Patents by Inventor Christoph AMMAN

Christoph AMMAN 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: 10717137
    Abstract: A drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: July 21, 2020
    Assignee: Hilti Aktiengesellschaft
    Inventors: Matthaeus Hoop, Christoph Weber, Thomas Britt, Christoph Amman
  • Publication number: 20190091777
    Abstract: A drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.
    Type: Application
    Filed: November 28, 2018
    Publication date: March 28, 2019
    Applicant: Hilti Aktiengesellschaft
    Inventors: Matthaeus HOOP, Christoph Weber, Thomas Britt, Christoph Amman
  • Patent number: 10201860
    Abstract: A drill bit is disclosed. The drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 12, 2019
    Assignee: Hilti Aktiengesellschaft
    Inventors: Matthaeus Hoop, Christoph Weber, Thomas Britt, Christoph Amman
  • Publication number: 20150343540
    Abstract: Drill bit (10), which is rotatable in a direction of rotation (21) about an axis of rotation (22), having: a cutting portion (11) with as annular portion (13), which is connected at a first end to one or more cutting elements (14) and has at a second end an outer insertion clement (15) and a stop shoulder (59), and a drill shaft portion (12) with a cylindrical drill shaft (16), which has at an end towards the cutting portion (11) an inner insertion element (17) with an end face (33), in a direction of insertion parallel to the axis of rotation (22), the insertion elements (15, 17) form a plug-in connection and can be additionally connected by way of at least one pin element (25), which is movable in at least one slit-shaped clearance (26). The at least one pin element (25) is fastened to an outer side (27) of the inner insertion element (17) and the outer insertion element (15) has the at least one slit-shaped clearance (26).
    Type: Application
    Filed: December 20, 2013
    Publication date: December 3, 2015
    Applicant: HILTI AKTIENGESELLSCHAFT
    Inventors: Matthaeus HOOP, Christoph WEBER, Thomas BRITT, Christoph AMMAN