Patents by Inventor Susumu Mamiya

Susumu Mamiya 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).

  • Half bearing with grooves preventing leakage of lubricating oil
    Patent number: 6695482
    Abstract: A half bearing constituting a cylindrical plain bearing for supporting a shaft for rotation when two of the half bearings are combined together. The half bearing has two circumferential ends each of which has a plurality of circumferential grooves without formation of any crush relief surface. The grooves extend substantially over an overall circumferential dimension of the half bearing and include portions located at both circumferential ends of the half bearing respectively. Each portion has a larger axially sectional area than the grooves formed in a portion of the half bearing mainly subjected to load during rotation of the shaft.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: February 24, 2004
    Assignee: Daido Metal Company Ltd.
    Inventors: Masayuki Niwa, Yoshitaka Ito, Mitsuru Sugita, Akira Ono, Susumu Mamiya, Masaaki Sakamoto
  • Half bearing with grooves preventing leakage of lubricating oil
    Publication number: 20020085779
    Abstract: A half bearing constituting a cylindrical plain bearing for supporting a shaft for rotation when two of the half bearings are combined together. The half bearing has two circumferential ends each of which has a plurality of circumferential grooves without formation of any crush relief surface.
    Type: Application
    Filed: December 26, 2001
    Publication date: July 4, 2002
    Applicant: DAIDO METAL COMPANY LTD.
    Inventors: Masayuki Niwa, Yoshitaka Ito, Mitsuru Sugita, Akira Ono, Susumu Mamiya, Masaaki Sakamoto
  • Half bearing with grooves preventing leakage of lubricating oil
    Patent number: RE39613
    Abstract: A half bearing constituting a cylindrical plain bearing for supporting a shaft for rotation when two of the half bearings are combined together. The half bearing has two circumferential ends each of which has a plurality of circumferential grooves without formation of any crush relief surface. The grooves extend substantially over an overall circumferential dimension of the half bearing and include portions located at both circumferential ends of the half bearing respectively. Each portion has a larger axially sectional area than the grooves formed in a portion of the half bearing mainly subjected to load during rotation of the shaft.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: May 8, 2007
    Assignee: Daido Metal Co., Ltd.
    Inventors: Masayuki Niwa, Yoshitaka Ito, Mitsuru Sugita, Akira Ono, Susumu Mamiya, Masaaki Sakamoto