Black Decker Inc.

Wu Yanmin

Brent Austin Kuehne

Zhang Yukun

Chen Jianhua

Lu Xiaoli

Wang Guoqing

Colin M Crosby

Jianhua Chen

Zhu Wen

Gao Jian

Tong Zheng

Wen Zhu

Guoquing Wang

Jian Gao

Lynn Weikel

Xiaolie Niu

A power tool includes a tool housing and a motor assembly received in the tool housing. The motor assembly has a rear end portion, a front end portion, and a motor output shaft. A transmission housing is coupled to the motor housing with a transmission received in the transmission housing, to which the motor output shaft is drivingly coupled. A partition assembly includes a rear cover covering a rear end portion of the transmission housing that faces the front end portion of the motor and a seal. The rear cover of the transmission housing, the front end portion of the motor, and the seal together define at least a first labyrinth path and a second labyrinth path therebetween configured to inhibit grease or dust migration between the transmission housing and the motor assembly.

Power tool with partition assembly between transmission and motor

A power tool includes a tool housing and a motor assembly received in the tool housing. The motor assembly has a rear end portion, a front end portion, and a motor output shaft. A transmission housing is coupled to the motor housing with a transmission received in the transmission housing, to which the motor output shaft is drivingly coupled. A partition assembly includes a rear cover covering a rear end portion of the transmission housing that faces the front end portion of the motor. The rear cover of the transmission housing and the front end portion of the motor together define at least a first labyrinth path and a second labyrinth path therebetween configured to inhibit grease or dust migration between the transmission housing and the motor assembly.

Growing community of inventors

Jiangsu, China

Wu Yanmin