Patents by Inventor Clarence P. Kroll

Clarence P. Kroll 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: 4831683
    Abstract: There is disclosed herein an upright vacuum cleaner comprising a main body having a suction opening, and a handle body pivotally attached to the main body. A lifting assembly for the main body comprises a pair of wheel assemblies pivotally attached to the handle body. These wheel assemblies support the vacuum cleaner in a manner to raise its suction opening and brush assembly from the floor when the vacuum cleaner is in its full upright or idle condition. The wheel assemblies are suitably attached to receptacles in the handle body to allow these assemblies to move out of the way when the vacuum cleaner is used in the normal cleaning fashion, but to engage the floor when the handle body is moved to the full upright position.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: May 23, 1989
    Assignee: Riccar America Company
    Inventors: Clarence P. Kroll, Craig J. Neal, Robert L. Trapp
  • Patent number: D305168
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: December 19, 1989
    Assignee: Riccar America Company
    Inventor: Clarence P. Kroll