Patents by Inventor Don Ku

Don Ku 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: 5291976
    Abstract: A suitcase including a luggage member, a support structure attached to the luggage member, the support structure having a first horizontal member having two wheels thereon to facilitate towing on the ground, a second horizontal member, two tubular members coupling the first and second horizontal members, thereby forming a rectangular frame, a shaft in extensible slidable engagement in each of the tubular members, the shafts being connected by a first handle, the shafts being extensible between a collapsed position in the tubular members and a fully extended position to enable towing of the luggage member on the wheels, at least one of the shafts including a wedging member slidable within the respective tubular member which is received frictionally in a first bore provided at an end of the respective tubular member adjacent the second horizontal member to maintain the shafts in the fully extended position.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: March 8, 1994
    Assignee: Liberty Leather Products Co. Inc.
    Inventor: Don Ku