Black Decker Inc.

Xiaolie Niu

Brent Austin Kuehne

Colin M Crosby

Tong Zheng

Lu Xiaoli

Zhang Yukun

Gao Jian

Chen Jianhua

Zhu Wen

Wang Guoqing

Wu Yanmin

Lynn Weikel

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

Growing community of inventors

Suzhou, China

Xiaolie Niu