Patents by Inventor Masaaki Okagawa

Masaaki Okagawa 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).

  • Rotating part supporting structure for engine
    Patent number: 10753313
    Abstract: Disclosed herein is a support structure for a rotary part of an engine (2). The support structure includes crank journal bearing metals (14) and crank pin bearing metals (24, 124). Each crank journal bearing metal (14) includes chamfers (16) and crowned portions (17). On the other hand, each crank pin bearing metal (24, 124) includes chamfers (26) and no crowned portion or crowned portions (127) on its inner peripheral surface. The crowned portions (127) are inclined at a smaller angle than the crowned portions (17).
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: August 25, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Masaaki Okagawa, Satoshi Imamura, Shohei Kimura
  • ROTATING PART SUPPORTING STRUCTURE FOR ENGINE
    Publication number: 20190048823
    Abstract: Disclosed herein is a support structure for a rotary part of an engine (2). The support structure includes crank journal bearing metals (14) and crank pin bearing metals (24, 124). Each crank journal bearing metal (14) includes chamfers (16) and crowned portions (17). On the other hand, each crank pin bearing metal (24, 124) includes chamfers (26) and no crowned portion or crowned portions (127) on its inner peripheral surface. The crowned portions (127) are inclined at a smaller angle than the crowned portions (17).
    Type: Application
    Filed: March 10, 2017
    Publication date: February 14, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Masaaki OKAGAWA, Satoshi IMAMURA, Shohei KIMURA
  • Needle roller bearing, crank shaft supporting structure, and split method of outer ring of needle roller bearing
    Publication number: 20070116393
    Abstract: A needle roller bearing comprises an outer ring having a plurality of outer ring members split by split lines extending in the axial direction of the bearing, and a plurality of needle rollers arranged on the track surface of the outer ring so that they can roll. The outer ring is split by a load applied to its end surface in the direction crossing the end surface.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 24, 2007
    Inventors: Shinji Oishi, Makoto Nishikawa, Akihiko Katayama, Takanori Terada, Takaaki Sakai, Katsufumi Abe, Masaaki Okagawa