Patents by Inventor Takehito Hiraga

Takehito Hiraga 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).

  • Drive power transmission device, image forming apparatus and process cartridge
    Patent number: 6671475
    Abstract: A transmission mechanism for transmitting rotation of a driving source in a main body to an object mounted on the main body for receiving the rotation, the transmission mechanism comprising a plurality of couplings provided at different positions along an axial direction of a rotating axis; wherein each of the couplings comprises, a male coupling member having a plurality of protrusions provided at an identical internal on an outer circumferential surface of the rotating axis; and a female coupling member having a plurality of protrusions for engaging with the male coupling's protrusions.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: December 30, 2003
    Assignee: Konica Corporation
    Inventors: Kazunori Katada, Masami Maruko, Naoto Tokutake, Takehito Hiraga, Satoshi Hamaya, Susumu Tashiro
  • Drive power transmission device, image forming apparatus and process cartridge
    Publication number: 20010008590
    Abstract: A transmission mechanism for transmitting rotation of a driving source in a main body to an object mounted on the main body for receiving the rotation, the transmission mechanism comprising a plurality of couplings provided at different positions along an axial direction of a rotating axis; wherein each of the couplings comprises, a male coupling member having a plurality of convex elements provided at an identical internal on an outer circumferential surface of the rotating axis; and a female coupling member having a plurality of concave elements for engaging with the convex elements.
    Type: Application
    Filed: January 12, 2001
    Publication date: July 19, 2001
    Inventors: Kazunori Katada, Masami Maruko, Naoto Tokutake, Takehito Hiraga, Satoshi Hamaya, Susumu Tashiro