Patents by Inventor Johannes Leibscher

Johannes Leibscher 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: 4263689
    Abstract: A cylindrical brush is mounted in a housing of a carpet-sweeping device or the like for rotation about an axis extending transversely of the direction of movement of the device over the surface to be cleaned. Two dirt-collecting receptacles are located respectively at the front region of the housing and at the rear region of the housing as considered in the direction of movement of the receptacle over the surface being swept. The dirt-collecting receptacles are removably mounted on the housing, and arrested in their respective fully inserted positions. The dirt-collecting receptacle can be introduced into the housing from the side through one of the lateral portions, from the front, from the rear, from below and from above, depending on the particular construction of the housing. Various arrangements for arresting the dirt-collecting receptacle in its fully inserted position are disclosed.
    Type: Grant
    Filed: July 21, 1978
    Date of Patent: April 28, 1981
    Assignee: Leifheit International Gunter Leifheit GmbH
    Inventors: Johannes Leibscher, Rolf G. Schulein
  • Patent number: 4219897
    Abstract: A cylindrical brush is mounted in a housing of a carpet-sweeping device or the like for rotation about an axis extending transversely of the direction of movement of the device over the surface to be cleaned. Two dirt-collecting receptacles are located respectively at the front region of the housing and at the rear region of the housing as considered in the direction of movement of the receptacle over the surface being swept. The dirt-collecting receptacles are removably mounted on the housing, and arrested in their respective fully inserted positions. The dirt-collecting receptacle can be introduced into the housing from the side through one of the lateral portions, from the front, from the rear, from below and from above, depending on the particular construction of the housing. Various arrangements for arresting the dirt-collecting receptacle in its fully inserted position are disclosed.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: September 2, 1980
    Assignee: Leifheit International Gunter Leifheit GmbH
    Inventors: Johannes Leibscher, Rolf G. Schulein