Patents by Inventor Wen-Jen Wang

Wen-Jen 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: 7174943
    Abstract: An improved curtain hoisting apparatus is wedged to a left end of a track and mainly includes a gear located on the bottom of an anchor body. The gear has a spindle pin movable in an m-shaped channel formed on an inner side of a wedge plate. The spindle pin is allowed to move and anchor in a first channel of the m-shaped channel to loosen a curtain cord for hoisting the curtain panel to a selected elevation. Pulling the curtain cord one more time allows the spindle pin moving from the first channel towards a second channel until anchoring at an outer rim at the left side of the m-shaped channel to brake the curtain cord thereby to halt the curtain panel at the selected elevation. Pulling the curtain cord repeatedly, the curtain panel may be hoisted and halted alternately and easily at selected elevations.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: February 13, 2007
    Inventor: Wen-Jen Wang
  • Publication number: 20060191649
    Abstract: An improved curtain rolling buffer apparatus mainly includes a rolling means mounted to a left end of the track to allow the curtain hanging below the track to be extended by pulling once and retracted by pulling another time. A buffer means is located on the right end of the track and has a bushing housing a spring. When to extend or retract the curtain, the spring is turned clockwise and extended outwards, and runs idle outside an axle, and the elastic force of the spring is smaller than the pressure of lube oil so that the curtain is easier to be extended. On the contrary, when the spring is turned counterclockwise, it is tightened and drives the bushing to rotate together.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 31, 2006
    Inventor: Wen-Jen Wang
  • Publication number: 20060108077
    Abstract: An improved curtain hoisting apparatus is wedged to a left end of a track and mainly includes a gear located on the bottom of an anchor body. The gear has a spindle pin movable in an m-shaped channel formed on an inner side of a wedge plate. The spindle pin is allowed to move and anchor in a first channel of the m-shaped channel to loosen a curtain cord for hoisting the curtain panel to a selected elevation. Pulling the curtain cord one more time allows the spindle pin moving from the first channel towards a second channel until anchoring at an outer rim at the left side of the m-shaped channel to brake the curtain cord thereby to halt the curtain panel at the selected elevation. Pulling the curtain cord repeatedly, the curtain panel may be hoisted and halted alternately and easily at selected elevations.
    Type: Application
    Filed: November 24, 2004
    Publication date: May 25, 2006
    Inventor: Wen-Jen Wang