Patents by Inventor B. James Wulff

B. James Wulff 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: 4296917
    Abstract: A log skidder (10) has a fairlead (26) with a main guide roller (54) having a special contoured surface (60) to prevent grooving of the surface of the guide roller (54), to prolong cable life, and to assist in evenly winding the cable (32) on a winch drum (33). The special contoured surface (60) of the guide roller (54) includes a pair of shaped or rounded shoulders (68) at the side extremes which are aligned with the side rollers (44,46) in a way that a cable (32) passing over the main guide roller (54) in contact with one of the side rollers (44,46) receives a downward and inward centering force component which moves the cable (32) toward the midportion of the main guide roller (54).
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: October 27, 1981
    Assignee: Caterpillar Tractor Co.
    Inventors: Ralph R. Day, B. James Wulff