Patents by Inventor Karl Kammerer

Karl Kammerer 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: 9163502
    Abstract: A chisel holder comprises a body zone (12) having a chisel receiving opening (18) that is open at least in the direction of a chisel insertion end (14) of the body zone (12), and also comprises a fastening shaft (26) which extends from a supporting end (20) of the body zone (12) and has a longitudinal shaft axis. A fastening member-affecting zone is provided on a first side of the fastening shaft (26), and a supporting zone (78) that has supporting surface regions (88, 90) which are inclined relative to each other and adjoin each other in a transition zone (92) extending in the direction of the longitudinal shaft axis is provided on a second side of the fastening shaft (26), said second side lying opposite the first side relative to the longitudinal shaft axis.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 20, 2015
    Assignee: WIRTGEN GMBH
    Inventors: Thomas Lehnert, Karsten Buhr, Martin Lenz, Cyrus Barimani, Günter Hähn, Karl Kammerer, Bernhard Diesner, Markus Roth
  • Patent number: 9151157
    Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the support member comprising two first and/or two second stripping surfaces that are at an angle to one another, and the support member having a working side that comprises a bit receptacle. In order to achieve a stable and long-lived configuration for such a bit holder, provision is made according to the present invention that the first and/or second stripping surfaces diverge from the insertion projection side toward the working side.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 6, 2015
    Assignee: Wirtgen GmbH
    Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
  • Publication number: 20140216824
    Abstract: A drill head including a tool holder, chisel supports mounted thereon and drill bits. According to this invention, the chisel supports can be separated from the tool holder.
    Type: Application
    Filed: June 28, 2012
    Publication date: August 7, 2014
    Inventors: Karl Kammerer, Wolfgang Essig
  • Publication number: 20130307318
    Abstract: The invention relates to a bit holder having an insertion projection and having a bore-shaped bit receptacle that has a longitudinal center axis, a convexly curved support surface being provided on a base part. A bit holder of this kind can be implemented in compact and stable fashion in particular by the fact that the longitudinal center axis of the bit receptacle intersects the support surface.
    Type: Application
    Filed: December 2, 2011
    Publication date: November 21, 2013
    Applicants: BETEK GmbH & Co. KG, WIRTGEN GmbH
    Inventors: Karl Kammerer, Markus Roth, Bernhard Diessner
  • Publication number: 20130241265
    Abstract: A chisel holder comprises a body zone (12) having a chisel receiving opening (18) that is open at least in the direction of a chisel insertion end (14) of the body zone (12), and also comprises a fastening shaft (26) which extends from a supporting end (20) of the body zone (12) and has a longitudinal shaft axis. A fastening member-affecting zone is provided on a first side of the fastening shaft (26), and a supporting zone (78) that has supporting surface regions (88, 90) which are inclined relative to each other and adjoin each other in a transition zone (92) extending in the direction of the longitudinal shaft axis is provided on a second side of the fastening shaft (26), said second side lying opposite the first side relative to the longitudinal shaft axis.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 19, 2013
    Inventors: Thomas Lehnert, Karsten Buhr, Martin Lenz, Cyrus Barimani, Gunter Hahn, Karl Kammerer, Bernhard Diesner, Markus Roth
  • Publication number: 20130241264
    Abstract: A chisel holder comprises a body zone (12) having a chisel receiving opening (18) that is open at least in the direction of a chisel insertion end (14) of the body zone (12), and also comprises a fastening shaft (26) which extends from a supporting end (20) of the body zone (12) and has a longitudinal shaft axis (LB), the body zone (12) having a first supporting surface region (22) at its supporting end (20). Said chisel holder is characterized in that the body zone (12) has a second supporting surface region (24) at its supporting end (20), said second surface region (24) extending at an angle from the first supporting surface region (22), or/and the first supporting surface region (22) comprises a first supporting surface (28) and a second supporting surface (30) extending at an angle from the first supporting surface (28).
    Type: Application
    Filed: December 2, 2011
    Publication date: September 19, 2013
    Applicant: WIRTGEN GMBH
    Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Gunter Hahn, Karl Kammerer, Bernhard Diesner, Markus Roth
  • Patent number: 7922256
    Abstract: A circular-shank tool including a shank held in a bore of a tool holder by a locking sleeve, the shank being rotatably held in the locking sleeve. The locking sleeve has one or more retaining elements that project inwards and engage in a peripheral groove in the shank of the tool, thus indisplaceably securing the locking sleeve in an axial direction on the shank of the tool. Because the locking sleeve is mirror-symmetrical to the central transversal plane, the locking sleeve can be fixed to the shank in a position that is rotated through 180°.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: April 12, 2011
    Assignee: Betek Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventors: Karl Kammerer, Bernhard Mossmann
  • Patent number: 7922257
    Abstract: A circular-shank tool including a tool holder for improving the centering of the shank of the circular-shank tool in the locking sleeve by a configuration of the retaining elements and to improve an ability of the shank to rotate in the sleeve. To achieve this, the retaining elements are distributed between two stamped edges that lie transversely with respect to a longitudinal axis of the locking sleeve and are stamped inwards or indented, the stamped edges extend over part of the circumference of the locking sleeve and are interspaced at a distance that corresponds to the width of the peripheral groove in the shank of the circular-shank tool and the retaining elements form a coaxial concave centering section facing the convex groove base of the peripheral groove.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: April 12, 2011
    Assignee: Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventor: Karl Kammerer
  • Publication number: 20090162159
    Abstract: A circular-shank tool including a shank held in a bore of a tool holder by a locking sleeve, the shank being rotatably held in the locking sleeve. The locking sleeve has one or more retaining elements that project inwards and engage in a peripheral groove in the shank of the tool, thus indisplaceably securing the locking sleeve in an axial direction on the shank of the tool. Because the locking sleeve is mirror-symmetrical to the central transversal plane, the locking sleeve can be fixed to the shank in a position that is rotated through 180°.
    Type: Application
    Filed: June 27, 2006
    Publication date: June 25, 2009
    Inventors: Karl Kammerer, Bernhard Mossmann
  • Publication number: 20090160237
    Abstract: A circular-shank tool including a tool holder for improving the centering of the shank of the circular-shank tool in the locking sleeve by a configuration of the retaining elements and to improve an ability of the shank to rotate in the sleeve. To achieve this, the retaining elements are distributed between two stamped edges that lie transversely with respect to a longitudinal axis of the locking sleeve and are stamped inwards or indented, the stamped edges extend over part of the circumference of the locking sleeve and are interspaced at a distance that corresponds to the width of the peripheral groove in the shank of the circular-shank tool and the retaining elements form a coaxial concave centering section facing the convex groove base of the peripheral groove.
    Type: Application
    Filed: June 27, 2006
    Publication date: June 25, 2009
    Inventor: Karl Kammerer
  • Patent number: 7416144
    Abstract: A percussion tool for comminuting materials, in particular wood waste materials, having a beater head and a shank, wherein a cutting insert with an upper cutting edge extending transversely with respect to the cutting direction is fastened on the beater head. If the cutting insert has at least one first cutting element and at least one second cutting element, and if a free space in the shape of the upper cutting edge is arranged on the beater head in the cutting direction behind the cutting insert, then the cutting elements are thus supported over a greatest possible surface and are connected with the beater head. It is thus possible to transfer greater forces into the beater head without it being broken off.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: August 26, 2008
    Assignee: BETEK-Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventors: Karl Kammerer, Willi Schillinger
  • Patent number: 7137583
    Abstract: A striking tool for comminuting materials, particularly waste wood, having a shank and a chisel head, wherein a cutting insert is fastened on the chisel head. For an extended service life, along with an improved comminuting output, the cutting insert has at least one first and at least one second cutting element and the first and second cutting elements are arranged one behind the other in the cutting direction.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: November 21, 2006
    Assignee: Betek Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventor: Karl Kammerer
  • Patent number: D572735
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: July 8, 2008
    Assignee: Betek Bergbau- und Hartmetalltechnik
    Inventor: Karl Kammerer
  • Patent number: D627808
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: November 23, 2010
    Assignee: BETEK Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventor: Karl Kammerer
  • Patent number: D627809
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: November 23, 2010
    Assignee: BETEK Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventor: Karl Kammerer
  • Patent number: D636797
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 26, 2011
    Assignee: BETEK Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventor: Karl Kammerer
  • Patent number: D637213
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: May 3, 2011
    Assignee: BETEK Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
    Inventor: Karl Kammerer
  • Patent number: D667854
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: September 25, 2012
    Assignee: BETEK GmbH & Co. KG
    Inventors: Karl Kammerer, Markus Roth, Bernhard Diessner
  • Patent number: D667855
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: September 25, 2012
    Assignee: BETEK GmbH & Co. KG
    Inventors: Karl Kammerer, Markus Roth, Bernhard Diessner
  • Patent number: D667856
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: September 25, 2012
    Assignee: BETEK GmbH & Co. KG
    Inventors: Karl Kammerer, Markus Roth, Bernhard Diessner