Patents by Inventor Hirofumi Takai

Hirofumi Takai 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).

  • Gearbox and method for assembling same
    Patent number: 10066730
    Abstract: A transmission includes a fork mechanism in which a plurality of fork rods to which a plurality of shift forks are connected are each attached to a pedestal so as to be moveable in an axial direction. An assembly guide portion is disposed on the pedestal and a guide pin is erected on a clutch housing. As a result, even in cases where an input shaft and a main shaft, on which driving and driven gears and synchro devices are assembled, are assembled on the clutch housing in a state that the driving and driven gears are engaged and, thereafter the fork mechanism is assembled on this clutch housing, the assembly of the fork mechanism on the clutch housing can be easily performed.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 4, 2018
    Assignees: Aichi Machine Industry, Co., Ltd., Atsumitec Co., Ltd.
    Inventors: Masatoshi Hada, Hirofumi Takai, Akio Muto, Toshihiro Nakajima, Yuji Hijiriyama, Kenji Matsuda, Kazufumi Hosoda
  • GEARBOX AND METHOD FOR ASSEMBLING SAME
    Publication number: 20170292600
    Abstract: A transmission includes a fork mechanism in which a plurality of fork rods to which a plurality of shift forks are connected are each attached to a pedestal so as to be moveable in an axial direction. An assembly guide portion is disposed on the pedestal and a guide pin is erected on a clutch housing. As a result, even in cases where an input shaft and a main shaft, on which driving and driven gears and synchro devices are assembled, are assembled on the clutch housing in a state that the driving and driven gears are engaged and, thereafter the fork mechanism is assembled on this clutch housing, the assembly of the fork mechanism on the clutch housing can be easily performed.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 12, 2017
    Inventors: Masatoshi HADA, Hirofumi TAKAI, Akio MUTO, Toshihiro NAKAJIMA, Yuji HIJIRIYAMA, Kenji MATSUDA, Kazufumi HOSODA
  • Plate roofing material
    Patent number: 5293727
    Abstract: A plate roofing material is divided into an exterior portion which is exposed when a roof is covered with a plate roofing material and an overlap portion which is concealed under an exterior portion of a plate roofing material superimposed on the overlap portion of the plate roofing material. At least one longitudinal groove is formed in the surface of the exterior portion. The longitudinal groove has wide side surface parts alternating with narrow side surface parts with sidewalls formed of a plurality of stepped portions. The longitudinal groove has a linear bottom part having an approximately constant depth and is approximately V-shaped in cross section.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: March 15, 1994
    Assignee: Daiken Kogyo K.K.
    Inventors: Kenichi Yoshimoto, Kazuhiro Sakamoto, Tadashi Akiyama, Hirofumi Takai, Tomomi Nagano, Mitsuji Hashimoto, Kozo Tamamura