Patents by Inventor Leung Sik Yuen

Leung Sik Yuen 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).

  • External automatic flush helper
    Patent number: 8205275
    Abstract: An external automatic flush helper comprises a housing and fixing means for fixing the housing onto a toilet tank. Within the housing there are provided with a DC power supply, a controller powered by the DC power supply, an infrared sensor and a motor connected with the controller, and an actuating mechanism connected with the motor. An end actuator of the actuating mechanism is arranged in alignment with the button of the toilet tank. The end actuator can be actuated and move out of an opening in the housing when a user status is detected by the infrared sensor, and thus press the button of the toilet tank. Therefore, automatic flushing can be achieved contactlessly.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: June 26, 2012
    Inventor: Leung Sik Yuen
  • External Automatic Flush Helper
    Publication number: 20090113614
    Abstract: An external automatic flush helper comprises a housing and fixing means for fixing the housing onto a toilet tank. Within the housing there are provided with a DC power supply, a controller powered by the DC power supply, an infrared sensor and a motor connected with the controller, and an actuating mechanism connected with the motor. An end actuator of the actuating mechanism is arranged in alignment with the button of the toilet tank. The end actuator can be actuated and move out of an opening in the housing when a user status is detected by the infrared sensor, and thus press the button of the toilet tank. Therefore, automatic flushing can be achieved contactlessly.
    Type: Application
    Filed: July 3, 2008
    Publication date: May 7, 2009
    Inventor: Leung Sik Yuen