Patents by Inventor Han-Hsiang Chang

Han-Hsiang 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: 10906162
    Abstract: A screw clamping device includes a body, a pressing unit, a resilient unit, a clamping unit and a connecting unit. The body is a hollow-core cylinder, is subject to axial penetration of a screwdriver, and is movable axially in synchrony with rotation of the screwdriver. The pressing unit is disposed on the body and adapted to press against a surface of a working object. The resilient unit is disposed between the body and the pressing unit. The clamping unit is rotatably connected to the body. The connecting unit has one end connected to the pressing unit and the other end connected to the clamping unit. While the body is moving axially, the connecting unit drives the clamping unit to rotate and thereby clamp or loosen screws.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: February 2, 2021
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Han-Hsiang Chang, Kui-Chin Liu, Yung-Lin Lin
  • Publication number: 20190105763
    Abstract: A screw clamping device includes a body, a pressing unit, a resilient unit, a clamping unit and a connecting unit. The body is a hollow-core cylinder, is subject to axial penetration of a screwdriver, and is movable axially in synchrony with rotation of the screwdriver. The pressing unit is disposed on the body and adapted to press against a surface of a working object. The resilient unit is disposed between the body and the pressing unit. The clamping unit is rotatably connected to the body. The connecting unit has one end connected to the pressing unit and the other end connected to the clamping unit. While the body is moving axially, the connecting unit drives the clamping unit to rotate and thereby clamp or loosen screws.
    Type: Application
    Filed: January 18, 2018
    Publication date: April 11, 2019
    Inventors: Han-Hsiang Chang, Kui-Chin Liu, Yung-Lin Lin
  • Publication number: 20150047939
    Abstract: A suitcase with a telescopic handle device capable of locating a camera includes a U shape handle with a camera locating unit for locating a camera. The camera locating unit has a driving shaft having a ball at one end thereof for combining to the U shape handle so that the driving shaft is rotatable multiple-directionally with respect to the U shape handle by using the ball as a fulcrum. A suitcase using the U shape handle is included. The U shape handle is telescopic with respect to the case of the suitcase. By the structures, no tripod is carried in travel. In taking pictures, it only needs to place a camera on the platform and the bag is placed to a desired location. Then the user can take pictures as desired.
    Type: Application
    Filed: August 13, 2013
    Publication date: February 19, 2015
    Inventor: Han-Hsiang Chang
  • Patent number: 8220473
    Abstract: A foldable umbrella capable of auto-adjustment of the umbrella cloth comprises: a plurality of foldable ribs; an umbrella pole for connecting one ends of the ribs; an umbrella cloth expanded along a space spanned by the ribs; at least one connection portion located on an inner side of the umbrella cloth and two adjacent ribs. Each connection portion includes two L-shaped retainers and one connecting unit; and each L-shaped retainer is made of flexible and bendable material. When the umbrella is folded, by the clamping effect of the two L-shaped retainers of one connection portion, the umbrella cloth will present a smooth folded shape so that the umbrella cloth is folded along the umbrella pole easily. Thus the umbrella cloth can be folded easily, rapidly, and directly with a beautiful outlook and a small size. It is difficult to be damaged.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: July 17, 2012
    Inventor: Han-Hsiang Chang
  • Publication number: 20120163647
    Abstract: A microphone and earphone set with functions of wire arrangement and winding has at least one earphone which is connected with an audio wire and a wire arranging box which is a hollow casing. The audio wire movably passes through the box. When the audio wire of the earphone is stored completely, the earphone rests upon the box to be fixed thereon. A microphone is installed in the box and is extended out with a signal wire. A plug serves to be connected with the signal wire and the audio wire for signal transmission and power supply. The wires of the earphone and microphone can be arranged easily.
    Type: Application
    Filed: April 19, 2011
    Publication date: June 28, 2012
    Inventor: Han-Hsiang Chang
  • Publication number: 20120160285
    Abstract: A foldable umbrella capable of auto-adjustment of the umbrella cloth comprises: a plurality of foldable ribs; an umbrella pole for connecting one ends of the ribs; an umbrella cloth expanded along a space spanned by the ribs; at least one connection portion located on an inner side of the umbrella cloth and two adjacent ribs. Each connection portion includes two L-shaped retainers and one connecting unit; and each L-shaped retainer is made of flexible and bendable material. When the umbrella is folded, by the clamping effect of the two L-shaped retainers of one connection portion, the umbrella cloth will present a smooth folded shape so that the umbrella cloth is folded along the umbrella pole easily. Thus the umbrella cloth can be folded easily, rapidly, and directly with a beautiful outlook and a small size. It is difficult to be damaged.
    Type: Application
    Filed: December 27, 2010
    Publication date: June 28, 2012
    Inventor: Han-Hsiang Chang