Patents by Inventor Chen Jianhua

Chen Jianhua has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • POWER TOOL WITH PARTITION ASSEMBLY BETWEEN TRANSMISSION AND MOTOR
    Publication number: 20240033893
    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 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.
    Type: Application
    Filed: October 6, 2023
    Publication date: February 1, 2024
    Inventors: Brent Austin Kuehne, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli, Colin CROSBY, Lynn Weikel, Tong ZHENG, Xiaojie Niu
  • Power tool with partition assembly between transmission and motor
    Patent number: 11813729
    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 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.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: November 14, 2023
    Assignee: BLACK & DECKER INC.
    Inventors: Brent Austin Kuehne, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli, Colin Crosby, Lynn Weikel, Tong Zheng, Xiaolie Niu
  • Power tool with partition assembly between transmission and motor
    Patent number: 11817757
    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 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.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: November 14, 2023
    Assignee: BLACK & DECKER INC.
    Inventors: Brent Austin Kuehne, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli
  • POWER TOOL WITH PARTITION ASSEMBLY BETWEEN TRANSMISSION AND MOTOR
    Publication number: 20210194312
    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 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.
    Type: Application
    Filed: March 4, 2021
    Publication date: June 24, 2021
    Inventors: Brent Austin KUEHNE, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli
  • POWER TOOL WITH PARTITION ASSEMBLY BETWEEN TRANSMISSION AND MOTOR
    Publication number: 20210107131
    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 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.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventors: Brent Austin Kuehne, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli, Colin CROSBY, Lynn Weikel, Tong ZHENG
  • Power tool with partition assembly between transmission and motor
    Patent number: 10971966
    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.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: April 6, 2021
    Assignee: Black & Decker Inc.
    Inventors: Brent Austin Kuehne, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli
  • POWER TOOL WITH PARTITION ASSEMBLY BETWEEN TRANSMISSION AND MOTOR
    Publication number: 20190348887
    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.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 14, 2019
    Inventors: Brent Austin Kuehne, Gao Jian, Wang Guoqing, Zhang Yukun, Chen Jianhua, Zhu Wen, Wu Yanmin, Lu Xiaoli