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).

  • Publication number: 20250229342
    Abstract: 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: Application
    Filed: January 8, 2025
    Publication date: July 17, 2025
    Inventors: Christian Strauchmann, Herbert Rudolf Kauper, Jürgen Schwägerl, Peter Sollfrank
  • Publication number: 20250229343
    Abstract: 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: Application
    Filed: January 9, 2025
    Publication date: July 17, 2025
    Inventors: Christian Strauchmann, Herbert Rudolf Kauper, Jürgen Schwägerl
  • Publication number: 20250018480
    Abstract: 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: Application
    Filed: July 12, 2023
    Publication date: January 16, 2025
    Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann
  • Patent number: 12151293
    Abstract: 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: Grant
    Filed: March 13, 2020
    Date of Patent: November 26, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Marcus Paul, Bernhard Eckl, Herbert Rudolf Kauper
  • Patent number: 12064819
    Abstract: 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: Grant
    Filed: March 21, 2023
    Date of Patent: August 20, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Juergen Schwaegerl
  • Publication number: 20240066611
    Abstract: 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: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Applicant: Kennametal Inc.
    Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
  • Patent number: 11858053
    Abstract: 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: Grant
    Filed: September 24, 2020
    Date of Patent: January 2, 2024
    Assignee: KENNAMETAL INC.
    Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
  • Patent number: 11819931
    Abstract: 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: Grant
    Filed: March 25, 2021
    Date of Patent: November 21, 2023
    Assignee: KENNAMETAL INC.
    Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann
  • Patent number: 11707791
    Abstract: 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: Grant
    Filed: August 7, 2020
    Date of Patent: July 25, 2023
    Assignee: KENNAMETAL INC.
    Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Jürgen Schwägerl
  • Publication number: 20230226620
    Abstract: 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: Application
    Filed: January 18, 2023
    Publication date: July 20, 2023
    Inventor: Herbert Rudolf KAUPER
  • Publication number: 20230219147
    Abstract: 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: Application
    Filed: March 21, 2023
    Publication date: July 13, 2023
    Applicant: Kennametal Inc.
    Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Juergen Schwaegerl
  • Patent number: 11654465
    Abstract: 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: Grant
    Filed: February 26, 2019
    Date of Patent: May 23, 2023
    Assignee: Kennametal Inc.
    Inventors: Raouf Ben Amor, Augustin Donhardt, Tim Guter, Bjoern Hoschke, Guenther Hoyer, Herbert Rudolf Kauper, Klaus Roediger, Fabian Rosenberger, Jürgen Schwägerl
  • Patent number: 11435002
    Abstract: 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: Grant
    Filed: April 30, 2021
    Date of Patent: September 6, 2022
    Assignees: Bürkert Werke GmbH & Co. KG, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Herbert Rudolf Shea, Fabio Beco Albuquerque
  • Publication number: 20220184717
    Abstract: 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: Application
    Filed: March 13, 2020
    Publication date: June 16, 2022
    Inventors: Marcus PAUL, Bernhard ECKL, Herbert Rudolf KAUPER
  • Patent number: 11229958
    Abstract: 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: Grant
    Filed: April 9, 2020
    Date of Patent: January 25, 2022
    Assignee: KENNAMETAL INC.
    Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl
  • Publication number: 20210354210
    Abstract: 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: Application
    Filed: May 7, 2021
    Publication date: November 18, 2021
    Inventors: Jürgen Schwägerl, Herbert Rudolf Kauper
  • Publication number: 20210299763
    Abstract: 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: Application
    Filed: March 25, 2021
    Publication date: September 30, 2021
    Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann
  • Publication number: 20210213543
    Abstract: 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: Application
    Filed: July 18, 2019
    Publication date: July 15, 2021
    Inventors: Herbert Rudolf Kauper, Jürgen Schwägerl, Christian Strauchmann, Julia Tempelmeier
  • Publication number: 20210094106
    Abstract: 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: Application
    Filed: September 24, 2020
    Publication date: April 1, 2021
    Inventors: Christian Strauchmann, Jürgen Schwägerl, Herbert Rudolf Kauper
  • Publication number: 20210039176
    Abstract: 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: Application
    Filed: August 7, 2020
    Publication date: February 11, 2021
    Inventors: Herbert Rudolf Kauper, Christian Strauchmann, Jürgen Schwägerl