Patents by Inventor Tomohiro EJIRI

Tomohiro EJIRI 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).

  • Power tool
    Patent number: 11554476
    Abstract: The power tool has a housing portion that accommodates a motor (6) and a cooling fan (8), and a handle portion (5B). Air suction ports (41, 42a-42d and 43) are arranged in the housing portion, and outside air is sucked into the housing portion by the rotation of the cooling fan. In the power tool, a passage (52) is formed in the handle portion, the passage guiding cooling air from the air suction port (41) rearward away from the cooling fan; the cooling air is caused to flow from an opening (53) into the handle portion to cool a heat-generation mechanism included in a switch mechanism (60); and the cooling air is again returned to the housing portion. In the housing portion, the cooling air is discharged to the outside from air discharge ports (13a and 13b) together with the cooling air from the other air suction ports.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: January 17, 2023
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Tomohiro Ejiri, Masahiro Fujiwara
  • POWER TOOL
    Publication number: 20200331138
    Abstract: The power tool has a housing portion that accommodates a motor (6) and a cooling fan (8), and a handle portion (5B). Air suction ports (41, 42a-42d and 43) are arranged in the housing portion, and outside air is sucked into the housing portion by the rotation of the cooling fan. In the power tool, a passage (52) is formed in the handle portion, the passage guiding cooling air from the air suction port (41) rearward away from the cooling fan; the cooling air is caused to flow from an opening (53) into the handle portion to cool a heat-generation mechanism included in a switch mechanism (60); and the cooling air is again returned to the housing portion. In the housing portion, the cooling air is discharged to the outside from air discharge ports (13a and 13b) together with the cooling air from the other air suction ports.
    Type: Application
    Filed: November 30, 2018
    Publication date: October 22, 2020
    Applicant: Koki Holdings Co., Ltd.
    Inventors: Tomohiro EJIRI, Masahiro FUJIWARA
  • Band saw
    Patent number: D951735
    Type: Grant
    Filed: August 23, 2020
    Date of Patent: May 17, 2022
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Takeshi Taniguchi, Shinichi Kakefuda, Masahiro Fujiwara, Tomohiro Ejiri