Patents by Inventor Sam Yip

Sam Yip 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).

  • Patent number: 6189889
    Abstract: A portable backstop device for enabling an individual to practice throwing and pitching baseballs without a catcher. The backstop device includes a front panel and a back panel which are attached to each other to form a backstop member. A portion of the back panel extends beyond a bottom edge of the front panel, so that the portion can be folded such that a bottom edge of the portion of the back panel can be detachably connected to the bottom edge of the front panel to define a pocket for collecting thrown and pitched baseballs. A rectangular shaped aperture formed in the front panel of the portable backstop member enables an individual to practice throwing balls and strikes without an umpire. Balls entering the aperture are collected in the pocket thus, saving time and energy spent in retrieving the thrown baseballs and also substantially prevents the baseballs from getting scuffed from hitting backfences and the like.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: February 20, 2001
    Inventor: Sam Yip