferred from the drive shaft to the starter pinion, the starter pinion having an end face and a retaining ring being situated on the drive shaft in a fixed manner, at the end face, the starter pinion having a recess in which a retaining element is situated, which prevents the retaining ring from spreading inadmissibly.Type: ApplicationFiled: November 27, 2008Publication date: August 11, 2011Inventors: Stephan Kaske, Roman Pirsch, Walter Gerschwitz, Gerlinde Gerschwitz