Abstract: A resistive memory device includes a stacked structure and a copper via conductor structure. The stacked structure includes a first electrode, a second electrode, and a variable resistance layer. The second electrode is disposed above the first electrode in a vertical direction, and the variable resistance layer is disposed between the first electrode and the second electrode in the vertical direction. The copper via conductor structure is disposed under the stacked structure. The first electrode includes a tantalum nitride layer directly connected with the copper via conductor structure.

Abstract: The present invention is to provide a massager moves on a pair of undulated tracks. The massager comprises a massaging core 1, and a base 2, which includes a tow unit 3, a shank 4, a pair of tracks 51 and a pair of undulated tracks 52. The tow unit 3 is slided along the tracks 51, the tow unit is connected to the massaging core 1 by a pivotal axle. And the massaging core 1 is further guided to move along the undulated tracks 52. Tow unit 3 meshed with the shank 4 can be driven by a driving unit and a transmission unit, thereby, the tow unit 3 can be glided along the shank 4 and the track 51. The massaging core 1 connected to a tow unit 3 can slide along a pair of undulated tracks similar to waist, back, and neck portions of human body.

Abstract: The present invention is to provide a massager moves on a pair of undulated tracks. The massager comprises a massaging core 1, and a base 2, which includes a tow unit 3, a shank 4, a pair of tracks 51 and a pair of undulated tracks 52. The tow unit 3 is slided along the tracks 51, the tow unit is connected to the massaging core 1 by a pivotal axle. And the massaging core 1 is further guided to move along the undulated tracks 52. Tow unit 3 meshed with the shank 4 can be driven by a driving unit and a transmission unit, thereby, the tow unit 3 can be glided along the shank 4 and the track 51. The massaging core 1 connected to a tow unit 3 can slide along a pair of undulated tracks similar to waist, back, and neck portions of human body.

Abstract: Shift gears of a variable speed motor is no longer needed for a set of gears, but multiple layers disks with magnets fit over an axle rotated by a multiple layers annular opening of a housing, where winding coils wound along inside each annulus seperately. When electrifying each winding coils on each annulus, each corresponding disk can rotate the axle at a fixed ratio to output an extreme high speed or a high torque at low or moderate speed. Such disks and annuli are arranged according to their decrement diameters from the opening to a top of the housing; thereby, each disk is corresponding to each annulus with winding coils in one-to-one relationship. However, magnets disposed to a perimeter of each disk, which is made from magnetic insulation material, such as aluminum alloys, to avoid from interference among each disk.