Patents by Inventor Benno LOETSCHER

Benno LOETSCHER 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).

  • Pelton runner
    Patent number: 10550821
    Abstract: A Pelton runner with a wheel disk and separately fabricated buckets (2), which may be cast or made from a solid block of material and secured detachably to the wheel disk (1), fastened by at least one screw (5) or at least one bolt. At least one screw or at least one bolt is designed as an expansion screw (5) or expansion bolt, where the expansion screw (5) or expansion bolt is subjected to controlled pre-stressing, and each bucket (2) has at least one expansion screw (5) or expansion bolt that is arranged perpendicular to the axis of rotation of the wheel disk (1) and secured to the wheel disk (1).
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: February 4, 2020
    Assignee: ANDRITZ HYDRO GMBH
    Inventors: Benno Loetscher, Pascal Isler, Stefan Lais
  • PELTON RUNNER
    Publication number: 20170241396
    Abstract: A Pelton runner with a wheel disk and separately fabricated buckets (2), which may be cast or made from a solid block of material and secured detachably to the wheel disk (1), fastened by at least one screw (5) or at least one bolt. At least one screw or at least one bolt is designed as an expansion screw (5) or expansion bolt, where the expansion screw (5) or expansion bolt is subjected to controlled pre-stressing, and each bucket (2) has at least one expansion screw (5) or expansion bolt that is arranged perpendicular to the axis of rotation of the wheel disk (1) and secured to the wheel disk (1).
    Type: Application
    Filed: February 15, 2017
    Publication date: August 24, 2017
    Inventors: Benno LOETSCHER, Pascal ISLER, Stefan LAIS