The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2021
Filed:
May. 14, 2018
Black & Decker Inc., New Britain, CT (US);
Brent Austin Kuehne, Red Lion, PA (US);
Gao Jian, Jiangsu, CN;
Wang Guoqing, Jiangsu, CN;
Zhang Yukun, Jiangsu, CN;
Chen Jianhua, Jiangsu, CN;
Zhu Wen, Jiangsu, CN;
Wu Yanmin, Jiangsu, CN;
Lu Xiaoli, Jiangsu, CN;
Black & Decker Inc., New Britain, CT (US);
Abstract
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.