Patents by Inventor Patricia Yawn

Patricia Yawn 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: 5031389
    Abstract: A construction having two separately operable mowers driven by a single tractor unit. The tractor drives our double gear box, which is operably connected to drive two laterally spaced separate gear boxes, each of which drives grass cutting blades. Each of the two mowers has four wheels at the rear to permit elevating or lowering the grass cutting blade to control the degree of cut. With this construction it is possible to cut the grass regardless of the elevation of the grass. One of the units can be mowing the grass on a horizontal portion of a bed, while the other unit is operating on the slope of one of the beds. It is also readily possible to mow the grass at the bottom of the v shaped area between two beds.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: July 16, 1991
    Inventors: Valda E. Yawn, Patricia Yawn