Patents by Inventor Masaaki Tanahashi

Masaaki Tanahashi 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: 5195692
    Abstract: A method of taking up the ribbon, which flies from a quickly cooling roll, directly on a drum. There are connected in the recited order a guide tube fixed in the vicinity of the roll and in a tangential direction, a movable suction tube, a flexible hose and suction means. The drum is given a self-adhesive layer on its outer circumference and is movably disposed in the vicinity of the connection between the guide tube and the suction tube. While the suction tube is communicating with the guide tube, the ribbon is caused to pass through the guide tube, the suction tube and the hose. The suction tube is moved apart from the guide tube to expose the ribbon to the outside. The drum rotated in the same direction as that of the roll is moved to come into contact with the exposed ribbon. The suction tube is then moved so that the exposed ribbon passing to the suction tube may be wound on the drum.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: March 23, 1993
    Assignee: Hitachi Metal, Ltd.
    Inventors: Hiroyuki Fujii, Masaaki Tanahashi, Yukio Yoshimura
  • Patent number: 5004172
    Abstract: In a take-up apparatus for an amorphous metal ribbon a first tubular guide provides a passage for the ribbon from a ribbon manufacturing apparatus. A storage chamber is connected to the first tubular guide and a take-up drum is connected to the storage chamber through a second telescopic tubular guide. A gas suction device is connected to the take-up drum through a third tubular guide. The take-up apparatus is arranged in tandem with the ribbon manufacturing apparatus which comprises a crucible equipped at its lower end with a nozzle and accommodating a molten metal therewithin and a rapidly rotating quench roll disposed below the nozzle. The ribbon is manufactured by rapidly quenching the molten metal ejected from the nozzle on the quench roll and removing the ribbon at a high speed in a direction tangent to the quench roll. The ribbon is then sucked into the first tubular guide together with an air flow provided by the gas suction device.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: April 2, 1991
    Assignee: Hitachi Metals Ltd.
    Inventors: Masaaki Tanahashi, Hiroyuki Hagiwara, Hiroyuki Fujii