Patents by Inventor William Brabenec

William Brabenec 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).

  • Multiple string lawnmower
    Patent number: 6427429
    Abstract: A multi-string lawnmower that has a multi-tiered housing to which is mounted to at least one electric motor coupled to a battery. There are a plurality of mandrel shafts arranged in rows mounted to bearings on the underside of the housing. The mandrel shafts are associated with roller guides and engage a serpentine belt, that is powered by the at least one electric motor. The serpentine belt imparts rotational motion to the mandrel shafts such that adjacent shafts rotate in opposite directions. The cutting elements or strings are attached to the mandrel shafts and are held in place by centrifugal force.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: August 6, 2002
    Inventor: William Brabenec