Patents by Inventor Rintaro Kajiwara

Rintaro Kajiwara 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).

  • Fan rotor blade and fan
    Patent number: 9376917
    Abstract: A fan rotor blade includes a blade body constructed of a composite material, a blade root constructed of the composite material, and a sheath attached to a leading edge of the blade body. The sheath includes a sheath main body and a pair of joint flanges, and is segmented into a sheath base segment and a sheath top segment. The sheath top segment has a longer length than a length of the sheath base segment along a span direction. A sheath length of the sheath main body at an assumed impact position with an obstacle is not shorter than 10% chord and not longer than 60% chord. A sheath length of the sheath along an end edge of the fan rotor blade is not shorter than 40% chord. The fan rotor blade possesses sufficient impact resistance and can be simplified and light-weighted.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: June 28, 2016
    Assignee: IHI Corporation
    Inventors: Takeshi Murooka, Hiroshi Kuroki, Rintaro Kajiwara, Kenro Obuchi
  • FAN ROTOR BLADE AND FAN
    Publication number: 20130111908
    Abstract: A fan rotor blade includes a blade body constructed of a composite material, a blade root constructed of the composite material, and a sheath attached to a leading edge of the blade body. The sheath includes a sheath main body and a pair of joint flanges, and is segmented into a sheath base segment and a sheath top segment. The sheath top segment has a longer length than a length of the sheath base segment along a span direction. A sheath length of the sheath main body at an assumed impact position with an obstacle is not shorter than 10% chord and not longer than 60% chord. A sheath length of the sheath along an end edge of the fan rotor blade is not shorter than 40% chord. The fan rotor blade possesses sufficient impact resistance and can be simplified and light-weighted.
    Type: Application
    Filed: July 12, 2011
    Publication date: May 9, 2013
    Applicant: IHI Corporation
    Inventors: Takeshi Murooka, Hiroshi Kuroki, Rintaro Kajiwara, Kenro Obuchi