Abstract: A bike exerciser includes a resistance device connected to the frame of the exerciser and the resistance device has a base board fixedly connected to the frame and a movable board movably restrained on the base board. A plurality of magnets are connected to movable board. A lever is connected to the frame and a connection member is connected between the movable board and the lever. The connection member movably extends through a tube and a first end member is connected to an end of the tube, and a second end member is connected to the movable board. A spring is mounted to the connection member and biased between the first end member and the second end member. The movable board is moved to let the magnets move toward the wheel of the exerciser by pivoting the lever.

Abstract: A combination of an outer casing and a hydraulic cylinder includes a tubular and transparent tube which has two open ends and the hydraulic cylinder is received in the outer casing. A fitting and a piston rod on two ends of the hydraulic cylinder respectively extend from the two open ends of the outer casing.

Abstract: A novel method of using lasers for generating driving energy for activating P-type compound semiconductor films and reducing the resistivity thereof. The P-type compound semiconductor films are made from III-V nitrides or II-VI group compounds doped with P-type impurity. The present invention can be carried out in the ambience of atmosphere rather than in the ambience of nitrogen gas. In addition, adjusting the power and focusing distance of a laser source, and the power density can change the time required by the activating process.

Abstract: The present invention relates to a flame retarded epoxy resin composition, which is characterized by that said flame retarded epoxy resin composition comprising:

Abstract: A novel method of using rapid variation of temperature for generating driving energy to activating P-type compound semiconductor films and reducing the resistivity thereof. The P-type compound semiconductor films are made from III-V nitrides or II-VI group compounds doped with P-type impurity. In addition, the time duration when the ambient temperature is greater than a certain temperature during the annealing process is limited to be less than one minute. Therefore, the optoelectronic performance of the P-type compound semiconductor films will not degrade because the duration of annealing process is decreased.

Abstract: A stepping exerciser includes a rotatable member received in a tubular member which is located on a base. Two slots are defined diametrically through the tubular member and two extensions extending from the rotatable member extend through the slots. Two pedals each are pivotally connected to respective one of two arms extending from the tubular member and two pushing rods extend from the two pedals. Each pushing rod has a block which contacts the extension of the rotatable member. Each pedal has a cylinder connected thereto and the other end of the cylinder is connected to the base. The blocks each have a plurality of convex portions so as to adjust a distance between the pushing rod and the extension and to adjust the stroke of the cylinders.

Abstract: A stepping exerciser includes a base having an upright tubular member disposed thereon. The tubular member has lower left and right portions formed with a respective circumferentially extending slot, and upper left and right portions having a respective pivot arm extending radially therefrom. A rotary member is disposed inside the tubular member and is rotatable relative to the tubular member about an axis of the tubular member. The rotary member has a pair of force transmitting rods that extend outwardly and respectively of the tubular member through the slots. Each of a pair of pivot couplers is sleeved rotatably on a respective pivot arm, and has a movement driving rod that extends downwardly therefrom and that abuts against a respective force transmitting rod. Each of left and right pedal arms has a front end connected to a respective one of the pivot couplers. Each of a pair of resistance cylinders interconnects the base and the rear end of a respective pedal arm.

Abstract: An exerciser with combined stepping and twisting functions is provided. The exerciser includes a base, a tubular sleeve and a stepper. The base has an upright cylindrical body fixed thereto. The cylindrical body is provided with a pair of radially extending and diametrically opposite branches. The tubular sleeve is sleeved rotatably on the cylindrical body and is formed with a circumferentially extending opening to permit passage of the branches on the cylindrical body therethrough. The stepper includes a pair of spaced pedal arms, each of which has a front end pivoted to said tubular sleeve, and a rear end. Each of a pair of resistance cylinders interconnects the rear end of one of the pedal arms and the tubular sleeve. A pair of transmitting members are provided respectively on the front ends of the pedal arms. Each of the transmitting members engages a respective one of the branches on the cylindrical body.

Abstract: An rowing-type exercise device includes a link unit having front and rear link members. The first end portions of the link members are connected pivotally and respectively to front and rear end portions of a base frame unit. An elongated frame body is disposed above the base frame unit and has opposed front and rear end portions to which the second end portions of the link members are connected pivotally and respectively to permit forward and rearward movement of the frame body relative to the base frame unit. A first connecting member has a first end portion connected pivotally to an intermediate portion of the rear link member between the first and second end portions of the rear link member and a second end portion. A second connecting member has a first end portion connected pivotally to the second end portion of the first connecting member and a second end portion connected to an intermediate portion of the frame body of the seat frame unit.

Abstract: A height-adjusting device for an exercise apparatus has a wedge unit mounted adjustably between a load-carrying member and two lifting levers to lift the load-carrying member. The wedge unit includes a U-shaped inner body sleeved on the load-carrying member and having two opposed first vertical plates and a first bottom plate interconnecting bottom ends of the first vertical plates. Each first vertical plate has first and second end portions. A U-shaped outer body has two opposed second vertical plates disposed outwardly of the first vertical plates, and a second bottom plate interconnecting bottom ends of the second vertical plates. Each second vertical plate has one end portion provided with a roller, another end portion pivoted to a lower section of the second end portion, and a top bearing end. A stop bolt bridges top ends of the second end portions.

Abstract: An exerciser including a generally horizontal top frame having a front end, a column supporting the top frame, a movable frame mounted on the top frame and movable between the front end of the top frame and the column, the movable frame having two spaced vertical hollow frame sections and a cross frame section interconnecting lowermost ends of the vertical hollow frame sections, two push arms connected privotally to the movable frame and capable of being pivoted toward each other, and a stop rod extending frontward from the column below the top frame so as to limit movement of the movable frame toward the column. The exerciser further includes a first locking unit which is operable to prevent movement of the movable frame relative to the top frame and a second locking unit which is operable to prevent movement of the push arms relative to the movable frame.