Patents by Inventor Dirk Spohr

Dirk Spohr 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).

  • Engine-driven tool
    Patent number: 7487746
    Abstract: A drive system for a tool, particularly a chain saw, includes a fresh air inlet and an intake manifold arranged after the fresh air inlet in the flow direction of the fresh air that opens into a carburettor. A combustion engine is provided that is arranged after the carburettor in the flow direction of an air-fuel mixture produced in the carburettor, in which the carburettor is exposed to a lower level of thermal stress. At least one heat conducting cooling vane is connected to the carburettor and protrudes outwards into direct contact with the ambient fresh air.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: February 10, 2009
    Assignee: DOLMAR GmbH
    Inventors: Jan Rodenbeck, Johannes Lugger, Sascha Kolossow, Dirk Spohr
  • ENGINE-DRIVEN TOOL
    Publication number: 20080127498
    Abstract: A drive system for a tool, particularly a chain saw, includes a fresh air inlet and an intake manifold arranged after the fresh air inlet in the flow direction of the fresh air that opens into a carburettor. A combustion engine is provided that is arranged after the carburettor in the flow direction of an air-fuel mixture produced in the carburettor, in which the carburettor is exposed to a lower level of thermal stress. At least one heat conducting cooling vane is connected to the carburettor and protrudes outwards into direct contact with the ambient fresh air.
    Type: Application
    Filed: August 29, 2007
    Publication date: June 5, 2008
    Applicant: DOLMAR GMBH
    Inventors: Jan Rodenbeck, Johannes Lugger, Sascha Kolossow, Dirk Spohr