Takefumi Furuta

Impact tool with a percussion mechanism whose impact wrench mode can be selectively enabled or disabled

Takefumi Furuta, Hidenori Nagasaka, 2005 .

Improved clutch mechanism for use in rotary tools with screw and drilling

Takefumi Furuta, Takao Kuroyanagi, 2001 .

Power tool with two gear boxes

Takefumi Furuta, Shinsuke Mori, Shingo Umemura, 1999 .