Patents Assigned to Junjiro Takekawa
  • Method of producing rocket combustors
    Patent number: 4584171
    Abstract: A method of producing rocket combustors wherein in forming an outer cylin by a powder metallurgical method on the outer side of a cylinder provided on its outer periphery with a cooling wall of channel construction having a plurality of grooves, a low-melting alloy is used as a filler to be filled into the grooves. It is also possible to form the outer cylinder after forming a Cu plating shell on the periphery of the inner cylinder filled with the low-melting alloy.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: April 22, 1986
    Assignees: National Aerospace Laboratories of Science & Technology Agency, Yoshimichi Masuda, Ryuzo Watanabe, Junjiro Takekawa, Sumitomo Electric Industries
    Inventors: Masayuki Niino, Nobuyuki Yatsuyanagi, Akinaga Kumakawa, Akio Suzuki, Masaki Sasaki, Hiromi Gomi, Hiroshi Sakamoto, Yoshimichi Masuda, Ryuzo Watanabe, Junjiro Takekawa, Yoshihiko Doi, Nobuhito Kuroishi, Yoshinobu Takeda, Shigeki Ochi
  • Method of producing rocket combustors
    Patent number: 4582678
    Abstract: A method of producing rocket combustors wherein in forming an outer cylin by a powder metallurgical method on the outer side of a cylinder provided on its outer periphery with a cooling wall of channel construction having a plurality of grooves (14), an Ni electroforming layer is formed on the outer side of the outer cylinder, and also a method of producing rocket combustors wherein an outer cylinder is of multilayer construction having two or more layers.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: April 15, 1986
    Assignees: National Aerospace Laboratories of Science & Technology Agency, Yoshimichi Masuda, Ryuzo Watanabe, Junjiro Takekawa, Sumitoro Electric Industries, Ltd.
    Inventors: Masayuki Niino, Akio Suzuki, Nobuyuki Yatsuyanagi, Akinaga Kumakawa, Masaki Sasaki, Hiroshi Tamura, Fumiei Ono, Yoshimichi Masuda, Ryuzo Watanabe, Junjiro Takekawa, Yoshihiko Doi, Nobuhito Kuroishi, Yoshinobu Takeda, Shigeki Ochi