Patents by Inventor Chyi-Ming Hwang

Chyi-Ming Hwang 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: 5595204
    Abstract: A multi-use collapsible sun-shade tent consists of a pair of lateral beams and two pairs of lengthwise beams, and four vertical posts and a sun-shade cloth, collapsibly combined together by means of connecters at four corners where the lateral beams and the lengthwise beams meet and at an intermediate portion where two half portions of each lateral beam are connected with each other. The four posts support the four corners where the lateral beams and the lengthwise beams meet and are structured able to be adjusted in height. The sun-shade cloth is held between the two lateral beams and possible to be wound around one collapsed half lateral beam.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: January 21, 1997
    Inventor: Chyi-Ming Hwang
  • Patent number: 5271446
    Abstract: A multi-purpose automatically rewindable sun-shade devised to have a quite long resilient curtain which is wound around a winding tubular shaft when it is not in use. The curtain may be pulled out to a needed length for use and rewound automatically on the winding shaft by twisted coil springs. The sun-shade comprises an elongated winding tubular shaft for winding a long curtain thereon, two immovable rods adapted to extend in the interior of the winding shaft, two coil springs fitting around the immovable rods in the winding shaft to generate tension when twisted. The tension force rotates the winding shaft to rewind the curtain after use. The shade has two sleeves assembled around the winding shaft and forming a central through hole for a square end of each of the immovable rods to pass through to engage a central square hole in each of two shaft caps assembled with the two sleeves so that the sleeves and the winding shaft can rotate together between the two shaft caps.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: December 21, 1993
    Inventor: Chyi-Ming Hwang