Patents by Inventor Houn I. Chang

Houn I. Chang 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: 5881512
    Abstract: Disclosed is a precasted wall/column module including a hollow body formed from a four-side outer frame and an inscribed round pipe. The outer frame has an upper end forming a first axially projected flange extending along an inner edge of the upper end and a lowered outer edge extending around the first flange, and a lower end forming a second axially projected flange extending along an outer edge of the lower end and a lowered inner edge extending along an inner side of the second flange. Axially extended insertion holes are correspondingly formed at every corners of the upper and lower ends to receive insertion bars for connecting the modules to one another. A thinned area can be selectively provided on either side of the outer frame. Two semicircular openings are separately formed at upper and lower edges of each thinned area and a plurality of round holes are spaced between the two semicircular openings.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: March 16, 1999
    Inventor: Houn-I Chang
  • Patent number: 5855102
    Abstract: Disclosed is a molded brick module including two opposite outer surface portions and a middle connecting portion. The surface portion each is integrally formed from two offset strata, such that two pairs of adjacent edges of the outer stratum respectively project beyond and withdraw from two corresponding pairs of adjacent edges of the inner stratum. Engagement of the projected edges on one molded brick module with the corresponding withdrawn edges on the other molded brick module permits two modules to fit together. Cylinders with insertion holes are provided on inner side of two opposite inner strata. The connecting portion has a concavo-concave cross section and includes a central connecting circle and two side connecting semicircles to form communicable passages in the brick module for mounting conduits, bar reinforcements, etc. and for grouting concrete. Epoxy resin may be applied on the surface portions for paving the modules with tiles.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: January 5, 1999
    Inventor: Houn-I Chang
  • Patent number: 5082230
    Abstract: An adjusting device includes a channel fixed to a rear surface of a frame. A slot is longitudinally formed in a rear surface of the channel. A guide is slidably received in the channel. A lug is formed on the guide and extends outward from the slot. A lug is formed on a hanger. The ends of a link are coupled to the lugs by screws and nuts so that the relative angles between the channel and the link and between the link and the hanger can be adjusted by the screws and nuts, and so that the frame can be easily adjusted to a suitable angle relative to a support surface.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: January 21, 1992
    Inventor: Houn I. Chang