Patents by Inventor Hartmut Springmann

Hartmut Springmann 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).

  • Hand-scrubbing brush
    Patent number: 5500971
    Abstract: A hand-scrubbing brush has drive mechanism, a housing accommodating the drive mechanism, the housing having a kidney-shaped profile, a plurality of rotational bodies equipped with bristles arranged rotatably in one narrow side of the housing along a line adapted to a kidney shape of the profile, and a mechanism for transmitting movement of the drive mechanism to the rotational bodies so as to drive the rotational bodies in form-and force-locking manner.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: March 26, 1996
    Inventor: Hartmut Springmann