18746120. CORE DRILL (MAKITA CORPORATION)
CORE DRILL
Organization Name
Inventor(s)
Tomohiko Imae of Anjo-shi (JP)
CORE DRILL
This abstract first appeared for US patent application 18746120 titled 'CORE DRILL
Original Abstract Submitted
A core drill includes: a motor having a stator and a rotor, which is rotatable relative to the stator; a speed-reducing mechanism; an output shaft that, in the state in which a core bit is mounted thereon, is rotated by the rotational force of the rotor transmitted via the speed-reducing mechanism; and a battery-mounting part, on which a battery pack is mounted. A stator outer diameter, which is the outer diameter of a stator core of the stator, is 75 mm or more; and a stator length, which is the dimension of the stator core in an axial direction, is 30 mm or more.