Patents by Inventor Roman Bächtold

Roman Bächtold 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).

  • Portable, internal combustion-engined, setting tool
    Patent number: 6666366
    Abstract: A portable, internal combustion-engined setting tool for driving in fastening elements and including a drive piston (8), 34 a combustion chamber 1 having an inlet/outlet valve 34, located adjacent to the piston (8) and in which a fuel gas mixture is ignited for generating pressure for driving the piston (8), a locking/unlocking device (54) for closing and opening the outlet valve (34), respectively, a sensing device (55) for retaining the locking/unlocking device (54) in a locking position and having a member that is pressed against a circumference of the piston rod (10) for retaining the locking/unlocking device (54) in the locking position, and an element for positioning the member relative to the piston rod 10, when the piston (8) is not in its initial position, so that the member does not apply to the locking/unlocking device (54) a force acting in a locking direction of the locking/unlocking device.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: December 23, 2003
    Assignee: Hilti Aktiengesellschaft
    Inventors: Ulrich Rosenbaum, Roman Bächtold