Patents by Inventor Herbert Rudolf
Herbert Rudolf 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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Publication number: 20250229342Abstract: The drill extends along an axis of rotation and comprises at least three main cutting surfaces which, starting from a cutting corner arranged on a radius (r), each extend in the direction of the axis of rotation. The at least three main cutting surfaces converge on a pointed drill tip, in particular without the presence of transverse cutting surfaces. Starting from the drill tip and over the entire radial extent thereof, each main cutting surface adjoins an edge-free surface, which comprises a clearance surface and in each case transitions into a respective flute.Type: ApplicationFiled: January 8, 2025Publication date: July 17, 2025Inventors: Christian Strauchmann, Herbert Rudolf Kauper, Jürgen Schwägerl, Peter Sollfrank
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Publication number: 20250229343Abstract: The drill extends along an axis of rotation and has a radius (r) as well as a plurality of main cutting surfaces, which each extend in the direction of the axis of rotation from a cutting corner situated on the radius (r), wherein a respective clearance surface adjoins the main cutting surfaces in a circumferential direction (U), forms a clearance angle (?, ?1, ?2) with respect to a horizontal plane (H) oriented perpendicular to an axis of rotation, and transitions along its further progression into a flute. When viewed in a vertical section parallel to the axis of rotation, an outer section of the clearance surface in the region of the cutting corner has a curved progression, and a near-center section in the region of the axis of rotation has a linear progression. A low frictional load on the front face of the drill is achieved as a result.Type: ApplicationFiled: January 9, 2025Publication date: July 17, 2025Inventors: Christian Strauchmann, Herbert Rudolf Kauper, Jürgen Schwägerl
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Publication number: 20250018480Abstract: A rotary tool (2) is provided, comprising: a main blade (4), a chip flute (6), a lateral surface (8), a flank (10) trailing the main blade (4) and extending from the main blade (4) up to the lateral surface (8) and to the chip flute (6), wherein the flank (10) comprises a kink (12) and is thus concave in configuration, wherein the kink (12) extends from the lateral surface (8) up to the chip flute (6) and thus divides the flank (10) into a leading partial surface (14) and a trailing partial surface (16). The invention further relates to a method for manufacturing such a rotary tool (2).Type: ApplicationFiled: July 12, 2023Publication date: January 16, 2025Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann
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Patent number: 12151293Abstract: The combination tool (2), in particular a drilling/chamfering tool, comprises a drill (6) extending in the longitudinal direction (4) with a clamping sleeve (8), which is designed to receive the drill (6) and fasten the drill (6) at a variable length and which has a holding seat (38) for a cutting insert (12). The drill (6) comprises a cutting region (22) provided with grooves (14), wherein the grooves (14) extend helically and are formed between two grooves (14) drill backs (18). At least one of the drill backs (18) is partially flattened to form an adjustment surface (16) for the cutting insert (12), wherein the adjustment surface (16) extends helically. As a result, a length adjustment over a large length range is made possible independently of the twist angle (?).Type: GrantFiled: March 13, 2020Date of Patent: November 26, 2024Assignee: KENNAMETAL INC.Inventors: Marcus Paul, Bernhard Eckl, Herbert Rudolf Kauper
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Patent number: 12064819Abstract: The invention relates to a drill comprising a body which extends along a longitudinal axis (L) from a rear side (B) to a front side (F), wherein the body comprises a main cutting edge on the front side (F), wherein the body comprises at least one guide bevel which extends in axial direction (A) and toward the front side (F), wherein, toward the front side (F), the guide bevel has an end section which is tapered. The invention further relates to a method for producing such a drill.Type: GrantFiled: March 21, 2023Date of Patent: August 20, 2024Assignee: KENNAMETAL INC.Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Juergen Schwaegerl
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Publication number: 20240066611Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface, wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.Type: ApplicationFiled: November 8, 2023Publication date: February 29, 2024Applicant: Kennametal Inc.Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
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Patent number: 11858053Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface (24), wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.Type: GrantFiled: September 24, 2020Date of Patent: January 2, 2024Assignee: KENNAMETAL INC.Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
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Patent number: 11819931Abstract: The invention relates to a drill comprising a drill tip, wherein the drill tip comprises at least one main cutting edge having a cutting corner, from which the main cutting edge extends to a center, wherein the drill tip comprises at least one additional cutting edge having an additional cutting corner, from which the additional cutting edge extends in the direction of the center, wherein the additional cutting edge is formed only on an outer portion of the drill tip and is thus shorter than the main cutting edge, wherein the additional cutting corner projects beyond the cutting corner.Type: GrantFiled: March 25, 2021Date of Patent: November 21, 2023Assignee: KENNAMETAL INC.Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann
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Patent number: 11707791Abstract: The invention relates to a drill comprising a body which extends along a longitudinal axis (L) from a rear side (B) to a front side (F), wherein the body comprises a main cutting edge on the front side (F), wherein the body comprises at least one guide bevel which extends in axial direction (A) and toward the front side (F), wherein, toward the front side (F), the guide bevel has an end section which is tapered. The invention further relates to a method for producing such a drill.Type: GrantFiled: August 7, 2020Date of Patent: July 25, 2023Assignee: KENNAMETAL INC.Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Jürgen Schwägerl
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Publication number: 20230226620Abstract: A drill has at least one main cutting edge (22) and a helical flute (20) abutting the main cutting edge (22). The surface of the flute (20) has a spiral segment (28) and an edge segment (30) abutting the main cutting edge (22). The roughness of the edge segment (30) is less than the roughness of the spiral segment (28). Furthermore, a method for producing a drill is provided.Type: ApplicationFiled: January 18, 2023Publication date: July 20, 2023Inventor: Herbert Rudolf KAUPER
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Publication number: 20230219147Abstract: The invention relates to a drill comprising a body which extends along a longitudinal axis (L) from a rear side (B) to a front side (F), wherein the body comprises a main cutting edge on the front side (F), wherein the body comprises at least one guide bevel which extends in axial direction (A) and toward the front side (F), wherein, toward the front side (F), the guide bevel has an end section which is tapered. The invention further relates to a method for producing such a drill.Type: ApplicationFiled: March 21, 2023Publication date: July 13, 2023Applicant: Kennametal Inc.Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Juergen Schwaegerl
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Patent number: 11654465Abstract: The invention relates to a method for producing a blank, in particular a blank for the production of a cutting tool, wherein a green body extending in the direction of the extrusion axis is produced from extrusion material by means of an extruder which has an extrusion channel extending along an extrusion axis; wherein the extrusion channel together with a movable mold element forms a die of the extruder; and wherein the mold element is moved relative to the extrusion channel and within said extrusion channel during the extrusion of the green body, whereby the shaping geometry of the die is changed so that the completely extruded green body hereby has a first functional segment and a second functional segment adjacent thereto in the direction of the extrusion axis (4); wherein the two functional segments differ with regard to their geometries impressed by the die.Type: GrantFiled: February 26, 2019Date of Patent: May 23, 2023Assignee: Kennametal Inc.Inventors: Raouf Ben Amor, Augustin Donhardt, Tim Guter, Bjoern Hoschke, Guenther Hoyer, Herbert Rudolf Kauper, Klaus Roediger, Fabian Rosenberger, Jürgen Schwägerl
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Patent number: 11435002Abstract: An actuator (22) comprises at least one actuator body (32) of dielectric elastomeric material and two electrodes (34, 36) being attached to opposite surfaces of the actuator body (32), respectively. At least one of the actuator body (32) and at least one of the electrodes (34, 36) is at least partly covered at its outer side with a protective layer (38a, 38b) of polymer material, wherein a mechanical stiffness of the protective layer (38a, 38b) is at least three times lower than a mechanical stiffness of the actuator body (32). Moreover, a valve actuator unit comprises such an actuator (22) and a housing, wherein the actuator (22) is arranged within the housing and the remainder of the housing is filled with a gas. Additionally, a valve comprises such a valve actuator unit and a valve element, wherein the valve element is movable by the valve actuator unit.Type: GrantFiled: April 30, 2021Date of Patent: September 6, 2022Assignees: Bürkert Werke GmbH & Co. KG, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Herbert Rudolf Shea, Fabio Beco Albuquerque
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Publication number: 20220184717Abstract: The combination tool (2), in particular a drilling/chamfering tool, comprises a drill (6) extending in the longitudinal direction (4) with a clamping sleeve (8), which is designed to receive the drill (6) and fasten the drill (6) at a variable length and which has a holding seat (38) for a cutting insert (12). The drill (6) comprises a cutting region (22) provided with grooves (14), wherein the grooves (14) extend helically and are formed between two grooves (14) drill backs (18). At least one of the drill backs (18) is partially flattened to form an adjustment surface (16) for the cutting insert (12), wherein the adjustment surface (16) extends helically. As a result, a length adjustment over a large length range is made possible independently of the twist angle (?).Type: ApplicationFiled: March 13, 2020Publication date: June 16, 2022Inventors: Marcus PAUL, Bernhard ECKL, Herbert Rudolf KAUPER
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Patent number: 11229958Abstract: The invention relates to a step drill having a shaft section extending along a longitudinal axis of the step drill and a cutting section with a cutting tip, and having a chip-breaking geometry which comprises a concavely curved surface and is configured such that ribbon chips are broken on the concavely curved surface during rotation of the step drill, whereby the chip-breaking geometry is disposed on a reaming step of the step drill.Type: GrantFiled: April 9, 2020Date of Patent: January 25, 2022Assignee: KENNAMETAL INC.Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl
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Publication number: 20210354210Abstract: A cutting tool for machining workpieces is disclosed, which comprises a shank portion and a cutting portion, wherein a coolant channel extends along a longitudinal axis from a free end of the shank portion through the cutting tool, which has a peripheral wall and an end wall, wherein the coolant channel has one or more outlet openings in the end wall, through which coolant can exit the cutting tool. Also disclosed is a method for producing a cutting tool.Type: ApplicationFiled: May 7, 2021Publication date: November 18, 2021Inventors: Jürgen Schwägerl, Herbert Rudolf Kauper
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Publication number: 20210299763Abstract: The invention relates to a drill comprising a drill tip, wherein the drill tip comprises at least one main cutting edge having a cutting corner, from which the main cutting edge extends to a center, wherein the drill tip comprises at least one additional cutting edge having an additional cutting corner, from which the additional cutting edge extends in the direction of the center, wherein the additional cutting edge is formed only on an outer portion of the drill tip and is thus shorter than the main cutting edge, wherein the additional cutting corner projects beyond the cutting corner.Type: ApplicationFiled: March 25, 2021Publication date: September 30, 2021Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann
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Publication number: 20210213543Abstract: The invention relates to a drill tip (2), comprising a center (4), at which a chisel edge (6) is arranged, and comprising a main cutting edge (8), which adjoins the chisel edge (6) and runs outward from the center (4). A rake angle is formed along the chisel edge (6) and the main cutting edge (8). The main cutting edge (8) has an inner portion (10), which adjoins the chisel edge (6) and is arranged within the center (4). The main cutting edge (8) has an outer portion (12), which outwardly adjoins the inner portion (10) and is arranged outside of the center (4). A point thinning (16) is formed on the drill tip (2), which point thinning is curved in such a way that the inner portion (10) runs arcuately from an outer edge of the center (4) toward the chisel edge (6). The invention further relates to a method for producing a drill tip (2) of this type.Type: ApplicationFiled: July 18, 2019Publication date: July 15, 2021Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann, Julia Tempelmeier
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Publication number: 20210094106Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface (24), wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.Type: ApplicationFiled: September 24, 2020Publication date: April 1, 2021Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
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Publication number: 20210039176Abstract: The invention relates to a drill comprising a body which extends along a longitudinal axis (L) from a rear side (B) to a front side (F), wherein the body comprises a main cutting edge on the front side (F), wherein the body comprises at least one guide bevel which extends in axial direction (A) and toward the front side (F), wherein, toward the front side (F), the guide bevel has an end section which is tapered. The invention further relates to a method for producing such a drill.Type: ApplicationFiled: August 7, 2020Publication date: February 11, 2021Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Jürgen Schwägerl