Patents by Inventor Takahiko UMEZAWA

Takahiko UMEZAWA 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).

  • Multiple bicycle sprocket assembly
    Patent number: 9994285
    Abstract: A multiple bicycle sprocket assembly is basically provided with a first sprocket supporting member and a second sprocket supporting member. A first sprocket is coupled to one of a first bicycle inbound facing side and a first bicycle outbound facing side of the first sprocket supporting member, and is a separate member therefrom. A second sprocket is coupled to one of a second bicycle inbound facing side and a second bicycle outbound facing side of the second sprocket supporting member, and is a separate member therefrom. At least one fastening member connects the first sprocket supporting member and the second sprocket supporting member, and is a separate member therefrom. At least one hub engaged sprocket is free from connection with the at least one fastening member, and is a separate member from the first and second sprocket supporting members.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 12, 2018
    Assignee: Shimano Inc.
    Inventors: Koji Tokuyama, Takahiko Umezawa
  • MULTIPLE BICYCLE SPROCKET ASSEMBLY
    Publication number: 20170361901
    Abstract: A multiple bicycle sprocket assembly is basically provided with a first sprocket supporting member and a second sprocket supporting member. A first sprocket is coupled to one of a first bicycle inbound facing side and a first bicycle outbound facing side of the first sprocket supporting member, and is a separate member therefrom. A second sprocket is coupled to one of a second bicycle inbound facing side and a second bicycle outbound facing side of the second sprocket supporting member, and is a separate member therefrom. At least one fastening member connects the first sprocket supporting member and the second sprocket supporting member, and is a separate member therefrom. At least one hub engaged sprocket is free from connection with the at least one fastening member, and is a separate member from the first and second sprocket supporting members.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 21, 2017
    Inventors: Koji TOKUYAMA, Takahiko UMEZAWA