Patents by Inventor Helmut J. Ullrich

Helmut J. Ullrich 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: 8572940
    Abstract: A mower for cutting grass comprises a traction frame that is self-propelled over the ground by a power source carried on the traction frame. The mower includes a thumb wheel throttle control that progressively increases and decreases the power output of the power source as the thumb wheel is rotated in one direction or an opposite direction. The thumb wheel has a plurality of tabs that define grooves on an arcuate rim on the thumb wheel for receiving a thumb or index finger of one of the operator's hands.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: November 5, 2013
    Assignee: The Toro Company
    Inventors: Gordon R. Schmidt, Helmut J. Ullrich
  • Publication number: 20130205735
    Abstract: A mower for cutting grass comprises a traction frame that is self-propelled over the ground by a power source carried on the traction frame. The mower includes a thumb wheel throttle control that progressively increases and decreases the power output of the power source as the thumb wheel is rotated in one direction or an opposite direction. The thumb wheel has a plurality of tabs that define grooves on an arcuate rim on the thumb wheel for receiving a thumb or index finger of one of the operator's hands.
    Type: Application
    Filed: February 9, 2012
    Publication date: August 15, 2013
    Inventors: Gordon R. Schmidt, Helmut J. Ullrich
  • Patent number: 5289879
    Abstract: An improved rake assembly for a sandtrap maintenance machine comprises a rake frame having a transverse row or rows of scarifying teeth. A trowel plate is fixed to the rake frame and trails behind the scarifying teeth and includes a substantially planar lower edge comprising a horizontal flange that bears against the sand to smooth out the sand disturbed by the scarifying teeth. In addition, a finishing rake is moveably attached to the rake frame to trail behind both the scarifying teeth and the trowel plate to allow the finishing rake to further groom and smooth the surface of the sand. The trowel plate is adjustably carried on the rake frame to be capable of vertical adjustment up and down relative to the rake frame. This vertical adjustment allows the height of the scarifying teeth of the rake frame to be quickly adjusted without having to individually adjust the scarifying teeth one by one.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: March 1, 1994
    Assignee: The Toro Company
    Inventors: Malachy Fay, Helmut J. Ullrich
  • Patent number: 4878340
    Abstract: A grooming reel is carried on a greenmower between the front roller and the cutting reel. An improved adjustment unit is provided for changing the height of the grooming reel relative to the ground. The adjustment unit comprises an elongated rod connected to a support member on which the grooming reel is carried. A rotatable knob longitudinally draws the rod slightly along its axis to fine-tune the operating position of the grooming reel. In addition, the rod can be moved along its axis to raise and lower the grooming reel between an upper position and the operating position without disturbing the adjustment of the grooming reel in its operating position.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: November 7, 1989
    Assignee: The Toro Company
    Inventors: Michael G. Roy, Helmut J. Ullrich, John M. Beattle, Jimmie D. Sinden