Abstract: A ball movement path measuring method includes the steps of: preparing an operating unit and a measurement unit, mounting the triaxial accelerometer in the object to be measured for enabling the triaxial accelerometer to define XYZ triaxial space coordinates, obtaining the data of a initial position of the XYZ axes at a first measuring time and the data of a reference position of the XYZ axes at a second measuring time and transmitting the obtained data to the operating unit, and comparing the reference position to the initial position and calculating the XYZ acceleration data, XYZ vector components of force and torsion force relative to each of XYZ axes after receipt of force subject to the contained angle between the coordinates data of the reference position and the coordinate data of the initial position and then using the XYZ acceleration data and the data of the weight and size of the object to calculate the force experienced by the object, initial velocity, flight duration, flight height, flight distan

Abstract: A ball game training apparatus includes a positioning device, a first pivot device connected to the positioning device and turnable relative to the positioning device in X-axis direction, a second pivot device connected to the first pivot device and turnable relative to the first pivot device in Y-axis direction, and a driven device connected to the second pivot device and turnable relative to the second pivot device and having a force-receiving ball disposed remote from the second pivot device and strikable to move by an external force.

Abstract: A ball movement path measuring method includes the steps of: preparing an operating unit and a measurement unit, mounting the triaxial accelerometer in the object to be measured for enabling the triaxial accelerometer to define XYZ triaxial space coordinates, obtaining the data of a initial position of the XYZ axes at a first measuring time and the data of a reference position of the XYZ axes at a second measuring time and transmitting the obtained data to the operating unit, and comparing the reference position to the initial position and calculating the XYZ acceleration data, XYZ vector components of force and torsion force relative to each of XYZ axes after receipt of force subject to the contained angle between the coordinates data of the reference position and the coordinate data of the initial position and then using the XYZ acceleration data and the data of the weight and size of the object to calculate the force experienced by the object, initial velocity, flight duration, flight height, flight distan

Abstract: A ball game training apparatus includes a positioning device, a first pivot device connected to the positioning device and turnable relative to the positioning device in X-axis direction, a second pivot device connected to the first pivot device and turnable relative to the first pivot device in Y-axis direction, and a driven device connected to the second pivot device and turnable relative to the second pivot device and having a force-receiving ball disposed remote from the second pivot device and strikable to move by an external force.

Abstract: A cushion device for an exercise machine, such as treadmill, includes a linkage, a spring and a mount. The linkage is pivoted on a bottom of the exercise machine, and wheel is pivoted on a distal end of the linkage. The mount is fixed to the bottom of the exercise machine, on which the spring is provided to urge the linkage. When user takes exercise on the machine, the vibration from different orientations will transmit to the linkage and make it swing, such that the spring is compressed to absorb the vibration.

Abstract: A dartboard has board member, and the board member has a plurality of target blocks to be stuck by darts. The back side of the board member has an induction layer and a magnetic member. The magnetic member provides a fixed magnetic field, and the induction layer has a substrate and a circuit on the substrate. A dart with a steel iron or iron alloy point sticks into the board member, and disturbs the distribution of the magnetic field provided by the magnetic member, causing electromagnetic induction and inducing a current in the circuit of the induction layer to provide an automatic score.

Abstract: An apparatus for making wedged plate has an extruder to provide melted plastic material. A die head has a channel with an inlet and an outlet. The inlet of the die head is connected to an outlet of the extruder. The outlet of the die head has a thick side and a narrow side. A rolling device has two rollers and a space between the rollers. The space has a thick portion and a narrow portion at opposite sides. The space of the rolling device is aligned with the outlet of the die head, so that the plastic material flows into the space of the rolling device via the die head and is rolled by the rollers. A cutting device is arranged behind the rolling device to cut the rolled plastic material to get wedged plates.

Abstract: A treadmill has a frame, a table assembly and an elevating apparatus to elevate the table assembly. The treadmill has a driving device provided at a bottom side of the table assembly. A transverse shaft is connected to the driving device. Two first linkages each has three pivot portions, wherein two of the pivot portions at ends thereof are pivoted on the table assembly and ends of the transverse shaft respectively. Two second linkages have opposite ends pivoted on the frame and the table assembly respectively, each of which has a pivot portion between the ends thereof to be pivoted on the first linkages at the third pivot portions respectively.

Abstract: An apparatus for making substrates is consisted of a substrate providing unit, a cooler, a skin layer, a rolling unit and a cutting unit in sequence. The substrate providing unit provides a molten substrate material with a predetermined width. The cooler, which is a conveying unit, solidifies the substrate material and conveys it to the rolling unit. The skin layer providing unit provides a molten skin layer onto the substrate material. The rolling unit rolls the molten skin layer and the solidified substrate material and forms a predetermined surface profile on the skin layer at the same time. The cutting unit cuts the substrate material and the skin layer to have a plurality of the substrates.