Patents by Inventor Cherng-Fa Wang

Cherng-Fa Wang 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: 5996198
    Abstract: Disclosed is an apparatus for ribbing cloth venetian blind strips in an efficient and mass production manner. The apparatus includes a group of strip pressing mechanisms which hold a strip to be ribbed in place and define a reference plane for other mechanisms in the apparatus during the ribbing operation. After the strip is pressed in place, a tubular space opening mechanism is actuated to open front ends of two previously flattened tubular spaces at two sides of the strip. Thereafter, two tubular space expanding mechanisms pushes the strip from the two sides thereof to vertically expand the already partially opened tubular spaces, allowing ribs to be fed into and extended through the expanded tubular spaces by a rib conveying mechanism. The cloth strips for venetian blind can therefore be accurate, quickly ribbed at two sides in a mass production manner.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: December 7, 1999
    Inventors: Cherng-Fa Wang, Hsi-Chuan Chiou
  • Patent number: 5927172
    Abstract: Disclosed is a venetian blind cutting machine including a worktable on which a cylinder, multiple dies, a limiting mechanism, and a cutting tool connected to an output end of the cylinder are arranged. A die holder is fixed onto the worktable to hold selected dies. The dies are formed of sliding channels into which the cutting tool extends to slidably move. The cutting tool is formed of multiple blades in the same number as that of dies on the die holder. The limiting mechanism is adjustably located at one side of the dies to hold components of a venetian blind in place, so that the venetian blind can be accurately cut to desired dimensions by the blades of the cutting tool.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: July 27, 1999
    Inventor: Cherng-Fa Wang
  • Patent number: 5799557
    Abstract: A venetian blind cutting machine including a support framework, a cutter module replaceably mounted on a top of the support framework, two air cylinders for driving cutters mounted in the cutter module, two sets of quick couplings for connecting the air cylinders to an upper cutter, a strip cutter, and a lower cutter mounted in a cutter seat of the cutter module, a blind supporter pivotally connected to the support framework in front of the cutter module for stably supporting a venetian blind to be cut, and a blind locating assembly fixedly mounted behind the cutter module for adjustably deciding the length of the venetian blind to extend into the cutter module for cut. With the cutter module containing three cutters for an upper rail, strips, and a lower rail of the venetian blind and the two air cylinders connected to the cutters via the quick couplings, the cutters can be driven by the air cylinders to neatly cut the rails and strips of the blind by only one cut.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: September 1, 1998
    Inventor: Cherng-Fa Wang