Patents by Inventor Yew-Sia Liem

Yew-Sia Liem 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).

  • Carriage preloader and carriage system having a preloader
    Patent number: 7396172
    Abstract: A carriage system for a printing apparatus is disclosed. The carriage system includes a movable carriage for carrying at least one ink pen, a carriage rod on which the carriage is rotatably mounted, an anti-rotation rail that is adjacent to one end of the carriage to prevent the rotation of the carriage in one direction, and a spring-loaded preloader coupled to an underside of the carriage to prevent the rotation of the carriage in the opposite direction and to urge the carriage against the anti-rotation rail. The preloader includes a preloader body made of a nonmetallic material, a roller operable to roll along a surface below the carriage, and a resilient spring.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: July 8, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ling-Hwee Ong, Ai-Meng Cheah, Hoong-Wai Wong, Wing-Kong Lo, Yew-Sia Liem, Raghuveer Mudambi Srinivasan
  • Carriage preloader and carriage system having a preloader
    Publication number: 20070065214
    Abstract: A carriage system for a printing apparatus is disclosed. The carriage system includes a movable carriage for carrying at least one ink pen, a carriage rod on which the carriage is rotatably mounted, an anti-rotation rail that is adjacent to one end of the carriage to prevent the rotation of the carriage in one direction, and a spring-loaded preloader coupled to an underside of the carriage to prevent the rotation of the carriage in the opposite direction and to urge the carriage against the anti-rotation rail. The preloader includes a preloader body made of a nonmetallic material, a roller operable to roll along a surface below the carriage, and a resilient spring.
    Type: Application
    Filed: September 21, 2005
    Publication date: March 22, 2007
    Inventors: Ling-Hwee Ong, Ai-Meng Cheah, Hoong-Wai Wong, Wing-Kong Lo, Yew-Sia Liem, Raghuveer Mudambi Srinivasan