Patents Assigned to Art Japan Co., Ltd.
  • Patent number: 5769511
    Abstract: A road surface protection cover for covering the metal blade of a crawler track shoe. The cover comprises a main body (1) and a pair of fixtures 3 and 4 to be fixed on the left and right ends of the main body of the cover. In the interior of the main body 2 of the cover, there are embedded steel pipes 7 and 8 on the sides of fixture 3 and 4, there are side boards 3a, 3b and 4a, 4b, there are female screw threads 7a, 7b and 8a, 8b in the pipes 7 and 8. Through these bolts 9, 10 and 11,12 penetrate holes 3a, 3b and 4a, 4b for screwing purpose. On the faces of the ends there are depression 3e, 3f and 4e, 4f to conceal the best threads. In addition, the side boards 3c and 4c have their interior faces 3g and 4g formed in taper shape.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: June 23, 1998
    Assignee: Art Japan Co., Ltd.
    Inventor: Tomitaro Hattori