Patents by Inventor Yukiyoshi Fukuda

Yukiyoshi Fukuda 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).

  • Reciprocal rotation mechanism of engine
    Patent number: 10012285
    Abstract: In order to reduce bending vibration of a connecting rod, a dynamic absorber (50) configured to reduce the bending vibration of the connecting rod (10) is provided on a piston (1).
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: July 3, 2018
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasunori Kanda, Tsunehiro Mori, Masatoshi Nitta, Yukiyoshi Fukuda
  • Piston structure for engine
    Patent number: 9926998
    Abstract: An engine piston structure includes: a piston (1); a connecting rod (10) having a small end part (10a) coupled to the piston (1), and having a large end part (10b) coupled to a crankshaft; a piston pin (2) through which the piston (1) and the small end part (10a) of the connecting rod (10) are coupled together and which has a hollow cross section; and at least one dynamic vibration absorber (20) provided inside the piston pin (2) to reduce resonance of the piston (1), the piston pin (2), and the small end part (10a) of the connecting rod (10) in combination with respect to the large end part (10b) of the connecting rod (10) during a combustion stroke.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: March 27, 2018
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasunori Kanda, Tsunehiro Mori, Yasuhiro Sudou, Masakazu Kikuchi, Kazuo Toyoda, Tetsuya Hanzawa, Yukiyoshi Fukuda, Akira Sumitani, Masahiro Koizumi, Koichi Hirata, Shuji Takuma, Kouji Kubo, Kazuya Nishimori
  • RECIPROCAL ROTATION MECHANISM OF ENGINE
    Publication number: 20160298718
    Abstract: In order to reduce bending vibration of a connecting rod, a dynamic absorber (50) configured to reduce the bending vibration of the connecting rod (10) is provided on a piston (1).
    Type: Application
    Filed: August 20, 2015
    Publication date: October 13, 2016
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yasunori KANDA, Tsunehiro MORI, Masatoshi NITTA, Yukiyoshi FUKUDA
  • PISTON STRUCTURE FOR ENGINE
    Publication number: 20150219181
    Abstract: An engine piston structure includes: a piston (1); a connecting rod (10) having a small end part (10a) coupled to the piston (1), and having a large end part (10b) coupled to a crankshaft; a piston pin (2) through which the piston (1) and the small end part (10a) of the connecting rod (10) are coupled together and which has a hollow cross section; and at least one dynamic vibration absorber (20) provided inside the piston pin (2) to reduce resonance of the piston (1), the piston pin (2), and the small end part (10a) of the connecting rod (10) in combination with respect to the large end part (10b) of the connecting rod (10) during a combustion stroke.
    Type: Application
    Filed: August 9, 2013
    Publication date: August 6, 2015
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yasunori Kanda, Tsunehiro Mori, Yasuhiro Sudou, Masakazu Kikuchi, Kazuo Toyoda, Tetsuya Hanzawa, Yukiyoshi Fukuda, Akira Sumitani, Masahiro Koizumi, Koichi Hirata, Shuji Takuma, Kouji Kubo, Kazuya Nishimori
  • Light-alloy casting heat treatment method
    Patent number: 6214136
    Abstract: The film boiling state of a refrigerant is maintained for a time longer than in the prior art by t to lower the nuclear boiling start temperature to a temperature at which the material proof strength of a work exceeds thermal stress, thereby lowering the cooling rate of the work. In addition, by controlling the cooling rate in hardening, the film boiling state of the refrigerant is maintained to a temperature at which the material proof strength exceeds thermal stress, thereby cooling the work at a temperature equal to or higher than the critical cooling rate of the work.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: April 10, 2001
    Assignee: Mazda Motor Corporation
    Inventors: Kazuyuki Yoshimoto, Ryoji Abe, Yukihiro Sugimoto, Fuminori Ishimura, Yukio Yamamoto, Nobuyuki Oda, Yukiyoshi Fukuda, Toshio Miyatani, Hiroshi Kodama, Akihiro Nakano