Patents by Inventor Jack Chai

Jack Chai 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).

  • Handheld power tool having a drive motor operable via a manual switch
    Patent number: 9821446
    Abstract: In a handheld power tool having a drive motor operable via a manual switch for driving a drive body which is associated with a mechanical percussion mechanism and coupled to a percussion member for driving an output shaft provided with a tool receptacle, and an operating mode switchover element which is designed to switch over between a normal operation and a percussion operation of the percussion mechanism and which is coupled to the drive body being associated with the drive body, an operating device is provided for operating the operating mode switchover element which is coupled to the manual switch and which is designed to enable a switchover of the operating mode switchover element between normal operation and the percussion operation of the percussion mechanism by operating the manual switch.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: November 21, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Jack Chai, Chuan Cheong Yew, Chun Chee Loh, Sim Teik Yeoh