Patents by Inventor Heiko Friederichs

Heiko Friederichs 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: 20210115792
    Abstract: The invention relates to a milling pick, in particular a round pick having a pick head and a pick tip, consisting of a hard material, wherein the pick tip has an attachment area, which is used to connect it to the pick head, wherein the pick tip has a concave area, which extends in the direction of the central longitudinal axis of the pick tip, and wherein the concave area has an elliptical contour. To achieve an improved resilience for such a milling pick, provision in made in accordance with the invention that the ellipse generating the elliptical contour is arranged in such a way that the semimajor of the ellipse and the central longitudinal axis of the pick tip form an acute angle.
    Type: Application
    Filed: March 19, 2019
    Publication date: April 22, 2021
    Inventors: Heiko Friederichs, Ulrich Krämer
  • Publication number: 20210095564
    Abstract: The invention relates to a milling pick, in particular a round pick having a pick head (40), which has a pick tip (30) made of a hard material as a cutting element, wherein furthermore a pick shank (10) is provided, which is coupled directly or indirectly to the pick head (40), wherein a wear-protection disk (20) is provided, the cut-out of which, in particular a drilled hole, is pushed onto the pick shank (10), wherein the wear-protection disk (20) has, on its side facing the pick head (40), a counterface (23), which is designed to come into contact with a bearing surface (41) of the pick head (40), wherein the wear protection disk has, facing away from the counterface (23), an underside support surface (21), which is preferably parallel to the counterface (23), and wherein a disk thickness (d) is formed between the counterface (23) and the support surface (21), is characterized in that the ratio of the diameter of the pick shank (10) located in the area of the cut-out (25) to the thickness of the disk (d)
    Type: Application
    Filed: March 19, 2019
    Publication date: April 1, 2021
    Inventors: Heiko Friederichs, Ulrich Krämer
  • Publication number: 20200378254
    Abstract: A round-shank pick having a pick head and a pick shank that includes a supporting element pierced along its longitudinal center axis by a mounting hole with an inside diameter for receiving the pick shank. A collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, is configured such that the ratio between the inside diameter of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder.
    Type: Application
    Filed: July 30, 2020
    Publication date: December 3, 2020
    Inventors: Ulrich Kraemer, Heiko Friederichs
  • Patent number: 10801322
    Abstract: The invention relates to a cutting device for an earth working machine, having improved wear protection.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 13, 2020
    Assignees: Betek GmbH & Co. KG, Wirtgen GmbH
    Inventors: Thomas Allgaier, Ulrich Krämer, Heiko Friederichs, Thomas Lehnert, Karsten Buhr, Cyrus Barimani
  • Patent number: 10738610
    Abstract: A round-shank pick having a pick head and a pick shank that includes a supporting element pierced along its longitudinal center axis by a mounting hole with an inside diameter for receiving the pick shank. A collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, is configured such that the ratio between the inside diameter of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: August 11, 2020
    Assignee: Betek GmbH & Co. KG
    Inventors: Ulrich Kraemer, Heiko Friederichs
  • Patent number: 10662770
    Abstract: The present invention relates to a pick, in particular, a round shaft pick, having a pick head and a pick shaft, having a support element which has a centering lug on the underside thereof, wherein the centering lug has a centering surface which extends inclined with respect to the central longitudinal axis of the pick and merges into a seat surface. To this end circumferential channel according to the present invention is disposed in the transition region from the centering surface to the seat surface and the depth of the channel relative to the seat surface is greater than or equal to 0.3 mm. The pick has an optimised rotatability and thus a low wear.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: May 26, 2020
    Assignee: Betek GmbH & Co. KG
    Inventors: Karl Kammerer, Heiko Friederichs
  • Patent number: 10563363
    Abstract: The invention relates to a scraper bar (20) for a scraper blade (68) of a road milling machine, having a carrier (10) that comprises a front side and a rearward installation surface (17), the carrier (10) comprising a cutting-element receptacle (13), cutting elements (30) being held, serially arranged along a longitudinal axis (L) extending in a width direction of the carrier (10), on or in the cutting-element receptacle (13), and the cutting elements (30) comprising a cutting edge (35.1) that transitions indirectly or directly into a rake surface (35). In order to improve the working result, provision is made according to the present invention that at least for some of the cutting elements (30), the cutting edge (35.1) is set at least locally not parallel to the longitudinal axis (L).
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: February 18, 2020
    Assignees: Wirtgen GmbH, Betek GmbH & Co. KG
    Inventors: Cyrus Barimani, Thomas Lehnert, Andreas Salz, Heiko Friederichs, Andreas Rapp, Simon Krämer, Ulrich Krämer
  • Patent number: 10415385
    Abstract: A round-shank pick, comprising a pick head and a pick shank, the pick head including a base part and a cutting element, which is connected to the base part and is composed of a hard material, in particular hard metal, wherein the base part has a wear-resistant layer on the outer surface thereof at the connection to the cutting element, which wear-resistant layer covers at least one segment of the outer surface of the base part facing the cutting element and wherein an end face of the wear-resistant layer facing the cutting element is covered by the cutting element. The base part has an axially oriented cut-out for receiving a fastening segment of the cutting element, the base part has a counter surface facing the cutting element and extending around the cut-out, and the counter surface and the end face of the wear-resistant layer form a continuous flat surface.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: September 17, 2019
    Assignee: Betek GmbH & Co. KG
    Inventors: Ulrich Kraemer, Heiko Friederichs, Christoph Haberstroh, Thomas Allgaier
  • Publication number: 20190195069
    Abstract: The present invention relates to a pick, in particular, a round shaft pick, having a pick head and a pick shaft, having a support element which has a centering lug on the underside thereof, wherein the centering lug has a centering surface which extends inclined with respect to the central longitudinal axis of the pick and merges into a seat surface. To this end circumferential channel according to the present invention is disposed in the transition region from the centering surface to the seat surface and the depth of the channel relative to the seat surface is greater than or equal to 0.3 mm. The pick has an optimised rotatability and thus a low wear.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Applicant: Betek GmbH & Co. KG
    Inventors: Karl KAMMERER, Heiko FRIEDERICHS
  • Patent number: 10260341
    Abstract: The present invention relates to a pick, in particular, a round shaft pick, having a pick head and a pick shaft, having a support element which has a centring lug on the underside thereof, wherein the centring lug has a centring surface which extends inclined with respect to the central longitudinal axis of the pick and merges into a seat surface. To this end circumferential channel according to the present invention is disposed in the transition region from the centring surface to the seat surface and the depth of the channel relative to the seat surface is greater than or equal to 0.3 mm. The pick has an optimised rotatability and thus a low wear.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: April 16, 2019
    Assignee: Betek GmbH & Co. KG
    Inventors: Karl Kammerer, Heiko Friederichs
  • Patent number: 10227870
    Abstract: The invention relates to a chisel (10) having a chisel head (11) and a chisel shaft (17), wherein near its end facing away from the chisel head the chisel shaft has a threaded portion having a thread (19), wherein the chisel head holds a chisel tip (20) made of a hard material, and wherein near the side facing the chisel shaft the chisel head is provided with a supporting surface (15). Especially when superhard hard materials are used for the chisel tip, a load-optimized chisel design is obtained by a domed supporting surface (15).
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: March 12, 2019
    Assignees: Betek GmbH & Co. KG, Wirtgen GmbH
    Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Heiko Friederichs, Karl Kammerer, Markus Roth
  • Patent number: 10046479
    Abstract: A chisel holder for a ground processing machine includes a base portion including a chisel receiver and a holder receiver. The chisel receiver includes a chisel introduction region for receiving a threaded shaft of a chisel. The holder receiver is configured to receive an internally threaded nut. The holder receiver includes at least one retention face configured to secure the nut against rotation at a peripheral side or the nut.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: August 14, 2018
    Assignees: Wirtgen GmbH, Betek GmbH & Co. KG
    Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Heiko Friederichs, Karl Kammerer, Markus Roth
  • Publication number: 20180073359
    Abstract: A round-shank pick having a pick head and a pick shank that includes a supporting element pierced along its longitudinal center axis by a mounting hole with an inside diameter for receiving the pick shank. A collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, is configured such that the ratio between the inside diameter of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Applicant: Betek GmbH & Co. KG
    Inventors: Ulrich KRAEMER, Heiko FRIEDERICHS
  • Patent number: D841063
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 19, 2019
    Assignee: BETEK GMBH & CO. KG
    Inventor: Heiko Friederichs
  • Patent number: D893869
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: August 25, 2020
    Assignee: Betek GmbH & Co. KG
    Inventors: Simon Krämer, Heiko Friederichs
  • Patent number: D894599
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: September 1, 2020
    Assignee: Betek GmbH & Co. KG
    Inventors: Simon Krämer, Heiko Friederichs
  • Patent number: D918973
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: May 11, 2021
    Inventor: Heiko Friederichs
  • Patent number: D927567
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: August 10, 2021
    Inventor: Heiko Friederichs
  • Patent number: D927568
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: August 10, 2021
    Inventor: Heiko Friederichs
  • Patent number: D927569
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: August 10, 2021
    Inventor: Heiko Friederichs