Patents by Inventor Christian Littek

Christian Littek 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).

  • Percussion tool having cooling of equipment components
    Patent number: 9272407
    Abstract: A percussion tool has a cooling air channel for guiding a cooling air flow from a cooling air fan to an outside wall of a cylinder of an internal combustion engine. The cooling air channel is tapered to the extent that partial cooling air flows guided between the respective cooling fins are branched off the main cooling air flow. In such a way, the flow rate of the cooling air flow in the cooling air channel remains substantially constant, resulting in optimized engine cooling. The cooling air channel may be divided into two cooling air channels downstream of the cylinder. One of the cooling air channels guides cooling air to an exhaust gas system of the internal combustion engine, while the other cooling air channel guides cooling air to an outside wall of the guide housing of a hammer mechanism.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: March 1, 2016
    Assignee: Wacker Neuson Produktion GmbH & Co. KG
    Inventors: Michael Fischer, Otto W. Stenzel, Wolfgang Hausler, Rudolf Berger, Christian Littek, Helmut Braun, Manfred Zinsmeister
  • PERCUSSION TOOL HAVING COOLING OF EQUIPMENT COMPONENTS
    Publication number: 20130098650
    Abstract: A percussion tool has a cooling air channel for guiding a cooling air flow from a cooling air fan to an outside wall of a cylinder of an internal combustion engine. The cooling air channel is tapered to the extent that partial cooling air flows guided between the respective cooling fins are branched off the main cooling air flow. In such a way, the flow rate of the cooling air flow in the cooling air channel remains substantially constant, resulting in optimized engine cooling. The cooling air channel may be divided into two cooling air channels downstream of the cylinder. One of the cooling air channels guides cooling air to an exhaust gas system of the internal combustion engine, while the other cooling air channel guides cooling air to an outside wall of the guide housing of a hammer mechanism.
    Type: Application
    Filed: January 13, 2011
    Publication date: April 25, 2013
    Applicant: Wacker Neuson Produktion GmbH & Co. KG
    Inventors: Michael Fischer, Otto W. Stenzel, Wolfgang Hausler, Rudolf Berger, Christian Littek, Helmut Braun, Manfred Zinsmeister