Patents by Inventor Bernhard Dürr

Bernhard Dürr 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).

  • Publication number: 20020003361
    Abstract: A folding-table arrangement is assigned to a vehicle seat and has tabletop arrangement with at least one tabletop being accommodated in a receiving housing which is arranged laterally next to the vehicle seat. Each tabletop of the tabletop arrangement can be pulled out upwards and folded down into an approximately horizontal in-use position in which the tabletop arrangement is held by the receiving housing by supporting means. The tabletop arrangement together with its hinge pin which connects it to the receiving housing is guided in a sliding manner between its pulled-out and its pushed-in position in a guide shaft of the receiving housing. The concomitantly moved hinge pin of the tabletop arrangement is fixed on a guide slide which runs in the guide shaft of the receiving housing and, in the in-use position of the tabletop arrangement, is displaced into an upper end position in the guide shaft.
    Type: Application
    Filed: May 29, 2001
    Publication date: January 10, 2002
    Inventors: Bernhard Duerr, Frank Emhardt, Hermann Gaus, Thomas Geisel, Rainer Leucht, Ralf-Henning Schrom, Rainer Tiefenbacher
  • Patent number: 6314922
    Abstract: A hand-held working tool has a housing and an internal combustion engine arranged in the housing and comprising a crankshaft and an air filter. A tool is driven by the crankshaft of the internal combustion engine. A fan housing is attached to the engine housing and has an air inlet. A fan wheel is arranged in the fan housing and is driven by the crankshaft of the internal combustion engine to supply cooling air, sucked in through the air inlet, to the internal combustion engine. The fan housing has a bottom extending radially to the crankshaft. The bottom and a side of the fan wheel facing the bottom define a chamber in the fan housing. The bottom has a combustion air outlet. A combustion air channel is connected to the combustion air outlet and to the air filter. The combustion air outlet is axially supplying combustion air from the chamber through the combustion air channel into the air filter of internal combustion engine.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: November 13, 2001
    Assignee: Andreas Stihl AG & Co.
    Inventors: Helmut Zimmermann, Werner Geyer, Jörg Schlossarczyk, Hans Nickel, Harald Schliemann, Gunter Stein, Peter Stücke, Bernhard Dürr, Axel Klimmek
  • Patent number: 6192840
    Abstract: The invention relates to a drive unit of a portable handheld work apparatus such a motor-driven chain saw having an internal combustion engine. The crankshaft of the engine drives a tool of the work apparatus and a fan wheel. The fan wheel is held within a fan housing on a drive pin of the crankshaft. A crankcase is rigidly connected to a cylinder of the engine and is made of a metal material. The crankcase is configured of two parts and the axis of the crankshaft lies in the partition plane of the crankcase housing parts which can be connected to each other. A metallic chassis of the drive unit includes a crankcase sump as one of the crankcase halves and has a flange surface lying essentially perpendicularly to the crankshaft axis. The flange surface is at least defined in sections by the free-lying end of the crankcase sump. In this way, the weight and the manufacturing costs of the work apparatus are reduced.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: February 27, 2001
    Assignee: Andreas Stihl AG & Co.
    Inventors: Bernhard Dürr, Karl-Heinz Klöpfer