Patents by Inventor Toshiyuki Sakazawa

Toshiyuki Sakazawa 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: 11213883
    Abstract: A casting device for operating stably while suppressing leakage from a gap between a tip and a sleeve is disclosed. The casting device includes: a sliding member in the center of which a rod slides, and in which a gap is formed between the rod and the sleeve; a seal member arranged at an outer periphery of the sliding member; and a suction device for suctioning air inside the sleeve. When the seal member is positioned in a center section closer to a cavity than a pouring hole, and the air in a space between the sliding member and the tip is suctioned, the seal member assumes a first state in which the seal member adheres to the center section, and in the first state, the tip advances toward the cavity.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: January 4, 2022
    Assignee: AHRESTY CORPORATION
    Inventors: Toshiyuki Sakazawa, Shigeyoshi Komaki, Takanori Takahashi
  • Publication number: 20200282455
    Abstract: Provided is a casting device that is able to operate stably while suppressing leakage from a gap between a tip and a sleeve. The casting device comprises: a sliding member in the center of which a rod slides, and in which a gap is formed between the rod and a sleeve; a seal member arranged at the outer periphery of the sliding member; and a suction device for suctioning air inside the sleeve. When the seal member is positioned in a center section closer to a cavity than the pouring hole, and the air in a space between the sliding member and the tip is suctioned, the seal member assumes a first state in which the seal member adheres to the center section, and in the first state the tip advanced toward the cavity.
    Type: Application
    Filed: April 12, 2018
    Publication date: September 10, 2020
    Applicant: Ahresty Corporation
    Inventors: Toshiyuki Sakazawa, Shigeyoshi Komaki, Takanori Takahashi
  • Patent number: 7051784
    Abstract: By determining an amount of a metal to be prepared into a slurry in its liquid state, thereafter applying a motion to the melted metal via a mechanical or physical means when at least a part of the melted metal reaches a temperature below the liquidus temperature and cooling the melted metal in a slurry preparing container to prepare the melted metal into a metal slurry in a semi-solid state, and by concurrently making the semi-solid metal slurry in the slurry preparing container with a shape to be kept almost unchanged, and feeding the semi-solid metal slurry in a state wherein the shape is nearly kept as it is into the shot sleeve/prechamber of the part making machine, a semi-solid metal slurry with the non-dendritic (spherical) primary crystal particles being fine and almost uniform can be fed into the part making machine, with no need of any specifically complex process but with a simple system and plain equipment. Thus, a shaped part with high quality can be produced.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: May 30, 2006
    Assignee: Ahresty Corp.
    Inventors: Shunzo Aoyama, Chi Liu, Toshiyuki Sakazawa, Ye Pan
  • Publication number: 20030062144
    Abstract: By determining an amount of a metal to be prepared into a slurry in its liquid state, thereafter applying a motion to the melted metal via a mechanical or physical means when at least a part of the melted metal reaches a temperature below the liquidus temperature and cooling the melted metal in a slurry preparing container to prepare the melted metal into a metal slurry in a semi-solid state, and by concurrently making the semi-solid metal slurry in the slurry preparing container with a shape to be kept almost unchanged, and feeding the semi-solid metal slurry in a state wherein the shape is nearly kept as it is into the shot sleeve/prechamber of the part making machine, a semi-solid metal slurry with the non-dendritic (spherical) primary crystal particles being fine and almost uniform can be fed into the part making machine, with no need of any specifically complex process but with a simple system and plain equipment. Thus, a shaped part with high quality can be produced.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 3, 2003
    Inventors: Shunzo Aoyama, Chi Liu, Toshiyuki Sakazawa, Ye Pan
  • Publication number: 20020011321
    Abstract: By determining an amount of a metal to be prepared into a slurry in its liquid state, thereafter applying a motion to the melted metal via a mechanical or physical means when at least a part of the melted metal reaches a temperature below the liquidus temperature and cooling the melted metal in a slurry preparing container to prepare the melted metal into a metal slurry in a semi-solid state, and by concurrently making the semi-solid metal slurry in the slurry preparing container with a shape to be kept almost unchanged, and feeding the semi-solid metal slurry in a state wherein the shape is nearly kept as it is into the shot sleeve/prechamber of the part making machine, a semi-solid metal slurry with the non-dendritic (spherical) primary crystal particles being fine and almost uniform can be fed into the part making machine, with no need of any specifically complex process but with a simple system and plain equipment. Thus, a shaped part with high quality can be produced.
    Type: Application
    Filed: October 21, 1999
    Publication date: January 31, 2002
    Inventors: SHUNZO AOYAMA, CHI LIU, TOSHIYUKI SAKAZAWA, YE PAN