Patents by Inventor Christopher A. Tsui

Christopher A. Tsui 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: 5806933
    Abstract: A head rest and restraint assembly has, as its principal component, a padded, shaped arm which has one end thereof contained in a mounting member. The contained end has a splined portion thereon which is adapted to mate with an interior splined portion of the mounting member, which comprises a hollow cylinder. Adjustment of the angular arm is accomplished by pushing the end of the arm into the cylinder against the force of a coil sprint until the splines dis-engage, allowing rotation of the arm, when the arm is released, the spring forces the splines into re-engagement, thereby fixing the angular orientation of the arm. Pairs of arms mounted in brackets, for example, can be used with existing vehicular headrests, or a replacement or new head rest may be formed with bores to accept and hold the mounting means.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: September 15, 1998
    Inventors: Leslie Tsui, Christopher A. Tsui