Abstract: A tubular cushioning device for a bicycle includes a tubular and longitudinal member having a hollow bore and two or more grooves for allowing the tubular and longitudinal member to be temporarily bent or deformed and for allowing the tubular and longitudinal member to cushion and absorb a force that may be transmitted to the tubular and longitudinal member and to the bicycle riders and for allowing the bicycle riders to comfortably ride the bicycle. The grooves may be formed in the upper side, the lateral sides or the bottom side, and the tubular and longitudinal member includes a post binding cylinder for engaging with a handle post, and a bar binding collar for engaging with a handlebar.

Abstract: A bicycle shoe includes a shoe sole, a coupler member attached to bottom of the shoe sole, and a protective device attached to the coupling member, for contacting with ground, and for preventing the coupler member from being directly contacted with the ground, and for preventing the coupler member from being worn out. The protective device includes a lock notch formed in each of the front and the rear portions, and the coupler member includes a front portion and a rear portion for engaging into the lock notches of the protective device, for attaching the protective device to the coupler member. The protective device includes a retaining member for selectively attaching the shorter coupling members.

Abstract: This invention relates to a pedal structure without front clamping members set thereon, in particular, a pedal structure enabling a rider's foot/leg joints to horizontally swivel as appropriate or move up and downs at certain narrow angels, so that a rider to flexibly move leg/foot joints, reduce tiredness on legs and enjoy more comfortable feeling during his/her bicycle riding.

Abstract: A multi-functional retaining strap has two strap surfaces. Each strap surface is installed with attachable tapes. The multi-functional retaining strap comprises a short extending retaining strap having one end fixed to a middle section of the strap surface of the multi-functional retaining strap and another end which is not fixed; a surface of the short extending retaining strap being an attachable tape; an inner folded strap attached to one of the strap surfaces; at least one surface of the inner folded strap being an attachable tape; and an outer folded strap having two ends the inner folded strap; a gap being formed between the inner folded strap and the outer folded strap; at least one surface of the outer folded strap is an attachable tape; an auxiliary strap for prolonging the length of the short extending retaining strap.

Abstract: An apparatus of asynchronous electric discharge machine for wire cut adopted for use in machine industries employs a first electric discharge machine unit and a second electric discharge machine unit to provide electric energy to a cutting wire to generate alternate ignition and discharge on a work piece. The asynchronous operation uses two different discharge circuits in two different time sequences to reduce the probability of occurring discharge at the same spot and effectively reduce pause time, and prevent the cutting wire from rupturing, thereby to reduce production cost and improve operation efficiency.

Abstract: An apparatus of asynchronous electric discharge machine for wire cut adopted for use in machine industries employs a first electric discharge machine unit and a second electric discharge machine unit to provide electric energy to a cutting wire to generate alternate ignition and discharge on a work piece. The asynchronous operation uses two different discharge circuits in two different time sequences to reduce the probability of occurring discharge at the same spot and effectively reduce pause time, and prevent the cutting wire from rupturing, thereby to reduce production cost and improve operation efficiency.