Patents by Inventor Randy R. Sawtelle

Randy R. Sawtelle 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: 6957869
    Abstract: A bucket razor body has a coupling end and a scraping end facing away from the bucket. The coupling end has an upper and lower wall with a slot between the walls. The upper wall has threaded apertures with associated bolts for releasably coupling to front end loader equipment. The scraping end of the bucket razor body has an upper and lower. A slot is formed between the surfaces. Laterally aligned threaded apertures with seven associated bolts extending through the apertures. A scraping blade is formed with an interior end. The interior end is positionable within the slot. An exterior razor-like end extends from the slit to an elevation below the lower surface and lower wall to scrape road markings from a hard surface.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: October 25, 2005
    Inventor: Randy R. Sawtelle
  • Patent number: 5775781
    Abstract: A method for removing pavement marking and a drum unit for use in practicing the method. The drum unit is mounted in a drive unit on a horizontal rotational axis. A plurality of cutting bit holders, known as blocks, are secured to the outer cylindrical surface of the drum, and there are a plurality of cutting bits that can be repeatedly installed in and removed from the holders. The blocks and cutting bits are arranged so as to produce chipping grooves in pavement sufficiently closely spaced for removing pavement markings and a thin layer of underlying pavement, while leaving an acceptably smooth surface. To produce the sufficiently closely spaced chipping grooves on pavement, the holders and cutting bits are arranged in a regular pattern with interlacing (also referred to as "lacing" or "flighting"). The holders and bits produce chipping grooves on pavement that are laterally spaced within approximately 1/2 inch of each other, and preferably closer.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: July 7, 1998
    Assignee: Randy R. Sawtelle
    Inventors: Randy R. Sawtelle, Ronald D. Mills