Patents by Inventor Yushi FUKUOKA

Yushi FUKUOKA 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).

  • Technique for driving fan of battery charger
    Patent number: 11721987
    Abstract: A battery charger in one aspect of the present disclosure includes a first attachment portion, a second attachment portion, a first converter, a second converter, a fan, a first control circuit, a second control circuit, and a signal output circuit. The first control circuit (i) controls the first converter and (ii) transmits a command to drive the fan in response to a first drive condition being fulfilled. The second control circuit (i) controls the second converter and (ii) transmits a command to drive the fan in response to a second drive condition being fulfilled. The signal output circuit outputs a drive signal in response to the first control circuit and/or the second control circuit transmitting the command(s) to drive the fan. The fan feeds a cooling air flow to the first convertor and the second converter in response to receiving the drive signal.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: August 8, 2023
    Assignee: MAKITA CORPORATION
    Inventor: Yushi Fukuoka
  • TECHNIQUE FOR DRIVING FAN OF BATTERY CHARGER
    Publication number: 20220209561
    Abstract: A battery charger in one aspect of the present disclosure includes a first attachment portion, a second attachment portion, a first converter, a second converter, a fan, a first control circuit, a second control circuit, and a signal output circuit. The first control circuit (i) controls the first converter and (ii) transmits a command to drive the fan in response to a first drive condition being fulfilled. The second control circuit (i) controls the second converter and (ii) transmits a command to drive the fan in response to a second drive condition being fulfilled. The signal output circuit outputs a drive signal in response to the first control circuit and/or the second control circuit transmitting the command(s) to drive the fan. The fan feeds a cooling air flow to the first convertor and the second converter in response to receiving the drive signal.
    Type: Application
    Filed: December 21, 2021
    Publication date: June 30, 2022
    Applicant: MAKITA CORPORATION
    Inventor: Yushi FUKUOKA