Patents Assigned to Mitsuya Tekko Co., Ltd.
  • Patent number: 4952202
    Abstract: An apparatus for producing a paper tube or like tube at a constant speed by helically winding tape on a mandrel tightly with a great torsional force without creating any tape-to-tape clearance and delivering the tube formed from the mandrel axially thereof with a great force while rotating the tube without warping the mandrel. The apparatus comprises tape feeders, the mandrel and a tube rotating-drawing device for delivering the tube from the mandrel axially thereof while rotating the tube. When required, other devices can be provided for the apparatus which include a tape winding device and a tube press which are interposed between the tape feeders and the tube rotating-drawing device, and a resin-coated tape feeder, resin applicator stand, drying oven, grinding stand and tube cutter which are arranged downstream from the tube rotating-drawing device.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: August 28, 1990
    Assignee: Mitsuya Tekko Co., Ltd.
    Inventor: Tomio Itoh