Patents by Inventor Thorsten Hecht

Thorsten Hecht 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 handheld work apparatus having an internal combustion engine
    Patent number: 9016246
    Abstract: In an internal combustion engine (2) of a portable handheld work apparatus, the cylinder (3) is provided with cooling ribs (4, 4?). A cooling airflow is generated by the fan wheel (13) and is guided over the cooling ribs. A carburetor (9) is temperaturized as required by the heated cooling air. A control of the cooling airflow to the carburetor (9) takes place in that an opening (11), which passes the heated cooling air, is selectively closed or opened via a closure element (12). In order to obtain improved cooling of the cylinder during summer operation as well as during winter operation, the closure element (12) is provided with at least one air guide wall which extends essentially transversely to the cooling airflow and causes this cooling air to be partially backed up and deflected.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: April 28, 2015
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Jan Kurzenberger, Thorsten Hecht, Sebastian Hänssler, Stefan Kummermehr
  • Portable Handheld Work Apparatus having an Internal Combustion Engine
    Publication number: 20120291725
    Abstract: In an internal combustion engine (2) of a portable handheld work apparatus, the cylinder (3) is provided with cooling ribs (4, 4?). A cooling airflow is generated by the fan wheel (13) and is guided over the cooling ribs. A carburetor (9) is temperaturized as required by the heated cooling air. A control of the cooling airflow to the carburetor (9) takes place in that an opening (11), which passes the heated cooling air, is selectively closed or opened via a closure element (12). In order to obtain improved cooling of the cylinder during summer operation as well as during winter operation, the closure element (12) is provided with at least one air guide wall which extends essentially transversely to the cooling airflow and causes this cooling air to be partially backed up and deflected.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 22, 2012
    Inventors: Jan Kurzenberger, Thorsten Hecht, Sebastian Hänssler, Stefan Kummermehr
  • Portable handheld work apparatus having an internal combustion engine
    Publication number: 20100199931
    Abstract: In an internal combustion engine (2) of a portable handheld work apparatus, the cylinder (3) is provided with cooling ribs (4, 4?). A cooling airflow is generated by the fan wheel (13) and is guided over the cooling ribs. A carburetor (9) is temperaturized as required by the heated cooling air. A control of the cooling airflow to the carburetor (9) takes place in that an opening (11), which passes the heated cooling air, is selectively closed or opened via a closure element (12). In order to obtain improved cooling of the cylinder during summer operation as well as during winter operation, the closure element (12) is provided with at least one air guide wall which extends essentially transversely to the cooling airflow and causes this cooling air to be partially backed up and deflected.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 12, 2010
    Inventors: Jan Kurzenberger, Thorsten Hecht, Sebastian Hänssler, Stefan Kummermehr