Patents by Inventor Wu-Sung Chang

Wu-Sung 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).

  • Publication number: 20100038390
    Abstract: A water bottle cage for a bicycle includes an upper bracket and a lower bracket detachably mounted on the upper bracket. The upper bracket is provided with at least one engaging portion, and the lower bracket is provided with at least one engaging section detachably engaged with the at least one engaging portion of the upper bracket. The upper bracket and the lower bracket are made individually, so that each of the upper bracket and the lower bracket has a modularized structure. Thus, the type, color and pattern of the upper bracket and the lower bracket can be changed freely and selectively, thereby enhancing the aesthetic quality and reinforce the strength of the water bottle cage.
    Type: Application
    Filed: August 15, 2008
    Publication date: February 18, 2010
    Inventor: Wu-Sung Chang
  • Patent number: 5803443
    Abstract: A shock absorber including a fixed shaft, an adjustment shaft sleeved onto one end of the fixed shaft, an adjustment knob threaded onto the adjustment shaft, and a shock absorbing coil spring connected between the fixed shaft and the adjustment knob, wherein steel balls are moved in an annular groove on the adjustment knob around the adjustment shaft, and a cap is covered over the steel balls and having an upper Part retained between the inner diameter of the shock absorbing coil spring and the outer diameter of the adjustment shaft for permitting the shock absorbing coil spring to be compressed without being twisted when the adjustment knob is turned upwards.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: September 8, 1998
    Inventor: Wu-Sung Chang
  • Patent number: 5382037
    Abstract: A fork blade for a bicycle front fork includes a lower cylindrical casing, an upper cylindrical casing having a reduced bottom end inserted into the lower cylindrical casing, a forked tip member welded to the lower cylindrical casing at the bottom, a double end screw rod having a top end screwed up with locknuts to hold a buffer spring above a hollow screw member being fastened to the bottom end of the upper cylindrical casing and a bottom end connected to the forked tip member, a shock spring retained between the hollow screw member and the forked tip member, wherein the forked tip member has a circular upright wall welded to the inside wall of the lower cylindrical casing at the bottom and welding holes through the circular upright wall into which the melted metal for joining the forked tip member and the lower cylindrical casing fills.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: January 17, 1995
    Inventors: Wu-Sung Chang, Huan-Yang Huang
  • Patent number: 5367918
    Abstract: A bicycle front fork shock absorbing device includes a shock absorbing spring and a set of tubular elastomers mounted around a guide rod being linked to a headed locating screw rod in either fork blade of a bicycle front fork, the improvement including a plurality of protective caps mounted around the guide rod and separated by the tubular elastomer and the shock absorbing spring, a buffer spring received in a sleeve around the headed locating screw rod and retained between the head the headed locating screw rod and a lock screw, and wherein each protective cap has two recesses at two opposite sides respectively covered around either a tubular elastomer or the shock absorbing spring or the head of the headed locating screw rod.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: November 29, 1994
    Inventors: Wu-Sung Chang, Huan-Yang Huang
  • Patent number: 5359910
    Abstract: A bicycle front fork shock absorbing mechanism includes a lower cylindrical casing having a lower rubber ring above an inside screw hole thereof and a friction lining around the inside wall thereof, and upper cylindrical casing inserted into the lower cylindrical casing to hold a stack of upper rubber rings by a locating block, a friction ring mounted around the lower cylindrical casing in contact with the friction lining through a slide contact, a shock absorbing conical spring retained between the upper rubber rings and the lower rubber ring, and a screw rod having a head stopped above the locating block and a screw rod inserted in proper order through a hole on the locating block, the upper rubber rings, the shock absorbing conical springs, and the lower rubber ring and then threaded into the screw hole on the lower cylindrical casing.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: November 1, 1994
    Assignee: Bettis Corporation
    Inventors: Wu-Sung Chang, Huan-Yang Huang