Patents by Inventor Hirotsugu Kuroda

Hirotsugu Kuroda 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).

  • Patent number: 10940775
    Abstract: A release lever includes: a release pressing portion pressing a portion around a lock portion of a plate spring to release an engagement of the lock portion with a locked portion; an operation portion located in a front side of the release lever and operated by a lock release operation of an operation handle; and a swing fulcrum portion provided between the release pressing portion and the operation portion. The plate spring integrally includes: a base including the swing fulcrum portion and fixed to an upper rail; a rear biasing portion located behind the base in a vehicle front-rear direction and biasing the lock portion in a lock direction; and a front biasing portion located in front of the base in the vehicle front-rear direction and biasing the operation handle upward. The front biasing portion has a biasing force smaller than that of the rear biasing portion.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: March 9, 2021
    Assignee: TF-METAL CO., LTD.
    Inventors: Kazuki Tamaki, Hirotsugu Kuroda, Fumisato Mase, Shunsuke Kuroda
  • Publication number: 20190283630
    Abstract: A release lever includes: a release pressing portion pressing a portion around a lock portion of a plate spring to release an engagement of the lock portion with a locked portion; an operation portion located in a front side of the release lever and operated by a lock release operation of an operation handle; and a swing fulcrum portion provided between the release pressing portion and the operation portion. The plate spring integrally includes: a base including the swing fulcrum portion and fixed to an upper rail; a rear biasing portion located behind the base in a vehicle front-rear direction and biasing the lock portion in a lock direction; and a front biasing portion located in front of the base in the vehicle front-rear direction and biasing the operation handle upward. The front biasing portion has a biasing force smaller than that of the rear biasing portion.
    Type: Application
    Filed: February 27, 2019
    Publication date: September 19, 2019
    Inventors: Kazuki TAMAKI, Hirotsugu KURODA, Fumisato MASE, Shunsuke KURODA
  • Patent number: 4474906
    Abstract: A carbon fiber coated with 0.3 to 10 wt. % of a polyurethane resin is disclosed. Also disclosed is a carbon fiber reinforced thermoplastic resin composition consisting preferably of 3 to 60 wt. % of such carbon fiber and 97 to 40 wt. % of a thermoplastic matrix resin. Said carbon fiber has increased gathering properties and adhesion strength to facilitate the mixing with the thermoplastic matrix resin and provides a resin molding having improved mechanical properties, especially increased impact strength.
    Type: Grant
    Filed: January 20, 1983
    Date of Patent: October 2, 1984
    Assignees: Toho Beslon Co., Ltd., Teijin Chemicals Ltd.
    Inventors: Katsumi Nakama, Hiroaki Yamashita, Hirotsugu Kuroda, Mikio Kashimoto