Patents by Inventor Josef Schitti

Josef Schitti 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).

  • Equipment for working a hard material
    Patent number: 6220046
    Abstract: Equipment for working a hard material includes a housing (2), a driving motor (1), located within the housing, a cooling duct (3) within the housing surrounding the driving motor, a tool (5) for working the hard material connected to the driving motor and at least one electronic component (19) mounted on a cooling device (8). A coolant supply source (6) supplies coolant under pressure to the cooling device (8) and then to an upstream end of the cooling duct (3). A first coolant discharge pipeline (13) is connected to a downstream end of the cooling duct (3). The first coolant discharge pipeline (13) flows the coolant into a reversible distributor (10).
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: April 24, 2001
    Assignee: Hilti Aktiengesellschaft
    Inventors: Ferdinand Kristen, Hans-Werner Bongers-Ambrosius, Josef Schitti, Erwin Reisinger