Patents Assigned to Sunwa Sharyo Mfg. Co., Ltd.
  • Stairway-climbing cart
    Patent number: 4033421
    Abstract: A stairway climbing cart for lifting goods along the stairway which may also be moved on the floor. The cart has a driving crawler belt at the central portion thereof for facilitating the turning of the cart at the stage of the stairway and has a pair of wheels and sledge members at both sides of the cart. The wheels are to move on the floor and the sledge members are to prevent the lateral overthrow of the cart.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: July 5, 1977
    Assignee: Sunwa Sharyo Mfg. Co., Ltd.
    Inventor: Yasuaki Ikarimoto