Patents by Inventor Berthold Aumueller

Berthold Aumueller 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).

  • Method for manufacturing a thread-forming screw
    Patent number: 8696477
    Abstract: A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: April 15, 2014
    Assignee: Hilti Aktiengesellschaft
    Inventors: Franz Huber, Martin Pleil, Carl Hoffmann, Andreas Vorhauer, Simon Oppeneiger, Berthold Aumueller, Georg Oberndorfer, Juergen Gahn, Corinna Achleitner
  • METHOD FOR MANUFACTURING A THREAD-FORMING SCREW
    Publication number: 20100216560
    Abstract: A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.
    Type: Application
    Filed: December 16, 2009
    Publication date: August 26, 2010
    Applicant: Hilti Aktiengesellschaft
    Inventors: Franz Huber, Martin Pleil, Carl Hoffmann, Andreas Vorhauer, Simon Oppeneiger, Berthold Aumueller, Georg Oberndorfer, Juergen Gahn, Corinna Achleitner
  • Thread-tapping screw
    Patent number: 7740435
    Abstract: A thread-tapping screw (11) has a thread (21) extending, starting from the screw shaft free end (15), at least along a portion of the shaft length and a height of which constantly decreasing toward the free end (15) of the shaft (12), and a plurality of cutting bodies (26, 36, 46, 56, 66) formed of a material having a greater hardness than hardness of the thread (21), located in recesses (24) formed in the thread (21) and opening radially outwardly and having, respectively, a radial outer profile (27, 37, 47, 57, 67) projecting, at least partially, beyond the thread and a height (A, B, C, D, E) of which decreases toward the free end (15) of the shaft (12) stepwise.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: June 22, 2010
    Assignee: Hilti Aktiengesellscahft
    Inventors: Peter Gstach, Berthold Aumueller
  • Thread-tapping screw
    Publication number: 20090155018
    Abstract: A thread-tapping screw (11) has a thread (21) extending, starting from the screw shaft free end (15), at least along a portion of the shaft length and a height of which constantly decreasing toward the free end (15) of the shaft (12), and a plurality of cutting bodies (26, 36, 46, 56, 66) formed of a material having a greater hardness than hardness of the thread (21), located in recesses (24) formed in the thread (21) and opening radially outwardly and having, respectively, a radial outer profile (27, 37, 47, 57, 67) projecting, at least partially, beyond the thread and a height (A, B, C, D, E) of which decreases toward the free end (15) of the shaft (12) stepwise.
    Type: Application
    Filed: October 30, 2008
    Publication date: June 18, 2009
    Inventors: Peter Gstach, Berthold Aumueller