公开(公告)号：US20230358101A1

公开(公告)日：2023-11-09

申请号：US17777424

申请日：2020-10-15

Applicant: Techtronic Cordless GP

Inventor： Koon For Chung ,  Hui Jian Chen ,  Xiao Di Lan ,  Yan Jia Wang ,  Jonathan Robert Feldkamp ,  Shuai Shao ,  Grzegorz Kondro ,  Richard Michael Mcentyre ,  Gregory Scott Torrisi ,  John Eugene McCallum

IPC: E21B11/00 ,  E21B10/44 ,  B28D1/14

CPC classification number: E21B10/44 ,  B28D1/14 ,  E21B11/005 ,  B23B2226/75 ,  B23B2260/096 ,  B23B2260/122 ,  B23B2260/128

Abstract: Provided herein is an electric powered digging apparatus comprising: a powerhead, the power head comprises a motor and a gearbox; a handle frame, the powerhead is mounted onto the handle frame; and a drill bit, the drill bit is driven by the motor to rotate around a longitudinal axis, the electric power digging apparatus further comprises: a first safety mechanism, wherein the first safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal axis for an angle larger than a first threshold, and a second safety mechanism, wherein the second safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal drive axis at an angular speed larger than a second threshold FIG. 1