Patents by Inventor Yoshiyuki Kajiura

Yoshiyuki Kajiura 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).

  • Method and device for producing bellows
    Patent number: 6386012
    Abstract: In order to produce a metal bellows of a length of “Ls” for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a length of “L” that is longer than the length “Ls”. Then, the blank is axially compressed by a length of “a”, so that the compressed blank has a length of “L−a” that is shorter than the length “Ls”. Then, the compressed blank is axially expanded so that the expanded blank has a length of “L−a+b” that is longer than the length “Ls”. Then, the force that has been applied to the blank is removed, and then the treated blank is left in room temperature until the time when the treated blank becomes to have the length of “Ls” due to the spring-back phenomenon.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: May 14, 2002
    Assignee: Calsonic Kansei Corporation
    Inventors: Tadahiro Minamidate, Yoshiyuki Kajiura
  • Method and device for producing bellows
    Publication number: 20010039822
    Abstract: In order to produce a metal bellows of a length of “Ls” for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a length of “L” that is longer than the length “Ls”. Then, the blank is axially compressed by a length of “a”, so that the compressed blank has a length of “L−a” that is shorter than the length “Ls”. Then, the compressed blank is axially expanded so that the expanded blank has a length of “L−a+b” that is longer than the length “Ls”. Then, the force that has been applied to the blank is removed, and then the treated blank is left in room temperature until the time when the treated blank becomes to have the length of “Ls” due to the spring-back phenomenon.
    Type: Application
    Filed: July 9, 2001
    Publication date: November 15, 2001
    Inventors: Tadahiro Minamidate, Yoshiyuki Kajiura
  • Method and device for producing bellows
    Patent number: 6282939
    Abstract: In order to produce a metal bellows of a length of “Ls” for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a length of “L” that is longer than the length “Ls”. Then, the blank is axially compressed by a length of “a”, so that the compressed blank has a length of “L−a” that is shorter than the length “Ls”. Then, the compressed blank is axially expanded so that the expanded blank has a length of “L−a+b” that is longer than the length “Ls”. Then, the force that has been applied to the blank is removed, and then the treated blank is left in room temperature until the time when the treated blank becomes to have the length of “Ls” due to the spring-back phenomenon.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: September 4, 2001
    Assignee: Calsonic Kansei Corporation
    Inventors: Tadahiro Minamidate, Yoshiyuki Kajiura