Patents by Inventor Yang-Ming Li

Yang-Ming Li 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).

  • Publication number: 20030192410
    Abstract: A screwdriver is equipped with a removable ring tab on which words or diagrams are provided. The screwdriver has a handle portion and a shank portion and on the handle portion is disposed a recessed groove in which the ring tab of a like or different color can be housed. The ends of the ring tab are provided with a retaining protrusion and a retaining cavity respectively for locking the ring tab in place. Words or diagrams of different sized can be printed or punched on the ring tab instead of on the handle portion whereby even mistakenly printed or punched words or diagrams can be easily removed by replacement of the ring tabs without discarding the whole screwdrivers in mass production. Besides, the printed or punched words or diagrams are not easily abraded away in long term operation.
    Type: Application
    Filed: April 15, 2002
    Publication date: October 16, 2003
    Applicant: Hung Yu Industrial Co., Ltd.
    Inventor: Yang Ming Li
  • Patent number: 6363819
    Abstract: A knockdown hand tool structure. The structure includes a grip, a screwdriver stem, a fitting post and a socket. A front end of an elongated stem of the grip is formed with a central hexagonal fitting hole with a certain depth. A stop sleeve is fitted on the front end of the elongated stem. A steel ball and a compression spring are received in the stop sleeve. The screwdriver stem is a hexagonal stem body. Two ends of the screwdriver stem are respectively equipped with different specifications or patterns of screwdriver heads. Certain portions of the body of the screwdriver stem are formed with annular engaging grooves with V-shaped cross-section and a certain depth at equal intervals. The fitting post is a short cylindrical body.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: April 2, 2002
    Assignee: Hung Yu Industrial Co., Ltd.
    Inventor: Yang-Ming Li