Patents by Inventor Karl Johannes Krollmann

Karl Johannes Krollmann 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).

  • Kelly bar arrangement
    Patent number: 8246474
    Abstract: A Kelly bar arrangement includes an inner bar and at least one outer bar, whereby the inner bar is arranged with respect to the at least one outer bar in an axially movable but rotationally fixed manner, and a spring means which is arranged in a lower area of the inner bar for cushioning an axial movement of the inner bar with respect to the at least one outer bar. In accordance with the invention provision is made for the spring means to be designed as an elastomer spring.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 21, 2012
    Assignee: Bauer Maschinen GmbH
    Inventors: Karl Johannes Krollmann, Melchior Jais
  • Drilling implement and method for operating a drilling implement
    Patent number: 8002048
    Abstract: The invention relates to a drilling implement with a derrick, a drill drive for driving a drill rod guided on the derrick and a gear, which is placed between the drill drive and drill rod for transmission purposes. According to the invention, for inverting the gear ratio, the gear is placed in disengageable and reversible manner on the drill drive.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: August 23, 2011
    Assignee: Bauer Maschinen GmbH
    Inventors: Matthias Saehn, Karl Johannes Krollmann, Matthias Jais
  • KELLY BAR ARRANGEMENT
    Publication number: 20110105235
    Abstract: The invention relates to a Kelly bar arrangement having an inner bar and at least one outer bar, whereby the inner bar is arranged with respect to the at least one outer bar in an axially movable but rotationally fixed manner, and a spring means which is arranged in a lower area of the inner bar for cushioning an axial movement of the inner bar with respect to the at least one outer bar. In accordance with the invention provision is made for the spring means to be designed as an elastomer spring.
    Type: Application
    Filed: April 20, 2010
    Publication date: May 5, 2011
    Applicant: BAUER MASCHINEN GmbH
    Inventors: Karl Johannes Krollmann, Melchior Jais
  • Earth drilling device
    Patent number: 7775300
    Abstract: An earth drilling device includes an auger, an encasing tube that surrounds the auger, a rotary drive for driving at least the auger in a rotating manner about a drilling axis, and an ejecting device for discharging drill spoil from the auger. The ejecting device has a discharge duct for the drill spoil, and a mast element along which the auger can be moved together with the ejecting device. A device for changing the length of the discharge duct is provided.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 17, 2010
    Assignee: Bauer Maschinen GmbH
    Inventor: Karl Johannes Krollmann
  • Drilling implement and method for operating a drilling implement
    Publication number: 20090071674
    Abstract: The invention relates to a drilling implement with a derrick, a drill drive for driving a drill rod guided on the derrick and a gear, which is placed between the drill drive and drill rod for transmission purposes. According to the invention, for inverting the gear ratio, the gear is placed in disengageable and reversible manner on the drill drive.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 19, 2009
    Inventors: Matthias Saehn, Karl Johannes Krollmann, Matthias Jais
  • Earth drilling device
    Publication number: 20080245571
    Abstract: The invention relates to an earth drilling device comprising an auger, an encasing tube that surrounds the auger, a rotary drive for driving at least the auger in a rotating manner about a drilling axis, an ejecting device for discharging drill spoil from the auger, wherein the ejecting device has a discharge line for the drill spoil, and a mast element along which the auger can be moved together with the ejecting device. The invention is characterized in that a device for changing the length of the discharge line is provided.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 9, 2008
    Inventor: Karl Johannes Krollmann