Patents by Inventor Kuniyoshi Hanai

Kuniyoshi Hanai 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: 5317858
    Abstract: A bag forming/filling system includes a delivery mechanism to feed a predetermined length of web material from a web roll to a bag forming cylinder, in which the web is sealed by a sealing machine to form a bag. A predelivery mechanism unwinds and loosens a portion of the web from the web roll by a length substantially corresponding to the predetermined length before operation of the delivery mechanism. The predelivery mechanism may include a pivotally movable tension lever, which moves in an unwinding direction substantially during the closing motion of the sealing machine. In a second embodiment, the predelivery mechanism includes a drive element for rotating the web roll and a detector for detecting a slackened length of a portion of the web.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: June 7, 1994
    Assignee: Tokyo Automatic Machinery Works, Ltd.
    Inventor: Kuniyoshi Hanai