Patents by Inventor Ralf Blechsmidt

Ralf Blechsmidt 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).

  • Patent number: 7363888
    Abstract: A two-stroke engine has a cylinder and a piston reciprocating in the cylinder and delimiting a combustion chamber. The piston has at least one piston recess. A crankshaft is rotatably arranged in a crankcase connected to the cylinder. A connecting rod connects piston and crankshaft. Transfer channels connect the crankcase to the combustion chamber in pre-defined piston positions. The transfer channels each have a transfer port opening into the combustion chamber. A device for supplying fuel and an air channel supplying combustion air are provided. In predetermined piston positions, the air channel is connected by the piston recess to the transfer ports. The air channel opens into the cylinder bore opposite the exhaust for the exhaust gases. The air channel, the piston recess, and the transfer channels define an air passage that provides approximately uniform distribution of air from the air channel into the transfer channels.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: April 29, 2008
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Axel Klimmek, Silke Kaminski, Werner Geyer, Roland Schmidt, Tommy Roitsch, Ralf Blechsmidt, Andreas Bähner, Olaf Schmidt