Patents by Inventor Hans-Juergen Ettrich

Hans-Juergen Ettrich 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: 20140075714
    Abstract: An apparatus for clearing up, in particular for removing sand from, areas of grass includes a basic housing, rollers, a blower and a collection container. The apparatus has a low degree of design complexity such that areas of grass can be cleared up in a simple manner, it being possible, in particular, to easily remove sand and other foreign matter from greens of golf courses. The invention proposes providing a nozzle, through which the propelled air which is conveyed by means of the blower flows towards the area of grass, downstream of the blower in the direction of flow, wherein no cutting tool is provided. An inflow opening of an exhaust-air duct is arranged downstream of the nozzle, with a space being left free above the area of grass, in such a way that the air flows substantially horizontally over the area of grass in the space.
    Type: Application
    Filed: November 18, 2013
    Publication date: March 20, 2014
    Inventor: Hans-Juergen ETTRICH
  • Publication number: 20090229234
    Abstract: An apparatus for clearing up, in particular for removing sand from, areas of grass includes a basic housing, rollers, a blower and a collection container. The apparatus has a low degree of design complexity such that areas of grass can be cleared up in a simple manner, it being possible, in particular, to easily remove sand and other foreign matter from greens of golf courses. The invention proposes providing a nozzle, through which the propelled air which is conveyed by means of the blower flows towards the area of grass, downstream of the blower in the direction of flow, wherein no cutting tool is provided. An inflow opening of an exhaust-air duct is arranged downstream of the nozzle, with a space being left free above the area of grass, in such a way that the air flows substantially horizontally over the area of grass in the space.
    Type: Application
    Filed: July 10, 2006
    Publication date: September 17, 2009
    Inventor: Hans-Juergen Ettrich