Patents by Inventor Antony Ching-Fong Liu

Antony Ching-Fong Liu 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: 5774917
    Abstract: A turn mattress includes a plurality of inflatable sacs juxtapositionally connected together within a mattress envelope, each inflatable sac being transverse to a longitudinal axis of the mattress and having a right cell and a left cell separated by a central diaphragm and respectively communicated with an air distributing system to be alternatively inflated or deflated for turning a patient ridden on the mattress from side to side, and a pair of restoring air bags each inherently formed and constantly inflated in each cell, whereby upon deflation of either cell, the restoring air bag as inflated will serve as a side guard for preventing a slipping of the patient away from the mattress laid on a hospital bed.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: July 7, 1998
    Inventor: Antony Ching-fong Liu
  • Patent number: 4830035
    Abstract: A foldable walker includes a pair of side walking legs pivotally mounted on a pair of T joints, a front transverse bar secured between the two T joints, a pair of foldable links each pivotally connected between each T joint and each side walking leg, and a pair of seesaw controllers each fixed on an outer tube of a link and seesawly biasing a locking button resiliently retained in an inner tube of the link, whereby upon the depressing of the button by the seesaw controller, the inner tube will be telescopically received within the outer tube when folding the side walking legs toward the front bar, thereby resulting in a simpler, quicker and more convenient folding operation of the walker.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: May 16, 1989
    Inventor: Antony Ching-Fong Liu